diff --git a/.github/policies/auto-merge.yml b/.github/policies/auto-merge.yml
index 73fd0c48e6e..ac804633aed 100644
--- a/.github/policies/auto-merge.yml
+++ b/.github/policies/auto-merge.yml
@@ -1,38 +1,50 @@
+id:
 name: GitOps.PullRequestIssueManagement
 description: GitOps.PullRequestIssueManagement primitive
+owner:
 resource: repository
-
+disabled: false
+where:
 configuration:
   resourceManagementConfiguration:
     eventResponderTasks:
-    - description: Auto-squash-merge PRs to main labeled with auto-merge
+    - description: Approve and auto-squash-merge dependabot PRs to main labeled 'auto-merge'
       triggerOnOwnActions: true
       if:
-      - payloadType: Pull_Request
-      - labelAdded:
-          label: ':octocat: auto-merge'
-      - targetsBranch:
-          branch: main
+        - payloadType: Pull_Request
+        - labelAdded:
+            label: ':octocat: auto-merge'
+        - targetsBranch:
+            branch: main
+        - or:
+            - isActivitySender:
+                user: dependabot
+            - isActivitySender:
+                user: dependabot[bot]
       then:
-      - enableAutoMerge:
-          mergeMethod: Squash
+        - enableAutoMerge:
+            mergeMethod: Squash
+        - approvePullRequest:
+            comment: "Approved; this PR will merge when all status checks pass."
 
-    - description: Auto-merge PRs to live labeled with auto-merge
+    - description: Auto-merge policy service bot PRs to live labeled 'auto-merge'
       triggerOnOwnActions: true
       if:
-      - payloadType: Pull_Request
-      - labelAdded:
-          label: ':octocat: auto-merge'
-      - targetsBranch:
-          branch: live
+        - payloadType: Pull_Request
+        - labelAdded:
+            label: ':octocat: auto-merge'
+        - targetsBranch:
+            branch: live
+        - isActivitySender:
+            user: dotnet-policy-service[bot]
       then:
-      - enableAutoMerge:
-          mergeMethod: Merge
+        - enableAutoMerge:
+            mergeMethod: Merge
 
-    - description: Don't auto-merge PRs with auto-merge label removed
+    - description: Don't auto-merge PRs with 'auto-merge' label removed
       if:
-      - payloadType: Pull_Request
-      - labelRemoved:
-          label: ':octocat: auto-merge'
+        - payloadType: Pull_Request
+        - labelRemoved:
+            label: ':octocat: auto-merge'
       then:
-      - disableAutoMerge
+        - disableAutoMerge
diff --git a/xml/Microsoft.CSharp.RuntimeBinder/Binder.xml b/xml/Microsoft.CSharp.RuntimeBinder/Binder.xml
index 2751fea083a..a48f432ffc0 100644
--- a/xml/Microsoft.CSharp.RuntimeBinder/Binder.xml
+++ b/xml/Microsoft.CSharp.RuntimeBinder/Binder.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains factory methods to create dynamic call site binders for CSharp.</summary>
diff --git a/xml/Microsoft.CSharp.RuntimeBinder/CSharpArgumentInfo.xml b/xml/Microsoft.CSharp.RuntimeBinder/CSharpArgumentInfo.xml
index 2c8ba341788..a1d69ae9ca2 100644
--- a/xml/Microsoft.CSharp.RuntimeBinder/CSharpArgumentInfo.xml
+++ b/xml/Microsoft.CSharp.RuntimeBinder/CSharpArgumentInfo.xml
@@ -49,12 +49,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.CSharp.RuntimeBinder.CSharpArgumentInfo</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.CSharp.RuntimeBinder/RuntimeBinderException.xml b/xml/Microsoft.CSharp.RuntimeBinder/RuntimeBinderException.xml
index f9cf590ca7c..a378cde1e4a 100644
--- a/xml/Microsoft.CSharp.RuntimeBinder/RuntimeBinderException.xml
+++ b/xml/Microsoft.CSharp.RuntimeBinder/RuntimeBinderException.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -171,10 +167,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/Microsoft.CSharp.RuntimeBinder/RuntimeBinderInternalCompilerException.xml b/xml/Microsoft.CSharp.RuntimeBinder/RuntimeBinderInternalCompilerException.xml
index 358ae00e71e..83254770912 100644
--- a/xml/Microsoft.CSharp.RuntimeBinder/RuntimeBinderInternalCompilerException.xml
+++ b/xml/Microsoft.CSharp.RuntimeBinder/RuntimeBinderInternalCompilerException.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -171,10 +167,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/Microsoft.DotNet.PlatformAbstractions/HashCodeCombiner.xml b/xml/Microsoft.DotNet.PlatformAbstractions/HashCodeCombiner.xml
index fc8cf23c748..6a1fabc475e 100644
--- a/xml/Microsoft.DotNet.PlatformAbstractions/HashCodeCombiner.xml
+++ b/xml/Microsoft.DotNet.PlatformAbstractions/HashCodeCombiner.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/Microsoft.Extensions.AmbientMetadata/ApplicationMetadata.xml b/xml/Microsoft.Extensions.AmbientMetadata/ApplicationMetadata.xml
index 1c52056facb..cce9a4112af 100644
--- a/xml/Microsoft.Extensions.AmbientMetadata/ApplicationMetadata.xml
+++ b/xml/Microsoft.Extensions.AmbientMetadata/ApplicationMetadata.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -104,14 +100,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -142,14 +130,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.AsyncState/AsyncStateToken.xml b/xml/Microsoft.Extensions.AsyncState/AsyncStateToken.xml
index b635f2c8349..b157df31ecc 100644
--- a/xml/Microsoft.Extensions.AsyncState/AsyncStateToken.xml
+++ b/xml/Microsoft.Extensions.AsyncState/AsyncStateToken.xml
@@ -83,12 +83,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.AsyncState/IAsyncContext`1.xml b/xml/Microsoft.Extensions.AsyncState/IAsyncContext`1.xml
index f75c127fabc..505eaefb8a3 100644
--- a/xml/Microsoft.Extensions.AsyncState/IAsyncContext`1.xml
+++ b/xml/Microsoft.Extensions.AsyncState/IAsyncContext`1.xml
@@ -28,12 +28,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="T">The type of the asynchronous state.</typeparam>
     <summary>
diff --git a/xml/Microsoft.Extensions.AsyncState/IAsyncLocalContext`1.xml b/xml/Microsoft.Extensions.AsyncState/IAsyncLocalContext`1.xml
index 63d9c578105..3de868dfd43 100644
--- a/xml/Microsoft.Extensions.AsyncState/IAsyncLocalContext`1.xml
+++ b/xml/Microsoft.Extensions.AsyncState/IAsyncLocalContext`1.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of the asynchronous state.</typeparam>
diff --git a/xml/Microsoft.Extensions.AsyncState/IAsyncState.xml b/xml/Microsoft.Extensions.AsyncState/IAsyncState.xml
index a108d1639df..7564822c338 100644
--- a/xml/Microsoft.Extensions.AsyncState/IAsyncState.xml
+++ b/xml/Microsoft.Extensions.AsyncState/IAsyncState.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Encapsulates all information within the asynchronous flow in an <see cref="T:System.Threading.AsyncLocal`1" /> variable.
diff --git a/xml/Microsoft.Extensions.Caching.Distributed/DistributedCacheEntryExtensions.xml b/xml/Microsoft.Extensions.Caching.Distributed/DistributedCacheEntryExtensions.xml
index 03d8412b5d8..7ad4dbf2cd6 100644
--- a/xml/Microsoft.Extensions.Caching.Distributed/DistributedCacheEntryExtensions.xml
+++ b/xml/Microsoft.Extensions.Caching.Distributed/DistributedCacheEntryExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Caching.Distributed/DistributedCacheExtensions.xml b/xml/Microsoft.Extensions.Caching.Distributed/DistributedCacheExtensions.xml
index 415681c110c..d7c4ba011f0 100644
--- a/xml/Microsoft.Extensions.Caching.Distributed/DistributedCacheExtensions.xml
+++ b/xml/Microsoft.Extensions.Caching.Distributed/DistributedCacheExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Caching.Distributed/IBufferDistributedCache.xml b/xml/Microsoft.Extensions.Caching.Distributed/IBufferDistributedCache.xml
index e1f5840d06b..5d782662e86 100644
--- a/xml/Microsoft.Extensions.Caching.Distributed/IBufferDistributedCache.xml
+++ b/xml/Microsoft.Extensions.Caching.Distributed/IBufferDistributedCache.xml
@@ -18,12 +18,6 @@
       <InterfaceName>Microsoft.Extensions.Caching.Distributed.IDistributedCache</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a distributed cache of serialized values, with support for low allocation data transfer.
diff --git a/xml/Microsoft.Extensions.Caching.Distributed/IDistributedCache.xml b/xml/Microsoft.Extensions.Caching.Distributed/IDistributedCache.xml
index a4badab8f86..7a3645b2509 100644
--- a/xml/Microsoft.Extensions.Caching.Distributed/IDistributedCache.xml
+++ b/xml/Microsoft.Extensions.Caching.Distributed/IDistributedCache.xml
@@ -21,12 +21,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a distributed cache of serialized values.
diff --git a/xml/Microsoft.Extensions.Caching.Distributed/MemoryDistributedCache.xml b/xml/Microsoft.Extensions.Caching.Distributed/MemoryDistributedCache.xml
index 3019166a7b1..8ae33bf6da1 100644
--- a/xml/Microsoft.Extensions.Caching.Distributed/MemoryDistributedCache.xml
+++ b/xml/Microsoft.Extensions.Caching.Distributed/MemoryDistributedCache.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Caching.Hybrid/HybridCache.xml b/xml/Microsoft.Extensions.Caching.Hybrid/HybridCache.xml
index 28274825521..87054b28dbc 100644
--- a/xml/Microsoft.Extensions.Caching.Hybrid/HybridCache.xml
+++ b/xml/Microsoft.Extensions.Caching.Hybrid/HybridCache.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -66,12 +62,6 @@
         <AssemblyName>Microsoft.Extensions.Caching.Abstractions</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;T&gt;</ReturnType>
         <Attributes>
@@ -137,12 +127,6 @@
         <AssemblyName>Microsoft.Extensions.Caching.Abstractions</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;T&gt;</ReturnType>
         <Attributes>
@@ -196,8 +180,8 @@
         <typeparam name="TState">The type of additional state required by <paramref name="factory" />.</typeparam>
         <typeparam name="T">The type of the data being considered.</typeparam>
         <param name="key">The key of the entry to look for or create.</param>
-        <param name="factory">Provides the underlying data service if the data is not available in the cache.</param>
         <param name="state">The state required for <paramref name="factory" />.</param>
+        <param name="factory">Provides the underlying data service if the data is not available in the cache.</param>
         <param name="options">Additional options for this cache entry.</param>
         <param name="tags">The tags to associate with this cache item.</param>
         <param name="cancellationToken">The <see cref="T:System.Threading.CancellationToken" /> used to propagate notifications that the operation should be canceled.</param>
diff --git a/xml/Microsoft.Extensions.Caching.Hybrid/HybridCacheOptions.xml b/xml/Microsoft.Extensions.Caching.Hybrid/HybridCacheOptions.xml
index 98ac1f8a60c..2fce523485b 100644
--- a/xml/Microsoft.Extensions.Caching.Hybrid/HybridCacheOptions.xml
+++ b/xml/Microsoft.Extensions.Caching.Hybrid/HybridCacheOptions.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Caching.Hybrid/IHybridCacheBuilder.xml b/xml/Microsoft.Extensions.Caching.Hybrid/IHybridCacheBuilder.xml
index 3c107c528c8..bd674c4c876 100644
--- a/xml/Microsoft.Extensions.Caching.Hybrid/IHybridCacheBuilder.xml
+++ b/xml/Microsoft.Extensions.Caching.Hybrid/IHybridCacheBuilder.xml
@@ -10,12 +10,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Helper API for configuring <see cref="T:Microsoft.Extensions.Caching.Hybrid.HybridCache" />.
diff --git a/xml/Microsoft.Extensions.Caching.Hybrid/IHybridCacheSerializerFactory.xml b/xml/Microsoft.Extensions.Caching.Hybrid/IHybridCacheSerializerFactory.xml
index bc841060345..49d7324270c 100644
--- a/xml/Microsoft.Extensions.Caching.Hybrid/IHybridCacheSerializerFactory.xml
+++ b/xml/Microsoft.Extensions.Caching.Hybrid/IHybridCacheSerializerFactory.xml
@@ -14,12 +14,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Factory provider for per-type <see cref="T:Microsoft.Extensions.Caching.Hybrid.IHybridCacheSerializer`1" /> instances.
diff --git a/xml/Microsoft.Extensions.Caching.Hybrid/IHybridCacheSerializer`1.xml b/xml/Microsoft.Extensions.Caching.Hybrid/IHybridCacheSerializer`1.xml
index cbe9ceec043..4036a8d28c6 100644
--- a/xml/Microsoft.Extensions.Caching.Hybrid/IHybridCacheSerializer`1.xml
+++ b/xml/Microsoft.Extensions.Caching.Hybrid/IHybridCacheSerializer`1.xml
@@ -85,12 +85,6 @@
         <AssemblyName>Microsoft.Extensions.Caching.Abstractions</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Caching.Memory/CacheEntryExtensions.xml b/xml/Microsoft.Extensions.Caching.Memory/CacheEntryExtensions.xml
index ef0137c1426..fcb0917e256 100644
--- a/xml/Microsoft.Extensions.Caching.Memory/CacheEntryExtensions.xml
+++ b/xml/Microsoft.Extensions.Caching.Memory/CacheEntryExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Caching.Memory/CacheExtensions.xml b/xml/Microsoft.Extensions.Caching.Memory/CacheExtensions.xml
index 261848bbac2..3a8d6c2c2d5 100644
--- a/xml/Microsoft.Extensions.Caching.Memory/CacheExtensions.xml
+++ b/xml/Microsoft.Extensions.Caching.Memory/CacheExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Caching.Memory/ICacheEntry.xml b/xml/Microsoft.Extensions.Caching.Memory/ICacheEntry.xml
index 4a85efde25f..9b18c4fe386 100644
--- a/xml/Microsoft.Extensions.Caching.Memory/ICacheEntry.xml
+++ b/xml/Microsoft.Extensions.Caching.Memory/ICacheEntry.xml
@@ -25,12 +25,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents an entry in the <see cref="T:Microsoft.Extensions.Caching.Memory.IMemoryCache" /> implementation.
@@ -251,14 +245,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/Microsoft.Extensions.Caching.Memory/IMemoryCache.xml b/xml/Microsoft.Extensions.Caching.Memory/IMemoryCache.xml
index 51698c6a287..d71641ebb86 100644
--- a/xml/Microsoft.Extensions.Caching.Memory/IMemoryCache.xml
+++ b/xml/Microsoft.Extensions.Caching.Memory/IMemoryCache.xml
@@ -25,12 +25,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a local in-memory cache whose values are not serialized.
@@ -79,12 +73,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Caching.Memory.MemoryCacheStatistics</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Caching.Memory/MemoryCache.xml b/xml/Microsoft.Extensions.Caching.Memory/MemoryCache.xml
index 260cbb70ba4..754967a80b9 100644
--- a/xml/Microsoft.Extensions.Caching.Memory/MemoryCache.xml
+++ b/xml/Microsoft.Extensions.Caching.Memory/MemoryCache.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -299,12 +295,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Caching.Memory.MemoryCacheStatistics</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Caching.Memory/MemoryCacheEntryExtensions.xml b/xml/Microsoft.Extensions.Caching.Memory/MemoryCacheEntryExtensions.xml
index 48a5f832e65..07548696d83 100644
--- a/xml/Microsoft.Extensions.Caching.Memory/MemoryCacheEntryExtensions.xml
+++ b/xml/Microsoft.Extensions.Caching.Memory/MemoryCacheEntryExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Caching.Memory/MemoryCacheEntryOptions.xml b/xml/Microsoft.Extensions.Caching.Memory/MemoryCacheEntryOptions.xml
index 16962b3a161..8a0f7b09231 100644
--- a/xml/Microsoft.Extensions.Caching.Memory/MemoryCacheEntryOptions.xml
+++ b/xml/Microsoft.Extensions.Caching.Memory/MemoryCacheEntryOptions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Caching.Memory/MemoryCacheOptions.xml b/xml/Microsoft.Extensions.Caching.Memory/MemoryCacheOptions.xml
index 04bdd0babe1..936279924e7 100644
--- a/xml/Microsoft.Extensions.Caching.Memory/MemoryCacheOptions.xml
+++ b/xml/Microsoft.Extensions.Caching.Memory/MemoryCacheOptions.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Caching.Memory/PostEvictionCallbackRegistration.xml b/xml/Microsoft.Extensions.Caching.Memory/PostEvictionCallbackRegistration.xml
index 865abb44107..85cfd5306d3 100644
--- a/xml/Microsoft.Extensions.Caching.Memory/PostEvictionCallbackRegistration.xml
+++ b/xml/Microsoft.Extensions.Caching.Memory/PostEvictionCallbackRegistration.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Caching.SqlServer/SqlServerCache.xml b/xml/Microsoft.Extensions.Caching.SqlServer/SqlServerCache.xml
index 65d5b4fa5cc..8290577e88b 100644
--- a/xml/Microsoft.Extensions.Caching.SqlServer/SqlServerCache.xml
+++ b/xml/Microsoft.Extensions.Caching.SqlServer/SqlServerCache.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Distributed cache implementation using Microsoft SQL Server database.</summary>
diff --git a/xml/Microsoft.Extensions.Caching.SqlServer/SqlServerCacheOptions.xml b/xml/Microsoft.Extensions.Caching.SqlServer/SqlServerCacheOptions.xml
index d777c2d325f..c85dd5c33b3 100644
--- a/xml/Microsoft.Extensions.Caching.SqlServer/SqlServerCacheOptions.xml
+++ b/xml/Microsoft.Extensions.Caching.SqlServer/SqlServerCacheOptions.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Configuration options for <see cref="T:Microsoft.Extensions.Caching.SqlServer.SqlServerCache" />.</summary>
@@ -201,14 +197,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Internal.ISystemClock</ReturnType>
diff --git a/xml/Microsoft.Extensions.Caching.StackExchangeRedis/RedisCache.xml b/xml/Microsoft.Extensions.Caching.StackExchangeRedis/RedisCache.xml
index 78e2986ed13..062e13cb78d 100644
--- a/xml/Microsoft.Extensions.Caching.StackExchangeRedis/RedisCache.xml
+++ b/xml/Microsoft.Extensions.Caching.StackExchangeRedis/RedisCache.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/Microsoft.Extensions.Caching.StackExchangeRedis/RedisCacheOptions.xml b/xml/Microsoft.Extensions.Caching.StackExchangeRedis/RedisCacheOptions.xml
index 73a38bad5af..2c34bbee237 100644
--- a/xml/Microsoft.Extensions.Caching.StackExchangeRedis/RedisCacheOptions.xml
+++ b/xml/Microsoft.Extensions.Caching.StackExchangeRedis/RedisCacheOptions.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Configuration options for <see cref="T:Microsoft.Extensions.Caching.StackExchangeRedis.RedisCache" />.</summary>
diff --git a/xml/Microsoft.Extensions.Compliance.Classification/DataClassification.xml b/xml/Microsoft.Extensions.Compliance.Classification/DataClassification.xml
index 2264f2ee57a..3d38193cb8a 100644
--- a/xml/Microsoft.Extensions.Compliance.Classification/DataClassification.xml
+++ b/xml/Microsoft.Extensions.Compliance.Classification/DataClassification.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -117,12 +113,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Compliance.Classification/DataClassificationAttribute.xml b/xml/Microsoft.Extensions.Compliance.Classification/DataClassificationAttribute.xml
index f0581572780..04bb9e21b4a 100644
--- a/xml/Microsoft.Extensions.Compliance.Classification/DataClassificationAttribute.xml
+++ b/xml/Microsoft.Extensions.Compliance.Classification/DataClassificationAttribute.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Compliance.Classification/DataClassificationSet.xml b/xml/Microsoft.Extensions.Compliance.Classification/DataClassificationSet.xml
index a347ee5f2b4..ccb2edbaadc 100644
--- a/xml/Microsoft.Extensions.Compliance.Classification/DataClassificationSet.xml
+++ b/xml/Microsoft.Extensions.Compliance.Classification/DataClassificationSet.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -137,12 +133,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -172,12 +162,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Compliance.Redaction/ErasingRedactor.xml b/xml/Microsoft.Extensions.Compliance.Redaction/ErasingRedactor.xml
index d2ef9201784..f5d49d03380 100644
--- a/xml/Microsoft.Extensions.Compliance.Redaction/ErasingRedactor.xml
+++ b/xml/Microsoft.Extensions.Compliance.Redaction/ErasingRedactor.xml
@@ -91,10 +91,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Compliance.Redaction.ErasingRedactor</ReturnType>
diff --git a/xml/Microsoft.Extensions.Compliance.Redaction/FakeRedactionBuilderExtensions.xml b/xml/Microsoft.Extensions.Compliance.Redaction/FakeRedactionBuilderExtensions.xml
index d7fbe2fc4b8..0e08958e399 100644
--- a/xml/Microsoft.Extensions.Compliance.Redaction/FakeRedactionBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Compliance.Redaction/FakeRedactionBuilderExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Compliance.Redaction/HmacRedactor.xml b/xml/Microsoft.Extensions.Compliance.Redaction/HmacRedactor.xml
index ffde2edc314..1552c58b121 100644
--- a/xml/Microsoft.Extensions.Compliance.Redaction/HmacRedactor.xml
+++ b/xml/Microsoft.Extensions.Compliance.Redaction/HmacRedactor.xml
@@ -40,12 +40,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="options" Type="Microsoft.Extensions.Options.IOptions&lt;Microsoft.Extensions.Compliance.Redaction.HmacRedactorOptions&gt;" />
       </Parameters>
diff --git a/xml/Microsoft.Extensions.Compliance.Redaction/HmacRedactorOptions.xml b/xml/Microsoft.Extensions.Compliance.Redaction/HmacRedactorOptions.xml
index b11b0a7701b..8d764360ffc 100644
--- a/xml/Microsoft.Extensions.Compliance.Redaction/HmacRedactorOptions.xml
+++ b/xml/Microsoft.Extensions.Compliance.Redaction/HmacRedactorOptions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Compliance.Redaction/IRedactionBuilder.xml b/xml/Microsoft.Extensions.Compliance.Redaction/IRedactionBuilder.xml
index 9540d38417b..5a003fe0820 100644
--- a/xml/Microsoft.Extensions.Compliance.Redaction/IRedactionBuilder.xml
+++ b/xml/Microsoft.Extensions.Compliance.Redaction/IRedactionBuilder.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Adds redactors to the application.
diff --git a/xml/Microsoft.Extensions.Compliance.Redaction/IRedactorProvider.xml b/xml/Microsoft.Extensions.Compliance.Redaction/IRedactorProvider.xml
index 69bf40afbad..3d4de9ee36c 100644
--- a/xml/Microsoft.Extensions.Compliance.Redaction/IRedactorProvider.xml
+++ b/xml/Microsoft.Extensions.Compliance.Redaction/IRedactorProvider.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Provides redactors for different data classifications.
diff --git a/xml/Microsoft.Extensions.Compliance.Redaction/NullRedactor.xml b/xml/Microsoft.Extensions.Compliance.Redaction/NullRedactor.xml
index e95e5dc13ba..fd7dd9768ff 100644
--- a/xml/Microsoft.Extensions.Compliance.Redaction/NullRedactor.xml
+++ b/xml/Microsoft.Extensions.Compliance.Redaction/NullRedactor.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -81,12 +77,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -184,12 +174,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Compliance.Redaction/NullRedactorProvider.xml b/xml/Microsoft.Extensions.Compliance.Redaction/NullRedactorProvider.xml
index eb0ff0c1b95..f184a8f6da9 100644
--- a/xml/Microsoft.Extensions.Compliance.Redaction/NullRedactorProvider.xml
+++ b/xml/Microsoft.Extensions.Compliance.Redaction/NullRedactorProvider.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Compliance.Redaction/RedactionExtensions.xml b/xml/Microsoft.Extensions.Compliance.Redaction/RedactionExtensions.xml
index 508b07f3f49..246dd29a4ed 100644
--- a/xml/Microsoft.Extensions.Compliance.Redaction/RedactionExtensions.xml
+++ b/xml/Microsoft.Extensions.Compliance.Redaction/RedactionExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Compliance.Redaction/Redactor.xml b/xml/Microsoft.Extensions.Compliance.Redaction/Redactor.xml
index f67e44b815c..23491743188 100644
--- a/xml/Microsoft.Extensions.Compliance.Redaction/Redactor.xml
+++ b/xml/Microsoft.Extensions.Compliance.Redaction/Redactor.xml
@@ -87,12 +87,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -149,12 +143,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -271,10 +259,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.SkipLocalsInit]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.SkipLocalsInit&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -328,10 +312,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.SkipLocalsInit]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.SkipLocalsInit&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
diff --git a/xml/Microsoft.Extensions.Compliance.Testing/FakeRedactionCollector.xml b/xml/Microsoft.Extensions.Compliance.Testing/FakeRedactionCollector.xml
index 380d92889f9..ac8d0d5e1fd 100644
--- a/xml/Microsoft.Extensions.Compliance.Testing/FakeRedactionCollector.xml
+++ b/xml/Microsoft.Extensions.Compliance.Testing/FakeRedactionCollector.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Compliance.Testing/FakeRedactor.xml b/xml/Microsoft.Extensions.Compliance.Testing/FakeRedactor.xml
index 75cff740a30..485166a355e 100644
--- a/xml/Microsoft.Extensions.Compliance.Testing/FakeRedactor.xml
+++ b/xml/Microsoft.Extensions.Compliance.Testing/FakeRedactor.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -50,12 +46,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="options" Type="Microsoft.Extensions.Options.IOptions&lt;Microsoft.Extensions.Compliance.Testing.FakeRedactorOptions&gt;">
           <Attributes>
@@ -88,12 +78,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Compliance.Testing.FakeRedactor</ReturnType>
       </ReturnValue>
@@ -148,12 +132,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -181,12 +159,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Compliance.Testing/FakeRedactorOptions.xml b/xml/Microsoft.Extensions.Compliance.Testing/FakeRedactorOptions.xml
index c3da3698fba..044f50dd94a 100644
--- a/xml/Microsoft.Extensions.Compliance.Testing/FakeRedactorOptions.xml
+++ b/xml/Microsoft.Extensions.Compliance.Testing/FakeRedactorOptions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Compliance.Testing/FakeRedactorProvider.xml b/xml/Microsoft.Extensions.Compliance.Testing/FakeRedactorProvider.xml
index 7b8eba7abbc..492da69712d 100644
--- a/xml/Microsoft.Extensions.Compliance.Testing/FakeRedactorProvider.xml
+++ b/xml/Microsoft.Extensions.Compliance.Testing/FakeRedactorProvider.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -54,12 +50,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="options" Type="Microsoft.Extensions.Compliance.Testing.FakeRedactorOptions" />
         <Parameter Name="eventCollector" Type="Microsoft.Extensions.Compliance.Testing.FakeRedactionCollector" />
diff --git a/xml/Microsoft.Extensions.Compliance.Testing/FakeTaxonomy.xml b/xml/Microsoft.Extensions.Compliance.Testing/FakeTaxonomy.xml
index ef70a81cf93..504a359ea97 100644
--- a/xml/Microsoft.Extensions.Compliance.Testing/FakeTaxonomy.xml
+++ b/xml/Microsoft.Extensions.Compliance.Testing/FakeTaxonomy.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Compliance.Testing/RedactedData.xml b/xml/Microsoft.Extensions.Compliance.Testing/RedactedData.xml
index 02a8e9dc597..85f5fcfa187 100644
--- a/xml/Microsoft.Extensions.Compliance.Testing/RedactedData.xml
+++ b/xml/Microsoft.Extensions.Compliance.Testing/RedactedData.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -119,12 +115,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Compliance.Testing/RedactorRequested.xml b/xml/Microsoft.Extensions.Compliance.Testing/RedactorRequested.xml
index cc0b19ad3b9..063e64c3926 100644
--- a/xml/Microsoft.Extensions.Compliance.Testing/RedactorRequested.xml
+++ b/xml/Microsoft.Extensions.Compliance.Testing/RedactorRequested.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -141,12 +137,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Configuration.CommandLine/CommandLineConfigurationProvider.xml b/xml/Microsoft.Extensions.Configuration.CommandLine/CommandLineConfigurationProvider.xml
index 2e3e7a4f486..36e66d32d6d 100644
--- a/xml/Microsoft.Extensions.Configuration.CommandLine/CommandLineConfigurationProvider.xml
+++ b/xml/Microsoft.Extensions.Configuration.CommandLine/CommandLineConfigurationProvider.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration.CommandLine/CommandLineConfigurationSource.xml b/xml/Microsoft.Extensions.Configuration.CommandLine/CommandLineConfigurationSource.xml
index 777b2197713..0d319a5c66c 100644
--- a/xml/Microsoft.Extensions.Configuration.CommandLine/CommandLineConfigurationSource.xml
+++ b/xml/Microsoft.Extensions.Configuration.CommandLine/CommandLineConfigurationSource.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration.EnvironmentVariables/EnvironmentVariablesConfigurationProvider.xml b/xml/Microsoft.Extensions.Configuration.EnvironmentVariables/EnvironmentVariablesConfigurationProvider.xml
index 207de017edb..a5a4d6d7e16 100644
--- a/xml/Microsoft.Extensions.Configuration.EnvironmentVariables/EnvironmentVariablesConfigurationProvider.xml
+++ b/xml/Microsoft.Extensions.Configuration.EnvironmentVariables/EnvironmentVariablesConfigurationProvider.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -82,12 +78,6 @@ For more information and examples, see [Environment variable configuration provi
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="prefix" Type="System.String" />
       </Parameters>
diff --git a/xml/Microsoft.Extensions.Configuration.EnvironmentVariables/EnvironmentVariablesConfigurationSource.xml b/xml/Microsoft.Extensions.Configuration.EnvironmentVariables/EnvironmentVariablesConfigurationSource.xml
index be9a0ff0af0..de888eb300e 100644
--- a/xml/Microsoft.Extensions.Configuration.EnvironmentVariables/EnvironmentVariablesConfigurationSource.xml
+++ b/xml/Microsoft.Extensions.Configuration.EnvironmentVariables/EnvironmentVariablesConfigurationSource.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -79,12 +75,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Configuration.IConfigurationProvider</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Configuration.Ini/IniConfigurationProvider.xml b/xml/Microsoft.Extensions.Configuration.Ini/IniConfigurationProvider.xml
index 6c4b758c3ba..38874418a27 100644
--- a/xml/Microsoft.Extensions.Configuration.Ini/IniConfigurationProvider.xml
+++ b/xml/Microsoft.Extensions.Configuration.Ini/IniConfigurationProvider.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration.Ini/IniConfigurationSource.xml b/xml/Microsoft.Extensions.Configuration.Ini/IniConfigurationSource.xml
index 0b0b1e878c0..eaebe979f55 100644
--- a/xml/Microsoft.Extensions.Configuration.Ini/IniConfigurationSource.xml
+++ b/xml/Microsoft.Extensions.Configuration.Ini/IniConfigurationSource.xml
@@ -82,12 +82,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Configuration.IConfigurationProvider</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Configuration.Ini/IniStreamConfigurationProvider.xml b/xml/Microsoft.Extensions.Configuration.Ini/IniStreamConfigurationProvider.xml
index 089c6e83b4d..f45ccefef40 100644
--- a/xml/Microsoft.Extensions.Configuration.Ini/IniStreamConfigurationProvider.xml
+++ b/xml/Microsoft.Extensions.Configuration.Ini/IniStreamConfigurationProvider.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration.Ini/IniStreamConfigurationSource.xml b/xml/Microsoft.Extensions.Configuration.Ini/IniStreamConfigurationSource.xml
index 556e28520ea..a22f94a45e1 100644
--- a/xml/Microsoft.Extensions.Configuration.Ini/IniStreamConfigurationSource.xml
+++ b/xml/Microsoft.Extensions.Configuration.Ini/IniStreamConfigurationSource.xml
@@ -77,12 +77,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Configuration.IConfigurationProvider</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Configuration.Json/JsonConfigurationProvider.xml b/xml/Microsoft.Extensions.Configuration.Json/JsonConfigurationProvider.xml
index 95e850f62bf..121c455810b 100644
--- a/xml/Microsoft.Extensions.Configuration.Json/JsonConfigurationProvider.xml
+++ b/xml/Microsoft.Extensions.Configuration.Json/JsonConfigurationProvider.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration.Json/JsonConfigurationSource.xml b/xml/Microsoft.Extensions.Configuration.Json/JsonConfigurationSource.xml
index a17c22cccda..568219bb943 100644
--- a/xml/Microsoft.Extensions.Configuration.Json/JsonConfigurationSource.xml
+++ b/xml/Microsoft.Extensions.Configuration.Json/JsonConfigurationSource.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Configuration.IConfigurationProvider</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Configuration.Json/JsonStreamConfigurationProvider.xml b/xml/Microsoft.Extensions.Configuration.Json/JsonStreamConfigurationProvider.xml
index 13fe9ee3901..a999c3c631e 100644
--- a/xml/Microsoft.Extensions.Configuration.Json/JsonStreamConfigurationProvider.xml
+++ b/xml/Microsoft.Extensions.Configuration.Json/JsonStreamConfigurationProvider.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration.Json/JsonStreamConfigurationSource.xml b/xml/Microsoft.Extensions.Configuration.Json/JsonStreamConfigurationSource.xml
index bfb9abaeb77..7d970c0345a 100644
--- a/xml/Microsoft.Extensions.Configuration.Json/JsonStreamConfigurationSource.xml
+++ b/xml/Microsoft.Extensions.Configuration.Json/JsonStreamConfigurationSource.xml
@@ -57,12 +57,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Configuration.IConfigurationProvider</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Configuration.KeyPerFile/KeyPerFileConfigurationProvider.xml b/xml/Microsoft.Extensions.Configuration.KeyPerFile/KeyPerFileConfigurationProvider.xml
index a249ae3b0d1..55676d37b81 100644
--- a/xml/Microsoft.Extensions.Configuration.KeyPerFile/KeyPerFileConfigurationProvider.xml
+++ b/xml/Microsoft.Extensions.Configuration.KeyPerFile/KeyPerFileConfigurationProvider.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration.KeyPerFile/KeyPerFileConfigurationSource.xml b/xml/Microsoft.Extensions.Configuration.KeyPerFile/KeyPerFileConfigurationSource.xml
index 0f65052b6af..2b1e4003dba 100644
--- a/xml/Microsoft.Extensions.Configuration.KeyPerFile/KeyPerFileConfigurationSource.xml
+++ b/xml/Microsoft.Extensions.Configuration.KeyPerFile/KeyPerFileConfigurationSource.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -111,14 +107,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.FileProviders.IFileProvider</ReturnType>
diff --git a/xml/Microsoft.Extensions.Configuration.Memory/MemoryConfigurationProvider.xml b/xml/Microsoft.Extensions.Configuration.Memory/MemoryConfigurationProvider.xml
index edc04168dc5..bfc54d409ae 100644
--- a/xml/Microsoft.Extensions.Configuration.Memory/MemoryConfigurationProvider.xml
+++ b/xml/Microsoft.Extensions.Configuration.Memory/MemoryConfigurationProvider.xml
@@ -59,12 +59,6 @@ For more information and examples, see [Memory configuration provider](/dotnet/c
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="source" Type="Microsoft.Extensions.Configuration.Memory.MemoryConfigurationSource" />
       </Parameters>
@@ -89,12 +83,6 @@ For more information and examples, see [Memory configuration provider](/dotnet/c
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Configuration.Memory/MemoryConfigurationSource.xml b/xml/Microsoft.Extensions.Configuration.Memory/MemoryConfigurationSource.xml
index 433cf8ea28c..61b80340c6b 100644
--- a/xml/Microsoft.Extensions.Configuration.Memory/MemoryConfigurationSource.xml
+++ b/xml/Microsoft.Extensions.Configuration.Memory/MemoryConfigurationSource.xml
@@ -69,12 +69,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Configuration.IConfigurationProvider</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Configuration.UserSecrets/PathHelper.xml b/xml/Microsoft.Extensions.Configuration.UserSecrets/PathHelper.xml
index f6bf6d30182..9d56356c762 100644
--- a/xml/Microsoft.Extensions.Configuration.UserSecrets/PathHelper.xml
+++ b/xml/Microsoft.Extensions.Configuration.UserSecrets/PathHelper.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration.UserSecrets/UserSecretsIdAttribute.xml b/xml/Microsoft.Extensions.Configuration.UserSecrets/UserSecretsIdAttribute.xml
index b37ef199816..60b2bfb6fa0 100644
--- a/xml/Microsoft.Extensions.Configuration.UserSecrets/UserSecretsIdAttribute.xml
+++ b/xml/Microsoft.Extensions.Configuration.UserSecrets/UserSecretsIdAttribute.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration.Xml/XmlConfigurationProvider.xml b/xml/Microsoft.Extensions.Configuration.Xml/XmlConfigurationProvider.xml
index 48eb5fdd62f..3bfd20b3469 100644
--- a/xml/Microsoft.Extensions.Configuration.Xml/XmlConfigurationProvider.xml
+++ b/xml/Microsoft.Extensions.Configuration.Xml/XmlConfigurationProvider.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration.Xml/XmlConfigurationSource.xml b/xml/Microsoft.Extensions.Configuration.Xml/XmlConfigurationSource.xml
index 6ff0d680a24..03616f9dffa 100644
--- a/xml/Microsoft.Extensions.Configuration.Xml/XmlConfigurationSource.xml
+++ b/xml/Microsoft.Extensions.Configuration.Xml/XmlConfigurationSource.xml
@@ -72,12 +72,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Configuration.IConfigurationProvider</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Configuration.Xml/XmlDocumentDecryptor.xml b/xml/Microsoft.Extensions.Configuration.Xml/XmlDocumentDecryptor.xml
index ae1df4ba0ba..ed9812df3d2 100644
--- a/xml/Microsoft.Extensions.Configuration.Xml/XmlDocumentDecryptor.xml
+++ b/xml/Microsoft.Extensions.Configuration.Xml/XmlDocumentDecryptor.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration.Xml/XmlStreamConfigurationProvider.xml b/xml/Microsoft.Extensions.Configuration.Xml/XmlStreamConfigurationProvider.xml
index 8b908e012ff..00a18fe2cd2 100644
--- a/xml/Microsoft.Extensions.Configuration.Xml/XmlStreamConfigurationProvider.xml
+++ b/xml/Microsoft.Extensions.Configuration.Xml/XmlStreamConfigurationProvider.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration.Xml/XmlStreamConfigurationSource.xml b/xml/Microsoft.Extensions.Configuration.Xml/XmlStreamConfigurationSource.xml
index 13558c951f3..d1f393fa112 100644
--- a/xml/Microsoft.Extensions.Configuration.Xml/XmlStreamConfigurationSource.xml
+++ b/xml/Microsoft.Extensions.Configuration.Xml/XmlStreamConfigurationSource.xml
@@ -67,12 +67,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Configuration.IConfigurationProvider</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Configuration/ApplicationMetadataConfigurationBuilderExtensions.xml b/xml/Microsoft.Extensions.Configuration/ApplicationMetadataConfigurationBuilderExtensions.xml
index 0acdd4fbca0..7dde4af32e9 100644
--- a/xml/Microsoft.Extensions.Configuration/ApplicationMetadataConfigurationBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Configuration/ApplicationMetadataConfigurationBuilderExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/ChainedBuilderExtensions.xml b/xml/Microsoft.Extensions.Configuration/ChainedBuilderExtensions.xml
index 2a1720084d1..e893a790896 100644
--- a/xml/Microsoft.Extensions.Configuration/ChainedBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Configuration/ChainedBuilderExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/ChainedConfigurationProvider.xml b/xml/Microsoft.Extensions.Configuration/ChainedConfigurationProvider.xml
index cd469ef1283..79dcf49234c 100644
--- a/xml/Microsoft.Extensions.Configuration/ChainedConfigurationProvider.xml
+++ b/xml/Microsoft.Extensions.Configuration/ChainedConfigurationProvider.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/ChainedConfigurationSource.xml b/xml/Microsoft.Extensions.Configuration/ChainedConfigurationSource.xml
index 97af51dbb0d..a5e8de50ad7 100644
--- a/xml/Microsoft.Extensions.Configuration/ChainedConfigurationSource.xml
+++ b/xml/Microsoft.Extensions.Configuration/ChainedConfigurationSource.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -76,12 +72,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Configuration.IConfigurationProvider</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Configuration/CommandLineConfigurationExtensions.xml b/xml/Microsoft.Extensions.Configuration/CommandLineConfigurationExtensions.xml
index 2befc0d5074..a6bf60f043b 100644
--- a/xml/Microsoft.Extensions.Configuration/CommandLineConfigurationExtensions.xml
+++ b/xml/Microsoft.Extensions.Configuration/CommandLineConfigurationExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/ConfigurationBinder.xml b/xml/Microsoft.Extensions.Configuration/ConfigurationBinder.xml
index 13e8970d309..c6f329801ae 100644
--- a/xml/Microsoft.Extensions.Configuration/ConfigurationBinder.xml
+++ b/xml/Microsoft.Extensions.Configuration/ConfigurationBinder.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -320,10 +316,6 @@ For more information and examples, see [Binding](/dotnet/core/extensions/configu
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Binding strongly typed objects to configuration values requires generating dynamic code at runtime, for example instantiating generic types.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Binding strongly typed objects to configuration values requires generating dynamic code at runtime, for example instantiating generic types.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
@@ -382,10 +374,6 @@ For more information and examples, see [Binding](/dotnet/core/extensions/configu
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Binding strongly typed objects to configuration values requires generating dynamic code at runtime, for example instantiating generic types.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Binding strongly typed objects to configuration values requires generating dynamic code at runtime, for example instantiating generic types.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
diff --git a/xml/Microsoft.Extensions.Configuration/ConfigurationBuilder.xml b/xml/Microsoft.Extensions.Configuration/ConfigurationBuilder.xml
index 3ced21d658b..a655e2f8bb0 100644
--- a/xml/Microsoft.Extensions.Configuration/ConfigurationBuilder.xml
+++ b/xml/Microsoft.Extensions.Configuration/ConfigurationBuilder.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/ConfigurationDebugViewContext.xml b/xml/Microsoft.Extensions.Configuration/ConfigurationDebugViewContext.xml
index 4b1064a736b..7a1da006fee 100644
--- a/xml/Microsoft.Extensions.Configuration/ConfigurationDebugViewContext.xml
+++ b/xml/Microsoft.Extensions.Configuration/ConfigurationDebugViewContext.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -163,10 +159,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Configuration/ConfigurationExtensions.xml b/xml/Microsoft.Extensions.Configuration/ConfigurationExtensions.xml
index 02d84ddac14..937a3a0d831 100644
--- a/xml/Microsoft.Extensions.Configuration/ConfigurationExtensions.xml
+++ b/xml/Microsoft.Extensions.Configuration/ConfigurationExtensions.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -174,12 +170,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Configuration/ConfigurationKeyComparer.xml b/xml/Microsoft.Extensions.Configuration/ConfigurationKeyComparer.xml
index af79e79b3bd..ea4cca1d1d8 100644
--- a/xml/Microsoft.Extensions.Configuration/ConfigurationKeyComparer.xml
+++ b/xml/Microsoft.Extensions.Configuration/ConfigurationKeyComparer.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -79,12 +75,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Configuration/ConfigurationKeyNameAttribute.xml b/xml/Microsoft.Extensions.Configuration/ConfigurationKeyNameAttribute.xml
index dcaf365d411..b2803d8cf0d 100644
--- a/xml/Microsoft.Extensions.Configuration/ConfigurationKeyNameAttribute.xml
+++ b/xml/Microsoft.Extensions.Configuration/ConfigurationKeyNameAttribute.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/ConfigurationManager.xml b/xml/Microsoft.Extensions.Configuration/ConfigurationManager.xml
index df13b70cf71..d359ae3243a 100644
--- a/xml/Microsoft.Extensions.Configuration/ConfigurationManager.xml
+++ b/xml/Microsoft.Extensions.Configuration/ConfigurationManager.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/ConfigurationPath.xml b/xml/Microsoft.Extensions.Configuration/ConfigurationPath.xml
index 3d75baa4493..9d1fd99511c 100644
--- a/xml/Microsoft.Extensions.Configuration/ConfigurationPath.xml
+++ b/xml/Microsoft.Extensions.Configuration/ConfigurationPath.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -117,12 +113,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -151,12 +141,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
         <Attributes>
diff --git a/xml/Microsoft.Extensions.Configuration/ConfigurationProvider.xml b/xml/Microsoft.Extensions.Configuration/ConfigurationProvider.xml
index 6885068b09d..248afcf1b17 100644
--- a/xml/Microsoft.Extensions.Configuration/ConfigurationProvider.xml
+++ b/xml/Microsoft.Extensions.Configuration/ConfigurationProvider.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/ConfigurationReloadToken.xml b/xml/Microsoft.Extensions.Configuration/ConfigurationReloadToken.xml
index 4d6a687d67d..2d0c653241f 100644
--- a/xml/Microsoft.Extensions.Configuration/ConfigurationReloadToken.xml
+++ b/xml/Microsoft.Extensions.Configuration/ConfigurationReloadToken.xml
@@ -146,12 +146,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IDisposable</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Configuration/ConfigurationRoot.xml b/xml/Microsoft.Extensions.Configuration/ConfigurationRoot.xml
index f26c13bf56e..df71ca3bb3f 100644
--- a/xml/Microsoft.Extensions.Configuration/ConfigurationRoot.xml
+++ b/xml/Microsoft.Extensions.Configuration/ConfigurationRoot.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/ConfigurationRootExtensions.xml b/xml/Microsoft.Extensions.Configuration/ConfigurationRootExtensions.xml
index 2249332dc79..3e447251ad1 100644
--- a/xml/Microsoft.Extensions.Configuration/ConfigurationRootExtensions.xml
+++ b/xml/Microsoft.Extensions.Configuration/ConfigurationRootExtensions.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/ConfigurationSection.xml b/xml/Microsoft.Extensions.Configuration/ConfigurationSection.xml
index 2635f9c7c13..111b71ce489 100644
--- a/xml/Microsoft.Extensions.Configuration/ConfigurationSection.xml
+++ b/xml/Microsoft.Extensions.Configuration/ConfigurationSection.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -284,14 +280,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Configuration/EnvironmentVariablesExtensions.xml b/xml/Microsoft.Extensions.Configuration/EnvironmentVariablesExtensions.xml
index 9cf5ea76d69..aac954f9c9f 100644
--- a/xml/Microsoft.Extensions.Configuration/EnvironmentVariablesExtensions.xml
+++ b/xml/Microsoft.Extensions.Configuration/EnvironmentVariablesExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/FileConfigurationExtensions.xml b/xml/Microsoft.Extensions.Configuration/FileConfigurationExtensions.xml
index b93e45bb90e..eb48e62c916 100644
--- a/xml/Microsoft.Extensions.Configuration/FileConfigurationExtensions.xml
+++ b/xml/Microsoft.Extensions.Configuration/FileConfigurationExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/FileConfigurationProvider.xml b/xml/Microsoft.Extensions.Configuration/FileConfigurationProvider.xml
index ddc1e62750d..551200438e5 100644
--- a/xml/Microsoft.Extensions.Configuration/FileConfigurationProvider.xml
+++ b/xml/Microsoft.Extensions.Configuration/FileConfigurationProvider.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/FileConfigurationSource.xml b/xml/Microsoft.Extensions.Configuration/FileConfigurationSource.xml
index 36cafb608b4..c31f0c27489 100644
--- a/xml/Microsoft.Extensions.Configuration/FileConfigurationSource.xml
+++ b/xml/Microsoft.Extensions.Configuration/FileConfigurationSource.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -79,12 +75,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Configuration.IConfigurationProvider</ReturnType>
       </ReturnValue>
@@ -113,12 +103,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Configuration/FileLoadExceptionContext.xml b/xml/Microsoft.Extensions.Configuration/FileLoadExceptionContext.xml
index 57b98ffc658..e839df7d1ca 100644
--- a/xml/Microsoft.Extensions.Configuration/FileLoadExceptionContext.xml
+++ b/xml/Microsoft.Extensions.Configuration/FileLoadExceptionContext.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/IConfiguration.xml b/xml/Microsoft.Extensions.Configuration/IConfiguration.xml
index ac530963a85..5c91d150746 100644
--- a/xml/Microsoft.Extensions.Configuration/IConfiguration.xml
+++ b/xml/Microsoft.Extensions.Configuration/IConfiguration.xml
@@ -21,12 +21,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a set of key/value application configuration properties.
diff --git a/xml/Microsoft.Extensions.Configuration/IConfigurationBuilder.xml b/xml/Microsoft.Extensions.Configuration/IConfigurationBuilder.xml
index 39f4c0ec103..21436783e7b 100644
--- a/xml/Microsoft.Extensions.Configuration/IConfigurationBuilder.xml
+++ b/xml/Microsoft.Extensions.Configuration/IConfigurationBuilder.xml
@@ -21,12 +21,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a type used to build application configuration.
diff --git a/xml/Microsoft.Extensions.Configuration/IConfigurationProvider.xml b/xml/Microsoft.Extensions.Configuration/IConfigurationProvider.xml
index 062b25463ed..9664cd1e5ca 100644
--- a/xml/Microsoft.Extensions.Configuration/IConfigurationProvider.xml
+++ b/xml/Microsoft.Extensions.Configuration/IConfigurationProvider.xml
@@ -21,12 +21,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Provides configuration key/values for an application.
diff --git a/xml/Microsoft.Extensions.Configuration/IConfigurationRoot.xml b/xml/Microsoft.Extensions.Configuration/IConfigurationRoot.xml
index 321b34a675c..846f2027900 100644
--- a/xml/Microsoft.Extensions.Configuration/IConfigurationRoot.xml
+++ b/xml/Microsoft.Extensions.Configuration/IConfigurationRoot.xml
@@ -25,12 +25,6 @@
       <InterfaceName>Microsoft.Extensions.Configuration.IConfiguration</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents the root of an <see cref="T:Microsoft.Extensions.Configuration.IConfiguration" /> hierarchy.
diff --git a/xml/Microsoft.Extensions.Configuration/IConfigurationSection.xml b/xml/Microsoft.Extensions.Configuration/IConfigurationSection.xml
index 971755beac5..4e1b1757909 100644
--- a/xml/Microsoft.Extensions.Configuration/IConfigurationSection.xml
+++ b/xml/Microsoft.Extensions.Configuration/IConfigurationSection.xml
@@ -25,12 +25,6 @@
       <InterfaceName>Microsoft.Extensions.Configuration.IConfiguration</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a section of application configuration values.
@@ -104,14 +98,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Configuration/IConfigurationSource.xml b/xml/Microsoft.Extensions.Configuration/IConfigurationSource.xml
index 08df2241ea2..f60f4941379 100644
--- a/xml/Microsoft.Extensions.Configuration/IConfigurationSource.xml
+++ b/xml/Microsoft.Extensions.Configuration/IConfigurationSource.xml
@@ -21,12 +21,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a source of configuration key/values for an application.
diff --git a/xml/Microsoft.Extensions.Configuration/IniConfigurationExtensions.xml b/xml/Microsoft.Extensions.Configuration/IniConfigurationExtensions.xml
index c17b6776532..f5499c9c1b5 100644
--- a/xml/Microsoft.Extensions.Configuration/IniConfigurationExtensions.xml
+++ b/xml/Microsoft.Extensions.Configuration/IniConfigurationExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/JsonConfigurationExtensions.xml b/xml/Microsoft.Extensions.Configuration/JsonConfigurationExtensions.xml
index cfbdc0b7966..7e21e35cb33 100644
--- a/xml/Microsoft.Extensions.Configuration/JsonConfigurationExtensions.xml
+++ b/xml/Microsoft.Extensions.Configuration/JsonConfigurationExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/KeyPerFileConfigurationBuilderExtensions.xml b/xml/Microsoft.Extensions.Configuration/KeyPerFileConfigurationBuilderExtensions.xml
index 3c34dd9a4e5..971200cec41 100644
--- a/xml/Microsoft.Extensions.Configuration/KeyPerFileConfigurationBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Configuration/KeyPerFileConfigurationBuilderExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/MemoryConfigurationBuilderExtensions.xml b/xml/Microsoft.Extensions.Configuration/MemoryConfigurationBuilderExtensions.xml
index ebf6d6db875..86eff7d72e9 100644
--- a/xml/Microsoft.Extensions.Configuration/MemoryConfigurationBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Configuration/MemoryConfigurationBuilderExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/StreamConfigurationProvider.xml b/xml/Microsoft.Extensions.Configuration/StreamConfigurationProvider.xml
index cd8d2e9d470..e714555f844 100644
--- a/xml/Microsoft.Extensions.Configuration/StreamConfigurationProvider.xml
+++ b/xml/Microsoft.Extensions.Configuration/StreamConfigurationProvider.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/StreamConfigurationSource.xml b/xml/Microsoft.Extensions.Configuration/StreamConfigurationSource.xml
index c434a280ff7..ab1b835c5fe 100644
--- a/xml/Microsoft.Extensions.Configuration/StreamConfigurationSource.xml
+++ b/xml/Microsoft.Extensions.Configuration/StreamConfigurationSource.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -74,12 +70,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Configuration.IConfigurationProvider</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Configuration/UserSecretsConfigurationExtensions.xml b/xml/Microsoft.Extensions.Configuration/UserSecretsConfigurationExtensions.xml
index 16ea1706d1b..13a5e06185c 100644
--- a/xml/Microsoft.Extensions.Configuration/UserSecretsConfigurationExtensions.xml
+++ b/xml/Microsoft.Extensions.Configuration/UserSecretsConfigurationExtensions.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Configuration/XmlConfigurationExtensions.xml b/xml/Microsoft.Extensions.Configuration/XmlConfigurationExtensions.xml
index 511d56a2833..48504cfddfa 100644
--- a/xml/Microsoft.Extensions.Configuration/XmlConfigurationExtensions.xml
+++ b/xml/Microsoft.Extensions.Configuration/XmlConfigurationExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection.Extensions/ServiceCollectionDescriptorExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection.Extensions/ServiceCollectionDescriptorExtensions.xml
index 3ded07d4e83..616ea72b445 100644
--- a/xml/Microsoft.Extensions.DependencyInjection.Extensions/ServiceCollectionDescriptorExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection.Extensions/ServiceCollectionDescriptorExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -668,8 +664,8 @@
       <Docs>
         <typeparam name="TService">The type of the service to add.</typeparam>
         <param name="services">The <see cref="T:Microsoft.Extensions.DependencyInjection.IServiceCollection" />.</param>
-        <param name="implementationFactory">The factory that creates the service.</param>
         <param name="serviceKey">The service key.</param>
+        <param name="implementationFactory">The factory that creates the service.</param>
         <summary>
             Adds the specified <typeparamref name="TService" /> as a <see cref="F:Microsoft.Extensions.DependencyInjection.ServiceLifetime.Scoped" /> service
             using the factory specified in <paramref name="implementationFactory" />
diff --git a/xml/Microsoft.Extensions.DependencyInjection.Specification/KeyedDependencyInjectionSpecificationTests+Service.xml b/xml/Microsoft.Extensions.DependencyInjection.Specification/KeyedDependencyInjectionSpecificationTests+Service.xml
index 43e34fe11f6..4a869005354 100644
--- a/xml/Microsoft.Extensions.DependencyInjection.Specification/KeyedDependencyInjectionSpecificationTests+Service.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection.Specification/KeyedDependencyInjectionSpecificationTests+Service.xml
@@ -79,12 +79,6 @@
         <AssemblyName>Microsoft.Extensions.DependencyInjection.Specification.Tests</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ActivatorUtilities.xml b/xml/Microsoft.Extensions.DependencyInjection/ActivatorUtilities.xml
index 1743e49b567..e72d5f1fe48 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ActivatorUtilities.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ActivatorUtilities.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ApplicationEnricherServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/ApplicationEnricherServiceCollectionExtensions.xml
index d92ea2fcaf4..e8c864a13da 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ApplicationEnricherServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ApplicationEnricherServiceCollectionExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ApplicationMetadataServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/ApplicationMetadataServiceCollectionExtensions.xml
index 13ce9d30452..ab82f38673a 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ApplicationMetadataServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ApplicationMetadataServiceCollectionExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/AsyncServiceScope.xml b/xml/Microsoft.Extensions.DependencyInjection/AsyncServiceScope.xml
index 3f1001a4f37..4624e8c2310 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/AsyncServiceScope.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/AsyncServiceScope.xml
@@ -56,12 +56,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="serviceScope" Type="Microsoft.Extensions.DependencyInjection.IServiceScope" />
       </Parameters>
@@ -148,10 +142,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.IServiceProvider</ReturnType>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/AsyncStateExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/AsyncStateExtensions.xml
index f471baf6ed4..ad2e52c25f9 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/AsyncStateExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/AsyncStateExtensions.xml
@@ -41,12 +41,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.DependencyInjection.IServiceCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/AutoActivationExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/AutoActivationExtensions.xml
index 2bd1dcc3977..f77c34fda43 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/AutoActivationExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/AutoActivationExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/CommonHealthChecksExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/CommonHealthChecksExtensions.xml
index e5f396e1ba3..3e782073c26 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/CommonHealthChecksExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/CommonHealthChecksExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ContextualOptionsServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/ContextualOptionsServiceCollectionExtensions.xml
index e7ca5275cdc..5aec1a84470 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ContextualOptionsServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ContextualOptionsServiceCollectionExtensions.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/DefaultServiceProviderFactory.xml b/xml/Microsoft.Extensions.DependencyInjection/DefaultServiceProviderFactory.xml
index d13bea0366e..7fb3f6c65df 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/DefaultServiceProviderFactory.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/DefaultServiceProviderFactory.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/EncoderServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/EncoderServiceCollectionExtensions.xml
index 6eea4420e26..6b7e8921b27 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/EncoderServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/EncoderServiceCollectionExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/EnrichmentServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/EnrichmentServiceCollectionExtensions.xml
index 923699d3ca2..b7396676677 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/EnrichmentServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/EnrichmentServiceCollectionExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/EntityFrameworkCoreHealthChecksBuilderExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/EntityFrameworkCoreHealthChecksBuilderExtensions.xml
index 4922e09ddfd..2be517b5342 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/EntityFrameworkCoreHealthChecksBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/EntityFrameworkCoreHealthChecksBuilderExtensions.xml
@@ -42,12 +42,6 @@
         <AssemblyVersion>8.0.10.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.DependencyInjection.IHealthChecksBuilder</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ExceptionSummarizationServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/ExceptionSummarizationServiceCollectionExtensions.xml
index 30c0fe99dc2..6d5500bcf4b 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ExceptionSummarizationServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ExceptionSummarizationServiceCollectionExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/FakeLoggerServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/FakeLoggerServiceCollectionExtensions.xml
index d40490bc95f..01ba4d8b45e 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/FakeLoggerServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/FakeLoggerServiceCollectionExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/FakeRedactionServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/FakeRedactionServiceCollectionExtensions.xml
index 170ff4a75f5..a901c135cad 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/FakeRedactionServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/FakeRedactionServiceCollectionExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/FromKeyedServicesAttribute.xml b/xml/Microsoft.Extensions.DependencyInjection/FromKeyedServicesAttribute.xml
index d884f6d2edc..18b88d563b7 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/FromKeyedServicesAttribute.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/FromKeyedServicesAttribute.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/HealthCheckServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/HealthCheckServiceCollectionExtensions.xml
index 758ac011e82..622f608fc12 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/HealthCheckServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/HealthCheckServiceCollectionExtensions.xml
@@ -40,12 +40,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.DependencyInjection.IHealthChecksBuilder</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/HealthChecksBuilderAddCheckExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/HealthChecksBuilderAddCheckExtensions.xml
index 791e26f4641..fe618809407 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/HealthChecksBuilderAddCheckExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/HealthChecksBuilderAddCheckExtensions.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/HealthChecksBuilderDelegateExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/HealthChecksBuilderDelegateExtensions.xml
index 191177b4c87..1cc9461d166 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/HealthChecksBuilderDelegateExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/HealthChecksBuilderDelegateExtensions.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/HttpClientBuilderExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/HttpClientBuilderExtensions.xml
index d493ceb346c..74d7256e788 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/HttpClientBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/HttpClientBuilderExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/HttpClientFactoryServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/HttpClientFactoryServiceCollectionExtensions.xml
index ad4082ceeaa..09ec80ad653 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/HttpClientFactoryServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/HttpClientFactoryServiceCollectionExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/HttpClientLatencyTelemetryExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/HttpClientLatencyTelemetryExtensions.xml
index b112bbfa069..df05fb224fd 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/HttpClientLatencyTelemetryExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/HttpClientLatencyTelemetryExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/HttpClientLoggingHttpClientBuilderExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/HttpClientLoggingHttpClientBuilderExtensions.xml
index 17bb1e7aad4..2b4cc1ab27a 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/HttpClientLoggingHttpClientBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/HttpClientLoggingHttpClientBuilderExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/HttpClientLoggingServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/HttpClientLoggingServiceCollectionExtensions.xml
index b1a4c87fa7f..4a1992f9af2 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/HttpClientLoggingServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/HttpClientLoggingServiceCollectionExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/HttpDiagnosticsServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/HttpDiagnosticsServiceCollectionExtensions.xml
index 9e78762d39b..5633b963677 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/HttpDiagnosticsServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/HttpDiagnosticsServiceCollectionExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/HybridCacheBuilderExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/HybridCacheBuilderExtensions.xml
index 932a4f91d77..10adc5223f7 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/HybridCacheBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/HybridCacheBuilderExtensions.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/HybridCacheServiceExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/HybridCacheServiceExtensions.xml
index 53f57e81c6d..fbe66f66aa7 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/HybridCacheServiceExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/HybridCacheServiceExtensions.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/IHealthChecksBuilder.xml b/xml/Microsoft.Extensions.DependencyInjection/IHealthChecksBuilder.xml
index 8076a2361b9..422c2f323d6 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/IHealthChecksBuilder.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/IHealthChecksBuilder.xml
@@ -17,12 +17,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             A builder used to register health checks.
diff --git a/xml/Microsoft.Extensions.DependencyInjection/IHttpClientBuilder.xml b/xml/Microsoft.Extensions.DependencyInjection/IHttpClientBuilder.xml
index bec30e03075..8781d44ec56 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/IHttpClientBuilder.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/IHttpClientBuilder.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             A builder for configuring named <see cref="T:System.Net.Http.HttpClient" /> instances returned by <see cref="T:System.Net.Http.IHttpClientFactory" />.
diff --git a/xml/Microsoft.Extensions.DependencyInjection/IKeyedServiceProvider.xml b/xml/Microsoft.Extensions.DependencyInjection/IKeyedServiceProvider.xml
index cabfa32805a..182788b1eec 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/IKeyedServiceProvider.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/IKeyedServiceProvider.xml
@@ -35,12 +35,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -83,12 +77,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/IServiceProviderFactory`1.xml b/xml/Microsoft.Extensions.DependencyInjection/IServiceProviderFactory`1.xml
index d5fda9d4640..37f561f0e2f 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/IServiceProviderFactory`1.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/IServiceProviderFactory`1.xml
@@ -23,12 +23,6 @@
     <TypeParameter Name="TContainerBuilder" />
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TContainerBuilder" />
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/IServiceProviderIsKeyedService.xml b/xml/Microsoft.Extensions.DependencyInjection/IServiceProviderIsKeyedService.xml
index 7ea3bb541d7..eb8be5f0deb 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/IServiceProviderIsKeyedService.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/IServiceProviderIsKeyedService.xml
@@ -36,12 +36,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/IServiceProviderIsService.xml b/xml/Microsoft.Extensions.DependencyInjection/IServiceProviderIsService.xml
index 40fd616ff6e..2fd2895c945 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/IServiceProviderIsService.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/IServiceProviderIsService.xml
@@ -13,12 +13,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Provides methods to determine if the specified type is available from the <see cref="T:System.IServiceProvider" />.
diff --git a/xml/Microsoft.Extensions.DependencyInjection/IServiceScope.xml b/xml/Microsoft.Extensions.DependencyInjection/IServiceScope.xml
index ff9a51b4906..2f6ee0b72aa 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/IServiceScope.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/IServiceScope.xml
@@ -25,12 +25,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Defines a disposable service scope.
diff --git a/xml/Microsoft.Extensions.DependencyInjection/IServiceScopeFactory.xml b/xml/Microsoft.Extensions.DependencyInjection/IServiceScopeFactory.xml
index e29cd8d304f..88349c4ad5c 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/IServiceScopeFactory.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/IServiceScopeFactory.xml
@@ -21,12 +21,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Creates instances of <see cref="T:Microsoft.Extensions.DependencyInjection.IServiceScope" />, which is used to create
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ISocketsHttpHandlerBuilder.xml b/xml/Microsoft.Extensions.DependencyInjection/ISocketsHttpHandlerBuilder.xml
index 7af9e535644..1379f33b21b 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ISocketsHttpHandlerBuilder.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ISocketsHttpHandlerBuilder.xml
@@ -11,12 +11,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Configures <see cref="T:System.Net.Http.SocketsHttpHandler" /> for a named
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ISupportRequiredService.xml b/xml/Microsoft.Extensions.DependencyInjection/ISupportRequiredService.xml
index 5974360821b..46516b3d0a4 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ISupportRequiredService.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ISupportRequiredService.xml
@@ -21,12 +21,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Optional contract used by <see cref="M:Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService``1(System.IServiceProvider)" />
diff --git a/xml/Microsoft.Extensions.DependencyInjection/KeyedService.xml b/xml/Microsoft.Extensions.DependencyInjection/KeyedService.xml
index e8916743d47..2e877ab39fe 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/KeyedService.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/KeyedService.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/KubernetesProbesExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/KubernetesProbesExtensions.xml
index c4526805fd4..7e3466cda7c 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/KubernetesProbesExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/KubernetesProbesExtensions.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/LatencyConsoleExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/LatencyConsoleExtensions.xml
index 002ac34c2b7..c67f8898030 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/LatencyConsoleExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/LatencyConsoleExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/LatencyContextExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/LatencyContextExtensions.xml
index 3f8be231f74..66192fe6e98 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/LatencyContextExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/LatencyContextExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/LatencyRegistryServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/LatencyRegistryServiceCollectionExtensions.xml
index 4a983eaf9e8..0dbd1620bb3 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/LatencyRegistryServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/LatencyRegistryServiceCollectionExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/LocalizationServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/LocalizationServiceCollectionExtensions.xml
index d591aa15676..cb315efd3f7 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/LocalizationServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/LocalizationServiceCollectionExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/LoggingServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/LoggingServiceCollectionExtensions.xml
index 65beac32cdb..7500c94ece3 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/LoggingServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/LoggingServiceCollectionExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/MemoryCacheServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/MemoryCacheServiceCollectionExtensions.xml
index 601ae0f14b8..89318274811 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/MemoryCacheServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/MemoryCacheServiceCollectionExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/MetricsServiceExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/MetricsServiceExtensions.xml
index bfee00f75ec..1ac4e282ff7 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/MetricsServiceExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/MetricsServiceExtensions.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/NullLatencyContextServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/NullLatencyContextServiceCollectionExtensions.xml
index a936953aea3..4101f768fc3 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/NullLatencyContextServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/NullLatencyContextServiceCollectionExtensions.xml
@@ -41,12 +41,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.DependencyInjection.IServiceCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ObjectPoolServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/ObjectPoolServiceCollectionExtensions.xml
index 3a9ccb7ad28..22d4d90d0fd 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ObjectPoolServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ObjectPoolServiceCollectionExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/OptionsBuilderConfigurationExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/OptionsBuilderConfigurationExtensions.xml
index f0959fb4b76..1330f0abcae 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/OptionsBuilderConfigurationExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/OptionsBuilderConfigurationExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/OptionsBuilderDataAnnotationsExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/OptionsBuilderDataAnnotationsExtensions.xml
index 2af4f9f29bd..ba44a09fcb4 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/OptionsBuilderDataAnnotationsExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/OptionsBuilderDataAnnotationsExtensions.xml
@@ -45,10 +45,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Uses DataAnnotationValidateOptions which is unsafe given that the options type passed in when calling Validate cannot be statically analyzed so its members may be trimmed.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Uses DataAnnotationValidateOptions which is unsafe given that the options type passed in when calling Validate cannot be statically analyzed so its members may be trimmed.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Options.OptionsBuilder&lt;TOptions&gt;</ReturnType>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/OptionsBuilderExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/OptionsBuilderExtensions.xml
index 2e526b71a8f..10628467335 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/OptionsBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/OptionsBuilderExtensions.xml
@@ -55,12 +55,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Options.OptionsBuilder&lt;TOptions&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/OptionsConfigurationServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/OptionsConfigurationServiceCollectionExtensions.xml
index 0e81e17d810..f1f3a5895d1 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/OptionsConfigurationServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/OptionsConfigurationServiceCollectionExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/OptionsServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/OptionsServiceCollectionExtensions.xml
index af6e22eaf71..5bdaf44c94d 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/OptionsServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/OptionsServiceCollectionExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ProcessEnricherServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/ProcessEnricherServiceCollectionExtensions.xml
index 88f813df2e4..25087a3f4bf 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ProcessEnricherServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ProcessEnricherServiceCollectionExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/RedactionServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/RedactionServiceCollectionExtensions.xml
index d6ef64f680e..af70de898fb 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/RedactionServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/RedactionServiceCollectionExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ResilienceHttpClientBuilderExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/ResilienceHttpClientBuilderExtensions.xml
index 02b006bed77..3b08261424e 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ResilienceHttpClientBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ResilienceHttpClientBuilderExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ResilienceServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/ResilienceServiceCollectionExtensions.xml
index 740bd67fbd9..c69721021ad 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ResilienceServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ResilienceServiceCollectionExtensions.xml
@@ -41,12 +41,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.DependencyInjection.IServiceCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ResourceMonitoringServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/ResourceMonitoringServiceCollectionExtensions.xml
index aa976e26bc0..b19cd4f2207 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ResourceMonitoringServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ResourceMonitoringServiceCollectionExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ResourceUtilizationHealthCheckExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/ResourceUtilizationHealthCheckExtensions.xml
index 76dd0046579..91643e2bb79 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ResourceUtilizationHealthCheckExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ResourceUtilizationHealthCheckExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ServiceCollection.xml b/xml/Microsoft.Extensions.DependencyInjection/ServiceCollection.xml
index ab68121b740..c84fa74026b 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ServiceCollection.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ServiceCollection.xml
@@ -67,10 +67,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ServiceCollectionContainerBuilderExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/ServiceCollectionContainerBuilderExtensions.xml
index a194a673c7e..6d56d5adc22 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ServiceCollectionContainerBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ServiceCollectionContainerBuilderExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ServiceCollectionHostedServiceExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/ServiceCollectionHostedServiceExtensions.xml
index 181fd067bd2..78726bae646 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ServiceCollectionHostedServiceExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ServiceCollectionHostedServiceExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ServiceCollectionServiceExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/ServiceCollectionServiceExtensions.xml
index f9bd23c47e1..5191234dbce 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ServiceCollectionServiceExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ServiceCollectionServiceExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ServiceDescriptor.xml b/xml/Microsoft.Extensions.DependencyInjection/ServiceDescriptor.xml
index e206e801347..17118f9f548 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ServiceDescriptor.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ServiceDescriptor.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -485,10 +481,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -526,10 +518,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -620,10 +608,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -661,10 +645,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -1823,10 +1803,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ServiceProvider.xml b/xml/Microsoft.Extensions.DependencyInjection/ServiceProvider.xml
index b8bb9bfda01..0d46b40f171 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ServiceProvider.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ServiceProvider.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -129,12 +125,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ServiceProviderKeyedServiceExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/ServiceProviderKeyedServiceExtensions.xml
index 0fa369a8e86..7e3018a3e81 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ServiceProviderKeyedServiceExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ServiceProviderKeyedServiceExtensions.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -44,12 +40,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/ServiceProviderServiceExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/ServiceProviderServiceExtensions.xml
index 158ab03b43d..5ec9a94fa04 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/ServiceProviderServiceExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/ServiceProviderServiceExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -206,12 +202,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/SocketsHttpHandlerBuilderExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/SocketsHttpHandlerBuilderExtensions.xml
index 44eb4968fc2..e0baee04809 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/SocketsHttpHandlerBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/SocketsHttpHandlerBuilderExtensions.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/SqlServerCachingServicesExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/SqlServerCachingServicesExtensions.xml
index 9337ae008eb..e18796d0b6e 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/SqlServerCachingServicesExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/SqlServerCachingServicesExtensions.xml
@@ -31,10 +31,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Extension methods for setting up Microsoft SQL Server distributed cache services in an <see cref="T:Microsoft.Extensions.DependencyInjection.IServiceCollection" />.</summary>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/StackExchangeRedisCacheServiceCollectionExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/StackExchangeRedisCacheServiceCollectionExtensions.xml
index a0a0861e40a..01c4cafb96e 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/StackExchangeRedisCacheServiceCollectionExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/StackExchangeRedisCacheServiceCollectionExtensions.xml
@@ -36,12 +36,6 @@
         <AssemblyName>Microsoft.Extensions.Caching.StackExchangeRedis</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.DependencyInjection.IServiceCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.DependencyInjection/TcpEndpointProbesExtensions.xml b/xml/Microsoft.Extensions.DependencyInjection/TcpEndpointProbesExtensions.xml
index 7d8014b2e74..ebb2ea2c34d 100644
--- a/xml/Microsoft.Extensions.DependencyInjection/TcpEndpointProbesExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyInjection/TcpEndpointProbesExtensions.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.DependencyModel.Resolution/AppBaseCompilationAssemblyResolver.xml b/xml/Microsoft.Extensions.DependencyModel.Resolution/AppBaseCompilationAssemblyResolver.xml
index 492138e9afb..b4a156581a3 100644
--- a/xml/Microsoft.Extensions.DependencyModel.Resolution/AppBaseCompilationAssemblyResolver.xml
+++ b/xml/Microsoft.Extensions.DependencyModel.Resolution/AppBaseCompilationAssemblyResolver.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/Microsoft.Extensions.DependencyModel.Resolution/CompositeCompilationAssemblyResolver.xml b/xml/Microsoft.Extensions.DependencyModel.Resolution/CompositeCompilationAssemblyResolver.xml
index 6a645b67042..9aaaf09cdba 100644
--- a/xml/Microsoft.Extensions.DependencyModel.Resolution/CompositeCompilationAssemblyResolver.xml
+++ b/xml/Microsoft.Extensions.DependencyModel.Resolution/CompositeCompilationAssemblyResolver.xml
@@ -41,12 +41,6 @@
         <AssemblyVersion>8.0.0.2</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="resolvers" Type="Microsoft.Extensions.DependencyModel.Resolution.ICompilationAssemblyResolver[]" />
       </Parameters>
@@ -72,12 +66,6 @@
         <AssemblyVersion>8.0.0.2</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.DependencyModel.Resolution/DotNetReferenceAssembliesPathResolver.xml b/xml/Microsoft.Extensions.DependencyModel.Resolution/DotNetReferenceAssembliesPathResolver.xml
index 85f8a39f0f6..2f3a00fa300 100644
--- a/xml/Microsoft.Extensions.DependencyModel.Resolution/DotNetReferenceAssembliesPathResolver.xml
+++ b/xml/Microsoft.Extensions.DependencyModel.Resolution/DotNetReferenceAssembliesPathResolver.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -86,12 +82,6 @@
         <AssemblyVersion>8.0.0.2</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.DependencyModel.Resolution/ICompilationAssemblyResolver.xml b/xml/Microsoft.Extensions.DependencyModel.Resolution/ICompilationAssemblyResolver.xml
index 2498bb9772b..793943eed26 100644
--- a/xml/Microsoft.Extensions.DependencyModel.Resolution/ICompilationAssemblyResolver.xml
+++ b/xml/Microsoft.Extensions.DependencyModel.Resolution/ICompilationAssemblyResolver.xml
@@ -16,12 +16,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>To be added.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/Microsoft.Extensions.DependencyModel.Resolution/PackageCompilationAssemblyResolver.xml b/xml/Microsoft.Extensions.DependencyModel.Resolution/PackageCompilationAssemblyResolver.xml
index 2ec2c73ac27..105b5af6746 100644
--- a/xml/Microsoft.Extensions.DependencyModel.Resolution/PackageCompilationAssemblyResolver.xml
+++ b/xml/Microsoft.Extensions.DependencyModel.Resolution/PackageCompilationAssemblyResolver.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/Microsoft.Extensions.DependencyModel.Resolution/ReferenceAssemblyPathResolver.xml b/xml/Microsoft.Extensions.DependencyModel.Resolution/ReferenceAssemblyPathResolver.xml
index 4150afdd543..0130c1e627a 100644
--- a/xml/Microsoft.Extensions.DependencyModel.Resolution/ReferenceAssemblyPathResolver.xml
+++ b/xml/Microsoft.Extensions.DependencyModel.Resolution/ReferenceAssemblyPathResolver.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/Microsoft.Extensions.DependencyModel/CompilationLibrary.xml b/xml/Microsoft.Extensions.DependencyModel/CompilationLibrary.xml
index 22717dd857c..324299099bc 100644
--- a/xml/Microsoft.Extensions.DependencyModel/CompilationLibrary.xml
+++ b/xml/Microsoft.Extensions.DependencyModel/CompilationLibrary.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a compile time library dependency in a dependency manifest.</summary>
diff --git a/xml/Microsoft.Extensions.DependencyModel/CompilationOptions.xml b/xml/Microsoft.Extensions.DependencyModel/CompilationOptions.xml
index 56607ac36ab..acfd981d989 100644
--- a/xml/Microsoft.Extensions.DependencyModel/CompilationOptions.xml
+++ b/xml/Microsoft.Extensions.DependencyModel/CompilationOptions.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -147,10 +143,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.DependencyModel.CompilationOptions</ReturnType>
diff --git a/xml/Microsoft.Extensions.DependencyModel/Dependency.xml b/xml/Microsoft.Extensions.DependencyModel/Dependency.xml
index 8f8e08253da..18c8751db1e 100644
--- a/xml/Microsoft.Extensions.DependencyModel/Dependency.xml
+++ b/xml/Microsoft.Extensions.DependencyModel/Dependency.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -109,12 +105,6 @@
         <AssemblyVersion>8.0.0.2</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.DependencyModel/DependencyContext.xml b/xml/Microsoft.Extensions.DependencyModel/DependencyContext.xml
index 3d32a738780..50fed0bef3d 100644
--- a/xml/Microsoft.Extensions.DependencyModel/DependencyContext.xml
+++ b/xml/Microsoft.Extensions.DependencyModel/DependencyContext.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about application dependencies.</summary>
@@ -152,10 +148,6 @@ This property is only fully populated when the [PreserveCompilationContext](/dot
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.DependencyModel.DependencyContext</ReturnType>
diff --git a/xml/Microsoft.Extensions.DependencyModel/DependencyContextExtensions.xml b/xml/Microsoft.Extensions.DependencyModel/DependencyContextExtensions.xml
index 722dcd3a334..87569e7a419 100644
--- a/xml/Microsoft.Extensions.DependencyModel/DependencyContextExtensions.xml
+++ b/xml/Microsoft.Extensions.DependencyModel/DependencyContextExtensions.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/Microsoft.Extensions.DependencyModel/DependencyContextJsonReader.xml b/xml/Microsoft.Extensions.DependencyModel/DependencyContextJsonReader.xml
index 6b294bfc0f9..6ba0bf2bd28 100644
--- a/xml/Microsoft.Extensions.DependencyModel/DependencyContextJsonReader.xml
+++ b/xml/Microsoft.Extensions.DependencyModel/DependencyContextJsonReader.xml
@@ -115,12 +115,6 @@
         <AssemblyVersion>8.0.0.2</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.DependencyModel.DependencyContext</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.DependencyModel/DependencyContextLoader.xml b/xml/Microsoft.Extensions.DependencyModel/DependencyContextLoader.xml
index a66ea6d1a02..c385d1ef3bd 100644
--- a/xml/Microsoft.Extensions.DependencyModel/DependencyContextLoader.xml
+++ b/xml/Microsoft.Extensions.DependencyModel/DependencyContextLoader.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/Microsoft.Extensions.DependencyModel/DependencyContextWriter.xml b/xml/Microsoft.Extensions.DependencyModel/DependencyContextWriter.xml
index 0a3514045a4..b5d77e6c8ee 100644
--- a/xml/Microsoft.Extensions.DependencyModel/DependencyContextWriter.xml
+++ b/xml/Microsoft.Extensions.DependencyModel/DependencyContextWriter.xml
@@ -55,12 +55,6 @@
         <AssemblyVersion>8.0.0.2</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.DependencyModel/IDependencyContextReader.xml b/xml/Microsoft.Extensions.DependencyModel/IDependencyContextReader.xml
index 3b28f1cb919..6142587ccbb 100644
--- a/xml/Microsoft.Extensions.DependencyModel/IDependencyContextReader.xml
+++ b/xml/Microsoft.Extensions.DependencyModel/IDependencyContextReader.xml
@@ -38,12 +38,6 @@
         <AssemblyVersion>8.0.0.2</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.DependencyModel.DependencyContext</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.DependencyModel/Library.xml b/xml/Microsoft.Extensions.DependencyModel/Library.xml
index dcb92272ed4..f1e30a0a44d 100644
--- a/xml/Microsoft.Extensions.DependencyModel/Library.xml
+++ b/xml/Microsoft.Extensions.DependencyModel/Library.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a library dependency in a dependency manifest.</summary>
@@ -243,10 +239,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -275,10 +267,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -329,10 +317,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -361,10 +345,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.DependencyModel/ResourceAssembly.xml b/xml/Microsoft.Extensions.DependencyModel/ResourceAssembly.xml
index b1cc88cb6c5..c259a210da5 100644
--- a/xml/Microsoft.Extensions.DependencyModel/ResourceAssembly.xml
+++ b/xml/Microsoft.Extensions.DependencyModel/ResourceAssembly.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/Microsoft.Extensions.DependencyModel/RuntimeAssembly.xml b/xml/Microsoft.Extensions.DependencyModel/RuntimeAssembly.xml
index 92c7d8eabc1..cc817b74b14 100644
--- a/xml/Microsoft.Extensions.DependencyModel/RuntimeAssembly.xml
+++ b/xml/Microsoft.Extensions.DependencyModel/RuntimeAssembly.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/Microsoft.Extensions.DependencyModel/RuntimeAssetGroup.xml b/xml/Microsoft.Extensions.DependencyModel/RuntimeAssetGroup.xml
index d765e7e5624..33b7b4cd548 100644
--- a/xml/Microsoft.Extensions.DependencyModel/RuntimeAssetGroup.xml
+++ b/xml/Microsoft.Extensions.DependencyModel/RuntimeAssetGroup.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -174,10 +170,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.DependencyModel/RuntimeFallbacks.xml b/xml/Microsoft.Extensions.DependencyModel/RuntimeFallbacks.xml
index 59c11e2851b..26cf613bfd3 100644
--- a/xml/Microsoft.Extensions.DependencyModel/RuntimeFallbacks.xml
+++ b/xml/Microsoft.Extensions.DependencyModel/RuntimeFallbacks.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/Microsoft.Extensions.DependencyModel/RuntimeFile.xml b/xml/Microsoft.Extensions.DependencyModel/RuntimeFile.xml
index 9e11a28ce8d..1a65080a293 100644
--- a/xml/Microsoft.Extensions.DependencyModel/RuntimeFile.xml
+++ b/xml/Microsoft.Extensions.DependencyModel/RuntimeFile.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -129,10 +125,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.DependencyModel/RuntimeLibrary.xml b/xml/Microsoft.Extensions.DependencyModel/RuntimeLibrary.xml
index d10496627ad..9d885db0b01 100644
--- a/xml/Microsoft.Extensions.DependencyModel/RuntimeLibrary.xml
+++ b/xml/Microsoft.Extensions.DependencyModel/RuntimeLibrary.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a runtime library dependency in a dependency manifest.</summary>
diff --git a/xml/Microsoft.Extensions.DependencyModel/TargetInfo.xml b/xml/Microsoft.Extensions.DependencyModel/TargetInfo.xml
index f27dc9cea43..c775ab135ba 100644
--- a/xml/Microsoft.Extensions.DependencyModel/TargetInfo.xml
+++ b/xml/Microsoft.Extensions.DependencyModel/TargetInfo.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -87,10 +83,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Enrichment/ApplicationEnricherTags.xml b/xml/Microsoft.Extensions.Diagnostics.Enrichment/ApplicationEnricherTags.xml
index 9f0c433d3be..0a9a4cdf8f8 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Enrichment/ApplicationEnricherTags.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Enrichment/ApplicationEnricherTags.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Enrichment/IEnrichmentTagCollector.xml b/xml/Microsoft.Extensions.Diagnostics.Enrichment/IEnrichmentTagCollector.xml
index b54ea94c575..b6aadbbc651 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Enrichment/IEnrichmentTagCollector.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Enrichment/IEnrichmentTagCollector.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Allows enrichers to report enrichment properties.
diff --git a/xml/Microsoft.Extensions.Diagnostics.Enrichment/ILogEnricher.xml b/xml/Microsoft.Extensions.Diagnostics.Enrichment/ILogEnricher.xml
index 5cb5ee8f833..e616427a821 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Enrichment/ILogEnricher.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Enrichment/ILogEnricher.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a component that augments log records with additional properties.
diff --git a/xml/Microsoft.Extensions.Diagnostics.Enrichment/IStaticLogEnricher.xml b/xml/Microsoft.Extensions.Diagnostics.Enrichment/IStaticLogEnricher.xml
index 3a82de04007..b9d9c6e06fc 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Enrichment/IStaticLogEnricher.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Enrichment/IStaticLogEnricher.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Augments log records with additional properties that are unchanging over the life of the object.
diff --git a/xml/Microsoft.Extensions.Diagnostics.Enrichment/ProcessEnricherTagNames.xml b/xml/Microsoft.Extensions.Diagnostics.Enrichment/ProcessEnricherTagNames.xml
index 13265658f97..0459f667d64 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Enrichment/ProcessEnricherTagNames.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Enrichment/ProcessEnricherTagNames.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/ExceptionSummarizationBuilderExtensions.xml b/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/ExceptionSummarizationBuilderExtensions.xml
index d044a87ed3e..77fec71cb84 100644
--- a/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/ExceptionSummarizationBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/ExceptionSummarizationBuilderExtensions.xml
@@ -41,12 +41,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Diagnostics.ExceptionSummarization.IExceptionSummarizationBuilder</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/ExceptionSummary.xml b/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/ExceptionSummary.xml
index 56fa11468ff..b2f986a0169 100644
--- a/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/ExceptionSummary.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/ExceptionSummary.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -181,12 +177,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/IExceptionSummarizationBuilder.xml b/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/IExceptionSummarizationBuilder.xml
index 224755d4509..a88a84e08b2 100644
--- a/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/IExceptionSummarizationBuilder.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/IExceptionSummarizationBuilder.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Abstraction to register new exception summary providers.
diff --git a/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/IExceptionSummarizer.xml b/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/IExceptionSummarizer.xml
index 7cef8878885..0246774e901 100644
--- a/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/IExceptionSummarizer.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/IExceptionSummarizer.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Provides a mechanism to summarize exceptions for use in telemetry.
diff --git a/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/IExceptionSummaryProvider.xml b/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/IExceptionSummaryProvider.xml
index 0d4150880f7..198dc16b015 100644
--- a/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/IExceptionSummaryProvider.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.ExceptionSummarization/IExceptionSummaryProvider.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             The interface implemented by components which know how to summarize exceptions.
diff --git a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckContext.xml b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckContext.xml
index dac00557aa9..35952716e68 100644
--- a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckContext.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckContext.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckRegistration.xml b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckRegistration.xml
index 4d0bfd37e0e..7eec9843ce3 100644
--- a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckRegistration.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckRegistration.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckResult.xml b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckResult.xml
index 262793ca6a1..6ee0609d79a 100644
--- a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckResult.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckResult.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -96,10 +92,6 @@
           <AttributeName Language="C#">[get: System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IReadOnlyDictionary&lt;System.String,System.Object&gt;</ReturnType>
diff --git a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckService.xml b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckService.xml
index a784bf30ce4..eaa3b388e99 100644
--- a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckService.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckService.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckServiceOptions.xml b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckServiceOptions.xml
index c70af4f3acc..b24ea1f8f7f 100644
--- a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckServiceOptions.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthCheckServiceOptions.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthReport.xml b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthReport.xml
index ab9142283f1..58314043aee 100644
--- a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthReport.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthReport.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthReportEntry.xml b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthReportEntry.xml
index a50e4ee7ace..1c407357d65 100644
--- a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthReportEntry.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/HealthReportEntry.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -147,10 +143,6 @@
           <AttributeName Language="C#">[get: System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IReadOnlyDictionary&lt;System.String,System.Object&gt;</ReturnType>
@@ -305,10 +297,6 @@
           <AttributeName Language="C#">[get: System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IEnumerable&lt;System.String&gt;</ReturnType>
diff --git a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/IHealthCheck.xml b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/IHealthCheck.xml
index 0137e34a06b..9793f41bac2 100644
--- a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/IHealthCheck.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/IHealthCheck.xml
@@ -17,12 +17,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a health check, which can be used to check the status of a component in the application, such as a backend service, database or some internal
diff --git a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/IHealthCheckPublisher.xml b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/IHealthCheckPublisher.xml
index f248d715747..d722afbdfa8 100644
--- a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/IHealthCheckPublisher.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/IHealthCheckPublisher.xml
@@ -17,12 +17,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a publisher of <see cref="T:Microsoft.Extensions.Diagnostics.HealthChecks.HealthReport" /> information.
diff --git a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/ResourceUtilizationHealthCheckOptions.xml b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/ResourceUtilizationHealthCheckOptions.xml
index 414ff43e135..ebc28ab1612 100644
--- a/xml/Microsoft.Extensions.Diagnostics.HealthChecks/ResourceUtilizationHealthCheckOptions.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.HealthChecks/ResourceUtilizationHealthCheckOptions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Latency/Checkpoint.xml b/xml/Microsoft.Extensions.Diagnostics.Latency/Checkpoint.xml
index 405682bf436..4609b27e2a2 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Latency/Checkpoint.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Latency/Checkpoint.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -147,12 +143,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Latency/CheckpointToken.xml b/xml/Microsoft.Extensions.Diagnostics.Latency/CheckpointToken.xml
index 81bbb349a32..5f101b53b03 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Latency/CheckpointToken.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Latency/CheckpointToken.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Latency/ILatencyContext.xml b/xml/Microsoft.Extensions.Diagnostics.Latency/ILatencyContext.xml
index 0084fae029f..8bd1eae029e 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Latency/ILatencyContext.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Latency/ILatencyContext.xml
@@ -185,12 +185,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Latency/ILatencyContextProvider.xml b/xml/Microsoft.Extensions.Diagnostics.Latency/ILatencyContextProvider.xml
index 0f44e00354a..ab84e1d15c1 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Latency/ILatencyContextProvider.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Latency/ILatencyContextProvider.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             A factory of latency contexts.
diff --git a/xml/Microsoft.Extensions.Diagnostics.Latency/ILatencyContextTokenIssuer.xml b/xml/Microsoft.Extensions.Diagnostics.Latency/ILatencyContextTokenIssuer.xml
index 259dfe2e0eb..70675512735 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Latency/ILatencyContextTokenIssuer.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Latency/ILatencyContextTokenIssuer.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Issues tokens for various object types.
diff --git a/xml/Microsoft.Extensions.Diagnostics.Latency/ILatencyDataExporter.xml b/xml/Microsoft.Extensions.Diagnostics.Latency/ILatencyDataExporter.xml
index caff9cfe9d1..0703c00992e 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Latency/ILatencyDataExporter.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Latency/ILatencyDataExporter.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Abstraction that is used to export latency data.
diff --git a/xml/Microsoft.Extensions.Diagnostics.Latency/LatencyContextRegistrationOptions.xml b/xml/Microsoft.Extensions.Diagnostics.Latency/LatencyContextRegistrationOptions.xml
index f7c465a6ab1..0af0560685f 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Latency/LatencyContextRegistrationOptions.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Latency/LatencyContextRegistrationOptions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Latency/Measure.xml b/xml/Microsoft.Extensions.Diagnostics.Latency/Measure.xml
index 0588520ff22..2b2f20b3893 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Latency/Measure.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Latency/Measure.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -121,12 +117,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Latency/MeasureToken.xml b/xml/Microsoft.Extensions.Diagnostics.Latency/MeasureToken.xml
index 2147bf1ad33..1b4d8fe090d 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Latency/MeasureToken.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Latency/MeasureToken.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Latency/Tag.xml b/xml/Microsoft.Extensions.Diagnostics.Latency/Tag.xml
index bf167fe9d82..79cc52f6358 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Latency/Tag.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Latency/Tag.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Latency/TagToken.xml b/xml/Microsoft.Extensions.Diagnostics.Latency/TagToken.xml
index 9acbc8b0351..7555a10b454 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Latency/TagToken.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Latency/TagToken.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Metrics.Configuration/IMetricListenerConfigurationFactory.xml b/xml/Microsoft.Extensions.Diagnostics.Metrics.Configuration/IMetricListenerConfigurationFactory.xml
index 77d546be3ae..4ac150c69c5 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Metrics.Configuration/IMetricListenerConfigurationFactory.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Metrics.Configuration/IMetricListenerConfigurationFactory.xml
@@ -11,12 +11,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Used to retrieve the metrics configuration for any listener name.
diff --git a/xml/Microsoft.Extensions.Diagnostics.Metrics.Testing/CollectedMeasurement`1.xml b/xml/Microsoft.Extensions.Diagnostics.Metrics.Testing/CollectedMeasurement`1.xml
index e25441dc798..3159f5ae7e7 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Metrics.Testing/CollectedMeasurement`1.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Metrics.Testing/CollectedMeasurement`1.xml
@@ -109,12 +109,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -199,12 +193,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Metrics.Testing/MetricCollector`1.xml b/xml/Microsoft.Extensions.Diagnostics.Metrics.Testing/MetricCollector`1.xml
index 8611f855077..5d176cd4bb8 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Metrics.Testing/MetricCollector`1.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Metrics.Testing/MetricCollector`1.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of metric data being recorded.</typeparam>
@@ -82,12 +78,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="instrument" Type="System.Diagnostics.Metrics.Instrument&lt;T&gt;">
           <Attributes>
@@ -124,12 +114,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="instrument" Type="System.Diagnostics.Metrics.ObservableInstrument&lt;T&gt;">
           <Attributes>
@@ -352,10 +336,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.Metrics.Instrument</ReturnType>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Metrics/ConsoleMetrics.xml b/xml/Microsoft.Extensions.Diagnostics.Metrics/ConsoleMetrics.xml
index ba52d611371..c614af62d1d 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Metrics/ConsoleMetrics.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Metrics/ConsoleMetrics.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Metrics/CounterAttribute.xml b/xml/Microsoft.Extensions.Diagnostics.Metrics/CounterAttribute.xml
index 863b12a83b1..bb26fcf7c14 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Metrics/CounterAttribute.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Metrics/CounterAttribute.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -70,12 +66,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="tagNames" Type="System.String[]">
           <Attributes>
@@ -107,12 +97,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="type" Type="System.Type" />
       </Parameters>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Metrics/CounterAttribute`1.xml b/xml/Microsoft.Extensions.Diagnostics.Metrics/CounterAttribute`1.xml
index da1b5cab535..fa564ade78c 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Metrics/CounterAttribute`1.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Metrics/CounterAttribute`1.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">
@@ -89,12 +85,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="tagNames" Type="System.String[]">
           <Attributes>
@@ -126,12 +116,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="type" Type="System.Type" />
       </Parameters>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Metrics/GaugeAttribute.xml b/xml/Microsoft.Extensions.Diagnostics.Metrics/GaugeAttribute.xml
index ea473b1b5c5..eaad823dcf5 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Metrics/GaugeAttribute.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Metrics/GaugeAttribute.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -70,12 +66,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="tagNames" Type="System.String[]">
           <Attributes>
@@ -107,12 +97,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="type" Type="System.Type" />
       </Parameters>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Metrics/HistogramAttribute.xml b/xml/Microsoft.Extensions.Diagnostics.Metrics/HistogramAttribute.xml
index 86e2d9a3926..07d1c3363ea 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Metrics/HistogramAttribute.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Metrics/HistogramAttribute.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -70,12 +66,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="tagNames" Type="System.String[]">
           <Attributes>
@@ -107,12 +97,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="type" Type="System.Type" />
       </Parameters>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Metrics/HistogramAttribute`1.xml b/xml/Microsoft.Extensions.Diagnostics.Metrics/HistogramAttribute`1.xml
index 5b1475229ea..e17cf12793e 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Metrics/HistogramAttribute`1.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Metrics/HistogramAttribute`1.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">
@@ -89,12 +85,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="tagNames" Type="System.String[]">
           <Attributes>
@@ -126,12 +116,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="type" Type="System.Type" />
       </Parameters>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Metrics/IMetricsBuilder.xml b/xml/Microsoft.Extensions.Diagnostics.Metrics/IMetricsBuilder.xml
index 585f80bbdf5..31e84745a71 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Metrics/IMetricsBuilder.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Metrics/IMetricsBuilder.xml
@@ -11,12 +11,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a type used to configure the metrics system by registering IMetricsListeners and using rules
diff --git a/xml/Microsoft.Extensions.Diagnostics.Metrics/IMetricsListener.xml b/xml/Microsoft.Extensions.Diagnostics.Metrics/IMetricsListener.xml
index 505a120613e..5f4d55d6a34 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Metrics/IMetricsListener.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Metrics/IMetricsListener.xml
@@ -11,12 +11,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a type used to listen to metrics emitted from the system.
diff --git a/xml/Microsoft.Extensions.Diagnostics.Metrics/InstrumentRule.xml b/xml/Microsoft.Extensions.Diagnostics.Metrics/InstrumentRule.xml
index b1ed193f7eb..714c6832aea 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Metrics/InstrumentRule.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Metrics/InstrumentRule.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <param name="meterName">The <see cref="P:System.Diagnostics.Metrics.Meter.Name">Meter.Name</see> or prefix.</param>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Metrics/MeasurementHandlers.xml b/xml/Microsoft.Extensions.Diagnostics.Metrics/MeasurementHandlers.xml
index 9bf50c04609..565010c585c 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Metrics/MeasurementHandlers.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Metrics/MeasurementHandlers.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Metrics/MetricsBuilderConfigurationExtensions.xml b/xml/Microsoft.Extensions.Diagnostics.Metrics/MetricsBuilderConfigurationExtensions.xml
index 43ff640c4f0..f4ee7b26ff4 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Metrics/MetricsBuilderConfigurationExtensions.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Metrics/MetricsBuilderConfigurationExtensions.xml
@@ -34,12 +34,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Diagnostics.Metrics.IMetricsBuilder</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Metrics/MetricsBuilderConsoleExtensions.xml b/xml/Microsoft.Extensions.Diagnostics.Metrics/MetricsBuilderConsoleExtensions.xml
index c29a46731a0..84abfbdc1f1 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Metrics/MetricsBuilderConsoleExtensions.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Metrics/MetricsBuilderConsoleExtensions.xml
@@ -34,12 +34,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Diagnostics.Metrics.IMetricsBuilder</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Metrics/MetricsBuilderExtensions.xml b/xml/Microsoft.Extensions.Diagnostics.Metrics/MetricsBuilderExtensions.xml
index 1bcceab698d..fbd6b151ac9 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Metrics/MetricsBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Metrics/MetricsBuilderExtensions.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -52,8 +48,8 @@
         <Parameter Name="listener" Type="Microsoft.Extensions.Diagnostics.Metrics.IMetricsListener" />
       </Parameters>
       <Docs>
-        <param name="listener">The implementation type of the listener.</param>
         <param name="builder">The <see cref="T:Microsoft.Extensions.Diagnostics.Metrics.IMetricsBuilder" />.</param>
+        <param name="listener">The implementation type of the listener.</param>
         <summary>
             Registers a new <see cref="T:Microsoft.Extensions.Diagnostics.Metrics.IMetricsListener" /> instance.
             </summary>
@@ -218,12 +214,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Diagnostics.Metrics.IMetricsBuilder</ReturnType>
       </ReturnValue>
@@ -266,12 +256,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Diagnostics.Metrics.MetricsOptions</ReturnType>
       </ReturnValue>
@@ -388,12 +372,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Diagnostics.Metrics.IMetricsBuilder</ReturnType>
       </ReturnValue>
@@ -436,12 +414,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Diagnostics.Metrics.MetricsOptions</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Metrics/MetricsOptions.xml b/xml/Microsoft.Extensions.Diagnostics.Metrics/MetricsOptions.xml
index 1ed3c175456..11399e37eb6 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Metrics/MetricsOptions.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Metrics/MetricsOptions.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Metrics/TagNameAttribute.xml b/xml/Microsoft.Extensions.Diagnostics.Metrics/TagNameAttribute.xml
index 2075362925b..ddd36b239c5 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Metrics/TagNameAttribute.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Metrics/TagNameAttribute.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Probes/KubernetesProbesOptions.xml b/xml/Microsoft.Extensions.Diagnostics.Probes/KubernetesProbesOptions.xml
index 960c48b0d34..85fb0dddb00 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Probes/KubernetesProbesOptions.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Probes/KubernetesProbesOptions.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.Probes/ProbeTags.xml b/xml/Microsoft.Extensions.Diagnostics.Probes/ProbeTags.xml
index 545bad5c42a..fab2a544acc 100644
--- a/xml/Microsoft.Extensions.Diagnostics.Probes/ProbeTags.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.Probes/ProbeTags.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.ResourceMonitoring/IResourceMonitorBuilder.xml b/xml/Microsoft.Extensions.Diagnostics.ResourceMonitoring/IResourceMonitorBuilder.xml
index 8c627da4a41..cf0c17159d1 100644
--- a/xml/Microsoft.Extensions.Diagnostics.ResourceMonitoring/IResourceMonitorBuilder.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.ResourceMonitoring/IResourceMonitorBuilder.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Helps building the resource monitoring infrastructure.
diff --git a/xml/Microsoft.Extensions.Diagnostics.ResourceMonitoring/ResourceMonitoringBuilderExtensions.xml b/xml/Microsoft.Extensions.Diagnostics.ResourceMonitoring/ResourceMonitoringBuilderExtensions.xml
index 6be02fabb8e..f4c62d60b20 100644
--- a/xml/Microsoft.Extensions.Diagnostics.ResourceMonitoring/ResourceMonitoringBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.ResourceMonitoring/ResourceMonitoringBuilderExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Diagnostics.ResourceMonitoring/ResourceMonitoringOptions.xml b/xml/Microsoft.Extensions.Diagnostics.ResourceMonitoring/ResourceMonitoringOptions.xml
index eda6055947f..e2b81ccc22c 100644
--- a/xml/Microsoft.Extensions.Diagnostics.ResourceMonitoring/ResourceMonitoringOptions.xml
+++ b/xml/Microsoft.Extensions.Diagnostics.ResourceMonitoring/ResourceMonitoringOptions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.FileProviders.Composite/CompositeDirectoryContents.xml b/xml/Microsoft.Extensions.FileProviders.Composite/CompositeDirectoryContents.xml
index 9b1a98a0c1e..94bb1dbe539 100644
--- a/xml/Microsoft.Extensions.FileProviders.Composite/CompositeDirectoryContents.xml
+++ b/xml/Microsoft.Extensions.FileProviders.Composite/CompositeDirectoryContents.xml
@@ -55,12 +55,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="fileProviders" Type="System.Collections.Generic.IList&lt;Microsoft.Extensions.FileProviders.IFileProvider&gt;" />
         <Parameter Name="subpath" Type="System.String" />
@@ -118,12 +112,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IEnumerator&lt;Microsoft.Extensions.FileProviders.IFileInfo&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.FileProviders.Embedded/EmbeddedResourceFileInfo.xml b/xml/Microsoft.Extensions.FileProviders.Embedded/EmbeddedResourceFileInfo.xml
index ce77af7ef4a..536d58af1d7 100644
--- a/xml/Microsoft.Extensions.FileProviders.Embedded/EmbeddedResourceFileInfo.xml
+++ b/xml/Microsoft.Extensions.FileProviders.Embedded/EmbeddedResourceFileInfo.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -266,10 +262,6 @@ The caller should dispose the stream when done with it.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.FileProviders.Internal/PhysicalDirectoryContents.xml b/xml/Microsoft.Extensions.FileProviders.Internal/PhysicalDirectoryContents.xml
index bc725482c64..753b79e619b 100644
--- a/xml/Microsoft.Extensions.FileProviders.Internal/PhysicalDirectoryContents.xml
+++ b/xml/Microsoft.Extensions.FileProviders.Internal/PhysicalDirectoryContents.xml
@@ -61,12 +61,6 @@ This API supports the .NET infrastructure and is not intended to be used directl
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="directory" Type="System.String" />
       </Parameters>
@@ -98,12 +92,6 @@ This API supports the .NET infrastructure and is not intended to be used directl
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="directory" Type="System.String" />
         <Parameter Name="filters" Type="Microsoft.Extensions.FileProviders.Physical.ExclusionFilters" />
@@ -175,12 +163,6 @@ This API supports the .NET infrastructure and is not intended to be used directl
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IEnumerator&lt;Microsoft.Extensions.FileProviders.IFileInfo&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.FileProviders.Physical/PhysicalDirectoryInfo.xml b/xml/Microsoft.Extensions.FileProviders.Physical/PhysicalDirectoryInfo.xml
index 33c5e0f47a4..f41157e9432 100644
--- a/xml/Microsoft.Extensions.FileProviders.Physical/PhysicalDirectoryInfo.xml
+++ b/xml/Microsoft.Extensions.FileProviders.Physical/PhysicalDirectoryInfo.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.FileProviders.Physical/PhysicalFileInfo.xml b/xml/Microsoft.Extensions.FileProviders.Physical/PhysicalFileInfo.xml
index 6d3182bb382..4087a5a8353 100644
--- a/xml/Microsoft.Extensions.FileProviders.Physical/PhysicalFileInfo.xml
+++ b/xml/Microsoft.Extensions.FileProviders.Physical/PhysicalFileInfo.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.FileProviders.Physical/PhysicalFilesWatcher.xml b/xml/Microsoft.Extensions.FileProviders.Physical/PhysicalFilesWatcher.xml
index ec5ff2c2dd7..6e6dc4b2da8 100644
--- a/xml/Microsoft.Extensions.FileProviders.Physical/PhysicalFilesWatcher.xml
+++ b/xml/Microsoft.Extensions.FileProviders.Physical/PhysicalFilesWatcher.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.FileProviders.Physical/PollingFileChangeToken.xml b/xml/Microsoft.Extensions.FileProviders.Physical/PollingFileChangeToken.xml
index 5646f95f800..2f3b070437c 100644
--- a/xml/Microsoft.Extensions.FileProviders.Physical/PollingFileChangeToken.xml
+++ b/xml/Microsoft.Extensions.FileProviders.Physical/PollingFileChangeToken.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -67,12 +63,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="fileInfo" Type="System.IO.FileInfo" />
       </Parameters>
@@ -157,12 +147,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IDisposable</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.FileProviders.Physical/PollingWildCardChangeToken.xml b/xml/Microsoft.Extensions.FileProviders.Physical/PollingWildCardChangeToken.xml
index 4ff2b3494ba..1cae07ff6ca 100644
--- a/xml/Microsoft.Extensions.FileProviders.Physical/PollingWildCardChangeToken.xml
+++ b/xml/Microsoft.Extensions.FileProviders.Physical/PollingWildCardChangeToken.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.FileProviders/CompositeFileProvider.xml b/xml/Microsoft.Extensions.FileProviders/CompositeFileProvider.xml
index dab3eb5ea14..de4765d4afd 100644
--- a/xml/Microsoft.Extensions.FileProviders/CompositeFileProvider.xml
+++ b/xml/Microsoft.Extensions.FileProviders/CompositeFileProvider.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.FileProviders/EmbeddedFileProvider.xml b/xml/Microsoft.Extensions.FileProviders/EmbeddedFileProvider.xml
index 565aedb3b75..4dc3cc84f84 100644
--- a/xml/Microsoft.Extensions.FileProviders/EmbeddedFileProvider.xml
+++ b/xml/Microsoft.Extensions.FileProviders/EmbeddedFileProvider.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.FileProviders/IFileInfo.xml b/xml/Microsoft.Extensions.FileProviders/IFileInfo.xml
index cfb793aaa56..1acb807773a 100644
--- a/xml/Microsoft.Extensions.FileProviders/IFileInfo.xml
+++ b/xml/Microsoft.Extensions.FileProviders/IFileInfo.xml
@@ -21,12 +21,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a file in the given file provider.
@@ -197,10 +191,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.FileProviders/IFileProvider.xml b/xml/Microsoft.Extensions.FileProviders/IFileProvider.xml
index d3f18c94248..cdd727638d3 100644
--- a/xml/Microsoft.Extensions.FileProviders/IFileProvider.xml
+++ b/xml/Microsoft.Extensions.FileProviders/IFileProvider.xml
@@ -21,12 +21,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             A read-only file provider abstraction.
diff --git a/xml/Microsoft.Extensions.FileProviders/ManifestEmbeddedFileProvider.xml b/xml/Microsoft.Extensions.FileProviders/ManifestEmbeddedFileProvider.xml
index 59ce38bf456..80302bba3ed 100644
--- a/xml/Microsoft.Extensions.FileProviders/ManifestEmbeddedFileProvider.xml
+++ b/xml/Microsoft.Extensions.FileProviders/ManifestEmbeddedFileProvider.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.FileProviders/NotFoundDirectoryContents.xml b/xml/Microsoft.Extensions.FileProviders/NotFoundDirectoryContents.xml
index 20f23513533..dcc3b1aaaa2 100644
--- a/xml/Microsoft.Extensions.FileProviders/NotFoundDirectoryContents.xml
+++ b/xml/Microsoft.Extensions.FileProviders/NotFoundDirectoryContents.xml
@@ -102,12 +102,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IEnumerator&lt;Microsoft.Extensions.FileProviders.IFileInfo&gt;</ReturnType>
       </ReturnValue>
@@ -136,10 +130,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.FileProviders.NotFoundDirectoryContents</ReturnType>
diff --git a/xml/Microsoft.Extensions.FileProviders/NotFoundFileInfo.xml b/xml/Microsoft.Extensions.FileProviders/NotFoundFileInfo.xml
index 3bd712bc8c1..5e306e0ac51 100644
--- a/xml/Microsoft.Extensions.FileProviders/NotFoundFileInfo.xml
+++ b/xml/Microsoft.Extensions.FileProviders/NotFoundFileInfo.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -259,10 +255,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.FileProviders/NullChangeToken.xml b/xml/Microsoft.Extensions.FileProviders/NullChangeToken.xml
index b5cca72b33f..dd44bad5e36 100644
--- a/xml/Microsoft.Extensions.FileProviders/NullChangeToken.xml
+++ b/xml/Microsoft.Extensions.FileProviders/NullChangeToken.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.FileProviders/NullFileProvider.xml b/xml/Microsoft.Extensions.FileProviders/NullFileProvider.xml
index e89a0540236..2daee6b811a 100644
--- a/xml/Microsoft.Extensions.FileProviders/NullFileProvider.xml
+++ b/xml/Microsoft.Extensions.FileProviders/NullFileProvider.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.FileProviders/PhysicalFileProvider.xml b/xml/Microsoft.Extensions.FileProviders/PhysicalFileProvider.xml
index eb4b8d99267..930e7297588 100644
--- a/xml/Microsoft.Extensions.FileProviders/PhysicalFileProvider.xml
+++ b/xml/Microsoft.Extensions.FileProviders/PhysicalFileProvider.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -303,8 +299,7 @@
             By default, <see cref="T:Microsoft.Extensions.FileProviders.PhysicalFileProvider" />  uses <see cref="T:System.IO.FileSystemWatcher" /> to listen to file change events
             for <see cref="M:Microsoft.Extensions.FileProviders.PhysicalFileProvider.Watch(System.String)" />. <see cref="T:System.IO.FileSystemWatcher" /> is ineffective in some scenarios such as mounted drives.
             Polling is required to effectively watch for file changes.
-            </para>
-            </summary>
+            </para></summary>
         <value>
             The default value of this property is determined by the value of environment variable named <c>DOTNET_USE_POLLING_FILE_WATCHER</c>.
             When <c>true</c> or <c>1</c>, this property defaults to <c>true</c>; otherwise false.
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Abstractions/DirectoryInfoBase.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Abstractions/DirectoryInfoBase.xml
index 5bff767f784..e1ac0c012ac 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Abstractions/DirectoryInfoBase.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Abstractions/DirectoryInfoBase.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a directory.</summary>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Abstractions/DirectoryInfoWrapper.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Abstractions/DirectoryInfoWrapper.xml
index 15513839b2e..896a014b047 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Abstractions/DirectoryInfoWrapper.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Abstractions/DirectoryInfoWrapper.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Wraps an instance of <see cref="T:System.IO.DirectoryInfo" /> and provides implementation of
@@ -208,10 +204,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.FileSystemGlobbing.Abstractions.DirectoryInfoBase</ReturnType>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Abstractions/FileInfoWrapper.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Abstractions/FileInfoWrapper.xml
index 8d57c18527e..27900ca96a9 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Abstractions/FileInfoWrapper.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Abstractions/FileInfoWrapper.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Wraps an instance of <see cref="T:System.IO.FileInfo" /> to provide implementation of <see cref="T:Microsoft.Extensions.FileSystemGlobbing.Abstractions.FileInfoBase" />.</summary>
@@ -123,10 +119,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.FileSystemGlobbing.Abstractions.DirectoryInfoBase</ReturnType>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Abstractions/FileSystemInfoBase.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Abstractions/FileSystemInfoBase.xml
index c4eb68fa145..06a84b7e119 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Abstractions/FileSystemInfoBase.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Abstractions/FileSystemInfoBase.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Shared abstraction for files and directories.</summary>
@@ -119,10 +115,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.FileSystemGlobbing.Abstractions.DirectoryInfoBase</ReturnType>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/CurrentPathSegment.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/CurrentPathSegment.xml
index 16092443cde..f4ba16c5fb5 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/CurrentPathSegment.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/CurrentPathSegment.xml
@@ -92,12 +92,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/LiteralPathSegment.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/LiteralPathSegment.xml
index 1d92cd7fcf3..845c1543aad 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/LiteralPathSegment.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/LiteralPathSegment.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This API supports infrastructure and is not intended to be used directly from your code. This API may change or be removed in future releases.</summary>
@@ -105,12 +101,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/ParentPathSegment.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/ParentPathSegment.xml
index 83ccb29f84f..ffffcc9c548 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/ParentPathSegment.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/ParentPathSegment.xml
@@ -92,12 +92,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/RecursiveWildcardSegment.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/RecursiveWildcardSegment.xml
index 88bb817258e..78c15cd394d 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/RecursiveWildcardSegment.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/RecursiveWildcardSegment.xml
@@ -92,12 +92,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/WildcardPathSegment.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/WildcardPathSegment.xml
index 2b19575256b..3f795e72bdd 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/WildcardPathSegment.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PathSegments/WildcardPathSegment.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This API supports infrastructure and is not intended to be used directly from your code. This API may change or be removed in future releases.</summary>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextLinear+FrameData.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextLinear+FrameData.xml
index 7ebf5320766..d4ed7fb50a4 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextLinear+FrameData.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextLinear+FrameData.xml
@@ -116,10 +116,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextLinear.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextLinear.xml
index 41f14344e6d..20b82531f2d 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextLinear.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextLinear.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This API supports infrastructure and is not intended to be used directly from your code. This API may change or be removed in future releases.</summary>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextLinearExclude.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextLinearExclude.xml
index cf161e8c656..06baa6083f8 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextLinearExclude.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextLinearExclude.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This API supports infrastructure and is not intended to be used directly from your code. This API may change or be removed in future releases.</summary>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextLinearInclude.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextLinearInclude.xml
index d09f40abb00..7c6dc6f7b09 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextLinearInclude.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextLinearInclude.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This API supports infrastructure and is not intended to be used directly from your code. This API may change or be removed in future releases.</summary>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextRagged+FrameData.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextRagged+FrameData.xml
index f388937c41c..a4f8a0e94c3 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextRagged+FrameData.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextRagged+FrameData.xml
@@ -179,10 +179,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextRagged.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextRagged.xml
index f32969584de..525abd16477 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextRagged.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextRagged.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This API supports infrastructure and is not intended to be used directly from your code. This API may change or be removed in future releases.</summary>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextRaggedExclude.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextRaggedExclude.xml
index 2c8a5c9f561..d5bcf3dfa69 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextRaggedExclude.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextRaggedExclude.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This API supports infrastructure and is not intended to be used directly from your code. This API may change or be removed in future releases.</summary>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextRaggedInclude.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextRaggedInclude.xml
index d22c6792172..79aac941035 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextRaggedInclude.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContextRaggedInclude.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This API supports infrastructure and is not intended to be used directly from your code. This API may change or be removed in future releases.</summary>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContext`1.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContext`1.xml
index bfcdaa479ce..3a6585723f6 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContext`1.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.PatternContexts/PatternContext`1.xml
@@ -77,12 +77,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -205,12 +199,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -239,12 +227,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -274,12 +256,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.FileSystemGlobbing.Internal.PatternTestResult</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.Patterns/PatternBuilder.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.Patterns/PatternBuilder.xml
index d429536d278..f51aaf7447e 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.Patterns/PatternBuilder.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal.Patterns/PatternBuilder.xml
@@ -82,12 +82,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.FileSystemGlobbing.Internal.IPattern</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/ILinearPattern.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/ILinearPattern.xml
index 191d73074af..7b181b40dd6 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/ILinearPattern.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/ILinearPattern.xml
@@ -25,12 +25,6 @@
       <InterfaceName>Microsoft.Extensions.FileSystemGlobbing.Internal.IPattern</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>This API supports infrastructure and is not intended to be used directly from your code. This API may change or be removed in future releases.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/IPathSegment.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/IPathSegment.xml
index 2617afb529d..33bda2cd09b 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/IPathSegment.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/IPathSegment.xml
@@ -21,12 +21,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>This API supports infrastructure and is not intended to be used directly from your code. This API may change or be removed in future releases.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/IPattern.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/IPattern.xml
index f9834ad5089..3d9bf4f3ebb 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/IPattern.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/IPattern.xml
@@ -21,12 +21,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>This API supports infrastructure and is not intended to be used directly from your code. This API may change or be removed in future releases.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/IPatternContext.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/IPatternContext.xml
index 8fc05602943..50804cbb8d0 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/IPatternContext.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/IPatternContext.xml
@@ -21,12 +21,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>This API supports infrastructure and is not intended to be used directly from your code. This API may change or be removed in future releases.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/IRaggedPattern.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/IRaggedPattern.xml
index 3437507630b..dc4d84fa964 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/IRaggedPattern.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/IRaggedPattern.xml
@@ -25,12 +25,6 @@
       <InterfaceName>Microsoft.Extensions.FileSystemGlobbing.Internal.IPattern</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>This API supports infrastructure and is not intended to be used directly from your code. This API may change or be removed in future releases.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/MatcherContext.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/MatcherContext.xml
index 92326a6fb97..4772f2309f4 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/MatcherContext.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/MatcherContext.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This API supports infrastructure and is not intended to be used directly from your code. This API may change or be removed in future releases.</summary>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/PatternTestResult.xml b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/PatternTestResult.xml
index a1fbe61bca8..550a84cb163 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/PatternTestResult.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing.Internal/PatternTestResult.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This API supports infrastructure and is not intended to be used directly from your code. This API may change or be removed in future releases.</summary>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing/FilePatternMatch.xml b/xml/Microsoft.Extensions.FileSystemGlobbing/FilePatternMatch.xml
index 41072f565c8..ee48e9d9f95 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing/FilePatternMatch.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing/FilePatternMatch.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a file that was matched by searching using a globbing pattern.</summary>
@@ -117,12 +113,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -218,10 +208,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing/InMemoryDirectoryInfo.xml b/xml/Microsoft.Extensions.FileSystemGlobbing/InMemoryDirectoryInfo.xml
index 5b3a2c1cae8..8c03273c6e8 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing/InMemoryDirectoryInfo.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing/InMemoryDirectoryInfo.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Avoids using disk for uses like Pattern Matching.</summary>
@@ -216,10 +212,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.FileSystemGlobbing.Abstractions.DirectoryInfoBase</ReturnType>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing/Matcher.xml b/xml/Microsoft.Extensions.FileSystemGlobbing/Matcher.xml
index 4f4caf23042..5d80b20f209 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing/Matcher.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing/Matcher.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Searches the file system for files with names that match specified patterns.</summary>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing/MatcherExtensions.xml b/xml/Microsoft.Extensions.FileSystemGlobbing/MatcherExtensions.xml
index 42377bc72c3..cc2af384abe 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing/MatcherExtensions.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing/MatcherExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/Microsoft.Extensions.FileSystemGlobbing/PatternMatchingResult.xml b/xml/Microsoft.Extensions.FileSystemGlobbing/PatternMatchingResult.xml
index 78661ee547e..21777ad80cf 100644
--- a/xml/Microsoft.Extensions.FileSystemGlobbing/PatternMatchingResult.xml
+++ b/xml/Microsoft.Extensions.FileSystemGlobbing/PatternMatchingResult.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:Microsoft.Extensions.FileSystemGlobbing.FilePatternMatch" />.</summary>
diff --git a/xml/Microsoft.Extensions.Hosting.Internal/ApplicationLifetime.xml b/xml/Microsoft.Extensions.Hosting.Internal/ApplicationLifetime.xml
index ad0d4406db5..b0a5eccc3fc 100644
--- a/xml/Microsoft.Extensions.Hosting.Internal/ApplicationLifetime.xml
+++ b/xml/Microsoft.Extensions.Hosting.Internal/ApplicationLifetime.xml
@@ -62,12 +62,6 @@ This API supports the .NET infrastructure and is not intended to be used directl
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="logger" Type="Microsoft.Extensions.Logging.ILogger&lt;Microsoft.Extensions.Hosting.Internal.ApplicationLifetime&gt;" />
       </Parameters>
diff --git a/xml/Microsoft.Extensions.Hosting.Internal/ConsoleLifetime.xml b/xml/Microsoft.Extensions.Hosting.Internal/ConsoleLifetime.xml
index f222973b215..3cdb16d4607 100644
--- a/xml/Microsoft.Extensions.Hosting.Internal/ConsoleLifetime.xml
+++ b/xml/Microsoft.Extensions.Hosting.Internal/ConsoleLifetime.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting.Internal/HostingEnvironment.xml b/xml/Microsoft.Extensions.Hosting.Internal/HostingEnvironment.xml
index 4073320db8f..23756cc9a02 100644
--- a/xml/Microsoft.Extensions.Hosting.Internal/HostingEnvironment.xml
+++ b/xml/Microsoft.Extensions.Hosting.Internal/HostingEnvironment.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting.Systemd/ServiceState.xml b/xml/Microsoft.Extensions.Hosting.Systemd/ServiceState.xml
index b8f4905f8c2..7fe7c247589 100644
--- a/xml/Microsoft.Extensions.Hosting.Systemd/ServiceState.xml
+++ b/xml/Microsoft.Extensions.Hosting.Systemd/ServiceState.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting.Systemd/SystemdLifetime.xml b/xml/Microsoft.Extensions.Hosting.Systemd/SystemdLifetime.xml
index 5c69b3cd5fd..9d3dff4a499 100644
--- a/xml/Microsoft.Extensions.Hosting.Systemd/SystemdLifetime.xml
+++ b/xml/Microsoft.Extensions.Hosting.Systemd/SystemdLifetime.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting.Testing/FakeHost.xml b/xml/Microsoft.Extensions.Hosting.Testing/FakeHost.xml
index 3bc7a328e8f..fd1c40de0de 100644
--- a/xml/Microsoft.Extensions.Hosting.Testing/FakeHost.xml
+++ b/xml/Microsoft.Extensions.Hosting.Testing/FakeHost.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting.WindowsServices/WindowsServiceLifetime.xml b/xml/Microsoft.Extensions.Hosting.WindowsServices/WindowsServiceLifetime.xml
index 8d5c41aa5a2..287d73384f4 100644
--- a/xml/Microsoft.Extensions.Hosting.WindowsServices/WindowsServiceLifetime.xml
+++ b/xml/Microsoft.Extensions.Hosting.WindowsServices/WindowsServiceLifetime.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting/ApplicationMetadataHostBuilderExtensions.xml b/xml/Microsoft.Extensions.Hosting/ApplicationMetadataHostBuilderExtensions.xml
index e0983e77804..352575c077e 100644
--- a/xml/Microsoft.Extensions.Hosting/ApplicationMetadataHostBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Hosting/ApplicationMetadataHostBuilderExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting/BackgroundService.xml b/xml/Microsoft.Extensions.Hosting/BackgroundService.xml
index 2c265d29630..27e8aa9ffc7 100644
--- a/xml/Microsoft.Extensions.Hosting/BackgroundService.xml
+++ b/xml/Microsoft.Extensions.Hosting/BackgroundService.xml
@@ -92,12 +92,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -133,10 +127,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
@@ -167,12 +157,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -205,12 +189,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Hosting/EnvironmentName.xml b/xml/Microsoft.Extensions.Hosting/EnvironmentName.xml
index 6522419117b..f1eb9e1efab 100644
--- a/xml/Microsoft.Extensions.Hosting/EnvironmentName.xml
+++ b/xml/Microsoft.Extensions.Hosting/EnvironmentName.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting/Environments.xml b/xml/Microsoft.Extensions.Hosting/Environments.xml
index 312cddff5c9..d56c6cc50d8 100644
--- a/xml/Microsoft.Extensions.Hosting/Environments.xml
+++ b/xml/Microsoft.Extensions.Hosting/Environments.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting/FakeHostingExtensions.xml b/xml/Microsoft.Extensions.Hosting/FakeHostingExtensions.xml
index 9560c24c7d3..747ff33392d 100644
--- a/xml/Microsoft.Extensions.Hosting/FakeHostingExtensions.xml
+++ b/xml/Microsoft.Extensions.Hosting/FakeHostingExtensions.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting/Host.xml b/xml/Microsoft.Extensions.Hosting/Host.xml
index 6c154bed8b0..5544e2a1bce 100644
--- a/xml/Microsoft.Extensions.Hosting/Host.xml
+++ b/xml/Microsoft.Extensions.Hosting/Host.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting/HostAbortedException.xml b/xml/Microsoft.Extensions.Hosting/HostAbortedException.xml
index 0cf2fd77649..926bfa60dc9 100644
--- a/xml/Microsoft.Extensions.Hosting/HostAbortedException.xml
+++ b/xml/Microsoft.Extensions.Hosting/HostAbortedException.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting/HostApplicationBuilder.xml b/xml/Microsoft.Extensions.Hosting/HostApplicationBuilder.xml
index f85ff30f799..fae0c649bf9 100644
--- a/xml/Microsoft.Extensions.Hosting/HostApplicationBuilder.xml
+++ b/xml/Microsoft.Extensions.Hosting/HostApplicationBuilder.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -71,12 +67,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="settings" Type="Microsoft.Extensions.Hosting.HostApplicationBuilderSettings" />
       </Parameters>
diff --git a/xml/Microsoft.Extensions.Hosting/HostApplicationBuilderSettings.xml b/xml/Microsoft.Extensions.Hosting/HostApplicationBuilderSettings.xml
index cafebef2058..b60313e5e4d 100644
--- a/xml/Microsoft.Extensions.Hosting/HostApplicationBuilderSettings.xml
+++ b/xml/Microsoft.Extensions.Hosting/HostApplicationBuilderSettings.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting/HostBuilder.xml b/xml/Microsoft.Extensions.Hosting/HostBuilder.xml
index 937aea0ea1c..dda2be603e3 100644
--- a/xml/Microsoft.Extensions.Hosting/HostBuilder.xml
+++ b/xml/Microsoft.Extensions.Hosting/HostBuilder.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting/HostBuilderContext.xml b/xml/Microsoft.Extensions.Hosting/HostBuilderContext.xml
index 72e8e1142ff..355e5b8579c 100644
--- a/xml/Microsoft.Extensions.Hosting/HostBuilderContext.xml
+++ b/xml/Microsoft.Extensions.Hosting/HostBuilderContext.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting/HostDefaults.xml b/xml/Microsoft.Extensions.Hosting/HostDefaults.xml
index 93583d107c0..678aec3eaae 100644
--- a/xml/Microsoft.Extensions.Hosting/HostDefaults.xml
+++ b/xml/Microsoft.Extensions.Hosting/HostDefaults.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting/HostEnvironmentEnvExtensions.xml b/xml/Microsoft.Extensions.Hosting/HostEnvironmentEnvExtensions.xml
index 4dae9f1df46..65e02c7f2b3 100644
--- a/xml/Microsoft.Extensions.Hosting/HostEnvironmentEnvExtensions.xml
+++ b/xml/Microsoft.Extensions.Hosting/HostEnvironmentEnvExtensions.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting/HostingAbstractionsHostBuilderExtensions.xml b/xml/Microsoft.Extensions.Hosting/HostingAbstractionsHostBuilderExtensions.xml
index 8b5db629754..06c7699e311 100644
--- a/xml/Microsoft.Extensions.Hosting/HostingAbstractionsHostBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Hosting/HostingAbstractionsHostBuilderExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting/HostingAbstractionsHostExtensions.xml b/xml/Microsoft.Extensions.Hosting/HostingAbstractionsHostExtensions.xml
index ebdfaf2ece1..fbb9524c091 100644
--- a/xml/Microsoft.Extensions.Hosting/HostingAbstractionsHostExtensions.xml
+++ b/xml/Microsoft.Extensions.Hosting/HostingAbstractionsHostExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting/HostingEnvironmentExtensions.xml b/xml/Microsoft.Extensions.Hosting/HostingEnvironmentExtensions.xml
index 5b4cda1dd6e..a584d53ca48 100644
--- a/xml/Microsoft.Extensions.Hosting/HostingEnvironmentExtensions.xml
+++ b/xml/Microsoft.Extensions.Hosting/HostingEnvironmentExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting/HostingHostBuilderExtensions.xml b/xml/Microsoft.Extensions.Hosting/HostingHostBuilderExtensions.xml
index 64e4d43756e..c3e477d4207 100644
--- a/xml/Microsoft.Extensions.Hosting/HostingHostBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Hosting/HostingHostBuilderExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting/IHost.xml b/xml/Microsoft.Extensions.Hosting/IHost.xml
index 789f21ab61a..0fd807e4865 100644
--- a/xml/Microsoft.Extensions.Hosting/IHost.xml
+++ b/xml/Microsoft.Extensions.Hosting/IHost.xml
@@ -22,12 +22,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             A program abstraction.
diff --git a/xml/Microsoft.Extensions.Hosting/IHostApplicationBuilder.xml b/xml/Microsoft.Extensions.Hosting/IHostApplicationBuilder.xml
index e2583f37b9a..7fa5775d123 100644
--- a/xml/Microsoft.Extensions.Hosting/IHostApplicationBuilder.xml
+++ b/xml/Microsoft.Extensions.Hosting/IHostApplicationBuilder.xml
@@ -11,12 +11,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a hosted applications and services builder which helps manage configuration, logging, lifetime, and more.
diff --git a/xml/Microsoft.Extensions.Hosting/IHostBuilder.xml b/xml/Microsoft.Extensions.Hosting/IHostBuilder.xml
index 4c0cdb63dad..994701ed8f7 100644
--- a/xml/Microsoft.Extensions.Hosting/IHostBuilder.xml
+++ b/xml/Microsoft.Extensions.Hosting/IHostBuilder.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             A program initialization abstraction.
diff --git a/xml/Microsoft.Extensions.Hosting/IHostEnvironment.xml b/xml/Microsoft.Extensions.Hosting/IHostEnvironment.xml
index 9f96f58e8f3..49f295e3baf 100644
--- a/xml/Microsoft.Extensions.Hosting/IHostEnvironment.xml
+++ b/xml/Microsoft.Extensions.Hosting/IHostEnvironment.xml
@@ -16,12 +16,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Provides information about the hosting environment an application is running in.
diff --git a/xml/Microsoft.Extensions.Hosting/IHostLifetime.xml b/xml/Microsoft.Extensions.Hosting/IHostLifetime.xml
index f110a3d7d53..70740598ae8 100644
--- a/xml/Microsoft.Extensions.Hosting/IHostLifetime.xml
+++ b/xml/Microsoft.Extensions.Hosting/IHostLifetime.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Tracks host lifetime.
diff --git a/xml/Microsoft.Extensions.Hosting/IHostedLifecycleService.xml b/xml/Microsoft.Extensions.Hosting/IHostedLifecycleService.xml
index d56bb201e5e..79845ea0e31 100644
--- a/xml/Microsoft.Extensions.Hosting/IHostedLifecycleService.xml
+++ b/xml/Microsoft.Extensions.Hosting/IHostedLifecycleService.xml
@@ -15,12 +15,6 @@
       <InterfaceName>Microsoft.Extensions.Hosting.IHostedService</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Defines methods that are run before or after
diff --git a/xml/Microsoft.Extensions.Hosting/IHostedService.xml b/xml/Microsoft.Extensions.Hosting/IHostedService.xml
index cd54db393b5..f5cf6982488 100644
--- a/xml/Microsoft.Extensions.Hosting/IHostedService.xml
+++ b/xml/Microsoft.Extensions.Hosting/IHostedService.xml
@@ -19,12 +19,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Defines methods for objects that are managed by the host.
diff --git a/xml/Microsoft.Extensions.Hosting/IHostingEnvironment.xml b/xml/Microsoft.Extensions.Hosting/IHostingEnvironment.xml
index e9a7b267f33..1bed712067c 100644
--- a/xml/Microsoft.Extensions.Hosting/IHostingEnvironment.xml
+++ b/xml/Microsoft.Extensions.Hosting/IHostingEnvironment.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Obsolete("IHostingEnvironment has been deprecated. Use Microsoft.Extensions.Hosting.IHostEnvironment instead.")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("IHostingEnvironment has been deprecated. Use Microsoft.Extensions.Hosting.IHostEnvironment instead.")&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting/SystemdHostBuilderExtensions.xml b/xml/Microsoft.Extensions.Hosting/SystemdHostBuilderExtensions.xml
index 30e8b7b0112..2a569f0e11b 100644
--- a/xml/Microsoft.Extensions.Hosting/SystemdHostBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Hosting/SystemdHostBuilderExtensions.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting/WindowsServiceLifetimeHostBuilderExtensions.xml b/xml/Microsoft.Extensions.Hosting/WindowsServiceLifetimeHostBuilderExtensions.xml
index e919a6f289d..33b3fc20767 100644
--- a/xml/Microsoft.Extensions.Hosting/WindowsServiceLifetimeHostBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Hosting/WindowsServiceLifetimeHostBuilderExtensions.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Hosting/WindowsServiceLifetimeOptions.xml b/xml/Microsoft.Extensions.Hosting/WindowsServiceLifetimeOptions.xml
index 78733f3a301..868a751433b 100644
--- a/xml/Microsoft.Extensions.Hosting/WindowsServiceLifetimeOptions.xml
+++ b/xml/Microsoft.Extensions.Hosting/WindowsServiceLifetimeOptions.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Diagnostics/IDownstreamDependencyMetadata.xml b/xml/Microsoft.Extensions.Http.Diagnostics/IDownstreamDependencyMetadata.xml
index d643e9d52e5..e86cadb272b 100644
--- a/xml/Microsoft.Extensions.Http.Diagnostics/IDownstreamDependencyMetadata.xml
+++ b/xml/Microsoft.Extensions.Http.Diagnostics/IDownstreamDependencyMetadata.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Interface for passing dependency metadata.
diff --git a/xml/Microsoft.Extensions.Http.Diagnostics/IOutgoingRequestContext.xml b/xml/Microsoft.Extensions.Http.Diagnostics/IOutgoingRequestContext.xml
index a8a1a7a0f48..3cb025f71b0 100644
--- a/xml/Microsoft.Extensions.Http.Diagnostics/IOutgoingRequestContext.xml
+++ b/xml/Microsoft.Extensions.Http.Diagnostics/IOutgoingRequestContext.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Interface to represent outgoing request context.
@@ -68,12 +62,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Http.Diagnostics/RequestMetadata.xml b/xml/Microsoft.Extensions.Http.Diagnostics/RequestMetadata.xml
index 73eca9ecf2d..bbead88009b 100644
--- a/xml/Microsoft.Extensions.Http.Diagnostics/RequestMetadata.xml
+++ b/xml/Microsoft.Extensions.Http.Diagnostics/RequestMetadata.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Diagnostics/TelemetryConstants.xml b/xml/Microsoft.Extensions.Http.Diagnostics/TelemetryConstants.xml
index c0d21a4a7a0..0cdc81190d1 100644
--- a/xml/Microsoft.Extensions.Http.Diagnostics/TelemetryConstants.xml
+++ b/xml/Microsoft.Extensions.Http.Diagnostics/TelemetryConstants.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Logging/HttpClientLoggingTagNames.xml b/xml/Microsoft.Extensions.Http.Logging/HttpClientLoggingTagNames.xml
index e16ee0921c3..b1ce8c54cdd 100644
--- a/xml/Microsoft.Extensions.Http.Logging/HttpClientLoggingTagNames.xml
+++ b/xml/Microsoft.Extensions.Http.Logging/HttpClientLoggingTagNames.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Logging/IHttpClientAsyncLogger.xml b/xml/Microsoft.Extensions.Http.Logging/IHttpClientAsyncLogger.xml
index 37860b19ba0..d29191017e5 100644
--- a/xml/Microsoft.Extensions.Http.Logging/IHttpClientAsyncLogger.xml
+++ b/xml/Microsoft.Extensions.Http.Logging/IHttpClientAsyncLogger.xml
@@ -15,12 +15,6 @@
       <InterfaceName>Microsoft.Extensions.Http.Logging.IHttpClientLogger</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             An abstraction for asyncronous custom HTTP request logging for a named <see cref="T:System.Net.Http.HttpClient" /> instances returned by <see cref="T:System.Net.Http.IHttpClientFactory" />.
diff --git a/xml/Microsoft.Extensions.Http.Logging/IHttpClientLogEnricher.xml b/xml/Microsoft.Extensions.Http.Logging/IHttpClientLogEnricher.xml
index d9e5865bbaa..ef5508ae43e 100644
--- a/xml/Microsoft.Extensions.Http.Logging/IHttpClientLogEnricher.xml
+++ b/xml/Microsoft.Extensions.Http.Logging/IHttpClientLogEnricher.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Interface for implementing log enrichers for HTTP client requests.
diff --git a/xml/Microsoft.Extensions.Http.Logging/IHttpClientLogger.xml b/xml/Microsoft.Extensions.Http.Logging/IHttpClientLogger.xml
index 5ded0a67019..e6d56eb5fed 100644
--- a/xml/Microsoft.Extensions.Http.Logging/IHttpClientLogger.xml
+++ b/xml/Microsoft.Extensions.Http.Logging/IHttpClientLogger.xml
@@ -11,12 +11,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             An abstraction for custom HTTP request logging for a named <see cref="T:System.Net.Http.HttpClient" /> instances returned by <see cref="T:System.Net.Http.IHttpClientFactory" />.
diff --git a/xml/Microsoft.Extensions.Http.Logging/LoggingHttpMessageHandler.xml b/xml/Microsoft.Extensions.Http.Logging/LoggingHttpMessageHandler.xml
index 8171c4e6d18..d3f31f6ac93 100644
--- a/xml/Microsoft.Extensions.Http.Logging/LoggingHttpMessageHandler.xml
+++ b/xml/Microsoft.Extensions.Http.Logging/LoggingHttpMessageHandler.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Logging/LoggingOptions.xml b/xml/Microsoft.Extensions.Http.Logging/LoggingOptions.xml
index e7a2be42fc6..c8137fc0496 100644
--- a/xml/Microsoft.Extensions.Http.Logging/LoggingOptions.xml
+++ b/xml/Microsoft.Extensions.Http.Logging/LoggingOptions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Logging/LoggingScopeHttpMessageHandler.xml b/xml/Microsoft.Extensions.Http.Logging/LoggingScopeHttpMessageHandler.xml
index 217b826bb09..0146eb0f293 100644
--- a/xml/Microsoft.Extensions.Http.Logging/LoggingScopeHttpMessageHandler.xml
+++ b/xml/Microsoft.Extensions.Http.Logging/LoggingScopeHttpMessageHandler.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
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-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Resilience/HedgingEndpointOptions.xml b/xml/Microsoft.Extensions.Http.Resilience/HedgingEndpointOptions.xml
index 07d4e092386..04475979d3d 100644
--- a/xml/Microsoft.Extensions.Http.Resilience/HedgingEndpointOptions.xml
+++ b/xml/Microsoft.Extensions.Http.Resilience/HedgingEndpointOptions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Resilience/HttpClientResiliencePredicates.xml b/xml/Microsoft.Extensions.Http.Resilience/HttpClientResiliencePredicates.xml
index 83fd1d850cf..12f769688a9 100644
--- a/xml/Microsoft.Extensions.Http.Resilience/HttpClientResiliencePredicates.xml
+++ b/xml/Microsoft.Extensions.Http.Resilience/HttpClientResiliencePredicates.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
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-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Resilience/HttpResiliencePipelineBuilderExtensions.xml b/xml/Microsoft.Extensions.Http.Resilience/HttpResiliencePipelineBuilderExtensions.xml
index 9c47f1eae34..8af58a358ee 100644
--- a/xml/Microsoft.Extensions.Http.Resilience/HttpResiliencePipelineBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Http.Resilience/HttpResiliencePipelineBuilderExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
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-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Resilience/HttpStandardHedgingResilienceOptions.xml b/xml/Microsoft.Extensions.Http.Resilience/HttpStandardHedgingResilienceOptions.xml
index 3210f634857..032b1896034 100644
--- a/xml/Microsoft.Extensions.Http.Resilience/HttpStandardHedgingResilienceOptions.xml
+++ b/xml/Microsoft.Extensions.Http.Resilience/HttpStandardHedgingResilienceOptions.xml
@@ -26,10 +26,6 @@
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       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
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-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Resilience/HttpStandardResilienceOptions.xml b/xml/Microsoft.Extensions.Http.Resilience/HttpStandardResilienceOptions.xml
index 0a96a553c5d..e2af9a24d19 100644
--- a/xml/Microsoft.Extensions.Http.Resilience/HttpStandardResilienceOptions.xml
+++ b/xml/Microsoft.Extensions.Http.Resilience/HttpStandardResilienceOptions.xml
@@ -26,10 +26,6 @@
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       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
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-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Resilience/HttpStandardResiliencePipelineBuilderExtensions.xml b/xml/Microsoft.Extensions.Http.Resilience/HttpStandardResiliencePipelineBuilderExtensions.xml
index 3f776586b99..1054a2db0b4 100644
--- a/xml/Microsoft.Extensions.Http.Resilience/HttpStandardResiliencePipelineBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Http.Resilience/HttpStandardResiliencePipelineBuilderExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
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-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Resilience/IHttpResiliencePipelineBuilder.xml b/xml/Microsoft.Extensions.Http.Resilience/IHttpResiliencePipelineBuilder.xml
index d6adbf7b766..ecc438fb076 100644
--- a/xml/Microsoft.Extensions.Http.Resilience/IHttpResiliencePipelineBuilder.xml
+++ b/xml/Microsoft.Extensions.Http.Resilience/IHttpResiliencePipelineBuilder.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             The builder for configuring the HTTP client resilience pipeline.
diff --git a/xml/Microsoft.Extensions.Http.Resilience/IHttpStandardResiliencePipelineBuilder.xml b/xml/Microsoft.Extensions.Http.Resilience/IHttpStandardResiliencePipelineBuilder.xml
index 612fd5c0d49..2aed8fecb46 100644
--- a/xml/Microsoft.Extensions.Http.Resilience/IHttpStandardResiliencePipelineBuilder.xml
+++ b/xml/Microsoft.Extensions.Http.Resilience/IHttpStandardResiliencePipelineBuilder.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             The builder for the standard HTTP resilience pipeline.
diff --git a/xml/Microsoft.Extensions.Http.Resilience/IRoutingStrategyBuilder.xml b/xml/Microsoft.Extensions.Http.Resilience/IRoutingStrategyBuilder.xml
index ba5a8a0a11a..c55ad5f909a 100644
--- a/xml/Microsoft.Extensions.Http.Resilience/IRoutingStrategyBuilder.xml
+++ b/xml/Microsoft.Extensions.Http.Resilience/IRoutingStrategyBuilder.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Builder for configuring the routing strategies associated with hedging handler.
diff --git a/xml/Microsoft.Extensions.Http.Resilience/IStandardHedgingHandlerBuilder.xml b/xml/Microsoft.Extensions.Http.Resilience/IStandardHedgingHandlerBuilder.xml
index 28a5cc7a17e..9fa2d5be969 100644
--- a/xml/Microsoft.Extensions.Http.Resilience/IStandardHedgingHandlerBuilder.xml
+++ b/xml/Microsoft.Extensions.Http.Resilience/IStandardHedgingHandlerBuilder.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Defines the builder used to configure the standard hedging handler.
diff --git a/xml/Microsoft.Extensions.Http.Resilience/OrderedGroupsRoutingOptions.xml b/xml/Microsoft.Extensions.Http.Resilience/OrderedGroupsRoutingOptions.xml
index 90200c02a2e..7456d9d07d0 100644
--- a/xml/Microsoft.Extensions.Http.Resilience/OrderedGroupsRoutingOptions.xml
+++ b/xml/Microsoft.Extensions.Http.Resilience/OrderedGroupsRoutingOptions.xml
@@ -26,10 +26,6 @@
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       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
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-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Resilience/ResilienceHandler.xml b/xml/Microsoft.Extensions.Http.Resilience/ResilienceHandler.xml
index eecb3238294..3625dc4722b 100644
--- a/xml/Microsoft.Extensions.Http.Resilience/ResilienceHandler.xml
+++ b/xml/Microsoft.Extensions.Http.Resilience/ResilienceHandler.xml
@@ -29,10 +29,6 @@
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       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
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-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Resilience/ResilienceHandlerContext.xml b/xml/Microsoft.Extensions.Http.Resilience/ResilienceHandlerContext.xml
index 8087ac96ce7..bc97bf8493a 100644
--- a/xml/Microsoft.Extensions.Http.Resilience/ResilienceHandlerContext.xml
+++ b/xml/Microsoft.Extensions.Http.Resilience/ResilienceHandlerContext.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
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-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -74,12 +70,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
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@@ -123,12 +113,6 @@
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TOptions</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Http.Resilience/RoutingStrategyBuilderExtensions.xml b/xml/Microsoft.Extensions.Http.Resilience/RoutingStrategyBuilderExtensions.xml
index aa40c4f3039..681b6d94983 100644
--- a/xml/Microsoft.Extensions.Http.Resilience/RoutingStrategyBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Http.Resilience/RoutingStrategyBuilderExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
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-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Resilience/StandardHedgingHandlerBuilderExtensions.xml b/xml/Microsoft.Extensions.Http.Resilience/StandardHedgingHandlerBuilderExtensions.xml
index 5d951d828df..9753e8e7212 100644
--- a/xml/Microsoft.Extensions.Http.Resilience/StandardHedgingHandlerBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Http.Resilience/StandardHedgingHandlerBuilderExtensions.xml
@@ -26,10 +26,6 @@
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   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Resilience/UriEndpoint.xml b/xml/Microsoft.Extensions.Http.Resilience/UriEndpoint.xml
index bab1a5b9570..a593674c3ac 100644
--- a/xml/Microsoft.Extensions.Http.Resilience/UriEndpoint.xml
+++ b/xml/Microsoft.Extensions.Http.Resilience/UriEndpoint.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
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   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Resilience/UriEndpointGroup.xml b/xml/Microsoft.Extensions.Http.Resilience/UriEndpointGroup.xml
index f0080fa3aa9..1ab107eaf79 100644
--- a/xml/Microsoft.Extensions.Http.Resilience/UriEndpointGroup.xml
+++ b/xml/Microsoft.Extensions.Http.Resilience/UriEndpointGroup.xml
@@ -26,10 +26,6 @@
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     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Resilience/WeightedGroupsRoutingOptions.xml b/xml/Microsoft.Extensions.Http.Resilience/WeightedGroupsRoutingOptions.xml
index b0872f51e1e..307a0d30832 100644
--- a/xml/Microsoft.Extensions.Http.Resilience/WeightedGroupsRoutingOptions.xml
+++ b/xml/Microsoft.Extensions.Http.Resilience/WeightedGroupsRoutingOptions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http.Resilience/WeightedUriEndpoint.xml b/xml/Microsoft.Extensions.Http.Resilience/WeightedUriEndpoint.xml
index 775c8dca46d..1b832ae769e 100644
--- a/xml/Microsoft.Extensions.Http.Resilience/WeightedUriEndpoint.xml
+++ b/xml/Microsoft.Extensions.Http.Resilience/WeightedUriEndpoint.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http/HttpClientFactoryOptions.xml b/xml/Microsoft.Extensions.Http/HttpClientFactoryOptions.xml
index 27c698bad81..2428a039e8a 100644
--- a/xml/Microsoft.Extensions.Http/HttpClientFactoryOptions.xml
+++ b/xml/Microsoft.Extensions.Http/HttpClientFactoryOptions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Http/HttpMessageHandlerBuilder.xml b/xml/Microsoft.Extensions.Http/HttpMessageHandlerBuilder.xml
index f5dc8a49e78..9e79bd1494d 100644
--- a/xml/Microsoft.Extensions.Http/HttpMessageHandlerBuilder.xml
+++ b/xml/Microsoft.Extensions.Http/HttpMessageHandlerBuilder.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -172,14 +168,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Http/IHttpMessageHandlerBuilderFilter.xml b/xml/Microsoft.Extensions.Http/IHttpMessageHandlerBuilderFilter.xml
index bcdb264941d..bd8c4f507e8 100644
--- a/xml/Microsoft.Extensions.Http/IHttpMessageHandlerBuilderFilter.xml
+++ b/xml/Microsoft.Extensions.Http/IHttpMessageHandlerBuilderFilter.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Used by the <see cref="T:Microsoft.Extensions.Http.DefaultHttpClientFactory" /> to apply additional initialization to the configure the
diff --git a/xml/Microsoft.Extensions.Http/ITypedHttpClientFactory`1.xml b/xml/Microsoft.Extensions.Http/ITypedHttpClientFactory`1.xml
index 4fcd4d2edcf..b01a3fb95f7 100644
--- a/xml/Microsoft.Extensions.Http/ITypedHttpClientFactory`1.xml
+++ b/xml/Microsoft.Extensions.Http/ITypedHttpClientFactory`1.xml
@@ -32,12 +32,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TClient">The type of typed client to create.</typeparam>
     <summary>
diff --git a/xml/Microsoft.Extensions.Localization/IResourceNamesCache.xml b/xml/Microsoft.Extensions.Localization/IResourceNamesCache.xml
index c368a3d521d..fe759fc17ed 100644
--- a/xml/Microsoft.Extensions.Localization/IResourceNamesCache.xml
+++ b/xml/Microsoft.Extensions.Localization/IResourceNamesCache.xml
@@ -21,12 +21,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a cache of string names in resources.
diff --git a/xml/Microsoft.Extensions.Localization/IStringLocalizer.xml b/xml/Microsoft.Extensions.Localization/IStringLocalizer.xml
index 5ef209db144..5659d8e1481 100644
--- a/xml/Microsoft.Extensions.Localization/IStringLocalizer.xml
+++ b/xml/Microsoft.Extensions.Localization/IStringLocalizer.xml
@@ -21,12 +21,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a service that provides localized strings.
diff --git a/xml/Microsoft.Extensions.Localization/IStringLocalizerFactory.xml b/xml/Microsoft.Extensions.Localization/IStringLocalizerFactory.xml
index ea51d5f9cd5..ca5d7825bd8 100644
--- a/xml/Microsoft.Extensions.Localization/IStringLocalizerFactory.xml
+++ b/xml/Microsoft.Extensions.Localization/IStringLocalizerFactory.xml
@@ -21,12 +21,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a factory that creates <see cref="T:Microsoft.Extensions.Localization.IStringLocalizer" /> instances.
diff --git a/xml/Microsoft.Extensions.Localization/LocalizationOptions.xml b/xml/Microsoft.Extensions.Localization/LocalizationOptions.xml
index 05a694a8194..3bcdc346568 100644
--- a/xml/Microsoft.Extensions.Localization/LocalizationOptions.xml
+++ b/xml/Microsoft.Extensions.Localization/LocalizationOptions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Localization/LocalizedString.xml b/xml/Microsoft.Extensions.Localization/LocalizedString.xml
index dc4f5b0b269..77dba75ad50 100644
--- a/xml/Microsoft.Extensions.Localization/LocalizedString.xml
+++ b/xml/Microsoft.Extensions.Localization/LocalizedString.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -236,10 +232,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Localization/ResourceLocationAttribute.xml b/xml/Microsoft.Extensions.Localization/ResourceLocationAttribute.xml
index 469158dbb0b..4b8fd681b8f 100644
--- a/xml/Microsoft.Extensions.Localization/ResourceLocationAttribute.xml
+++ b/xml/Microsoft.Extensions.Localization/ResourceLocationAttribute.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Localization/ResourceManagerStringLocalizer.xml b/xml/Microsoft.Extensions.Localization/ResourceManagerStringLocalizer.xml
index ada373910cf..2fc10c705eb 100644
--- a/xml/Microsoft.Extensions.Localization/ResourceManagerStringLocalizer.xml
+++ b/xml/Microsoft.Extensions.Localization/ResourceManagerStringLocalizer.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -158,12 +154,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Localization/ResourceManagerStringLocalizerFactory.xml b/xml/Microsoft.Extensions.Localization/ResourceManagerStringLocalizerFactory.xml
index a12e4ad6ba4..d021f2a203b 100644
--- a/xml/Microsoft.Extensions.Localization/ResourceManagerStringLocalizerFactory.xml
+++ b/xml/Microsoft.Extensions.Localization/ResourceManagerStringLocalizerFactory.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Localization/ResourceNamesCache.xml b/xml/Microsoft.Extensions.Localization/ResourceNamesCache.xml
index 64edf3ae872..96d49c77e6c 100644
--- a/xml/Microsoft.Extensions.Localization/ResourceNamesCache.xml
+++ b/xml/Microsoft.Extensions.Localization/ResourceNamesCache.xml
@@ -70,12 +70,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IList&lt;System.String&gt;</ReturnType>
         <Attributes>
diff --git a/xml/Microsoft.Extensions.Localization/RootNamespaceAttribute.xml b/xml/Microsoft.Extensions.Localization/RootNamespaceAttribute.xml
index 58452dd6ccc..8ddabd72fee 100644
--- a/xml/Microsoft.Extensions.Localization/RootNamespaceAttribute.xml
+++ b/xml/Microsoft.Extensions.Localization/RootNamespaceAttribute.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Localization/StringLocalizerExtensions.xml b/xml/Microsoft.Extensions.Localization/StringLocalizerExtensions.xml
index 19c43a549fb..0fe7e4774dd 100644
--- a/xml/Microsoft.Extensions.Localization/StringLocalizerExtensions.xml
+++ b/xml/Microsoft.Extensions.Localization/StringLocalizerExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Localization/StringLocalizer`1.xml b/xml/Microsoft.Extensions.Localization/StringLocalizer`1.xml
index 9c904d55152..bfab6274cef 100644
--- a/xml/Microsoft.Extensions.Localization/StringLocalizer`1.xml
+++ b/xml/Microsoft.Extensions.Localization/StringLocalizer`1.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TResourceSource">The <see cref="T:System.Type" /> to provide strings for.</typeparam>
diff --git a/xml/Microsoft.Extensions.Logging.Abstractions/BufferedLogRecord.xml b/xml/Microsoft.Extensions.Logging.Abstractions/BufferedLogRecord.xml
index f2853480146..536c916ed6b 100644
--- a/xml/Microsoft.Extensions.Logging.Abstractions/BufferedLogRecord.xml
+++ b/xml/Microsoft.Extensions.Logging.Abstractions/BufferedLogRecord.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging.Abstractions/IBufferedLogger.xml b/xml/Microsoft.Extensions.Logging.Abstractions/IBufferedLogger.xml
index 69b2168215c..5f37af66273 100644
--- a/xml/Microsoft.Extensions.Logging.Abstractions/IBufferedLogger.xml
+++ b/xml/Microsoft.Extensions.Logging.Abstractions/IBufferedLogger.xml
@@ -10,12 +10,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
              Represents the ability of a logging provider to support buffered logging.
diff --git a/xml/Microsoft.Extensions.Logging.Abstractions/LogEntry`1.xml b/xml/Microsoft.Extensions.Logging.Abstractions/LogEntry`1.xml
index 3bc79e0ce42..e390b840620 100644
--- a/xml/Microsoft.Extensions.Logging.Abstractions/LogEntry`1.xml
+++ b/xml/Microsoft.Extensions.Logging.Abstractions/LogEntry`1.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TState" />
@@ -163,10 +159,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Exception</ReturnType>
diff --git a/xml/Microsoft.Extensions.Logging.Abstractions/NullLogger.xml b/xml/Microsoft.Extensions.Logging.Abstractions/NullLogger.xml
index 7010d3a6ce8..0430c99512a 100644
--- a/xml/Microsoft.Extensions.Logging.Abstractions/NullLogger.xml
+++ b/xml/Microsoft.Extensions.Logging.Abstractions/NullLogger.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -149,12 +145,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging.Abstractions/NullLoggerFactory.xml b/xml/Microsoft.Extensions.Logging.Abstractions/NullLoggerFactory.xml
index 3d978f0e802..737f9460dc6 100644
--- a/xml/Microsoft.Extensions.Logging.Abstractions/NullLoggerFactory.xml
+++ b/xml/Microsoft.Extensions.Logging.Abstractions/NullLoggerFactory.xml
@@ -73,12 +73,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -110,12 +104,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Logging.ILogger</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging.Abstractions/NullLoggerProvider.xml b/xml/Microsoft.Extensions.Logging.Abstractions/NullLoggerProvider.xml
index 93890f16e50..bf3e60d26eb 100644
--- a/xml/Microsoft.Extensions.Logging.Abstractions/NullLoggerProvider.xml
+++ b/xml/Microsoft.Extensions.Logging.Abstractions/NullLoggerProvider.xml
@@ -53,12 +53,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Logging.ILogger</ReturnType>
       </ReturnValue>
@@ -117,10 +111,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Logging.Abstractions.NullLoggerProvider</ReturnType>
diff --git a/xml/Microsoft.Extensions.Logging.Abstractions/NullLogger`1.xml b/xml/Microsoft.Extensions.Logging.Abstractions/NullLogger`1.xml
index 5ae84a15191..681a360a70a 100644
--- a/xml/Microsoft.Extensions.Logging.Abstractions/NullLogger`1.xml
+++ b/xml/Microsoft.Extensions.Logging.Abstractions/NullLogger`1.xml
@@ -81,12 +81,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IDisposable</ReturnType>
       </ReturnValue>
@@ -182,12 +176,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging.Configuration/ILoggerProviderConfigurationFactory.xml b/xml/Microsoft.Extensions.Logging.Configuration/ILoggerProviderConfigurationFactory.xml
index 4456c4a9f79..7efbaa14d50 100644
--- a/xml/Microsoft.Extensions.Logging.Configuration/ILoggerProviderConfigurationFactory.xml
+++ b/xml/Microsoft.Extensions.Logging.Configuration/ILoggerProviderConfigurationFactory.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Allows access to configuration section associated with logger provider
diff --git a/xml/Microsoft.Extensions.Logging.Configuration/ILoggerProviderConfiguration`1.xml b/xml/Microsoft.Extensions.Logging.Configuration/ILoggerProviderConfiguration`1.xml
index c3b6bf45f42..d2a95fc9816 100644
--- a/xml/Microsoft.Extensions.Logging.Configuration/ILoggerProviderConfiguration`1.xml
+++ b/xml/Microsoft.Extensions.Logging.Configuration/ILoggerProviderConfiguration`1.xml
@@ -28,12 +28,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="T">Type of logger provider to get configuration for</typeparam>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging.Configuration/LoggerProviderOptions.xml b/xml/Microsoft.Extensions.Logging.Configuration/LoggerProviderOptions.xml
index 25c1c3efc01..590bd39ed2b 100644
--- a/xml/Microsoft.Extensions.Logging.Configuration/LoggerProviderOptions.xml
+++ b/xml/Microsoft.Extensions.Logging.Configuration/LoggerProviderOptions.xml
@@ -48,10 +48,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Binding TOptions to configuration values may require generating dynamic code at runtime.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Binding TOptions to configuration values may require generating dynamic code at runtime.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/Microsoft.Extensions.Logging.Configuration/LoggerProviderOptionsChangeTokenSource`2.xml b/xml/Microsoft.Extensions.Logging.Configuration/LoggerProviderOptionsChangeTokenSource`2.xml
index 754d6af336d..b7834e38527 100644
--- a/xml/Microsoft.Extensions.Logging.Configuration/LoggerProviderOptionsChangeTokenSource`2.xml
+++ b/xml/Microsoft.Extensions.Logging.Configuration/LoggerProviderOptionsChangeTokenSource`2.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions" />
@@ -60,12 +56,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="providerConfiguration" Type="Microsoft.Extensions.Logging.Configuration.ILoggerProviderConfiguration&lt;TProvider&gt;" />
       </Parameters>
diff --git a/xml/Microsoft.Extensions.Logging.Configuration/LoggingBuilderConfigurationExtensions.xml b/xml/Microsoft.Extensions.Logging.Configuration/LoggingBuilderConfigurationExtensions.xml
index 20cd4d26f4c..3cd1fd15bfd 100644
--- a/xml/Microsoft.Extensions.Logging.Configuration/LoggingBuilderConfigurationExtensions.xml
+++ b/xml/Microsoft.Extensions.Logging.Configuration/LoggingBuilderConfigurationExtensions.xml
@@ -41,12 +41,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging.Console/ConfigurationConsoleLoggerSettings.xml b/xml/Microsoft.Extensions.Logging.Console/ConfigurationConsoleLoggerSettings.xml
index efdfb7abdea..c5bf464effa 100644
--- a/xml/Microsoft.Extensions.Logging.Console/ConfigurationConsoleLoggerSettings.xml
+++ b/xml/Microsoft.Extensions.Logging.Console/ConfigurationConsoleLoggerSettings.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -90,10 +86,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Primitives.IChangeToken</ReturnType>
diff --git a/xml/Microsoft.Extensions.Logging.Console/ConsoleFormatter.xml b/xml/Microsoft.Extensions.Logging.Console/ConsoleFormatter.xml
index aa75743ca76..7d76eb1e8cf 100644
--- a/xml/Microsoft.Extensions.Logging.Console/ConsoleFormatter.xml
+++ b/xml/Microsoft.Extensions.Logging.Console/ConsoleFormatter.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -95,12 +91,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging.Console/ConsoleFormatterNames.xml b/xml/Microsoft.Extensions.Logging.Console/ConsoleFormatterNames.xml
index eddaab45bad..bff79b5349f 100644
--- a/xml/Microsoft.Extensions.Logging.Console/ConsoleFormatterNames.xml
+++ b/xml/Microsoft.Extensions.Logging.Console/ConsoleFormatterNames.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging.Console/ConsoleFormatterOptions.xml b/xml/Microsoft.Extensions.Logging.Console/ConsoleFormatterOptions.xml
index 8ad5eccf6a3..92ae9f9bcb8 100644
--- a/xml/Microsoft.Extensions.Logging.Console/ConsoleFormatterOptions.xml
+++ b/xml/Microsoft.Extensions.Logging.Console/ConsoleFormatterOptions.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging.Console/ConsoleLoggerOptions.xml b/xml/Microsoft.Extensions.Logging.Console/ConsoleLoggerOptions.xml
index 89a91febc1a..8be4213030b 100644
--- a/xml/Microsoft.Extensions.Logging.Console/ConsoleLoggerOptions.xml
+++ b/xml/Microsoft.Extensions.Logging.Console/ConsoleLoggerOptions.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging.Console/ConsoleLoggerProvider.xml b/xml/Microsoft.Extensions.Logging.Console/ConsoleLoggerProvider.xml
index 41c87a4a9ef..12bbab1f80c 100644
--- a/xml/Microsoft.Extensions.Logging.Console/ConsoleLoggerProvider.xml
+++ b/xml/Microsoft.Extensions.Logging.Console/ConsoleLoggerProvider.xml
@@ -64,12 +64,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="options" Type="Microsoft.Extensions.Options.IOptionsMonitor&lt;Microsoft.Extensions.Logging.Console.ConsoleLoggerOptions&gt;" />
       </Parameters>
@@ -94,12 +88,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="options" Type="Microsoft.Extensions.Options.IOptionsMonitor&lt;Microsoft.Extensions.Logging.Console.ConsoleLoggerOptions&gt;" />
         <Parameter Name="formatters" Type="System.Collections.Generic.IEnumerable&lt;Microsoft.Extensions.Logging.Console.ConsoleFormatter&gt;">
@@ -136,12 +124,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Logging.ILogger</ReturnType>
       </ReturnValue>
@@ -198,12 +180,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging.Console/ConsoleLoggerSettings.xml b/xml/Microsoft.Extensions.Logging.Console/ConsoleLoggerSettings.xml
index 945ac74dc34..a146bf56eab 100644
--- a/xml/Microsoft.Extensions.Logging.Console/ConsoleLoggerSettings.xml
+++ b/xml/Microsoft.Extensions.Logging.Console/ConsoleLoggerSettings.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -84,14 +80,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Primitives.IChangeToken</ReturnType>
diff --git a/xml/Microsoft.Extensions.Logging.Console/IConsoleLoggerSettings.xml b/xml/Microsoft.Extensions.Logging.Console/IConsoleLoggerSettings.xml
index af1a9aacf5d..1a8d50639fc 100644
--- a/xml/Microsoft.Extensions.Logging.Console/IConsoleLoggerSettings.xml
+++ b/xml/Microsoft.Extensions.Logging.Console/IConsoleLoggerSettings.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Obsolete("This type is retained only for compatibility. The recommended alternative is ConsoleLoggerOptions.", true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("This type is retained only for compatibility. The recommended alternative is ConsoleLoggerOptions.", true)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -55,10 +51,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Primitives.IChangeToken</ReturnType>
diff --git a/xml/Microsoft.Extensions.Logging.Debug/DebugLoggerProvider.xml b/xml/Microsoft.Extensions.Logging.Debug/DebugLoggerProvider.xml
index f2a00968ce1..a081278bca3 100644
--- a/xml/Microsoft.Extensions.Logging.Debug/DebugLoggerProvider.xml
+++ b/xml/Microsoft.Extensions.Logging.Debug/DebugLoggerProvider.xml
@@ -78,12 +78,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Logging.ILogger</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging.EventLog/EventLogLoggerProvider.xml b/xml/Microsoft.Extensions.Logging.EventLog/EventLogLoggerProvider.xml
index d10b4ff973a..7d4c3b9df12 100644
--- a/xml/Microsoft.Extensions.Logging.EventLog/EventLogLoggerProvider.xml
+++ b/xml/Microsoft.Extensions.Logging.EventLog/EventLogLoggerProvider.xml
@@ -80,12 +80,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="settings" Type="Microsoft.Extensions.Logging.EventLog.EventLogSettings" />
       </Parameters>
@@ -110,12 +104,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="options" Type="Microsoft.Extensions.Options.IOptions&lt;Microsoft.Extensions.Logging.EventLog.EventLogSettings&gt;" />
       </Parameters>
@@ -143,12 +131,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Logging.ILogger</ReturnType>
       </ReturnValue>
@@ -205,12 +187,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging.EventLog/EventLogSettings.xml b/xml/Microsoft.Extensions.Logging.EventLog/EventLogSettings.xml
index a5a46f16521..dde352a7d0a 100644
--- a/xml/Microsoft.Extensions.Logging.EventLog/EventLogSettings.xml
+++ b/xml/Microsoft.Extensions.Logging.EventLog/EventLogSettings.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging.EventSource/EventSourceLoggerProvider.xml b/xml/Microsoft.Extensions.Logging.EventSource/EventSourceLoggerProvider.xml
index ecadfaa346d..122c70eb55a 100644
--- a/xml/Microsoft.Extensions.Logging.EventSource/EventSourceLoggerProvider.xml
+++ b/xml/Microsoft.Extensions.Logging.EventSource/EventSourceLoggerProvider.xml
@@ -52,12 +52,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="eventSource" Type="Microsoft.Extensions.Logging.EventSource.LoggingEventSource" />
       </Parameters>
@@ -85,12 +79,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Logging.ILogger</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging.EventSource/LoggingEventSource+Keywords.xml b/xml/Microsoft.Extensions.Logging.EventSource/LoggingEventSource+Keywords.xml
index 3d8c6c70a97..6f066334fb2 100644
--- a/xml/Microsoft.Extensions.Logging.EventSource/LoggingEventSource+Keywords.xml
+++ b/xml/Microsoft.Extensions.Logging.EventSource/LoggingEventSource+Keywords.xml
@@ -19,12 +19,6 @@
     <BaseTypeName>System.Object</BaseTypeName>
   </Base>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             This is public from an EventSource consumer point of view, but since these definitions
diff --git a/xml/Microsoft.Extensions.Logging.EventSource/LoggingEventSource.xml b/xml/Microsoft.Extensions.Logging.EventSource/LoggingEventSource.xml
index 15a1c6cb811..cce0e89e516 100644
--- a/xml/Microsoft.Extensions.Logging.EventSource/LoggingEventSource.xml
+++ b/xml/Microsoft.Extensions.Logging.EventSource/LoggingEventSource.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging.Testing/FakeLogCollector.xml b/xml/Microsoft.Extensions.Logging.Testing/FakeLogCollector.xml
index 42c77ac904e..eaa5fa8050e 100644
--- a/xml/Microsoft.Extensions.Logging.Testing/FakeLogCollector.xml
+++ b/xml/Microsoft.Extensions.Logging.Testing/FakeLogCollector.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging.Testing/FakeLogCollectorOptions.xml b/xml/Microsoft.Extensions.Logging.Testing/FakeLogCollectorOptions.xml
index b43cca414df..de3f402074c 100644
--- a/xml/Microsoft.Extensions.Logging.Testing/FakeLogCollectorOptions.xml
+++ b/xml/Microsoft.Extensions.Logging.Testing/FakeLogCollectorOptions.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging.Testing/FakeLogRecord.xml b/xml/Microsoft.Extensions.Logging.Testing/FakeLogRecord.xml
index 2f86ee2536d..0cd849249da 100644
--- a/xml/Microsoft.Extensions.Logging.Testing/FakeLogRecord.xml
+++ b/xml/Microsoft.Extensions.Logging.Testing/FakeLogRecord.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -171,12 +167,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -301,10 +291,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -464,12 +450,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging.Testing/FakeLogger.xml b/xml/Microsoft.Extensions.Logging.Testing/FakeLogger.xml
index 9d646dcfbee..2d30e4b7118 100644
--- a/xml/Microsoft.Extensions.Logging.Testing/FakeLogger.xml
+++ b/xml/Microsoft.Extensions.Logging.Testing/FakeLogger.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -65,12 +61,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="collector" Type="Microsoft.Extensions.Logging.Testing.FakeLogCollector" />
         <Parameter Name="category" Type="System.String" />
@@ -181,10 +171,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -345,12 +331,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging.Testing/FakeLoggerProvider.xml b/xml/Microsoft.Extensions.Logging.Testing/FakeLoggerProvider.xml
index 2d4830cfabd..fc057213503 100644
--- a/xml/Microsoft.Extensions.Logging.Testing/FakeLoggerProvider.xml
+++ b/xml/Microsoft.Extensions.Logging.Testing/FakeLoggerProvider.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -72,12 +68,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="collector" Type="Microsoft.Extensions.Logging.Testing.FakeLogCollector" />
       </Parameters>
diff --git a/xml/Microsoft.Extensions.Logging.Testing/FakeLogger`1.xml b/xml/Microsoft.Extensions.Logging.Testing/FakeLogger`1.xml
index 627e8ea9b2b..69b68687042 100644
--- a/xml/Microsoft.Extensions.Logging.Testing/FakeLogger`1.xml
+++ b/xml/Microsoft.Extensions.Logging.Testing/FakeLogger`1.xml
@@ -69,12 +69,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="collector" Type="Microsoft.Extensions.Logging.Testing.FakeLogCollector" />
       </Parameters>
@@ -103,12 +97,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="outputSink" Type="System.Action&lt;System.String&gt;" />
       </Parameters>
diff --git a/xml/Microsoft.Extensions.Logging.TraceSource/TraceSourceLoggerProvider.xml b/xml/Microsoft.Extensions.Logging.TraceSource/TraceSourceLoggerProvider.xml
index 6cda7b44ec6..fc28a9f5cd0 100644
--- a/xml/Microsoft.Extensions.Logging.TraceSource/TraceSourceLoggerProvider.xml
+++ b/xml/Microsoft.Extensions.Logging.TraceSource/TraceSourceLoggerProvider.xml
@@ -57,12 +57,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="rootSourceSwitch" Type="System.Diagnostics.SourceSwitch" />
       </Parameters>
@@ -87,12 +81,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="rootSourceSwitch" Type="System.Diagnostics.SourceSwitch" />
         <Parameter Name="rootTraceListener" Type="System.Diagnostics.TraceListener">
@@ -129,12 +117,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Logging.ILogger</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging/ConsoleLoggerExtensions.xml b/xml/Microsoft.Extensions.Logging/ConsoleLoggerExtensions.xml
index db9c3cab0ac..e9dceaf35df 100644
--- a/xml/Microsoft.Extensions.Logging/ConsoleLoggerExtensions.xml
+++ b/xml/Microsoft.Extensions.Logging/ConsoleLoggerExtensions.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging/DebugLoggerFactoryExtensions.xml b/xml/Microsoft.Extensions.Logging/DebugLoggerFactoryExtensions.xml
index fadb96246ac..76d1cec1d34 100644
--- a/xml/Microsoft.Extensions.Logging/DebugLoggerFactoryExtensions.xml
+++ b/xml/Microsoft.Extensions.Logging/DebugLoggerFactoryExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging/EventId.xml b/xml/Microsoft.Extensions.Logging/EventId.xml
index 057786468fe..b8d71b28099 100644
--- a/xml/Microsoft.Extensions.Logging/EventId.xml
+++ b/xml/Microsoft.Extensions.Logging/EventId.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -316,12 +312,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging/EventLoggerFactoryExtensions.xml b/xml/Microsoft.Extensions.Logging/EventLoggerFactoryExtensions.xml
index 47224e36659..cb44c3b1451 100644
--- a/xml/Microsoft.Extensions.Logging/EventLoggerFactoryExtensions.xml
+++ b/xml/Microsoft.Extensions.Logging/EventLoggerFactoryExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging/EventSourceLoggerFactoryExtensions.xml b/xml/Microsoft.Extensions.Logging/EventSourceLoggerFactoryExtensions.xml
index b71439631ad..e188891c191 100644
--- a/xml/Microsoft.Extensions.Logging/EventSourceLoggerFactoryExtensions.xml
+++ b/xml/Microsoft.Extensions.Logging/EventSourceLoggerFactoryExtensions.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging/FakeLoggerBuilderExtensions.xml b/xml/Microsoft.Extensions.Logging/FakeLoggerBuilderExtensions.xml
index 667e3fd0148..3bb41a9a619 100644
--- a/xml/Microsoft.Extensions.Logging/FakeLoggerBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Logging/FakeLoggerBuilderExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging/FilterLoggingBuilderExtensions.xml b/xml/Microsoft.Extensions.Logging/FilterLoggingBuilderExtensions.xml
index 5217951ed2b..49509624e55 100644
--- a/xml/Microsoft.Extensions.Logging/FilterLoggingBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Logging/FilterLoggingBuilderExtensions.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging/IExternalScopeProvider.xml b/xml/Microsoft.Extensions.Logging/IExternalScopeProvider.xml
index 00b823e974c..30be81b1007 100644
--- a/xml/Microsoft.Extensions.Logging/IExternalScopeProvider.xml
+++ b/xml/Microsoft.Extensions.Logging/IExternalScopeProvider.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a storage of common scope data.
diff --git a/xml/Microsoft.Extensions.Logging/ILogger.xml b/xml/Microsoft.Extensions.Logging/ILogger.xml
index 17e95a1ec7c..f5b9afb2966 100644
--- a/xml/Microsoft.Extensions.Logging/ILogger.xml
+++ b/xml/Microsoft.Extensions.Logging/ILogger.xml
@@ -21,12 +21,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a type used to perform logging.
@@ -108,12 +102,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging/ILoggerFactory.xml b/xml/Microsoft.Extensions.Logging/ILoggerFactory.xml
index c8427462a05..82b6df56a63 100644
--- a/xml/Microsoft.Extensions.Logging/ILoggerFactory.xml
+++ b/xml/Microsoft.Extensions.Logging/ILoggerFactory.xml
@@ -25,12 +25,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a type used to configure the logging system and create instances of <see cref="T:Microsoft.Extensions.Logging.ILogger" /> from
diff --git a/xml/Microsoft.Extensions.Logging/ILoggerProvider.xml b/xml/Microsoft.Extensions.Logging/ILoggerProvider.xml
index 0238d938ee5..fcea74a3b07 100644
--- a/xml/Microsoft.Extensions.Logging/ILoggerProvider.xml
+++ b/xml/Microsoft.Extensions.Logging/ILoggerProvider.xml
@@ -45,12 +45,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Logging.ILogger</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging/ILoggingBuilder.xml b/xml/Microsoft.Extensions.Logging/ILoggingBuilder.xml
index 49084cde38e..a411e838309 100644
--- a/xml/Microsoft.Extensions.Logging/ILoggingBuilder.xml
+++ b/xml/Microsoft.Extensions.Logging/ILoggingBuilder.xml
@@ -28,12 +28,6 @@
     <TypeForwarding From="Microsoft.Extensions.Logging" FromVersion="9.0.0.0" To="Microsoft.Extensions.Logging.Abstractions" ToVersion="9.0.0.0" FrameworkAlternate="net-8.0;net-9.0;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             An interface for configuring logging providers.
diff --git a/xml/Microsoft.Extensions.Logging/ISupportExternalScope.xml b/xml/Microsoft.Extensions.Logging/ISupportExternalScope.xml
index 3bec13122c6..2afc3974dae 100644
--- a/xml/Microsoft.Extensions.Logging/ISupportExternalScope.xml
+++ b/xml/Microsoft.Extensions.Logging/ISupportExternalScope.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a <see cref="T:Microsoft.Extensions.Logging.ILoggerProvider" /> that is able to consume external scope information.
diff --git a/xml/Microsoft.Extensions.Logging/ITagCollector.xml b/xml/Microsoft.Extensions.Logging/ITagCollector.xml
index fda0ee284f0..8813a6ba785 100644
--- a/xml/Microsoft.Extensions.Logging/ITagCollector.xml
+++ b/xml/Microsoft.Extensions.Logging/ITagCollector.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Interface given to custom tag providers, enabling them to emit tags.
diff --git a/xml/Microsoft.Extensions.Logging/LoggerExtensions.xml b/xml/Microsoft.Extensions.Logging/LoggerExtensions.xml
index fcdaae3ca65..2097feaa35f 100644
--- a/xml/Microsoft.Extensions.Logging/LoggerExtensions.xml
+++ b/xml/Microsoft.Extensions.Logging/LoggerExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -206,12 +202,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -265,12 +255,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -428,12 +412,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -486,12 +464,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -648,12 +620,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -706,12 +672,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -868,12 +828,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -926,12 +880,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1088,12 +1036,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1146,12 +1088,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1308,12 +1244,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1366,12 +1296,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1528,12 +1452,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1586,12 +1504,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging/LoggerExternalScopeProvider.xml b/xml/Microsoft.Extensions.Logging/LoggerExternalScopeProvider.xml
index ac2fcfacb33..3c6ff5ecec9 100644
--- a/xml/Microsoft.Extensions.Logging/LoggerExternalScopeProvider.xml
+++ b/xml/Microsoft.Extensions.Logging/LoggerExternalScopeProvider.xml
@@ -67,12 +67,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -123,12 +117,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IDisposable</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging/LoggerFactory.xml b/xml/Microsoft.Extensions.Logging/LoggerFactory.xml
index 968f9d4f013..289709c5ee4 100644
--- a/xml/Microsoft.Extensions.Logging/LoggerFactory.xml
+++ b/xml/Microsoft.Extensions.Logging/LoggerFactory.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging/LoggerFactoryExtensions.xml b/xml/Microsoft.Extensions.Logging/LoggerFactoryExtensions.xml
index 8b40eb9d4a1..4ad297616c1 100644
--- a/xml/Microsoft.Extensions.Logging/LoggerFactoryExtensions.xml
+++ b/xml/Microsoft.Extensions.Logging/LoggerFactoryExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging/LoggerFilterOptions.xml b/xml/Microsoft.Extensions.Logging/LoggerFilterOptions.xml
index e944caacf31..097813d5a38 100644
--- a/xml/Microsoft.Extensions.Logging/LoggerFilterOptions.xml
+++ b/xml/Microsoft.Extensions.Logging/LoggerFilterOptions.xml
@@ -31,10 +31,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging/LoggerFilterRule.xml b/xml/Microsoft.Extensions.Logging/LoggerFilterRule.xml
index 66c6fbecfee..63ff4998669 100644
--- a/xml/Microsoft.Extensions.Logging/LoggerFilterRule.xml
+++ b/xml/Microsoft.Extensions.Logging/LoggerFilterRule.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -178,12 +174,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging/LoggerMessage.xml b/xml/Microsoft.Extensions.Logging/LoggerMessage.xml
index 3df3ac9b2ca..76b62bef6a7 100644
--- a/xml/Microsoft.Extensions.Logging/LoggerMessage.xml
+++ b/xml/Microsoft.Extensions.Logging/LoggerMessage.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -54,12 +50,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Action&lt;Microsoft.Extensions.Logging.ILogger,System.Exception&gt;</ReturnType>
       </ReturnValue>
@@ -92,12 +82,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Action&lt;Microsoft.Extensions.Logging.ILogger,System.Exception&gt;</ReturnType>
       </ReturnValue>
@@ -139,12 +123,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Action&lt;Microsoft.Extensions.Logging.ILogger,T1,System.Exception&gt;</ReturnType>
       </ReturnValue>
@@ -733,12 +711,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Func&lt;Microsoft.Extensions.Logging.ILogger,System.IDisposable&gt;</ReturnType>
       </ReturnValue>
@@ -767,12 +739,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Func&lt;Microsoft.Extensions.Logging.ILogger,T1,System.IDisposable&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging/LoggerMessageAttribute.xml b/xml/Microsoft.Extensions.Logging/LoggerMessageAttribute.xml
index 974834097d2..f2195d3d1c1 100644
--- a/xml/Microsoft.Extensions.Logging/LoggerMessageAttribute.xml
+++ b/xml/Microsoft.Extensions.Logging/LoggerMessageAttribute.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -225,14 +221,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Logging/LoggerMessageHelper.xml b/xml/Microsoft.Extensions.Logging/LoggerMessageHelper.xml
index 02298dc0b02..7377f1ee118 100644
--- a/xml/Microsoft.Extensions.Logging/LoggerMessageHelper.xml
+++ b/xml/Microsoft.Extensions.Logging/LoggerMessageHelper.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -92,12 +88,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging/LoggerMessageState+ClassifiedTag.xml b/xml/Microsoft.Extensions.Logging/LoggerMessageState+ClassifiedTag.xml
index 957910f1792..b89db1123ae 100644
--- a/xml/Microsoft.Extensions.Logging/LoggerMessageState+ClassifiedTag.xml
+++ b/xml/Microsoft.Extensions.Logging/LoggerMessageState+ClassifiedTag.xml
@@ -143,10 +143,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/Microsoft.Extensions.Logging/LoggerMessageState.xml b/xml/Microsoft.Extensions.Logging/LoggerMessageState.xml
index b40364f5ade..9c422427c32 100644
--- a/xml/Microsoft.Extensions.Logging/LoggerMessageState.xml
+++ b/xml/Microsoft.Extensions.Logging/LoggerMessageState.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging/Logger`1.xml b/xml/Microsoft.Extensions.Logging/Logger`1.xml
index 6f4495b086e..3cff8ec5f31 100644
--- a/xml/Microsoft.Extensions.Logging/Logger`1.xml
+++ b/xml/Microsoft.Extensions.Logging/Logger`1.xml
@@ -69,12 +69,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="factory" Type="Microsoft.Extensions.Logging.ILoggerFactory" />
       </Parameters>
diff --git a/xml/Microsoft.Extensions.Logging/LoggingBuilderExtensions.xml b/xml/Microsoft.Extensions.Logging/LoggingBuilderExtensions.xml
index e0a1c4735b9..d960b48c044 100644
--- a/xml/Microsoft.Extensions.Logging/LoggingBuilderExtensions.xml
+++ b/xml/Microsoft.Extensions.Logging/LoggingBuilderExtensions.xml
@@ -55,12 +55,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Logging.ILoggingBuilder</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Logging/LoggingEnrichmentExtensions.xml b/xml/Microsoft.Extensions.Logging/LoggingEnrichmentExtensions.xml
index 4d03309b801..26ee3101306 100644
--- a/xml/Microsoft.Extensions.Logging/LoggingEnrichmentExtensions.xml
+++ b/xml/Microsoft.Extensions.Logging/LoggingEnrichmentExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging/LoggingRedactionExtensions.xml b/xml/Microsoft.Extensions.Logging/LoggingRedactionExtensions.xml
index 62f35cac572..39072ec6ca1 100644
--- a/xml/Microsoft.Extensions.Logging/LoggingRedactionExtensions.xml
+++ b/xml/Microsoft.Extensions.Logging/LoggingRedactionExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging/ProviderAliasAttribute.xml b/xml/Microsoft.Extensions.Logging/ProviderAliasAttribute.xml
index af1fcb875a6..3d4743061f8 100644
--- a/xml/Microsoft.Extensions.Logging/ProviderAliasAttribute.xml
+++ b/xml/Microsoft.Extensions.Logging/ProviderAliasAttribute.xml
@@ -31,10 +31,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging/TagNameAttribute.xml b/xml/Microsoft.Extensions.Logging/TagNameAttribute.xml
index 93af5baa28a..4dcacdd9b02 100644
--- a/xml/Microsoft.Extensions.Logging/TagNameAttribute.xml
+++ b/xml/Microsoft.Extensions.Logging/TagNameAttribute.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging/TagProviderAttribute.xml b/xml/Microsoft.Extensions.Logging/TagProviderAttribute.xml
index 447f632c4d2..2a85b59f85d 100644
--- a/xml/Microsoft.Extensions.Logging/TagProviderAttribute.xml
+++ b/xml/Microsoft.Extensions.Logging/TagProviderAttribute.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Logging/TraceSourceFactoryExtensions.xml b/xml/Microsoft.Extensions.Logging/TraceSourceFactoryExtensions.xml
index 49ec9b1dccd..3592654709c 100644
--- a/xml/Microsoft.Extensions.Logging/TraceSourceFactoryExtensions.xml
+++ b/xml/Microsoft.Extensions.Logging/TraceSourceFactoryExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.ObjectPool/DefaultObjectPoolProvider.xml b/xml/Microsoft.Extensions.ObjectPool/DefaultObjectPoolProvider.xml
index 63f26dd37d7..0ac229b291f 100644
--- a/xml/Microsoft.Extensions.ObjectPool/DefaultObjectPoolProvider.xml
+++ b/xml/Microsoft.Extensions.ObjectPool/DefaultObjectPoolProvider.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.ObjectPool.ObjectPool&lt;T&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.ObjectPool/DefaultObjectPool`1.xml b/xml/Microsoft.Extensions.ObjectPool/DefaultObjectPool`1.xml
index 9897d261108..870afadc477 100644
--- a/xml/Microsoft.Extensions.ObjectPool/DefaultObjectPool`1.xml
+++ b/xml/Microsoft.Extensions.ObjectPool/DefaultObjectPool`1.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type to pool objects for.</typeparam>
diff --git a/xml/Microsoft.Extensions.ObjectPool/DefaultPooledObjectPolicy`1.xml b/xml/Microsoft.Extensions.ObjectPool/DefaultPooledObjectPolicy`1.xml
index 8a61a6ad666..8fb76bb5364 100644
--- a/xml/Microsoft.Extensions.ObjectPool/DefaultPooledObjectPolicy`1.xml
+++ b/xml/Microsoft.Extensions.ObjectPool/DefaultPooledObjectPolicy`1.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of object which is being pooled.</typeparam>
diff --git a/xml/Microsoft.Extensions.ObjectPool/IPooledObjectPolicy`1.xml b/xml/Microsoft.Extensions.ObjectPool/IPooledObjectPolicy`1.xml
index e812469638d..ca2695c798a 100644
--- a/xml/Microsoft.Extensions.ObjectPool/IPooledObjectPolicy`1.xml
+++ b/xml/Microsoft.Extensions.ObjectPool/IPooledObjectPolicy`1.xml
@@ -24,12 +24,6 @@
     <TypeParameter Name="T" />
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="T">The type of object which is being pooled.</typeparam>
     <summary>
diff --git a/xml/Microsoft.Extensions.ObjectPool/LeakTrackingObjectPoolProvider.xml b/xml/Microsoft.Extensions.ObjectPool/LeakTrackingObjectPoolProvider.xml
index 05bc4a4f0d9..5cc69bae6a1 100644
--- a/xml/Microsoft.Extensions.ObjectPool/LeakTrackingObjectPoolProvider.xml
+++ b/xml/Microsoft.Extensions.ObjectPool/LeakTrackingObjectPoolProvider.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.ObjectPool/LeakTrackingObjectPool`1.xml b/xml/Microsoft.Extensions.ObjectPool/LeakTrackingObjectPool`1.xml
index a55e7efbedd..be1b01b1708 100644
--- a/xml/Microsoft.Extensions.ObjectPool/LeakTrackingObjectPool`1.xml
+++ b/xml/Microsoft.Extensions.ObjectPool/LeakTrackingObjectPool`1.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of object which is being pooled.</typeparam>
diff --git a/xml/Microsoft.Extensions.ObjectPool/ObjectPool.xml b/xml/Microsoft.Extensions.ObjectPool/ObjectPool.xml
index a1e548816d9..145b0c61a15 100644
--- a/xml/Microsoft.Extensions.ObjectPool/ObjectPool.xml
+++ b/xml/Microsoft.Extensions.ObjectPool/ObjectPool.xml
@@ -38,12 +38,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.ObjectPool.ObjectPool&lt;T&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.ObjectPool/ObjectPoolProvider.xml b/xml/Microsoft.Extensions.ObjectPool/ObjectPoolProvider.xml
index 32520e54a62..08db9841227 100644
--- a/xml/Microsoft.Extensions.ObjectPool/ObjectPoolProvider.xml
+++ b/xml/Microsoft.Extensions.ObjectPool/ObjectPoolProvider.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.ObjectPool/ObjectPoolProviderExtensions.xml b/xml/Microsoft.Extensions.ObjectPool/ObjectPoolProviderExtensions.xml
index 25598d55f97..bd28ee32d4d 100644
--- a/xml/Microsoft.Extensions.ObjectPool/ObjectPoolProviderExtensions.xml
+++ b/xml/Microsoft.Extensions.ObjectPool/ObjectPoolProviderExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.ObjectPool/ObjectPool`1.xml b/xml/Microsoft.Extensions.ObjectPool/ObjectPool`1.xml
index 8d078b42d3a..105a8e30516 100644
--- a/xml/Microsoft.Extensions.ObjectPool/ObjectPool`1.xml
+++ b/xml/Microsoft.Extensions.ObjectPool/ObjectPool`1.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of objects to pool.</typeparam>
diff --git a/xml/Microsoft.Extensions.ObjectPool/PooledObjectPolicy`1.xml b/xml/Microsoft.Extensions.ObjectPool/PooledObjectPolicy`1.xml
index 6193aede45a..b64613a64d2 100644
--- a/xml/Microsoft.Extensions.ObjectPool/PooledObjectPolicy`1.xml
+++ b/xml/Microsoft.Extensions.ObjectPool/PooledObjectPolicy`1.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of object which is being pooled.</typeparam>
diff --git a/xml/Microsoft.Extensions.ObjectPool/StringBuilderPooledObjectPolicy.xml b/xml/Microsoft.Extensions.ObjectPool/StringBuilderPooledObjectPolicy.xml
index 8c90712918b..701eff15712 100644
--- a/xml/Microsoft.Extensions.ObjectPool/StringBuilderPooledObjectPolicy.xml
+++ b/xml/Microsoft.Extensions.ObjectPool/StringBuilderPooledObjectPolicy.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Options.Contextual.Provider/IConfigureContextualOptions`1.xml b/xml/Microsoft.Extensions.Options.Contextual.Provider/IConfigureContextualOptions`1.xml
index b4c605f4bca..dab40b348c4 100644
--- a/xml/Microsoft.Extensions.Options.Contextual.Provider/IConfigureContextualOptions`1.xml
+++ b/xml/Microsoft.Extensions.Options.Contextual.Provider/IConfigureContextualOptions`1.xml
@@ -22,12 +22,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TOptions">The type of options configured.</typeparam>
     <summary>
diff --git a/xml/Microsoft.Extensions.Options.Contextual.Provider/ILoadContextualOptions`1.xml b/xml/Microsoft.Extensions.Options.Contextual.Provider/ILoadContextualOptions`1.xml
index 3cd1facb712..d228a8aaa5a 100644
--- a/xml/Microsoft.Extensions.Options.Contextual.Provider/ILoadContextualOptions`1.xml
+++ b/xml/Microsoft.Extensions.Options.Contextual.Provider/ILoadContextualOptions`1.xml
@@ -17,12 +17,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TOptions">The type of options configured.</typeparam>
     <summary>
diff --git a/xml/Microsoft.Extensions.Options.Contextual.Provider/IOptionsContextReceiver.xml b/xml/Microsoft.Extensions.Options.Contextual.Provider/IOptionsContextReceiver.xml
index 40d287a9064..1acdb96922f 100644
--- a/xml/Microsoft.Extensions.Options.Contextual.Provider/IOptionsContextReceiver.xml
+++ b/xml/Microsoft.Extensions.Options.Contextual.Provider/IOptionsContextReceiver.xml
@@ -10,12 +10,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Provides functionality for contextual options providers to collect context data.
diff --git a/xml/Microsoft.Extensions.Options.Contextual.Provider/NullConfigureContextualOptions.xml b/xml/Microsoft.Extensions.Options.Contextual.Provider/NullConfigureContextualOptions.xml
index 509b2bcea47..215202044a5 100644
--- a/xml/Microsoft.Extensions.Options.Contextual.Provider/NullConfigureContextualOptions.xml
+++ b/xml/Microsoft.Extensions.Options.Contextual.Provider/NullConfigureContextualOptions.xml
@@ -32,12 +32,6 @@
         <AssemblyName>Microsoft.Extensions.Options.Contextual</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Options.Contextual.Provider.IConfigureContextualOptions&lt;TOptions&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Options.Contextual/IContextualOptions`2.xml b/xml/Microsoft.Extensions.Options.Contextual/IContextualOptions`2.xml
index 78816ceb0fb..6b3cea6142e 100644
--- a/xml/Microsoft.Extensions.Options.Contextual/IContextualOptions`2.xml
+++ b/xml/Microsoft.Extensions.Options.Contextual/IContextualOptions`2.xml
@@ -28,12 +28,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TOptions">The type of options being requested.</typeparam>
     <typeparam name="TContext">A type that defines the context for this request.</typeparam>
diff --git a/xml/Microsoft.Extensions.Options.Contextual/INamedContextualOptions`2.xml b/xml/Microsoft.Extensions.Options.Contextual/INamedContextualOptions`2.xml
index ac34df8ec3a..3370cf55411 100644
--- a/xml/Microsoft.Extensions.Options.Contextual/INamedContextualOptions`2.xml
+++ b/xml/Microsoft.Extensions.Options.Contextual/INamedContextualOptions`2.xml
@@ -32,12 +32,6 @@
       <InterfaceName>Microsoft.Extensions.Options.Contextual.IContextualOptions&lt;TOptions,TContext&gt;</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TOptions">The type of options being requested.</typeparam>
     <typeparam name="TContext">A type defining the context for this request.</typeparam>
diff --git a/xml/Microsoft.Extensions.Options.Contextual/IOptionsContext.xml b/xml/Microsoft.Extensions.Options.Contextual/IOptionsContext.xml
index 16f2d5416e2..c579a979d6c 100644
--- a/xml/Microsoft.Extensions.Options.Contextual/IOptionsContext.xml
+++ b/xml/Microsoft.Extensions.Options.Contextual/IOptionsContext.xml
@@ -11,12 +11,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             The context used to configure contextual options.
diff --git a/xml/Microsoft.Extensions.Options/ConfigurationChangeTokenSource`1.xml b/xml/Microsoft.Extensions.Options/ConfigurationChangeTokenSource`1.xml
index cfcdfa25075..b8edaccd3a2 100644
--- a/xml/Microsoft.Extensions.Options/ConfigurationChangeTokenSource`1.xml
+++ b/xml/Microsoft.Extensions.Options/ConfigurationChangeTokenSource`1.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions" />
diff --git a/xml/Microsoft.Extensions.Options/ConfigureFromConfigurationOptions`1.xml b/xml/Microsoft.Extensions.Options/ConfigureFromConfigurationOptions`1.xml
index 29a0e5aa3eb..67c3b64339b 100644
--- a/xml/Microsoft.Extensions.Options/ConfigureFromConfigurationOptions`1.xml
+++ b/xml/Microsoft.Extensions.Options/ConfigureFromConfigurationOptions`1.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">The type of options to bind.</typeparam>
diff --git a/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`1.xml b/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`1.xml
index 5440e5ed568..ad1a8ddd65a 100644
--- a/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`1.xml
+++ b/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`1.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">Options type being configured.</typeparam>
@@ -67,12 +63,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" />
         <Parameter Name="action" Type="System.Action&lt;TOptions&gt;">
@@ -210,10 +200,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`2.xml b/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`2.xml
index 7746c73d1cb..ae3e44634c0 100644
--- a/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`2.xml
+++ b/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`2.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">Options type being configured.</typeparam>
@@ -242,10 +238,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`3.xml b/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`3.xml
index 9d1a6deef58..c432d2afec4 100644
--- a/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`3.xml
+++ b/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`3.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">Options type being configured.</typeparam>
@@ -274,10 +270,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`4.xml b/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`4.xml
index 27082a8c026..cb3c1bd2d20 100644
--- a/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`4.xml
+++ b/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`4.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">Options type being configured.</typeparam>
@@ -306,10 +302,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`5.xml b/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`5.xml
index b330cf94a8e..141fa696a14 100644
--- a/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`5.xml
+++ b/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`5.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">Options type being configured.</typeparam>
@@ -338,10 +334,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`6.xml b/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`6.xml
index 27345d1f4cf..b8d69d144f8 100644
--- a/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`6.xml
+++ b/xml/Microsoft.Extensions.Options/ConfigureNamedOptions`6.xml
@@ -65,10 +65,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">Options type being configured.</typeparam>
@@ -370,10 +366,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Options/ConfigureOptions`1.xml b/xml/Microsoft.Extensions.Options/ConfigureOptions`1.xml
index 06cdfa448e3..d0d8d8294f3 100644
--- a/xml/Microsoft.Extensions.Options/ConfigureOptions`1.xml
+++ b/xml/Microsoft.Extensions.Options/ConfigureOptions`1.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">Options type being configured.</typeparam>
diff --git a/xml/Microsoft.Extensions.Options/DataAnnotationValidateOptions`1.xml b/xml/Microsoft.Extensions.Options/DataAnnotationValidateOptions`1.xml
index 14005a2a9c7..9f94a23364e 100644
--- a/xml/Microsoft.Extensions.Options/DataAnnotationValidateOptions`1.xml
+++ b/xml/Microsoft.Extensions.Options/DataAnnotationValidateOptions`1.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">The instance being validated.</typeparam>
@@ -134,10 +130,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.UnconditionalSuppressMessage("ReflectionAnalysis", "IL2026:RequiresUnreferencedCode", Justification="Suppressing the warnings on this method since the constructor of the type is annotated as RequiresUnreferencedCode.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.UnconditionalSuppressMessage("ReflectionAnalysis", "IL2026:RequiresUnreferencedCode", Justification="Suppressing the warnings on this method since the constructor of the type is annotated as RequiresUnreferencedCode.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Options.ValidateOptionsResult</ReturnType>
diff --git a/xml/Microsoft.Extensions.Options/IConfigureNamedOptions`1.xml b/xml/Microsoft.Extensions.Options/IConfigureNamedOptions`1.xml
index 69a1836d618..dff55ca8fcf 100644
--- a/xml/Microsoft.Extensions.Options/IConfigureNamedOptions`1.xml
+++ b/xml/Microsoft.Extensions.Options/IConfigureNamedOptions`1.xml
@@ -31,12 +31,6 @@
       <InterfaceName>Microsoft.Extensions.Options.IConfigureOptions&lt;TOptions&gt;</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TOptions">The options type being configured.</typeparam>
     <summary>
diff --git a/xml/Microsoft.Extensions.Options/IConfigureOptions`1.xml b/xml/Microsoft.Extensions.Options/IConfigureOptions`1.xml
index 92aff79c82e..243b2b568ea 100644
--- a/xml/Microsoft.Extensions.Options/IConfigureOptions`1.xml
+++ b/xml/Microsoft.Extensions.Options/IConfigureOptions`1.xml
@@ -29,12 +29,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TOptions">The options type being configured.</typeparam>
     <summary>
diff --git a/xml/Microsoft.Extensions.Options/IOptionsChangeTokenSource`1.xml b/xml/Microsoft.Extensions.Options/IOptionsChangeTokenSource`1.xml
index c9c3e78d1df..5126df20499 100644
--- a/xml/Microsoft.Extensions.Options/IOptionsChangeTokenSource`1.xml
+++ b/xml/Microsoft.Extensions.Options/IOptionsChangeTokenSource`1.xml
@@ -27,12 +27,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TOptions">The options type being changed.</typeparam>
     <summary>
@@ -54,12 +48,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Primitives.IChangeToken</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Options/IOptionsFactory`1.xml b/xml/Microsoft.Extensions.Options/IOptionsFactory`1.xml
index 46230c38eca..0923470352b 100644
--- a/xml/Microsoft.Extensions.Options/IOptionsFactory`1.xml
+++ b/xml/Microsoft.Extensions.Options/IOptionsFactory`1.xml
@@ -32,12 +32,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TOptions">The type of options being requested.</typeparam>
     <summary>
diff --git a/xml/Microsoft.Extensions.Options/IOptionsMonitorCache`1.xml b/xml/Microsoft.Extensions.Options/IOptionsMonitorCache`1.xml
index 9fa61ffd53e..4b910849c48 100644
--- a/xml/Microsoft.Extensions.Options/IOptionsMonitorCache`1.xml
+++ b/xml/Microsoft.Extensions.Options/IOptionsMonitorCache`1.xml
@@ -32,12 +32,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TOptions">The type of options being requested.</typeparam>
     <summary>
@@ -157,12 +151,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Options/IOptionsMonitor`1.xml b/xml/Microsoft.Extensions.Options/IOptionsMonitor`1.xml
index 1859c1e951c..06ca4b789fe 100644
--- a/xml/Microsoft.Extensions.Options/IOptionsMonitor`1.xml
+++ b/xml/Microsoft.Extensions.Options/IOptionsMonitor`1.xml
@@ -38,12 +38,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TOptions">The options type.</typeparam>
     <summary>
@@ -122,12 +116,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IDisposable</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Options/IOptionsSnapshot`1.xml b/xml/Microsoft.Extensions.Options/IOptionsSnapshot`1.xml
index 700a54697b6..ef57d8e2190 100644
--- a/xml/Microsoft.Extensions.Options/IOptionsSnapshot`1.xml
+++ b/xml/Microsoft.Extensions.Options/IOptionsSnapshot`1.xml
@@ -38,12 +38,6 @@
       <InterfaceName>Microsoft.Extensions.Options.IOptions&lt;TOptions&gt;</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TOptions">Options type.</typeparam>
     <summary>
diff --git a/xml/Microsoft.Extensions.Options/IOptions`1.xml b/xml/Microsoft.Extensions.Options/IOptions`1.xml
index 090e9afb052..999196ea50f 100644
--- a/xml/Microsoft.Extensions.Options/IOptions`1.xml
+++ b/xml/Microsoft.Extensions.Options/IOptions`1.xml
@@ -35,12 +35,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TOptions">The type of options being requested.</typeparam>
     <summary>
diff --git a/xml/Microsoft.Extensions.Options/IPostConfigureOptions`1.xml b/xml/Microsoft.Extensions.Options/IPostConfigureOptions`1.xml
index 6e9625672c4..83ef444ab4b 100644
--- a/xml/Microsoft.Extensions.Options/IPostConfigureOptions`1.xml
+++ b/xml/Microsoft.Extensions.Options/IPostConfigureOptions`1.xml
@@ -27,12 +27,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TOptions">Options type being configured.</typeparam>
     <summary>
diff --git a/xml/Microsoft.Extensions.Options/IValidateOptions`1.xml b/xml/Microsoft.Extensions.Options/IValidateOptions`1.xml
index d2abbebc611..490dde7bd6d 100644
--- a/xml/Microsoft.Extensions.Options/IValidateOptions`1.xml
+++ b/xml/Microsoft.Extensions.Options/IValidateOptions`1.xml
@@ -24,12 +24,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TOptions">The options type to validate.</typeparam>
     <summary>
diff --git a/xml/Microsoft.Extensions.Options/NamedConfigureFromConfigurationOptions`1.xml b/xml/Microsoft.Extensions.Options/NamedConfigureFromConfigurationOptions`1.xml
index 709dde88571..0f065bfc058 100644
--- a/xml/Microsoft.Extensions.Options/NamedConfigureFromConfigurationOptions`1.xml
+++ b/xml/Microsoft.Extensions.Options/NamedConfigureFromConfigurationOptions`1.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">The type of options to bind.</typeparam>
diff --git a/xml/Microsoft.Extensions.Options/Options.xml b/xml/Microsoft.Extensions.Options/Options.xml
index 150e2f05e4c..0576e8c4280 100644
--- a/xml/Microsoft.Extensions.Options/Options.xml
+++ b/xml/Microsoft.Extensions.Options/Options.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Options/OptionsBuilder`1.xml b/xml/Microsoft.Extensions.Options/OptionsBuilder`1.xml
index 379d47ff547..8d91b6338bc 100644
--- a/xml/Microsoft.Extensions.Options/OptionsBuilder`1.xml
+++ b/xml/Microsoft.Extensions.Options/OptionsBuilder`1.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">The type of options being requested.</typeparam>
diff --git a/xml/Microsoft.Extensions.Options/OptionsCache`1.xml b/xml/Microsoft.Extensions.Options/OptionsCache`1.xml
index 5eb78393494..28277457352 100644
--- a/xml/Microsoft.Extensions.Options/OptionsCache`1.xml
+++ b/xml/Microsoft.Extensions.Options/OptionsCache`1.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">The type of options being requested.</typeparam>
@@ -198,12 +194,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Options/OptionsFactory`1.xml b/xml/Microsoft.Extensions.Options/OptionsFactory`1.xml
index 6a7834c2451..76f3a9ee848 100644
--- a/xml/Microsoft.Extensions.Options/OptionsFactory`1.xml
+++ b/xml/Microsoft.Extensions.Options/OptionsFactory`1.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">The type of options being requested.</typeparam>
diff --git a/xml/Microsoft.Extensions.Options/OptionsManager`1.xml b/xml/Microsoft.Extensions.Options/OptionsManager`1.xml
index 9e28fa5665a..662253e8c40 100644
--- a/xml/Microsoft.Extensions.Options/OptionsManager`1.xml
+++ b/xml/Microsoft.Extensions.Options/OptionsManager`1.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">Options type.</typeparam>
diff --git a/xml/Microsoft.Extensions.Options/OptionsMonitorExtensions.xml b/xml/Microsoft.Extensions.Options/OptionsMonitorExtensions.xml
index f7f671771fb..76b899e6fb5 100644
--- a/xml/Microsoft.Extensions.Options/OptionsMonitorExtensions.xml
+++ b/xml/Microsoft.Extensions.Options/OptionsMonitorExtensions.xml
@@ -42,12 +42,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IDisposable</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Options/OptionsMonitor`1.xml b/xml/Microsoft.Extensions.Options/OptionsMonitor`1.xml
index b4d6c5d34cd..895cf96fb89 100644
--- a/xml/Microsoft.Extensions.Options/OptionsMonitor`1.xml
+++ b/xml/Microsoft.Extensions.Options/OptionsMonitor`1.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">Options type.</typeparam>
diff --git a/xml/Microsoft.Extensions.Options/OptionsValidationException.xml b/xml/Microsoft.Extensions.Options/OptionsValidationException.xml
index f90c6501b36..0e372751b67 100644
--- a/xml/Microsoft.Extensions.Options/OptionsValidationException.xml
+++ b/xml/Microsoft.Extensions.Options/OptionsValidationException.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Options/OptionsWrapper`1.xml b/xml/Microsoft.Extensions.Options/OptionsWrapper`1.xml
index cd00cd63807..37b33370338 100644
--- a/xml/Microsoft.Extensions.Options/OptionsWrapper`1.xml
+++ b/xml/Microsoft.Extensions.Options/OptionsWrapper`1.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">Options type.</typeparam>
diff --git a/xml/Microsoft.Extensions.Options/PostConfigureOptions`1.xml b/xml/Microsoft.Extensions.Options/PostConfigureOptions`1.xml
index feb0a500903..d6abf64b698 100644
--- a/xml/Microsoft.Extensions.Options/PostConfigureOptions`1.xml
+++ b/xml/Microsoft.Extensions.Options/PostConfigureOptions`1.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">Options type being configured.</typeparam>
@@ -160,12 +156,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Options/PostConfigureOptions`2.xml b/xml/Microsoft.Extensions.Options/PostConfigureOptions`2.xml
index 602bdcaef75..064773fa024 100644
--- a/xml/Microsoft.Extensions.Options/PostConfigureOptions`2.xml
+++ b/xml/Microsoft.Extensions.Options/PostConfigureOptions`2.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">Options type being configured.</typeparam>
@@ -170,10 +166,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Options/PostConfigureOptions`3.xml b/xml/Microsoft.Extensions.Options/PostConfigureOptions`3.xml
index 290365a42e2..3de4ed784d2 100644
--- a/xml/Microsoft.Extensions.Options/PostConfigureOptions`3.xml
+++ b/xml/Microsoft.Extensions.Options/PostConfigureOptions`3.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">Options type being configured.</typeparam>
@@ -202,10 +198,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Options/PostConfigureOptions`4.xml b/xml/Microsoft.Extensions.Options/PostConfigureOptions`4.xml
index 335979328ae..d5ba87b27a5 100644
--- a/xml/Microsoft.Extensions.Options/PostConfigureOptions`4.xml
+++ b/xml/Microsoft.Extensions.Options/PostConfigureOptions`4.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">Options type being configured.</typeparam>
@@ -234,10 +230,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Options/PostConfigureOptions`5.xml b/xml/Microsoft.Extensions.Options/PostConfigureOptions`5.xml
index f8b7b5ffb18..d8a24e9552d 100644
--- a/xml/Microsoft.Extensions.Options/PostConfigureOptions`5.xml
+++ b/xml/Microsoft.Extensions.Options/PostConfigureOptions`5.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">Options type being configured.</typeparam>
@@ -266,10 +262,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Options/PostConfigureOptions`6.xml b/xml/Microsoft.Extensions.Options/PostConfigureOptions`6.xml
index fd4961905b3..93b49f40c95 100644
--- a/xml/Microsoft.Extensions.Options/PostConfigureOptions`6.xml
+++ b/xml/Microsoft.Extensions.Options/PostConfigureOptions`6.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">Options type being configured.</typeparam>
@@ -298,10 +294,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Options/ValidateEnumeratedItemsAttribute.xml b/xml/Microsoft.Extensions.Options/ValidateEnumeratedItemsAttribute.xml
index d5751d4c69e..ae5bf2d8e4a 100644
--- a/xml/Microsoft.Extensions.Options/ValidateEnumeratedItemsAttribute.xml
+++ b/xml/Microsoft.Extensions.Options/ValidateEnumeratedItemsAttribute.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -71,12 +67,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="validator" Type="System.Type" />
       </Parameters>
diff --git a/xml/Microsoft.Extensions.Options/ValidateObjectMembersAttribute.xml b/xml/Microsoft.Extensions.Options/ValidateObjectMembersAttribute.xml
index 530022bcba5..58c6113997e 100644
--- a/xml/Microsoft.Extensions.Options/ValidateObjectMembersAttribute.xml
+++ b/xml/Microsoft.Extensions.Options/ValidateObjectMembersAttribute.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -71,12 +67,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="validator" Type="System.Type" />
       </Parameters>
diff --git a/xml/Microsoft.Extensions.Options/ValidateOptionsResult.xml b/xml/Microsoft.Extensions.Options/ValidateOptionsResult.xml
index 4e7f9e07785..d1e27167628 100644
--- a/xml/Microsoft.Extensions.Options/ValidateOptionsResult.xml
+++ b/xml/Microsoft.Extensions.Options/ValidateOptionsResult.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -179,14 +175,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Options/ValidateOptionsResultBuilder.xml b/xml/Microsoft.Extensions.Options/ValidateOptionsResultBuilder.xml
index cca8579c184..8bd7c6fc25a 100644
--- a/xml/Microsoft.Extensions.Options/ValidateOptionsResultBuilder.xml
+++ b/xml/Microsoft.Extensions.Options/ValidateOptionsResultBuilder.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -130,12 +126,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -163,12 +153,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Options/ValidateOptions`1.xml b/xml/Microsoft.Extensions.Options/ValidateOptions`1.xml
index 5c0db8fb7ec..f24c570653d 100644
--- a/xml/Microsoft.Extensions.Options/ValidateOptions`1.xml
+++ b/xml/Microsoft.Extensions.Options/ValidateOptions`1.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">The options type to validate.</typeparam>
@@ -125,10 +121,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Options/ValidateOptions`2.xml b/xml/Microsoft.Extensions.Options/ValidateOptions`2.xml
index 524d0df43bc..bc5c5dcf3c1 100644
--- a/xml/Microsoft.Extensions.Options/ValidateOptions`2.xml
+++ b/xml/Microsoft.Extensions.Options/ValidateOptions`2.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">The options type to validate.</typeparam>
@@ -159,10 +155,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Options/ValidateOptions`3.xml b/xml/Microsoft.Extensions.Options/ValidateOptions`3.xml
index 876812cf77b..3ba9e888897 100644
--- a/xml/Microsoft.Extensions.Options/ValidateOptions`3.xml
+++ b/xml/Microsoft.Extensions.Options/ValidateOptions`3.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">The options type to validate.</typeparam>
@@ -194,10 +190,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Options/ValidateOptions`4.xml b/xml/Microsoft.Extensions.Options/ValidateOptions`4.xml
index 4bf1e88ba5d..1967fadadd9 100644
--- a/xml/Microsoft.Extensions.Options/ValidateOptions`4.xml
+++ b/xml/Microsoft.Extensions.Options/ValidateOptions`4.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">The options type to validate.</typeparam>
@@ -229,10 +225,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Options/ValidateOptions`5.xml b/xml/Microsoft.Extensions.Options/ValidateOptions`5.xml
index a2f403da32c..1c213d7a0a2 100644
--- a/xml/Microsoft.Extensions.Options/ValidateOptions`5.xml
+++ b/xml/Microsoft.Extensions.Options/ValidateOptions`5.xml
@@ -67,10 +67,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">The options type to validate.</typeparam>
@@ -264,10 +260,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Options/ValidateOptions`6.xml b/xml/Microsoft.Extensions.Options/ValidateOptions`6.xml
index d524eada182..5ff5adaddce 100644
--- a/xml/Microsoft.Extensions.Options/ValidateOptions`6.xml
+++ b/xml/Microsoft.Extensions.Options/ValidateOptions`6.xml
@@ -75,10 +75,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TOptions">The options type to validate.</typeparam>
@@ -299,10 +295,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Primitives/CancellationChangeToken.xml b/xml/Microsoft.Extensions.Primitives/CancellationChangeToken.xml
index e276ff9bfcd..5099efdc119 100644
--- a/xml/Microsoft.Extensions.Primitives/CancellationChangeToken.xml
+++ b/xml/Microsoft.Extensions.Primitives/CancellationChangeToken.xml
@@ -132,12 +132,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IDisposable</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Primitives/ChangeToken.xml b/xml/Microsoft.Extensions.Primitives/ChangeToken.xml
index c7a9372e1e6..d34d5bfe6ed 100644
--- a/xml/Microsoft.Extensions.Primitives/ChangeToken.xml
+++ b/xml/Microsoft.Extensions.Primitives/ChangeToken.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Primitives/CompositeChangeToken.xml b/xml/Microsoft.Extensions.Primitives/CompositeChangeToken.xml
index 2a89a08e37f..25d98f503ae 100644
--- a/xml/Microsoft.Extensions.Primitives/CompositeChangeToken.xml
+++ b/xml/Microsoft.Extensions.Primitives/CompositeChangeToken.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Primitives/Extensions.xml b/xml/Microsoft.Extensions.Primitives/Extensions.xml
index 41e44a97c24..1bb2a451ecb 100644
--- a/xml/Microsoft.Extensions.Primitives/Extensions.xml
+++ b/xml/Microsoft.Extensions.Primitives/Extensions.xml
@@ -42,12 +42,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.StringBuilder</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Primitives/IChangeToken.xml b/xml/Microsoft.Extensions.Primitives/IChangeToken.xml
index a693f9d278d..cdd308f8fd4 100644
--- a/xml/Microsoft.Extensions.Primitives/IChangeToken.xml
+++ b/xml/Microsoft.Extensions.Primitives/IChangeToken.xml
@@ -21,12 +21,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Propagates notifications that a change has occurred.
diff --git a/xml/Microsoft.Extensions.Primitives/InplaceStringBuilder.xml b/xml/Microsoft.Extensions.Primitives/InplaceStringBuilder.xml
index 609be9c10dc..7a6516c2b1e 100644
--- a/xml/Microsoft.Extensions.Primitives/InplaceStringBuilder.xml
+++ b/xml/Microsoft.Extensions.Primitives/InplaceStringBuilder.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Primitives/StringSegment.xml b/xml/Microsoft.Extensions.Primitives/StringSegment.xml
index d3cb53017cf..b14057a4e51 100644
--- a/xml/Microsoft.Extensions.Primitives/StringSegment.xml
+++ b/xml/Microsoft.Extensions.Primitives/StringSegment.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -69,12 +65,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="buffer" Type="System.String" />
       </Parameters>
@@ -136,12 +126,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlyMemory&lt;System.Char&gt;</ReturnType>
       </ReturnValue>
@@ -167,12 +151,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlySpan&lt;System.Char&gt;</ReturnType>
       </ReturnValue>
@@ -198,12 +176,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlySpan&lt;System.Char&gt;</ReturnType>
       </ReturnValue>
@@ -237,12 +209,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlySpan&lt;System.Char&gt;</ReturnType>
       </ReturnValue>
@@ -284,10 +250,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -439,12 +401,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -484,12 +440,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -550,12 +500,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1067,12 +1011,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlyMemory&lt;System.Char&gt;</ReturnType>
       </ReturnValue>
@@ -1099,12 +1037,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlySpan&lt;System.Char&gt;</ReturnType>
       </ReturnValue>
@@ -1131,12 +1063,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Primitives.StringSegment</ReturnType>
       </ReturnValue>
@@ -1502,10 +1428,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Primitives/StringSegmentComparer.xml b/xml/Microsoft.Extensions.Primitives/StringSegmentComparer.xml
index 30415a1e938..d9e75055642 100644
--- a/xml/Microsoft.Extensions.Primitives/StringSegmentComparer.xml
+++ b/xml/Microsoft.Extensions.Primitives/StringSegmentComparer.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.Primitives/StringTokenizer.xml b/xml/Microsoft.Extensions.Primitives/StringTokenizer.xml
index e974460d8e1..1c70d2ee2eb 100644
--- a/xml/Microsoft.Extensions.Primitives/StringTokenizer.xml
+++ b/xml/Microsoft.Extensions.Primitives/StringTokenizer.xml
@@ -57,12 +57,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="value" Type="Microsoft.Extensions.Primitives.StringSegment" />
         <Parameter Name="separators" Type="System.Char[]" />
@@ -89,12 +83,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="value" Type="System.String" />
         <Parameter Name="separators" Type="System.Char[]" />
diff --git a/xml/Microsoft.Extensions.Primitives/StringValues+Enumerator.xml b/xml/Microsoft.Extensions.Primitives/StringValues+Enumerator.xml
index fcb3d13619f..1fde056901c 100644
--- a/xml/Microsoft.Extensions.Primitives/StringValues+Enumerator.xml
+++ b/xml/Microsoft.Extensions.Primitives/StringValues+Enumerator.xml
@@ -35,12 +35,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Enumerates the string values of a <see cref="T:Microsoft.Extensions.Primitives.StringValues" />.
@@ -93,10 +87,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.Extensions.Primitives/StringValues.xml b/xml/Microsoft.Extensions.Primitives/StringValues.xml
index b755a1f567a..f750e298f2f 100644
--- a/xml/Microsoft.Extensions.Primitives/StringValues.xml
+++ b/xml/Microsoft.Extensions.Primitives/StringValues.xml
@@ -78,10 +78,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -1632,12 +1628,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.Time.Testing/FakeTimeProvider.xml b/xml/Microsoft.Extensions.Time.Testing/FakeTimeProvider.xml
index 11581e2878c..4bae8edf75e 100644
--- a/xml/Microsoft.Extensions.Time.Testing/FakeTimeProvider.xml
+++ b/xml/Microsoft.Extensions.Time.Testing/FakeTimeProvider.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.Extensions.WebEncoders.Testing/HtmlTestEncoder.xml b/xml/Microsoft.Extensions.WebEncoders.Testing/HtmlTestEncoder.xml
index 030aee4af8f..24ff05437a1 100644
--- a/xml/Microsoft.Extensions.WebEncoders.Testing/HtmlTestEncoder.xml
+++ b/xml/Microsoft.Extensions.WebEncoders.Testing/HtmlTestEncoder.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -95,12 +89,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -133,12 +121,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.WebEncoders.Testing/JavaScriptTestEncoder.xml b/xml/Microsoft.Extensions.WebEncoders.Testing/JavaScriptTestEncoder.xml
index 46fd479caa0..905a36701d5 100644
--- a/xml/Microsoft.Extensions.WebEncoders.Testing/JavaScriptTestEncoder.xml
+++ b/xml/Microsoft.Extensions.WebEncoders.Testing/JavaScriptTestEncoder.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -95,12 +89,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -133,12 +121,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.WebEncoders.Testing/UrlTestEncoder.xml b/xml/Microsoft.Extensions.WebEncoders.Testing/UrlTestEncoder.xml
index 8f1297eaa15..007bd6ad440 100644
--- a/xml/Microsoft.Extensions.WebEncoders.Testing/UrlTestEncoder.xml
+++ b/xml/Microsoft.Extensions.WebEncoders.Testing/UrlTestEncoder.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -95,12 +89,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -133,12 +121,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.Extensions.WebEncoders/WebEncoderOptions.xml b/xml/Microsoft.Extensions.WebEncoders/WebEncoderOptions.xml
index 7c5cb261e23..0db56e3b88b 100644
--- a/xml/Microsoft.Extensions.WebEncoders/WebEncoderOptions.xml
+++ b/xml/Microsoft.Extensions.WebEncoders/WebEncoderOptions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/BooleanType.xml b/xml/Microsoft.VisualBasic.CompilerServices/BooleanType.xml
index 434967ade3f..7bf5e84e4e5 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/BooleanType.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/BooleanType.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[Microsoft.VisualBasic.CompilerServices.StandardModule]</AttributeName>
       <AttributeName Language="F#">[&lt;Microsoft.VisualBasic.CompilerServices.StandardModule&gt;]</AttributeName>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/ByteType.xml b/xml/Microsoft.VisualBasic.CompilerServices/ByteType.xml
index bb46dcb189f..2216051c86b 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/ByteType.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/ByteType.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[Microsoft.VisualBasic.CompilerServices.StandardModule]</AttributeName>
       <AttributeName Language="F#">[&lt;Microsoft.VisualBasic.CompilerServices.StandardModule&gt;]</AttributeName>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/CharArrayType.xml b/xml/Microsoft.VisualBasic.CompilerServices/CharArrayType.xml
index 60456181855..325335ce3cf 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/CharArrayType.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/CharArrayType.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[Microsoft.VisualBasic.CompilerServices.StandardModule]</AttributeName>
       <AttributeName Language="F#">[&lt;Microsoft.VisualBasic.CompilerServices.StandardModule&gt;]</AttributeName>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/CharType.xml b/xml/Microsoft.VisualBasic.CompilerServices/CharType.xml
index 709bed52a75..60c7bacae78 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/CharType.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/CharType.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[Microsoft.VisualBasic.CompilerServices.StandardModule]</AttributeName>
       <AttributeName Language="F#">[&lt;Microsoft.VisualBasic.CompilerServices.StandardModule&gt;]</AttributeName>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/Conversions.xml b/xml/Microsoft.VisualBasic.CompilerServices/Conversions.xml
index d53e2611e15..d8974e4803f 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/Conversions.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/Conversions.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods that perform various type conversions.</summary>
@@ -141,10 +137,6 @@
           <AttributeName Language="C#">[System.Obsolete("FallbackUserDefinedConversion has been deprecated and is not supported.", true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("FallbackUserDefinedConversion has been deprecated and is not supported.", true)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Diagnostics.DebuggerStepThrough]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerStepThrough&gt;]</AttributeName>
@@ -200,12 +192,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -245,12 +231,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -288,12 +268,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -600,12 +574,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Char[]</ReturnType>
       </ReturnValue>
@@ -651,12 +619,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Char[]</ReturnType>
       </ReturnValue>
@@ -1519,12 +1481,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1562,12 +1518,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1605,12 +1555,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1648,12 +1592,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1692,10 +1630,6 @@
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1739,10 +1673,6 @@
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1785,12 +1715,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1828,12 +1752,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1871,12 +1789,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1953,10 +1865,6 @@
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -2004,10 +1912,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2052,10 +1956,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2096,12 +1996,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -2149,12 +2043,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -2202,12 +2090,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/DateType.xml b/xml/Microsoft.VisualBasic.CompilerServices/DateType.xml
index f784790ce37..d6202187fc2 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/DateType.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/DateType.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[Microsoft.VisualBasic.CompilerServices.StandardModule]</AttributeName>
       <AttributeName Language="F#">[&lt;Microsoft.VisualBasic.CompilerServices.StandardModule&gt;]</AttributeName>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/DecimalType.xml b/xml/Microsoft.VisualBasic.CompilerServices/DecimalType.xml
index fd6e563a3e3..5634d63a3e0 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/DecimalType.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/DecimalType.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[Microsoft.VisualBasic.CompilerServices.StandardModule]</AttributeName>
       <AttributeName Language="F#">[&lt;Microsoft.VisualBasic.CompilerServices.StandardModule&gt;]</AttributeName>
@@ -374,12 +370,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Decimal</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/DoubleType.xml b/xml/Microsoft.VisualBasic.CompilerServices/DoubleType.xml
index 26c3b9b2ac1..386cfaaf347 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/DoubleType.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/DoubleType.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[Microsoft.VisualBasic.CompilerServices.StandardModule]</AttributeName>
       <AttributeName Language="F#">[&lt;Microsoft.VisualBasic.CompilerServices.StandardModule&gt;]</AttributeName>
@@ -344,10 +340,6 @@
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -401,12 +393,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Double</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/IntegerType.xml b/xml/Microsoft.VisualBasic.CompilerServices/IntegerType.xml
index 2061b1d8459..c6478b18c38 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/IntegerType.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/IntegerType.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[Microsoft.VisualBasic.CompilerServices.StandardModule]</AttributeName>
       <AttributeName Language="F#">[&lt;Microsoft.VisualBasic.CompilerServices.StandardModule&gt;]</AttributeName>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/LateBinding.xml b/xml/Microsoft.VisualBasic.CompilerServices/LateBinding.xml
index 2712b401d8d..a909e266017 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/LateBinding.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/LateBinding.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[Microsoft.VisualBasic.CompilerServices.StandardModule]</AttributeName>
       <AttributeName Language="F#">[&lt;Microsoft.VisualBasic.CompilerServices.StandardModule&gt;]</AttributeName>
@@ -326,10 +322,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Late binding is dynamic and cannot be statically analyzed. The referenced types and members may be trimmed")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Late binding is dynamic and cannot be statically analyzed. The referenced types and members may be trimmed")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -405,10 +397,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Late binding is dynamic and cannot be statically analyzed. The referenced types and members may be trimmed")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Late binding is dynamic and cannot be statically analyzed. The referenced types and members may be trimmed")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/LikeOperator.xml b/xml/Microsoft.VisualBasic.CompilerServices/LikeOperator.xml
index 42d15e7d2a6..d9bbf916971 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/LikeOperator.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/LikeOperator.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This class provides helpers that the Visual Basic compiler uses to do the work for the <see href="https://learn.microsoft.com/dotnet/visual-basic/language-reference/operators/like-operator">Like Operator</see>. It is not meant to be called directly from your code.</summary>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/LongType.xml b/xml/Microsoft.VisualBasic.CompilerServices/LongType.xml
index 9e1786c6ae8..5c89ff0a7c6 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/LongType.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/LongType.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[Microsoft.VisualBasic.CompilerServices.StandardModule]</AttributeName>
       <AttributeName Language="F#">[&lt;Microsoft.VisualBasic.CompilerServices.StandardModule&gt;]</AttributeName>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/NewLateBinding.xml b/xml/Microsoft.VisualBasic.CompilerServices/NewLateBinding.xml
index 0cd73e6881c..3fc6b5f6738 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/NewLateBinding.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/NewLateBinding.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This class provides helpers that the Visual Basic compiler uses for late binding calls; it is not meant to be called directly from your code.</summary>
@@ -85,10 +81,6 @@
           <AttributeName Language="C#">[System.Obsolete("FallbackCall has been deprecated and is not supported.", true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("FallbackCall has been deprecated and is not supported.", true)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Diagnostics.DebuggerStepThrough]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerStepThrough&gt;]</AttributeName>
@@ -163,10 +155,6 @@
           <AttributeName Language="C#">[System.Obsolete("FallbackGet has been deprecated and is not supported.", true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("FallbackGet has been deprecated and is not supported.", true)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Diagnostics.DebuggerStepThrough]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerStepThrough&gt;]</AttributeName>
@@ -231,10 +219,6 @@
           <AttributeName Language="C#">[System.Obsolete("FallbackIndexSet has been deprecated and is not supported.", true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("FallbackIndexSet has been deprecated and is not supported.", true)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Diagnostics.DebuggerStepThrough]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerStepThrough&gt;]</AttributeName>
@@ -300,10 +284,6 @@
           <AttributeName Language="C#">[System.Obsolete("FallbackIndexSetComplex has been deprecated and is not supported.", true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("FallbackIndexSetComplex has been deprecated and is not supported.", true)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Diagnostics.DebuggerStepThrough]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerStepThrough&gt;]</AttributeName>
@@ -374,10 +354,6 @@
           <AttributeName Language="C#">[System.Obsolete("FallbackInvokeDefault1 has been deprecated and is not supported.", true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("FallbackInvokeDefault1 has been deprecated and is not supported.", true)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Diagnostics.DebuggerStepThrough]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerStepThrough&gt;]</AttributeName>
@@ -443,10 +419,6 @@
           <AttributeName Language="C#">[System.Obsolete("FallbackInvokeDefault2 has been deprecated and is not supported.", true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("FallbackInvokeDefault2 has been deprecated and is not supported.", true)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Diagnostics.DebuggerStepThrough]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerStepThrough&gt;]</AttributeName>
@@ -511,10 +483,6 @@
           <AttributeName Language="C#">[System.Obsolete("FallbackSet has been deprecated and is not supported.", true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("FallbackSet has been deprecated and is not supported.", true)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Diagnostics.DebuggerStepThrough]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerStepThrough&gt;]</AttributeName>
@@ -576,10 +544,6 @@
           <AttributeName Language="C#">[System.Obsolete("FallbackSetComplex has been deprecated and is not supported.", true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("FallbackSetComplex has been deprecated and is not supported.", true)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Diagnostics.DebuggerStepThrough]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerStepThrough&gt;]</AttributeName>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/ObjectFlowControl+ForLoopControl.xml b/xml/Microsoft.VisualBasic.CompilerServices/ObjectFlowControl+ForLoopControl.xml
index d3d740b2828..9ee10edbdbc 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/ObjectFlowControl+ForLoopControl.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/ObjectFlowControl+ForLoopControl.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides services to the Visual Basic compiler for compiling <see langword="For...Next" /> loops.</summary>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/ObjectFlowControl.xml b/xml/Microsoft.VisualBasic.CompilerServices/ObjectFlowControl.xml
index a7c07a5d1ae..31207b14919 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/ObjectFlowControl.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/ObjectFlowControl.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/ObjectType.xml b/xml/Microsoft.VisualBasic.CompilerServices/ObjectType.xml
index 547ee602aa7..99211c96717 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/ObjectType.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/ObjectType.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This class has been deprecated as of Visual Basic 2005.</summary>
@@ -373,12 +369,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -636,12 +626,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -697,12 +681,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -848,12 +826,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -959,12 +931,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -1022,12 +988,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/Operators.xml b/xml/Microsoft.VisualBasic.CompilerServices/Operators.xml
index 0242d20943a..a6320aac1e4 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/Operators.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/Operators.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides late-bound math operators, such as <see cref="M:Microsoft.VisualBasic.CompilerServices.Operators.AddObject(System.Object,System.Object)" /> and <see cref="M:Microsoft.VisualBasic.CompilerServices.Operators.CompareObject(System.Object,System.Object,System.Boolean)" />, which the Visual Basic compiler uses internally.</summary>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/ProjectData.xml b/xml/Microsoft.VisualBasic.CompilerServices/ProjectData.xml
index 5c2d35ddac8..c961269129e 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/ProjectData.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/ProjectData.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides helpers for the Visual Basic <see langword="Err" /> object.</summary>
@@ -130,12 +126,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Exception</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/ShortType.xml b/xml/Microsoft.VisualBasic.CompilerServices/ShortType.xml
index 14ab1bab213..931d275bad1 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/ShortType.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/ShortType.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[Microsoft.VisualBasic.CompilerServices.StandardModule]</AttributeName>
       <AttributeName Language="F#">[&lt;Microsoft.VisualBasic.CompilerServices.StandardModule&gt;]</AttributeName>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/SingleType.xml b/xml/Microsoft.VisualBasic.CompilerServices/SingleType.xml
index f74c0f4f4cc..09cbf040148 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/SingleType.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/SingleType.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[Microsoft.VisualBasic.CompilerServices.StandardModule]</AttributeName>
       <AttributeName Language="F#">[&lt;Microsoft.VisualBasic.CompilerServices.StandardModule&gt;]</AttributeName>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/StringType.xml b/xml/Microsoft.VisualBasic.CompilerServices/StringType.xml
index 2bcbd1fc8d8..c06f908446d 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/StringType.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/StringType.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[Microsoft.VisualBasic.CompilerServices.StandardModule]</AttributeName>
       <AttributeName Language="F#">[&lt;Microsoft.VisualBasic.CompilerServices.StandardModule&gt;]</AttributeName>
@@ -621,12 +617,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
         <Attributes>
@@ -915,12 +905,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1010,12 +994,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1068,12 +1046,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1126,12 +1098,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/Utils.xml b/xml/Microsoft.VisualBasic.CompilerServices/Utils.xml
index 057d5f6d245..f7be895954a 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/Utils.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/Utils.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[Microsoft.VisualBasic.CompilerServices.StandardModule]</AttributeName>
       <AttributeName Language="F#">[&lt;Microsoft.VisualBasic.CompilerServices.StandardModule&gt;]</AttributeName>
diff --git a/xml/Microsoft.VisualBasic.CompilerServices/Versioned.xml b/xml/Microsoft.VisualBasic.CompilerServices/Versioned.xml
index adde17e3cfc..115836a87df 100644
--- a/xml/Microsoft.VisualBasic.CompilerServices/Versioned.xml
+++ b/xml/Microsoft.VisualBasic.CompilerServices/Versioned.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:Microsoft.VisualBasic.CompilerServices.Versioned" /> module contains procedures used to interact with objects, applications, and systems.</summary>
@@ -222,12 +218,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.VisualBasic.FileIO/FileSystem.xml b/xml/Microsoft.VisualBasic.FileIO/FileSystem.xml
index d10b865edae..efdb405d7dd 100644
--- a/xml/Microsoft.VisualBasic.FileIO/FileSystem.xml
+++ b/xml/Microsoft.VisualBasic.FileIO/FileSystem.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides properties and methods for working with drives, files, and directories.</summary>
diff --git a/xml/Microsoft.VisualBasic.FileIO/MalformedLineException.xml b/xml/Microsoft.VisualBasic.FileIO/MalformedLineException.xml
index 907201be050..4f821448628 100644
--- a/xml/Microsoft.VisualBasic.FileIO/MalformedLineException.xml
+++ b/xml/Microsoft.VisualBasic.FileIO/MalformedLineException.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -205,10 +201,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
@@ -439,10 +431,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -547,12 +535,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.VisualBasic.FileIO/SpecialDirectories.xml b/xml/Microsoft.VisualBasic.FileIO/SpecialDirectories.xml
index 3473d81efe2..c64d0d57292 100644
--- a/xml/Microsoft.VisualBasic.FileIO/SpecialDirectories.xml
+++ b/xml/Microsoft.VisualBasic.FileIO/SpecialDirectories.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides properties for accessing commonly referenced directories.</summary>
diff --git a/xml/Microsoft.VisualBasic.FileIO/TextFieldParser.xml b/xml/Microsoft.VisualBasic.FileIO/TextFieldParser.xml
index ad232d4719c..cb86222f1f1 100644
--- a/xml/Microsoft.VisualBasic.FileIO/TextFieldParser.xml
+++ b/xml/Microsoft.VisualBasic.FileIO/TextFieldParser.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods and properties for parsing structured text files.</summary>
@@ -1021,14 +1017,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1257,12 +1245,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1409,10 +1391,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1479,10 +1457,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1629,10 +1603,6 @@
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/Microsoft.VisualBasic/Collection.xml b/xml/Microsoft.VisualBasic/Collection.xml
index dbc4bf1913f..70b2e494886 100644
--- a/xml/Microsoft.VisualBasic/Collection.xml
+++ b/xml/Microsoft.VisualBasic/Collection.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
@@ -198,12 +194,6 @@ Dim coll As New Microsoft.VisualBasic.Collection()
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -493,10 +483,6 @@ Dim coll As New Microsoft.VisualBasic.Collection()
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/Microsoft.VisualBasic/ComClassAttribute.xml b/xml/Microsoft.VisualBasic/ComClassAttribute.xml
index bc907c54be7..d5469b2ce11 100644
--- a/xml/Microsoft.VisualBasic/ComClassAttribute.xml
+++ b/xml/Microsoft.VisualBasic/ComClassAttribute.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see langword="ComClassAttribute" /> attribute instructs the compiler to add metadata that allows a class to be exposed as a COM object.</summary>
diff --git a/xml/Microsoft.VisualBasic/Constants.xml b/xml/Microsoft.VisualBasic/Constants.xml
index c72542695f9..f158aca6182 100644
--- a/xml/Microsoft.VisualBasic/Constants.xml
+++ b/xml/Microsoft.VisualBasic/Constants.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see langword="Constants" /> module contains miscellaneous constants. These constants can be used anywhere in your code.</summary>
diff --git a/xml/Microsoft.VisualBasic/ControlChars.xml b/xml/Microsoft.VisualBasic/ControlChars.xml
index b7a89ea2f62..5bd0a58a537 100644
--- a/xml/Microsoft.VisualBasic/ControlChars.xml
+++ b/xml/Microsoft.VisualBasic/ControlChars.xml
@@ -31,10 +31,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see langword="ControlChars" /> module contains constants used as control characters. These constants can be used anywhere in your code.</summary>
diff --git a/xml/Microsoft.VisualBasic/Conversion.xml b/xml/Microsoft.VisualBasic/Conversion.xml
index 45e40dd9c29..5c18a4189bd 100644
--- a/xml/Microsoft.VisualBasic/Conversion.xml
+++ b/xml/Microsoft.VisualBasic/Conversion.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see langword="Conversion" /> module contains the procedures used to perform various conversion operations.</summary>
@@ -196,10 +192,6 @@ End Class
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Expression's underlying type cannot be statically analyzed and its members may be trimmed")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Expression's underlying type cannot be statically analyzed and its members may be trimmed")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TargetType</ReturnType>
@@ -2938,12 +2930,6 @@ Dim n = 1.34&
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Double</ReturnType>
       </ReturnValue>
@@ -3038,12 +3024,6 @@ Val("&HFFFF") 
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Double</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.VisualBasic/DateAndTime.xml b/xml/Microsoft.VisualBasic/DateAndTime.xml
index 9fdea78b8b9..0ebc455959f 100644
--- a/xml/Microsoft.VisualBasic/DateAndTime.xml
+++ b/xml/Microsoft.VisualBasic/DateAndTime.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see langword="DateAndTime" /> module contains the procedures and properties used in date and time operations.</summary>
@@ -459,12 +455,6 @@ NextTime = NextTime.AddDays(3.4)  ' Increment by 3 2/5 days.
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.VisualBasic/ErrObject.xml b/xml/Microsoft.VisualBasic/ErrObject.xml
index 2794657b297..0aefa5029cb 100644
--- a/xml/Microsoft.VisualBasic/ErrObject.xml
+++ b/xml/Microsoft.VisualBasic/ErrObject.xml
@@ -31,10 +31,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see langword="ErrObject" /> module contains properties and procedures used to identify and handle run-time errors using the <see langword="Err" /> object.</summary>
@@ -279,12 +275,6 @@ End If
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Exception</ReturnType>
       </ReturnValue>
@@ -557,12 +547,6 @@ End If
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.VisualBasic/FileSystem.xml b/xml/Microsoft.VisualBasic/FileSystem.xml
index 955139a34ea..76d542f22b2 100644
--- a/xml/Microsoft.VisualBasic/FileSystem.xml
+++ b/xml/Microsoft.VisualBasic/FileSystem.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -244,10 +240,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/Microsoft.VisualBasic/Financial.xml b/xml/Microsoft.VisualBasic/Financial.xml
index 224b0873c82..c60d0cdf01d 100644
--- a/xml/Microsoft.VisualBasic/Financial.xml
+++ b/xml/Microsoft.VisualBasic/Financial.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see langword="Financial" /> module contains procedures used to perform financial operations.</summary>
diff --git a/xml/Microsoft.VisualBasic/Information.xml b/xml/Microsoft.VisualBasic/Information.xml
index 131d4fec0aa..5061e50c063 100644
--- a/xml/Microsoft.VisualBasic/Information.xml
+++ b/xml/Microsoft.VisualBasic/Information.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see langword="Information" /> module contains the procedures used to return, test for, or verify information.</summary>
@@ -155,12 +151,6 @@ testVbName = VbTypeName(sysBadName)
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.VisualBasic.ErrObject</ReturnType>
       </ReturnValue>
@@ -671,12 +661,6 @@ testVbName = VbTypeName(sysBadName)
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -954,12 +938,6 @@ Dim a(100, 5, 4) As Byte
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1052,12 +1030,6 @@ Dim a(100, 5, 4) As Byte
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.VisualBasic/Interaction.xml b/xml/Microsoft.VisualBasic/Interaction.xml
index 6379a2ac3bb..5a99d5fd726 100644
--- a/xml/Microsoft.VisualBasic/Interaction.xml
+++ b/xml/Microsoft.VisualBasic/Interaction.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see langword="Interaction" /> module contains procedures used to interact with objects, applications, and systems.</summary>
@@ -306,10 +302,6 @@ procID = Shell("C:\Windows\system32\calc.exe", AppWinStyle.NormalFocus)
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The type of ObjectRef cannot be statically analyzed and its members may be trimmed.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The type of ObjectRef cannot be statically analyzed and its members may be trimmed.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -397,12 +389,6 @@ procID = Shell("C:\Windows\system32\calc.exe", AppWinStyle.NormalFocus)
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -674,10 +660,6 @@ End Sub
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -969,10 +951,6 @@ End Sub
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The COM component to be returned cannot be statically analyzed and may be trimmed")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The COM component to be returned cannot be statically analyzed and may be trimmed")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1195,12 +1173,6 @@ drawObj.SaveAs("C:\Drawings\sample.drw")
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -1699,12 +1671,6 @@ ID = Shell("""C:\Program Files\display.exe"" -a -q", , True, 100000)
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/Microsoft.VisualBasic/MyGroupCollectionAttribute.xml b/xml/Microsoft.VisualBasic/MyGroupCollectionAttribute.xml
index 1ffcd86bbc4..ff67235f24e 100644
--- a/xml/Microsoft.VisualBasic/MyGroupCollectionAttribute.xml
+++ b/xml/Microsoft.VisualBasic/MyGroupCollectionAttribute.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This attribute supports <see langword="My.Forms" /> and <see langword="My.WebServices" /> in Visual Basic.</summary>
diff --git a/xml/Microsoft.VisualBasic/Strings.xml b/xml/Microsoft.VisualBasic/Strings.xml
index 1f84c0c7203..d559c58ffc0 100644
--- a/xml/Microsoft.VisualBasic/Strings.xml
+++ b/xml/Microsoft.VisualBasic/Strings.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see langword="Strings" /> module contains procedures used to perform string operations.</summary>
@@ -514,12 +510,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String[]</ReturnType>
       </ReturnValue>
@@ -606,12 +596,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String[]</ReturnType>
       </ReturnValue>
@@ -698,12 +682,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1323,12 +1301,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1438,12 +1410,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1563,12 +1529,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1689,12 +1649,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1761,12 +1715,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1903,12 +1851,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
         <Attributes>
@@ -2674,10 +2616,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The object's type cannot be statically analyzed and its members may be trimmed")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The object's type cannot be statically analyzed and its members may be trimmed")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2894,12 +2832,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -3332,12 +3264,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -3492,12 +3418,6 @@
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -3843,12 +3763,6 @@ Dim aString As String = Replace(TestString, "o", "i")
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String[]</ReturnType>
       </ReturnValue>
@@ -3944,12 +3858,6 @@ Dim aString As String = Replace(TestString, "o", "i")
         <AssemblyVersion>13.0.0.0</AssemblyVersion>
         <AssemblyVersion>14.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -4031,10 +3939,6 @@ Dim aString As String = Replace(TestString, "o", "i")
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/Microsoft.VisualBasic/VBFixedArrayAttribute.xml b/xml/Microsoft.VisualBasic/VBFixedArrayAttribute.xml
index e161cffa467..6e676576370 100644
--- a/xml/Microsoft.VisualBasic/VBFixedArrayAttribute.xml
+++ b/xml/Microsoft.VisualBasic/VBFixedArrayAttribute.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates that an array in a structure or non-local variable should be treated as a fixed-length array.</summary>
diff --git a/xml/Microsoft.Win32.SafeHandles/SafeAccessTokenHandle.xml b/xml/Microsoft.Win32.SafeHandles/SafeAccessTokenHandle.xml
index 8b056569175..fe10caf2971 100644
--- a/xml/Microsoft.Win32.SafeHandles/SafeAccessTokenHandle.xml
+++ b/xml/Microsoft.Win32.SafeHandles/SafeAccessTokenHandle.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/Microsoft.Win32.SafeHandles/SafeNCryptHandle.xml b/xml/Microsoft.Win32.SafeHandles/SafeNCryptHandle.xml
index faf00fde76c..f37494e56b4 100644
--- a/xml/Microsoft.Win32.SafeHandles/SafeNCryptHandle.xml
+++ b/xml/Microsoft.Win32.SafeHandles/SafeNCryptHandle.xml
@@ -151,10 +151,6 @@ Each open handle object can be thought of as being in one of three states:
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="handle" Type="System.IntPtr" Index="0" FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0" />
diff --git a/xml/Microsoft.Win32.SafeHandles/SafeNCryptKeyHandle.xml b/xml/Microsoft.Win32.SafeHandles/SafeNCryptKeyHandle.xml
index 78dcc25d98e..d1ad8db6d47 100644
--- a/xml/Microsoft.Win32.SafeHandles/SafeNCryptKeyHandle.xml
+++ b/xml/Microsoft.Win32.SafeHandles/SafeNCryptKeyHandle.xml
@@ -142,10 +142,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="handle" Type="System.IntPtr" Index="0" FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0" />
diff --git a/xml/Microsoft.Win32/Registry.xml b/xml/Microsoft.Win32/Registry.xml
index 99e62f37048..52d6cc811fe 100644
--- a/xml/Microsoft.Win32/Registry.xml
+++ b/xml/Microsoft.Win32/Registry.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -278,10 +274,6 @@ The following code example stores values of several data types in an example key
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/Microsoft.Win32/RegistryAclExtensions.xml b/xml/Microsoft.Win32/RegistryAclExtensions.xml
index 80818a9a4ee..c07c9c7ffbf 100644
--- a/xml/Microsoft.Win32/RegistryAclExtensions.xml
+++ b/xml/Microsoft.Win32/RegistryAclExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/Microsoft.Win32/RegistryKey.xml b/xml/Microsoft.Win32/RegistryKey.xml
index cc232ec1639..22bb24f53a7 100644
--- a/xml/Microsoft.Win32/RegistryKey.xml
+++ b/xml/Microsoft.Win32/RegistryKey.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -1552,10 +1548,6 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1639,10 +1631,6 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1728,10 +1716,6 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -1820,10 +1804,6 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/Microsoft.Win32/SystemEvents.xml b/xml/Microsoft.Win32/SystemEvents.xml
index e0bb0214580..59b7cbd3b4e 100644
--- a/xml/Microsoft.Win32/SystemEvents.xml
+++ b/xml/Microsoft.Win32/SystemEvents.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides access to system event notifications. This class cannot be inherited.</summary>
@@ -361,16 +357,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/Polly/HttpResilienceContextExtensions.xml b/xml/Polly/HttpResilienceContextExtensions.xml
index 281a8ee8187..4d1a02c572d 100644
--- a/xml/Polly/HttpResilienceContextExtensions.xml
+++ b/xml/Polly/HttpResilienceContextExtensions.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/Polly/ResilienceContextExtensions.xml b/xml/Polly/ResilienceContextExtensions.xml
index 22ddbb0c427..0aaa310b754 100644
--- a/xml/Polly/ResilienceContextExtensions.xml
+++ b/xml/Polly/ResilienceContextExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.CSharp.json b/xml/SourceLinkInformation/net-7.0/Microsoft.CSharp.json
index 803dd82be65..a44454e2e13 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.CSharp.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.CSharp.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.CSharp",
   "GUID": "D7465CDC42BB0708DE4CF8C0C295FDF0FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Caching.Abstractions.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Caching.Abstractions.json
index 3bf1792847c..c10d8a3734c 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Caching.Abstractions.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Caching.Abstractions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Caching.Abstractions",
   "GUID": "16C75B0A91C34ECBAD7DA30D51CC9276FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Caching.Memory.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Caching.Memory.json
index b639267f086..400b943b7ff 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Caching.Memory.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Caching.Memory.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Caching.Memory",
   "GUID": "E7D97A6B8A9E4D84A0459CC40BC2BB02FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Abstractions.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Abstractions.json
index 2fceeb7027f..921c49e2a1e 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Abstractions.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Abstractions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.Abstractions",
   "GUID": "DA2D202FCC914C3782FD4E88A52351A9FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Binder.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Binder.json
index 04427783298..f494d4aac99 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Binder.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Binder.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.Binder",
   "GUID": "B72EBE3C4EE043449DEDE58183BDC4AAFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.CommandLine.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.CommandLine.json
index 6e6340df1f9..ff9374d4615 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.CommandLine.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.CommandLine.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.CommandLine",
   "GUID": "B88A22D79D744155A939DA5D5BDC49BCFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.EnvironmentVariables.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.EnvironmentVariables.json
index e2911d897d6..1fb0ab42353 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.EnvironmentVariables.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.EnvironmentVariables.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.EnvironmentVariables",
   "GUID": "2B89E2A7CFFD4A54B8344FB6BD1C55DBFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.FileExtensions.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.FileExtensions.json
index 75df1f147a4..28ff2032750 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.FileExtensions.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.FileExtensions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.FileExtensions",
   "GUID": "2CB8E17407BF4BE6A3FFA55FEE26E740FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Ini.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Ini.json
index cf0d3719291..9c14ee1b555 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Ini.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Ini.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.Ini",
   "GUID": "A07767ECDF78465C8CA2DDA92CB45DFDFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Json.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Json.json
index 70b38adf05c..5b5748e0c4e 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Json.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Json.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.Json",
   "GUID": "85C7AEE1E35A46AA91A73492F95B6693FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.UserSecrets.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.UserSecrets.json
index be7ed765fa0..aa84796b0cd 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.UserSecrets.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.UserSecrets.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.UserSecrets",
   "GUID": "8BB9058BD8414F1D8599A7EDCC3F5122FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Xml.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Xml.json
index 9ac618e276a..0c63ff32d7a 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Xml.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.Xml.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.Xml",
   "GUID": "448F950765234196843B44D6510AE727FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.json
index 6623766869f..2c0205e256e 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Configuration.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration",
   "GUID": "8354F3DFEA3B4A48A7AF3BBB2D10CF2EFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.DependencyInjection.Abstractions.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.DependencyInjection.Abstractions.json
index 06f6d17988e..759ec96436e 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.DependencyInjection.Abstractions.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.DependencyInjection.Abstractions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.DependencyInjection.Abstractions",
   "GUID": "18444E3E75AB4308A5FDBF83C08D44FEFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.DependencyInjection.Specification.Tests.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.DependencyInjection.Specification.Tests.json
index 787deeae671..f5ef235ee77 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.DependencyInjection.Specification.Tests.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.DependencyInjection.Specification.Tests.json
@@ -1,7 +1,7 @@
 {
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.DependencyInjection.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.DependencyInjection.json
index 6a8b130d3d9..64ee16c69f4 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.DependencyInjection.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.DependencyInjection.json
@@ -1,7 +1,7 @@
 {
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.DependencyModel.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.DependencyModel.json
index 204070a5255..482eba489b9 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.DependencyModel.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.DependencyModel.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.DependencyModel",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Diagnostics.Abstractions.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Diagnostics.Abstractions.json
index e57866642df..dcc280bbadd 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Diagnostics.Abstractions.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Diagnostics.Abstractions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Diagnostics.Abstractions",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Diagnostics.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Diagnostics.json
index 99639465cd0..0b6c35e88b9 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Diagnostics.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Diagnostics.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Diagnostics",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.FileProviders.Composite.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.FileProviders.Composite.json
index 1df6a3047ee..d877cc0e50a 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.FileProviders.Composite.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.FileProviders.Composite.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.FileProviders.Composite",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.FileProviders.Physical.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.FileProviders.Physical.json
index a4673b63c43..f2a373594db 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.FileProviders.Physical.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.FileProviders.Physical.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.FileProviders.Physical",
   "GUID": "575515377DF9486F9AFE95D1EE0C95B6FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.FileSystemGlobbing.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.FileSystemGlobbing.json
index fbe46554881..f9b68470a05 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.FileSystemGlobbing.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.FileSystemGlobbing.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.FileSystemGlobbing",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Hosting.Abstractions.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Hosting.Abstractions.json
index 65309bab13f..0ac8f9baa84 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Hosting.Abstractions.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Hosting.Abstractions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Hosting.Abstractions",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Hosting.Systemd.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Hosting.Systemd.json
index 5152354d4f5..042620a793d 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Hosting.Systemd.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Hosting.Systemd.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Hosting.Systemd",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Hosting.WindowsServices.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Hosting.WindowsServices.json
index 786479bb313..dd7b9f4052d 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Hosting.WindowsServices.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Hosting.WindowsServices.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Hosting.WindowsServices",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Hosting.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Hosting.json
index 660201c4ff8..4e0883280bc 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Hosting.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Hosting.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Hosting",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Http.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Http.json
index 46f592f070c..95bd524d309 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Http.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Http.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Http",
   "GUID": "B402A98919EA4D62B28048CF8556967CFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.Abstractions.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.Abstractions.json
index ffa1c233d0f..162d0543eb5 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.Abstractions.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.Abstractions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Logging.Abstractions",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.Configuration.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.Configuration.json
index 3d1b8ec4ff2..2e609642e04 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.Configuration.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.Configuration.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Logging.Configuration",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.Console.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.Console.json
index 577b5f892d4..cbe9c0f9f0f 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.Console.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.Console.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Logging.Console",
   "GUID": "0F163CF3937E4585853A779D8C7AF732FFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.Debug.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.Debug.json
index 4480ba3b45a..c560b4b943d 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.Debug.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.Debug.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Logging.Debug",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.EventLog.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.EventLog.json
index 6cd933b36a0..7aeee87d799 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.EventLog.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.EventLog.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Logging.EventLog",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.EventSource.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.EventSource.json
index 85094761e28..0f64ed00cf4 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.EventSource.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.EventSource.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Logging.EventSource",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.TraceSource.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.TraceSource.json
index ad0ccab02a9..4d6a144ad3f 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.TraceSource.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.TraceSource.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.json
index dae6e2d230c..de2466f0c04 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Logging.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Logging",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Options.ConfigurationExtensions.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Options.ConfigurationExtensions.json
index 2cc1a726e7e..1709ca87a91 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Options.ConfigurationExtensions.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Options.ConfigurationExtensions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Options.ConfigurationExtensions",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Options.DataAnnotations.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Options.DataAnnotations.json
index 4575cf03164..b624e0359f7 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Options.DataAnnotations.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Options.DataAnnotations.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Options.DataAnnotations",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Options.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Options.json
index 0886b4396e9..9cf9779edf7 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Options.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Options.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Primitives.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Primitives.json
index 0f498b84f95..75f9a7f3103 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Primitives.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Extensions.Primitives.json
@@ -1,7 +1,7 @@
 {
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   "GUID": "BBCEC3ACDEF94CC68CA8BD234A7A445FFFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.VisualBasic.Core.json b/xml/SourceLinkInformation/net-7.0/Microsoft.VisualBasic.Core.json
index 6bdee3097a5..a5944963dff 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.VisualBasic.Core.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.VisualBasic.Core.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.VisualBasic.Core",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Win32.Registry.AccessControl.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Win32.Registry.AccessControl.json
index b00ff2a9187..3de83bcc15b 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Win32.Registry.AccessControl.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Win32.Registry.AccessControl.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Win32.Registry.AccessControl",
   "GUID": "08D37DA0C6094D6C88DA5B45372CB51AFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Win32.Registry.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Win32.Registry.json
index 6bd29b4c383..0d9d36c783d 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Win32.Registry.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Win32.Registry.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Win32.Registry",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/Microsoft.Win32.SystemEvents.json b/xml/SourceLinkInformation/net-7.0/Microsoft.Win32.SystemEvents.json
index b73cf05dcf0..1e5ad2afb2b 100644
--- a/xml/SourceLinkInformation/net-7.0/Microsoft.Win32.SystemEvents.json
+++ b/xml/SourceLinkInformation/net-7.0/Microsoft.Win32.SystemEvents.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.CodeDom.json b/xml/SourceLinkInformation/net-7.0/System.CodeDom.json
index efe564bf4fc..d2c29efb3e8 100644
--- a/xml/SourceLinkInformation/net-7.0/System.CodeDom.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Collections.Concurrent.json b/xml/SourceLinkInformation/net-7.0/System.Collections.Concurrent.json
index c70aaaa8571..602abc52e7f 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Collections.Concurrent.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Collections.Concurrent.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Collections.Immutable.json b/xml/SourceLinkInformation/net-7.0/System.Collections.Immutable.json
index e8a3af19ce5..56f47f84c55 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Collections.Immutable.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Collections.NonGeneric.json b/xml/SourceLinkInformation/net-7.0/System.Collections.NonGeneric.json
index fda30e74fbe..4d2754c08af 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Collections.NonGeneric.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Collections.Specialized.json b/xml/SourceLinkInformation/net-7.0/System.Collections.Specialized.json
index e3937fca119..b672068e366 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Collections.Specialized.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Collections.json b/xml/SourceLinkInformation/net-7.0/System.Collections.json
index 494997352fa..54e6432ffc6 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Collections.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.ComponentModel.Annotations.json b/xml/SourceLinkInformation/net-7.0/System.ComponentModel.Annotations.json
index 45ac12bc9d8..6783c1f586d 100644
--- a/xml/SourceLinkInformation/net-7.0/System.ComponentModel.Annotations.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.ComponentModel.Composition.Registration.json b/xml/SourceLinkInformation/net-7.0/System.ComponentModel.Composition.Registration.json
index 1a6a799255f..6ae8dd0b7ae 100644
--- a/xml/SourceLinkInformation/net-7.0/System.ComponentModel.Composition.Registration.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.ComponentModel.Composition.json b/xml/SourceLinkInformation/net-7.0/System.ComponentModel.Composition.json
index 3993c01d3e2..a0ac25bc398 100644
--- a/xml/SourceLinkInformation/net-7.0/System.ComponentModel.Composition.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.ComponentModel.EventBasedAsync.json b/xml/SourceLinkInformation/net-7.0/System.ComponentModel.EventBasedAsync.json
index 86f01c8739c..faedfb72e60 100644
--- a/xml/SourceLinkInformation/net-7.0/System.ComponentModel.EventBasedAsync.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.ComponentModel.Primitives.json b/xml/SourceLinkInformation/net-7.0/System.ComponentModel.Primitives.json
index 661b429b109..5db31925321 100644
--- a/xml/SourceLinkInformation/net-7.0/System.ComponentModel.Primitives.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.ComponentModel.TypeConverter.json b/xml/SourceLinkInformation/net-7.0/System.ComponentModel.TypeConverter.json
index 44c3f84d027..f946f7d24d4 100644
--- a/xml/SourceLinkInformation/net-7.0/System.ComponentModel.TypeConverter.json
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 {
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index 883d7e3f653..52afd8f475f 100644
--- a/xml/SourceLinkInformation/net-7.0/System.ComponentModel.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Composition.AttributedModel.json b/xml/SourceLinkInformation/net-7.0/System.Composition.AttributedModel.json
index 8761c84cd1c..338ff1584b3 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Composition.AttributedModel.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Composition.Convention.json b/xml/SourceLinkInformation/net-7.0/System.Composition.Convention.json
index 5e17d72e4d6..fc81a16e210 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Composition.Convention.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Composition.Hosting.json b/xml/SourceLinkInformation/net-7.0/System.Composition.Hosting.json
index 4646630246a..4939290e6be 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Composition.Hosting.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Composition.Runtime.json b/xml/SourceLinkInformation/net-7.0/System.Composition.Runtime.json
index d1fbcd04989..2333ebd7278 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Composition.Runtime.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Composition.TypedParts.json b/xml/SourceLinkInformation/net-7.0/System.Composition.TypedParts.json
index 5a60cff1679..813c2789fc0 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Composition.TypedParts.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Composition.TypedParts.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Configuration.ConfigurationManager.json b/xml/SourceLinkInformation/net-7.0/System.Configuration.ConfigurationManager.json
index adb7962f316..5b22c6f3a3f 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Configuration.ConfigurationManager.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Console.json b/xml/SourceLinkInformation/net-7.0/System.Console.json
index a2493392f26..bf7a3d01327 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Console.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Console.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Data.Common.json b/xml/SourceLinkInformation/net-7.0/System.Data.Common.json
index 35e23867514..0872acff08a 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Data.Common.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Data.Common.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Data.Odbc.json b/xml/SourceLinkInformation/net-7.0/System.Data.Odbc.json
index a16e7fca69c..32276bd2746 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Data.Odbc.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Data.OleDb.json b/xml/SourceLinkInformation/net-7.0/System.Data.OleDb.json
index 71620eff409..fc58cac901a 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Data.OleDb.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Diagnostics.DiagnosticSource.json b/xml/SourceLinkInformation/net-7.0/System.Diagnostics.DiagnosticSource.json
index e2a41812c5d..70f6cc04a7f 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Diagnostics.DiagnosticSource.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Diagnostics.EventLog.json b/xml/SourceLinkInformation/net-7.0/System.Diagnostics.EventLog.json
index 70c2108a245..a177b29b83c 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Diagnostics.EventLog.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Diagnostics.FileVersionInfo.json b/xml/SourceLinkInformation/net-7.0/System.Diagnostics.FileVersionInfo.json
index 14367fd50fb..bf8facbb50b 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Diagnostics.FileVersionInfo.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Diagnostics.PerformanceCounter.json b/xml/SourceLinkInformation/net-7.0/System.Diagnostics.PerformanceCounter.json
index d0aa9e94d30..c8a338bdfc1 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Diagnostics.PerformanceCounter.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Diagnostics.Process.json b/xml/SourceLinkInformation/net-7.0/System.Diagnostics.Process.json
index df3d683072e..2cbaf1ddc05 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Diagnostics.Process.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Diagnostics.Process.json
@@ -1,7 +1,7 @@
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Diagnostics.StackTrace.json b/xml/SourceLinkInformation/net-7.0/System.Diagnostics.StackTrace.json
index 547dc51a380..a4a4e53d3bc 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Diagnostics.StackTrace.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Diagnostics.StackTrace.json
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 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Diagnostics.TextWriterTraceListener.json b/xml/SourceLinkInformation/net-7.0/System.Diagnostics.TextWriterTraceListener.json
index e892fbc6355..ed6784e01f3 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Diagnostics.TextWriterTraceListener.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Diagnostics.TextWriterTraceListener.json
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 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Diagnostics.TraceSource.json b/xml/SourceLinkInformation/net-7.0/System.Diagnostics.TraceSource.json
index e71085b363d..75f44b0deb3 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Diagnostics.TraceSource.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Diagnostics.TraceSource.json
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 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.DirectoryServices.AccountManagement.json b/xml/SourceLinkInformation/net-7.0/System.DirectoryServices.AccountManagement.json
index e509dd8181e..f8106f41b44 100644
--- a/xml/SourceLinkInformation/net-7.0/System.DirectoryServices.AccountManagement.json
+++ b/xml/SourceLinkInformation/net-7.0/System.DirectoryServices.AccountManagement.json
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 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.DirectoryServices.Protocols.json b/xml/SourceLinkInformation/net-7.0/System.DirectoryServices.Protocols.json
index 883ebd7e117..ac6476f2148 100644
--- a/xml/SourceLinkInformation/net-7.0/System.DirectoryServices.Protocols.json
+++ b/xml/SourceLinkInformation/net-7.0/System.DirectoryServices.Protocols.json
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 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.DirectoryServices.json b/xml/SourceLinkInformation/net-7.0/System.DirectoryServices.json
index 6973cb6011b..d1413d4d397 100644
--- a/xml/SourceLinkInformation/net-7.0/System.DirectoryServices.json
+++ b/xml/SourceLinkInformation/net-7.0/System.DirectoryServices.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Drawing.Common.json b/xml/SourceLinkInformation/net-7.0/System.Drawing.Common.json
index 6345b7446be..88189f322a7 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Drawing.Common.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Drawing.Common.json
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 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Drawing.Primitives.json b/xml/SourceLinkInformation/net-7.0/System.Drawing.Primitives.json
index 55110d8f838..82426460aec 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Drawing.Primitives.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Drawing.Primitives.json
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 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Formats.Asn1.json b/xml/SourceLinkInformation/net-7.0/System.Formats.Asn1.json
index 199f17b2926..4a5cf0a97fd 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Formats.Asn1.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Formats.Asn1.json
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 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Formats.Cbor.json b/xml/SourceLinkInformation/net-7.0/System.Formats.Cbor.json
index c9aa302916c..1091e21a55d 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Formats.Cbor.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Formats.Cbor.json
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 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Formats.Tar.json b/xml/SourceLinkInformation/net-7.0/System.Formats.Tar.json
index 18a29d21fae..5bebd76a8dc 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Formats.Tar.json
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 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.IO.Compression.Brotli.json b/xml/SourceLinkInformation/net-7.0/System.IO.Compression.Brotli.json
index db55e62b160..b3eadb193f2 100644
--- a/xml/SourceLinkInformation/net-7.0/System.IO.Compression.Brotli.json
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diff --git a/xml/SourceLinkInformation/net-7.0/System.IO.Compression.ZipFile.json b/xml/SourceLinkInformation/net-7.0/System.IO.Compression.ZipFile.json
index c48061b9c17..22a653f7931 100644
--- a/xml/SourceLinkInformation/net-7.0/System.IO.Compression.ZipFile.json
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 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.IO.Compression.json b/xml/SourceLinkInformation/net-7.0/System.IO.Compression.json
index 1ad054c4d8a..17daf2bde58 100644
--- a/xml/SourceLinkInformation/net-7.0/System.IO.Compression.json
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 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.IO.FileSystem.DriveInfo.json b/xml/SourceLinkInformation/net-7.0/System.IO.FileSystem.DriveInfo.json
index f125c2dfa07..9852a6fde3f 100644
--- a/xml/SourceLinkInformation/net-7.0/System.IO.FileSystem.DriveInfo.json
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 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.IO.FileSystem.Watcher.json b/xml/SourceLinkInformation/net-7.0/System.IO.FileSystem.Watcher.json
index fba47c27543..445a17fce1c 100644
--- a/xml/SourceLinkInformation/net-7.0/System.IO.FileSystem.Watcher.json
+++ b/xml/SourceLinkInformation/net-7.0/System.IO.FileSystem.Watcher.json
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 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.IO.Hashing.json b/xml/SourceLinkInformation/net-7.0/System.IO.Hashing.json
index b0d3af4ef00..8d0a8ed6db4 100644
--- a/xml/SourceLinkInformation/net-7.0/System.IO.Hashing.json
+++ b/xml/SourceLinkInformation/net-7.0/System.IO.Hashing.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.IO.IsolatedStorage.json b/xml/SourceLinkInformation/net-7.0/System.IO.IsolatedStorage.json
index d4f64140ee9..a2420bb861c 100644
--- a/xml/SourceLinkInformation/net-7.0/System.IO.IsolatedStorage.json
+++ b/xml/SourceLinkInformation/net-7.0/System.IO.IsolatedStorage.json
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 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.IO.MemoryMappedFiles.json b/xml/SourceLinkInformation/net-7.0/System.IO.MemoryMappedFiles.json
index 8294a495300..f3c3b49ed49 100644
--- a/xml/SourceLinkInformation/net-7.0/System.IO.MemoryMappedFiles.json
+++ b/xml/SourceLinkInformation/net-7.0/System.IO.MemoryMappedFiles.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.IO.Packaging.json b/xml/SourceLinkInformation/net-7.0/System.IO.Packaging.json
index 75a92e86bf1..91d9c6ca953 100644
--- a/xml/SourceLinkInformation/net-7.0/System.IO.Packaging.json
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@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.IO.Pipelines.json b/xml/SourceLinkInformation/net-7.0/System.IO.Pipelines.json
index 337b60e5e46..9eb10a53442 100644
--- a/xml/SourceLinkInformation/net-7.0/System.IO.Pipelines.json
+++ b/xml/SourceLinkInformation/net-7.0/System.IO.Pipelines.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.IO.Pipes.json b/xml/SourceLinkInformation/net-7.0/System.IO.Pipes.json
index b1a2c95d9cd..ff72624363f 100644
--- a/xml/SourceLinkInformation/net-7.0/System.IO.Pipes.json
+++ b/xml/SourceLinkInformation/net-7.0/System.IO.Pipes.json
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 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.IO.Ports.json b/xml/SourceLinkInformation/net-7.0/System.IO.Ports.json
index 866a86e630a..687699adcd0 100644
--- a/xml/SourceLinkInformation/net-7.0/System.IO.Ports.json
+++ b/xml/SourceLinkInformation/net-7.0/System.IO.Ports.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Linq.Expressions.json b/xml/SourceLinkInformation/net-7.0/System.Linq.Expressions.json
index 2b0c7e17de2..7026aae70ba 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Linq.Expressions.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Linq.Expressions.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Linq.Parallel.json b/xml/SourceLinkInformation/net-7.0/System.Linq.Parallel.json
index d6727757eef..a0c54924af5 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Linq.Parallel.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Linq.Parallel.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Linq.Queryable.json b/xml/SourceLinkInformation/net-7.0/System.Linq.Queryable.json
index 4ca6336c2d4..c19fb4291d6 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Linq.Queryable.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Linq.Queryable.json
@@ -1,7 +1,7 @@
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Linq.json b/xml/SourceLinkInformation/net-7.0/System.Linq.json
index 7481eb999be..52170bb6a86 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Linq.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Linq.json
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 {
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Management.json b/xml/SourceLinkInformation/net-7.0/System.Management.json
index ebd2ef3f9d3..7dcf80187f4 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Management.json
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@@ -1,7 +1,7 @@
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Memory.Data.json b/xml/SourceLinkInformation/net-7.0/System.Memory.Data.json
index afcbd673c59..0f543b49e2a 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Memory.Data.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Memory.Data.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Memory.Data",
   "GUID": "4FF20A40F638422397584D01348F571DFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Memory.json b/xml/SourceLinkInformation/net-7.0/System.Memory.json
index 46d45e5ec12..d9a45a908c6 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Memory.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Memory.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Memory",
   "GUID": "5BB3A8AA2BAB21A6D83117C92CA9F7DBFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Net.Http.Json.json b/xml/SourceLinkInformation/net-7.0/System.Net.Http.Json.json
index 495a87869ce..38bbeafff49 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Net.Http.Json.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Net.Http.Json.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Http.Json",
   "GUID": "7D50F853A431A738518DADC2B9AFFFD0FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Net.Http.WinHttpHandler.json b/xml/SourceLinkInformation/net-7.0/System.Net.Http.WinHttpHandler.json
index 33bccbe02bf..ac9f8026233 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Net.Http.WinHttpHandler.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Net.Http.WinHttpHandler.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Http.WinHttpHandler",
   "GUID": "C9E6A308644143398C295E1831DE5A1CFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Net.Http.json b/xml/SourceLinkInformation/net-7.0/System.Net.Http.json
index f4ae906f461..0b088a4cbb9 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Net.Http.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Net.Http.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Http",
   "GUID": "38FA8B917B0E3D853AE77D52A34C484AFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Net.HttpListener.json b/xml/SourceLinkInformation/net-7.0/System.Net.HttpListener.json
index b961a57a75d..4d7640a22d8 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Net.HttpListener.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Net.HttpListener.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.HttpListener",
   "GUID": "51896C7E7213B8DD602509E7DA219829FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Net.Mail.json b/xml/SourceLinkInformation/net-7.0/System.Net.Mail.json
index 397c2fcd7b9..e18c08325ec 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Net.Mail.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Net.Mail.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Mail",
   "GUID": "2BBE599F58CADAAB44C7F1117AFE5CAFFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Net.NameResolution.json b/xml/SourceLinkInformation/net-7.0/System.Net.NameResolution.json
index 0dcc639c64b..b9c7057ea06 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Net.NameResolution.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Net.NameResolution.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.NameResolution",
   "GUID": "D0B0DC95EE55360DD869631F98824F27FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Net.NetworkInformation.json b/xml/SourceLinkInformation/net-7.0/System.Net.NetworkInformation.json
index aa8086d77c5..aa2f4d17498 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Net.NetworkInformation.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Net.NetworkInformation.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.NetworkInformation",
   "GUID": "C213FDBE197C6D5544F4F9D97F3D5CCFFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Net.Ping.json b/xml/SourceLinkInformation/net-7.0/System.Net.Ping.json
index 756ee92bc78..338eadbfb85 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Net.Ping.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Net.Ping.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Ping",
   "GUID": "32230F33275FA9DFBD3B759E73C45404FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Net.Primitives.json b/xml/SourceLinkInformation/net-7.0/System.Net.Primitives.json
index d1a65e28e80..574a88ea8a6 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Net.Primitives.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Net.Primitives.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Primitives",
   "GUID": "C424B70D9930886E364E25279E1B9BF6FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Net.Quic.json b/xml/SourceLinkInformation/net-7.0/System.Net.Quic.json
index 1b8e73b9581..23132c63ab4 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Net.Quic.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Net.Quic.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Quic",
   "GUID": "018A8F8DB3983A133581CCC55200298EFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Net.Requests.json b/xml/SourceLinkInformation/net-7.0/System.Net.Requests.json
index b81722937c3..f97ba6ba3ea 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Net.Requests.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Net.Requests.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Requests",
   "GUID": "9EB378E3AE89E20E2756AA0DF653679BFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Net.Security.json b/xml/SourceLinkInformation/net-7.0/System.Net.Security.json
index 9d10e041e27..31c08c0aa75 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Net.Security.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Net.Security.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Security",
   "GUID": "661F3575E5C30F4989820F8CBD7000FCFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Net.ServicePoint.json b/xml/SourceLinkInformation/net-7.0/System.Net.ServicePoint.json
index 91af65991a6..bb32f8ede61 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Net.ServicePoint.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Net.ServicePoint.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.ServicePoint",
   "GUID": "AA0E63E295250CA6695386F5244AEA9FFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Net.Sockets.json b/xml/SourceLinkInformation/net-7.0/System.Net.Sockets.json
index b164e11700d..4719a329827 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Net.Sockets.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Net.Sockets.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Sockets",
   "GUID": "7F4E4CFC5800D04A454364E059E91A2DFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Net.WebClient.json b/xml/SourceLinkInformation/net-7.0/System.Net.WebClient.json
index 4a53e3984cc..b3392d567d4 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Net.WebClient.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Net.WebClient.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.WebClient",
   "GUID": "400777804192C0B83B0F808FB0C27C58FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Net.WebHeaderCollection.json b/xml/SourceLinkInformation/net-7.0/System.Net.WebHeaderCollection.json
index 403319559be..57f72d74b3f 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Net.WebHeaderCollection.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Net.WebHeaderCollection.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.WebHeaderCollection",
   "GUID": "06D4C7A5EE9DBD334A1A0374D4D6B320FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Net.WebProxy.json b/xml/SourceLinkInformation/net-7.0/System.Net.WebProxy.json
index ea79ae560c1..7807a09c54f 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Net.WebProxy.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Net.WebProxy.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.WebProxy",
   "GUID": "2994131051BD343C0760802C20469161FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Net.WebSockets.Client.json b/xml/SourceLinkInformation/net-7.0/System.Net.WebSockets.Client.json
index dc9f1182d55..58a38089090 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Net.WebSockets.Client.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Net.WebSockets.Client.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.WebSockets.Client",
   "GUID": "A44CA3257FC5647EEC74DD533FFC35AFFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Net.WebSockets.json b/xml/SourceLinkInformation/net-7.0/System.Net.WebSockets.json
index ab260d4341d..347687a61e9 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Net.WebSockets.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Net.WebSockets.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.WebSockets",
   "GUID": "E599FBB82A88EBC86E00A2EB57A543F2FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Numerics.Tensors.json b/xml/SourceLinkInformation/net-7.0/System.Numerics.Tensors.json
index b846783073b..bd9a15746a2 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Numerics.Tensors.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Numerics.Tensors.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Numerics.Tensors",
   "GUID": "624A3CD6A94D4D5E8E5B326F3620720FFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-7.0/System.ObjectModel.json b/xml/SourceLinkInformation/net-7.0/System.ObjectModel.json
index fbb3e14b601..5afb2e4fa75 100644
--- a/xml/SourceLinkInformation/net-7.0/System.ObjectModel.json
+++ b/xml/SourceLinkInformation/net-7.0/System.ObjectModel.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.ObjectModel",
   "GUID": "CB664A3DF2E23AAB60081C66F7CF79DBFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Private.CoreLib.json b/xml/SourceLinkInformation/net-7.0/System.Private.CoreLib.json
index 6b19ff3a136..603a33a0f0e 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Private.CoreLib.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Private.CoreLib.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Private.CoreLib",
   "GUID": "E7C3E833A271EB9E0FDC2D59B4C891F9FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Private.DataContractSerialization.json b/xml/SourceLinkInformation/net-7.0/System.Private.DataContractSerialization.json
index 0939786720a..f9a6193789c 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Private.DataContractSerialization.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Private.DataContractSerialization.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Private.DataContractSerialization",
   "GUID": "8D8DB0AEF08A43318B7771E89BF8F6ABFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Private.Uri.json b/xml/SourceLinkInformation/net-7.0/System.Private.Uri.json
index bda41ac48fb..a21b45ca4a8 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Private.Uri.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Private.Uri.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Private.Uri",
   "GUID": "17A4FD4E12519C36A2E4E16795C6E584FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Private.Xml.Linq.json b/xml/SourceLinkInformation/net-7.0/System.Private.Xml.Linq.json
index 37535b0221f..130e86c29c5 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Private.Xml.Linq.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Private.Xml.Linq.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Private.Xml.Linq",
   "GUID": "9D5F067EBB37102026D96FC20000014EFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Private.Xml.json b/xml/SourceLinkInformation/net-7.0/System.Private.Xml.json
index 7e8322f4edc..e294bcfc8ea 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Private.Xml.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Private.Xml.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Private.Xml",
   "GUID": "71B571F2E1A938FFD69C200C2C38A7C3FFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Reflection.Context.json b/xml/SourceLinkInformation/net-7.0/System.Reflection.Context.json
index fe1f0fa8e76..d6b9495eb6a 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Reflection.Context.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Reflection.Context.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Reflection.DispatchProxy.json b/xml/SourceLinkInformation/net-7.0/System.Reflection.DispatchProxy.json
index b3b844d814c..c8b3bff854f 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Reflection.DispatchProxy.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Reflection.DispatchProxy.json
@@ -1,7 +1,7 @@
 {
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Reflection.Metadata.json b/xml/SourceLinkInformation/net-7.0/System.Reflection.Metadata.json
index fa6d35f4b1c..a0eb50b0824 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Reflection.Metadata.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Reflection.Metadata.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Reflection.MetadataLoadContext.json b/xml/SourceLinkInformation/net-7.0/System.Reflection.MetadataLoadContext.json
index 71020b313ae..229063e13a8 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Reflection.MetadataLoadContext.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Reflection.MetadataLoadContext.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Reflection.TypeExtensions.json b/xml/SourceLinkInformation/net-7.0/System.Reflection.TypeExtensions.json
index 0ee11a06329..cce8d230096 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Reflection.TypeExtensions.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Reflection.TypeExtensions.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Resources.Extensions.json b/xml/SourceLinkInformation/net-7.0/System.Resources.Extensions.json
index 79862b496a7..dab0bed30e4 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Resources.Extensions.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Resources.Extensions.json
@@ -1,7 +1,7 @@
 {
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   "GUID": "55FC70A0A3BB454D81B2FCD81681500CFFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Resources.Writer.json b/xml/SourceLinkInformation/net-7.0/System.Resources.Writer.json
index 1b344198edb..d14d22c9bae 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Resources.Writer.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Resources.Writer.json
@@ -1,7 +1,7 @@
 {
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Runtime.Caching.json b/xml/SourceLinkInformation/net-7.0/System.Runtime.Caching.json
index e802081ab4e..b0ae650db04 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Runtime.Caching.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Runtime.Caching.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Runtime.Caching",
   "GUID": "A3F438B6A0B64AFDAF4FD5DE7336A5FAFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Runtime.CompilerServices.VisualC.json b/xml/SourceLinkInformation/net-7.0/System.Runtime.CompilerServices.VisualC.json
index fee2704a779..cb55fee87d5 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Runtime.CompilerServices.VisualC.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Runtime.CompilerServices.VisualC.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Runtime.CompilerServices.VisualC",
   "GUID": "2D7F2B83F19BE88C8385B5638F8CB242FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Runtime.InteropServices.json b/xml/SourceLinkInformation/net-7.0/System.Runtime.InteropServices.json
index 4f8469920e6..d38395cb8f7 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Runtime.InteropServices.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Runtime.InteropServices.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Runtime.InteropServices",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Runtime.Numerics.json b/xml/SourceLinkInformation/net-7.0/System.Runtime.Numerics.json
index 61f414bde4e..c7d8cb6a6fe 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Runtime.Numerics.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Runtime.Numerics.json
@@ -1,7 +1,7 @@
 {
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Runtime.Serialization.Formatters.json b/xml/SourceLinkInformation/net-7.0/System.Runtime.Serialization.Formatters.json
index 172c7a85067..a930c2e63f6 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Runtime.Serialization.Formatters.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Runtime.Serialization.Formatters.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Runtime.Serialization.Primitives.json b/xml/SourceLinkInformation/net-7.0/System.Runtime.Serialization.Primitives.json
index 8de12d91b05..a6883c47f75 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Runtime.Serialization.Primitives.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Runtime.Serialization.Primitives.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Runtime.Serialization.Schema.json b/xml/SourceLinkInformation/net-7.0/System.Runtime.Serialization.Schema.json
index ea056672fe7..e9639c25a06 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Runtime.Serialization.Schema.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Runtime.Serialization.Schema.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Security.Claims.json b/xml/SourceLinkInformation/net-7.0/System.Security.Claims.json
index 18d94ae0cb1..0e05868b94d 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Security.Claims.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Security.Claims.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Security.Claims",
   "GUID": "BA976E42DA3359929D1C78DAB949EE3EFFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.Cose.json b/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.Cose.json
index 5a2fcebed42..69b341ab2d2 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.Cose.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.Cose.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Security.Cryptography.Cose",
   "GUID": "90C4B9EC203A4A65BC93C1F7B2692905FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.Pkcs.json b/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.Pkcs.json
index ef688587d0e..079e73326bf 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.Pkcs.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.Pkcs.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Security.Cryptography.Pkcs",
   "GUID": "C5F1E75B8ED1432FA1134388393550DCFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.ProtectedData.json b/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.ProtectedData.json
index ef08c92f4c9..67d24178d59 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.ProtectedData.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.ProtectedData.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Security.Cryptography.ProtectedData",
   "GUID": "7D20B1E8CFD34EDDB13E2468A6C3EAF2FFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.Xml.json b/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.Xml.json
index f1de59a5ece..01136a9728c 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.Xml.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.Xml.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Security.Cryptography.Xml",
   "GUID": "F7DED059FC044D44B0CED5768DE3FDA1FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.json b/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.json
index 8387384ba98..d0406528508 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Security.Cryptography.json
@@ -1,7 +1,7 @@
 {
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Security.Permissions.json b/xml/SourceLinkInformation/net-7.0/System.Security.Permissions.json
index a07dde33de2..5dd84ed70c5 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Security.Permissions.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Security.Permissions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Security.Permissions",
   "GUID": "8C4137E58DE94C74BBD34F2217967BCAFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.ServiceModel.Syndication.json b/xml/SourceLinkInformation/net-7.0/System.ServiceModel.Syndication.json
index 7fc72bf7e7f..4dddd08bba5 100644
--- a/xml/SourceLinkInformation/net-7.0/System.ServiceModel.Syndication.json
+++ b/xml/SourceLinkInformation/net-7.0/System.ServiceModel.Syndication.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.ServiceModel.Syndication",
   "GUID": "589338B20E404847ADCDF66CFE0628B4FFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.ServiceProcess.ServiceController.json b/xml/SourceLinkInformation/net-7.0/System.ServiceProcess.ServiceController.json
index f6f70bd0ebd..e5d3ca84d2c 100644
--- a/xml/SourceLinkInformation/net-7.0/System.ServiceProcess.ServiceController.json
+++ b/xml/SourceLinkInformation/net-7.0/System.ServiceProcess.ServiceController.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.ServiceProcess.ServiceController",
   "GUID": "6D4064A4208246CEB80D40712B84F25EFFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Speech.json b/xml/SourceLinkInformation/net-7.0/System.Speech.json
index ead2571396d..86d8d3583b8 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Speech.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Speech.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Speech",
   "GUID": "CB4F99122EF2484D94E045B6B2AF8692FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Text.Encoding.CodePages.json b/xml/SourceLinkInformation/net-7.0/System.Text.Encoding.CodePages.json
index 376765b1ac7..628f47f74f0 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Text.Encoding.CodePages.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Text.Encoding.CodePages.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Text.Encoding.CodePages",
   "GUID": "49335361D3B6BBED21BA006B7180B639FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Text.Encodings.Web.json b/xml/SourceLinkInformation/net-7.0/System.Text.Encodings.Web.json
index 43e63636418..d7fee7cb95c 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Text.Encodings.Web.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Text.Encodings.Web.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Text.Encodings.Web",
   "GUID": "51941F5DE7498F206D0A78D8FD757A7BFFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Text.Json.json b/xml/SourceLinkInformation/net-7.0/System.Text.Json.json
index 9b524b425ce..d4605ce5035 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Text.Json.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Text.Json.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Text.Json",
   "GUID": "C6D17D15B816D4F49B2D90FBB2AA7452FFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Text.RegularExpressions.json b/xml/SourceLinkInformation/net-7.0/System.Text.RegularExpressions.json
index 46bd60a1a27..8234ed447c8 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Text.RegularExpressions.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Text.RegularExpressions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Text.RegularExpressions",
   "GUID": "6679428AE6C890AE6C4CD42535766CACFFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Threading.AccessControl.json b/xml/SourceLinkInformation/net-7.0/System.Threading.AccessControl.json
index 23851001bc1..fa6c7394925 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Threading.AccessControl.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Threading.AccessControl.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Threading.AccessControl",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Threading.Channels.json b/xml/SourceLinkInformation/net-7.0/System.Threading.Channels.json
index 61ea4b87de9..1bddafce493 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Threading.Channels.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Threading.Channels.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Threading.Channels",
   "GUID": "1D3C1084E3AC8A3477C3BDA700CA36EEFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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       "Members": [
diff --git a/xml/SourceLinkInformation/net-7.0/System.Threading.Tasks.Dataflow.json b/xml/SourceLinkInformation/net-7.0/System.Threading.Tasks.Dataflow.json
index 7d7f31a90ce..d20f1e51a74 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Threading.Tasks.Dataflow.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Threading.Tasks.Dataflow.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Threading.Tasks.Dataflow",
   "GUID": "8FDE5C110B0694F2E4904BCB492D3EDDFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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       "Members": [
diff --git a/xml/SourceLinkInformation/net-7.0/System.Threading.Tasks.Parallel.json b/xml/SourceLinkInformation/net-7.0/System.Threading.Tasks.Parallel.json
index 01996faeb7c..986c8480ad2 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Threading.Tasks.Parallel.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Threading.Tasks.Parallel.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Threading.Tasks.Parallel",
   "GUID": "C4B8A32A2288EE973DA800662D5F3110FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Threading.json b/xml/SourceLinkInformation/net-7.0/System.Threading.json
index 72e5bb17788..5edeaafe901 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Threading.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Threading.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Threading",
   "GUID": "2F83862C8A8AE7C2AF9184FD499DCAE9FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Transactions.Local.json b/xml/SourceLinkInformation/net-7.0/System.Transactions.Local.json
index dd8b49e67c7..a8d0fcdf4ba 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Transactions.Local.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Transactions.Local.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Transactions.Local",
   "GUID": "12A69266833357A9433691318E5CB388FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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       "Members": [
diff --git a/xml/SourceLinkInformation/net-7.0/System.Web.HttpUtility.json b/xml/SourceLinkInformation/net-7.0/System.Web.HttpUtility.json
index b0181771fbc..33a8e11eb64 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Web.HttpUtility.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Web.HttpUtility.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Web.HttpUtility",
   "GUID": "3E565650F8529F1D781E945561B17985FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Windows.Extensions.json b/xml/SourceLinkInformation/net-7.0/System.Windows.Extensions.json
index e596939a59f..db4371c1a92 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Windows.Extensions.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Windows.Extensions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Windows.Extensions",
   "GUID": "B070B7D93A5C45B4B0E893E462CC4580FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-7.0/System.Xml.XPath.XDocument.json b/xml/SourceLinkInformation/net-7.0/System.Xml.XPath.XDocument.json
index a0310596cb4..4e578fe30cf 100644
--- a/xml/SourceLinkInformation/net-7.0/System.Xml.XPath.XDocument.json
+++ b/xml/SourceLinkInformation/net-7.0/System.Xml.XPath.XDocument.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Xml.XPath.XDocument",
   "GUID": "74D32559E13F9AC047AD67FC724722C2FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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       "Members": [
diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Bcl.Cryptography.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Bcl.Cryptography.json
index 00dba80b145..6ec39d4b780 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Bcl.Cryptography.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Bcl.Cryptography.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Bcl.Cryptography",
   "GUID": "821062F5C8D04421A913902383FCD97DFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Bcl.TimeProvider.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Bcl.TimeProvider.json
index 25d6fb394ad..595bb1d14ad 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Bcl.TimeProvider.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Bcl.TimeProvider.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Bcl.TimeProvider",
   "GUID": "2147FD97A2464DC58A6725A647D8B1B2FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.CSharp.json b/xml/SourceLinkInformation/net-8.0/Microsoft.CSharp.json
index ba1d7a8094d..3c1679ae450 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.CSharp.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.CSharp.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.CSharp",
   "GUID": "816879B29C2FF8662A3202D9CFB15556FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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       "Members": [
diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Caching.Abstractions.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Caching.Abstractions.json
index e328ac9cdb0..35d5ba43ef9 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Caching.Abstractions.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Caching.Abstractions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Caching.Abstractions",
   "GUID": "07A7FFDD337549CFBC1E11E4D381EE34FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Caching.Memory.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Caching.Memory.json
index 6b931164ee6..f624ae1ad85 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Caching.Memory.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Caching.Memory.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Caching.Memory",
   "GUID": "8213763E11804054A2AC13B1D7A6CC45FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Caching.SqlServer.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Caching.SqlServer.json
index 5a5ba76bcdb..d8bc56f8dcf 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Caching.SqlServer.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Caching.SqlServer.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Caching.SqlServer",
   "GUID": "37210CE9E0164A50AF616E42BF618E3EFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Caching.StackExchangeRedis.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Caching.StackExchangeRedis.json
index 7fb25733fdc..ddb435b3bf9 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Caching.StackExchangeRedis.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Caching.StackExchangeRedis.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Caching.StackExchangeRedis",
   "GUID": "88D2363668324068B32C602A59531ADBFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Abstractions.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Abstractions.json
index e39b93a3d2e..b05ad1efd56 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Abstractions.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Abstractions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.Abstractions",
   "GUID": "4830F112EB834F45BB41D75B8ACFDD90FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Binder.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Binder.json
index d95de11e3aa..5db8c364d6c 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Binder.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Binder.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.Binder",
   "GUID": "47E613C0A10C4A619BB436E5C8104AA0FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.CommandLine.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.CommandLine.json
index 920f0671de3..bd94e021316 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.CommandLine.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.CommandLine.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.CommandLine",
   "GUID": "B8F19F3BD6CB4BBD86C82E9E55F11A82FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.EnvironmentVariables.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.EnvironmentVariables.json
index 00cf0327f24..e1de9d2d3aa 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.EnvironmentVariables.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.EnvironmentVariables.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.EnvironmentVariables",
   "GUID": "6DFD81599BBB4DBBB53DA8B9AF6BD612FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.FileExtensions.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.FileExtensions.json
index cd6d3f2ce17..ca72b082d5d 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.FileExtensions.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.FileExtensions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.FileExtensions",
   "GUID": "7602C99D9A614F079AF9D6759A8EB45EFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Ini.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Ini.json
index f39071c5df2..87675907f10 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Ini.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Ini.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.Ini",
   "GUID": "949DC0EF15B341A689CA14F9C3E6B1ECFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Json.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Json.json
index bfb58a37b2e..3d5ccb8fa2f 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Json.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Json.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.Json",
   "GUID": "D705533FF6CE415EBD741EC81D39BE7AFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.KeyPerFile.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.KeyPerFile.json
index 3014704529f..95e21f16394 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.KeyPerFile.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.KeyPerFile.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.KeyPerFile",
   "GUID": "7B1AE43932154FCAB0D3A122323A792FFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.UserSecrets.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.UserSecrets.json
index e7ca8f9c7a9..ea20dad07fc 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.UserSecrets.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.UserSecrets.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.UserSecrets",
   "GUID": "06BC6BD0764847FAAFA2E3395D2594E7FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Xml.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Xml.json
index dce37c4252b..a5f7fa1438f 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Xml.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.Xml.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.Xml",
   "GUID": "8798989570F8436F9F2615D7BC1ED110FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.json
index bb59bd6c6c7..4c6874b8576 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Configuration.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration",
   "GUID": "4952E919312740EE9A839221C6673D67FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.DependencyInjection.Abstractions.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.DependencyInjection.Abstractions.json
index 18318f68827..2f7ce9062a1 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.DependencyInjection.Abstractions.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.DependencyInjection.Abstractions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.DependencyInjection.Abstractions",
   "GUID": "D4E5B5B5B7EF4325AD822888EEA69805FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.DependencyInjection.Specification.Tests.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.DependencyInjection.Specification.Tests.json
index 0c89ed76f65..965203ecffe 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.DependencyInjection.Specification.Tests.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.DependencyInjection.Specification.Tests.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.DependencyInjection.Specification.Tests",
   "GUID": "04CA651DF93B4A00853D2E684BF8E529FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.DependencyInjection.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.DependencyInjection.json
index 7182604e420..ec048031b82 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.DependencyInjection.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.DependencyInjection.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.DependencyModel.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.DependencyModel.json
index 3523873611e..cef76f32288 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.DependencyModel.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.DependencyModel.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.Abstractions.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.Abstractions.json
index 919f8f521fd..f72680f0e6b 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.Abstractions.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.Abstractions.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions.json
index df4eb8cd290..b92ba1ff77d 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.HealthChecks.EntityFrameworkCore.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.HealthChecks.EntityFrameworkCore.json
index 605d2c5afbc..a555471fec0 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.HealthChecks.EntityFrameworkCore.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.HealthChecks.EntityFrameworkCore.json
@@ -1,7 +1,7 @@
 {
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.HealthChecks.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.HealthChecks.json
index e933b5fa1cb..d4d2f5275b4 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.HealthChecks.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.HealthChecks.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.json
index c43005cc0a6..564460b410c 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Diagnostics.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Diagnostics",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileProviders.Abstractions.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileProviders.Abstractions.json
index 214d2f12b53..493f9e88f77 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileProviders.Abstractions.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileProviders.Abstractions.json
@@ -1,7 +1,7 @@
 {
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileProviders.Composite.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileProviders.Composite.json
index db30e8b550c..8e80ae4ba9f 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileProviders.Composite.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileProviders.Composite.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileProviders.Embedded.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileProviders.Embedded.json
index a1d65b246a7..b2abe9ac492 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileProviders.Embedded.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileProviders.Embedded.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.FileProviders.Embedded",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileProviders.Physical.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileProviders.Physical.json
index a18cac654fd..0feef15dc65 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileProviders.Physical.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileProviders.Physical.json
@@ -1,7 +1,7 @@
 {
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileSystemGlobbing.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileSystemGlobbing.json
index a09d01a2324..2b040e51dd0 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileSystemGlobbing.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.FileSystemGlobbing.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.FileSystemGlobbing",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Hosting.Abstractions.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Hosting.Abstractions.json
index eaffb35ba73..b04fa74984c 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Hosting.Abstractions.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Hosting.Abstractions.json
@@ -1,7 +1,7 @@
 {
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Hosting.Systemd.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Hosting.Systemd.json
index e8e71de25aa..8ef7cf9cf37 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Hosting.Systemd.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Hosting.Systemd.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Hosting.Systemd",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Hosting.WindowsServices.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Hosting.WindowsServices.json
index 7935c4826d9..237caa85173 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Hosting.WindowsServices.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Hosting.WindowsServices.json
@@ -1,7 +1,7 @@
 {
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Hosting.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Hosting.json
index 039b7d1ae84..7cfb1669075 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Hosting.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Hosting.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Http.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Http.json
index e55b9a19cab..fb6dfdcc08f 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Http.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Http.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Localization.Abstractions.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Localization.Abstractions.json
index 1bc20434f89..8cc1928347c 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Localization.Abstractions.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Localization.Abstractions.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Localization.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Localization.json
index dd3ce6cedc5..a879aa51400 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Localization.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Localization.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.Abstractions.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.Abstractions.json
index bdd12bda0b6..0f33637957e 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.Abstractions.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.Abstractions.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.AzureAppServices.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.AzureAppServices.json
index 495eb74eeaa..0261f0be46c 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.AzureAppServices.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.AzureAppServices.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Logging.AzureAppServices",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.Configuration.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.Configuration.json
index 5119c457067..294ef59f967 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.Configuration.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.Configuration.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.Console.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.Console.json
index 15f18c9fd21..6e6a712965d 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.Console.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.Console.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.Debug.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.Debug.json
index 00b30b08aeb..39de2deffe2 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.Debug.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.Debug.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.EventLog.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.EventLog.json
index ebebf57a428..0389d4a360e 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.EventLog.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.EventLog.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.EventSource.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.EventSource.json
index 2350d55cec2..db82d2327ad 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.EventSource.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.EventSource.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.TraceSource.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.TraceSource.json
index dae2d0c9697..fc2650b4b7b 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.TraceSource.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.TraceSource.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.json
index 2f2cd399e2b..c70eb2e2404 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Logging.json
@@ -1,7 +1,7 @@
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.ObjectPool.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.ObjectPool.json
index 20431bdce49..5537cc6fa07 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.ObjectPool.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.ObjectPool.json
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 {
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Options.ConfigurationExtensions.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Options.ConfigurationExtensions.json
index 77862263fcf..9d853b35ec3 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Options.ConfigurationExtensions.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Options.ConfigurationExtensions.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Options.DataAnnotations.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Options.DataAnnotations.json
index bc6074c86f9..7931acd23c2 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Options.DataAnnotations.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Options.DataAnnotations.json
@@ -1,7 +1,7 @@
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Options.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Options.json
index da0ee45dd1c..acbc12d1c57 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Options.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Options.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Primitives.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Primitives.json
index 5929e10d343..6a879a0975d 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Primitives.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.Primitives.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.WebEncoders.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.WebEncoders.json
index 8f2c5b9a44b..1e14f76a495 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.WebEncoders.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Extensions.WebEncoders.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.VisualBasic.Core.json b/xml/SourceLinkInformation/net-8.0/Microsoft.VisualBasic.Core.json
index 3fd36399f8f..5b653ef7627 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.VisualBasic.Core.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.VisualBasic.Core.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Win32.Registry.AccessControl.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Win32.Registry.AccessControl.json
index b5bbf972b1a..3c4d6fc05b7 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Win32.Registry.AccessControl.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Win32.Registry.AccessControl.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Win32.Registry.AccessControl",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/Microsoft.Win32.SystemEvents.json b/xml/SourceLinkInformation/net-8.0/Microsoft.Win32.SystemEvents.json
index 33638d32546..9146037ef5e 100644
--- a/xml/SourceLinkInformation/net-8.0/Microsoft.Win32.SystemEvents.json
+++ b/xml/SourceLinkInformation/net-8.0/Microsoft.Win32.SystemEvents.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-8.0/System.CodeDom.json b/xml/SourceLinkInformation/net-8.0/System.CodeDom.json
index 9634d886c52..9d659c52718 100644
--- a/xml/SourceLinkInformation/net-8.0/System.CodeDom.json
+++ b/xml/SourceLinkInformation/net-8.0/System.CodeDom.json
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 {
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Collections.Concurrent.json b/xml/SourceLinkInformation/net-8.0/System.Collections.Concurrent.json
index d2f9b57dd19..1cd0883f1e5 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Collections.Concurrent.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Collections.Concurrent.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Collections.Immutable.json b/xml/SourceLinkInformation/net-8.0/System.Collections.Immutable.json
index 9e83b7ac333..4eb2939e56e 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Collections.Immutable.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Collections.Immutable.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Collections.NonGeneric.json b/xml/SourceLinkInformation/net-8.0/System.Collections.NonGeneric.json
index 3ecaff7985d..a01b314b17f 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Collections.NonGeneric.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Collections.NonGeneric.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Collections.Specialized.json b/xml/SourceLinkInformation/net-8.0/System.Collections.Specialized.json
index 09fdc6d92e9..5b2f0fa501f 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Collections.Specialized.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Collections.Specialized.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Collections.json b/xml/SourceLinkInformation/net-8.0/System.Collections.json
index a95cdec4fae..d694792de1d 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Collections.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Collections.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-8.0/System.ComponentModel.Annotations.json b/xml/SourceLinkInformation/net-8.0/System.ComponentModel.Annotations.json
index cd314152463..4a0ba3a8ba2 100644
--- a/xml/SourceLinkInformation/net-8.0/System.ComponentModel.Annotations.json
+++ b/xml/SourceLinkInformation/net-8.0/System.ComponentModel.Annotations.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-8.0/System.ComponentModel.Composition.Registration.json b/xml/SourceLinkInformation/net-8.0/System.ComponentModel.Composition.Registration.json
index 580382224d6..651d6b1499d 100644
--- a/xml/SourceLinkInformation/net-8.0/System.ComponentModel.Composition.Registration.json
+++ b/xml/SourceLinkInformation/net-8.0/System.ComponentModel.Composition.Registration.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.ComponentModel.Composition.json b/xml/SourceLinkInformation/net-8.0/System.ComponentModel.Composition.json
index de9c2dd5cd9..4f26b47cccd 100644
--- a/xml/SourceLinkInformation/net-8.0/System.ComponentModel.Composition.json
+++ b/xml/SourceLinkInformation/net-8.0/System.ComponentModel.Composition.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.ComponentModel.EventBasedAsync.json b/xml/SourceLinkInformation/net-8.0/System.ComponentModel.EventBasedAsync.json
index 892c683c9b2..5a667bd451b 100644
--- a/xml/SourceLinkInformation/net-8.0/System.ComponentModel.EventBasedAsync.json
+++ b/xml/SourceLinkInformation/net-8.0/System.ComponentModel.EventBasedAsync.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.ComponentModel.Primitives.json b/xml/SourceLinkInformation/net-8.0/System.ComponentModel.Primitives.json
index d15a97840b9..1c140767911 100644
--- a/xml/SourceLinkInformation/net-8.0/System.ComponentModel.Primitives.json
+++ b/xml/SourceLinkInformation/net-8.0/System.ComponentModel.Primitives.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-8.0/System.ComponentModel.TypeConverter.json b/xml/SourceLinkInformation/net-8.0/System.ComponentModel.TypeConverter.json
index c218d9f4895..256c576035a 100644
--- a/xml/SourceLinkInformation/net-8.0/System.ComponentModel.TypeConverter.json
+++ b/xml/SourceLinkInformation/net-8.0/System.ComponentModel.TypeConverter.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-8.0/System.ComponentModel.json b/xml/SourceLinkInformation/net-8.0/System.ComponentModel.json
index c59028c34a0..9464ae32b9b 100644
--- a/xml/SourceLinkInformation/net-8.0/System.ComponentModel.json
+++ b/xml/SourceLinkInformation/net-8.0/System.ComponentModel.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Composition.AttributedModel.json b/xml/SourceLinkInformation/net-8.0/System.Composition.AttributedModel.json
index 51be515affb..1dbf15e4290 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Composition.AttributedModel.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Composition.AttributedModel.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Composition.Convention.json b/xml/SourceLinkInformation/net-8.0/System.Composition.Convention.json
index 97a384e7caf..0bfb2d05688 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Composition.Convention.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Composition.Convention.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Composition.Hosting.json b/xml/SourceLinkInformation/net-8.0/System.Composition.Hosting.json
index 8ea93c23cb2..b1ed5aa0fb1 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Composition.Hosting.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Composition.Hosting.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Composition.Runtime.json b/xml/SourceLinkInformation/net-8.0/System.Composition.Runtime.json
index 124bd031998..b187c3de9b0 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Composition.Runtime.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Composition.Runtime.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Composition.TypedParts.json b/xml/SourceLinkInformation/net-8.0/System.Composition.TypedParts.json
index 52c78a5b275..8ca155cd21e 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Composition.TypedParts.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Composition.TypedParts.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Configuration.ConfigurationManager.json b/xml/SourceLinkInformation/net-8.0/System.Configuration.ConfigurationManager.json
index c011605ec73..a275d44b4c7 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Configuration.ConfigurationManager.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Configuration.ConfigurationManager.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Console.json b/xml/SourceLinkInformation/net-8.0/System.Console.json
index ea6e9ca8cbc..3a3419795e0 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Console.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Console.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Console",
   "GUID": "76F0D4AD69BE696A97E8768E3C979AC6FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Data.Common.json b/xml/SourceLinkInformation/net-8.0/System.Data.Common.json
index 59b8465f1a4..f0e7daf46fd 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Data.Common.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Data.Common.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Data.Common",
   "GUID": "F1F76EB01AE72CE6FA9EADC16D16205BFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Data.Odbc.json b/xml/SourceLinkInformation/net-8.0/System.Data.Odbc.json
index 1c2a92045b6..a3e8f1e7f29 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Data.Odbc.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Data.Odbc.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Data.Odbc",
   "GUID": "89F76C88519C43DEA0F09AACAA94187FFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Data.OleDb.json b/xml/SourceLinkInformation/net-8.0/System.Data.OleDb.json
index 91742ca1e7c..cc9bbe3e7c9 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Data.OleDb.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Data.OleDb.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Data.OleDb",
   "GUID": "39E26BB54E364B19B5D21261BAA58034FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Diagnostics.DiagnosticSource.json b/xml/SourceLinkInformation/net-8.0/System.Diagnostics.DiagnosticSource.json
index 01dc6d90531..8c240bb5928 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Diagnostics.DiagnosticSource.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Diagnostics.DiagnosticSource.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Diagnostics.DiagnosticSource",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Diagnostics.EventLog.json b/xml/SourceLinkInformation/net-8.0/System.Diagnostics.EventLog.json
index d8e6b4b46d4..9d90bb00b81 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Diagnostics.EventLog.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Diagnostics.EventLog.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Diagnostics.EventLog",
   "GUID": "A8663C134AD24CA8A30598D3F3AA8054FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Diagnostics.FileVersionInfo.json b/xml/SourceLinkInformation/net-8.0/System.Diagnostics.FileVersionInfo.json
index 56a34c71036..f4835599772 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Diagnostics.FileVersionInfo.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Diagnostics.FileVersionInfo.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Diagnostics.FileVersionInfo",
   "GUID": "B16A5A625125F286711F3DB81B37B31BFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Diagnostics.PerformanceCounter.json b/xml/SourceLinkInformation/net-8.0/System.Diagnostics.PerformanceCounter.json
index db97795aece..711c1e2d044 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Diagnostics.PerformanceCounter.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Diagnostics.PerformanceCounter.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Diagnostics.PerformanceCounter",
   "GUID": "E30F0D67D99946618F10F5D2EC78DB44FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Diagnostics.Process.json b/xml/SourceLinkInformation/net-8.0/System.Diagnostics.Process.json
index 259558e4323..8234188d435 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Diagnostics.Process.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Diagnostics.Process.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Diagnostics.Process",
   "GUID": "5E4F3338BE9AF31BCA18F98762B04163FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Diagnostics.StackTrace.json b/xml/SourceLinkInformation/net-8.0/System.Diagnostics.StackTrace.json
index d3f78ae19a2..724eb7229af 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Diagnostics.StackTrace.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Diagnostics.StackTrace.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Diagnostics.StackTrace",
   "GUID": "4CE64A6334A591F449E7EBD14605A6BFFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Diagnostics.TextWriterTraceListener.json b/xml/SourceLinkInformation/net-8.0/System.Diagnostics.TextWriterTraceListener.json
index c095e820ccb..d3a011297a0 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Diagnostics.TextWriterTraceListener.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Diagnostics.TextWriterTraceListener.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Diagnostics.TextWriterTraceListener",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Diagnostics.TraceSource.json b/xml/SourceLinkInformation/net-8.0/System.Diagnostics.TraceSource.json
index d5575a9546b..91153f4df50 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Diagnostics.TraceSource.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Diagnostics.TraceSource.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.DirectoryServices.AccountManagement.json b/xml/SourceLinkInformation/net-8.0/System.DirectoryServices.AccountManagement.json
index ab72c93937e..7aa65859039 100644
--- a/xml/SourceLinkInformation/net-8.0/System.DirectoryServices.AccountManagement.json
+++ b/xml/SourceLinkInformation/net-8.0/System.DirectoryServices.AccountManagement.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.DirectoryServices.AccountManagement",
   "GUID": "D310AE0FB45E42C4BF792AE2FD5E91D1FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.DirectoryServices.Protocols.json b/xml/SourceLinkInformation/net-8.0/System.DirectoryServices.Protocols.json
index 0eb23cc74b5..3395229139e 100644
--- a/xml/SourceLinkInformation/net-8.0/System.DirectoryServices.Protocols.json
+++ b/xml/SourceLinkInformation/net-8.0/System.DirectoryServices.Protocols.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.DirectoryServices.Protocols",
   "GUID": "7D394F11B07D4B74A62E604A4E749F68FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.DirectoryServices.json b/xml/SourceLinkInformation/net-8.0/System.DirectoryServices.json
index ff04b029e32..f178e24f3c8 100644
--- a/xml/SourceLinkInformation/net-8.0/System.DirectoryServices.json
+++ b/xml/SourceLinkInformation/net-8.0/System.DirectoryServices.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.DirectoryServices",
   "GUID": "348F4CB0C4F14F6AAD68034CC9F8363FFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Drawing.Common.json b/xml/SourceLinkInformation/net-8.0/System.Drawing.Common.json
index fe21e29cec9..8c8b1544adf 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Drawing.Common.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Drawing.Common.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Drawing.Common",
   "GUID": "BB97605472D74FC9A6BC755282F84B2CFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Drawing.Primitives.json b/xml/SourceLinkInformation/net-8.0/System.Drawing.Primitives.json
index 77766a824cc..63314ae337b 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Drawing.Primitives.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Drawing.Primitives.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Drawing.Primitives",
   "GUID": "8D1907F39913C958E0A49536E88627FAFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Formats.Asn1.json b/xml/SourceLinkInformation/net-8.0/System.Formats.Asn1.json
index b3833334adc..369bd6a1f4d 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Formats.Asn1.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Formats.Asn1.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Formats.Asn1",
   "GUID": "7D048DF5899D7B2094A30A03B3A189EEFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Formats.Cbor.json b/xml/SourceLinkInformation/net-8.0/System.Formats.Cbor.json
index 882c35e8c71..7d90b34fe09 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Formats.Cbor.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Formats.Cbor.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Formats.Cbor",
   "GUID": "4048BCB38BB644C1A29FE666C2B3781DFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Formats.Nrbf.json b/xml/SourceLinkInformation/net-8.0/System.Formats.Nrbf.json
index 0a12aa7801e..611eca33d0f 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Formats.Nrbf.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Formats.Nrbf.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Formats.Nrbf",
   "GUID": "BB7A48744C4E493F8E62FFAF9DF90679FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Formats.Tar.json b/xml/SourceLinkInformation/net-8.0/System.Formats.Tar.json
index 896c36f166c..ac56854cb19 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Formats.Tar.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Formats.Tar.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Formats.Tar",
   "GUID": "F8CD98D715F8FE498EF0D39D19325BCCFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.IO.Compression.Brotli.json b/xml/SourceLinkInformation/net-8.0/System.IO.Compression.Brotli.json
index e75453c88cc..ba1c270fe38 100644
--- a/xml/SourceLinkInformation/net-8.0/System.IO.Compression.Brotli.json
+++ b/xml/SourceLinkInformation/net-8.0/System.IO.Compression.Brotli.json
@@ -1,7 +1,7 @@
 {
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.IO.Compression.ZipFile.json b/xml/SourceLinkInformation/net-8.0/System.IO.Compression.ZipFile.json
index 7e60c15d0ce..44dca31d91e 100644
--- a/xml/SourceLinkInformation/net-8.0/System.IO.Compression.ZipFile.json
+++ b/xml/SourceLinkInformation/net-8.0/System.IO.Compression.ZipFile.json
@@ -1,7 +1,7 @@
 {
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.IO.Compression.json b/xml/SourceLinkInformation/net-8.0/System.IO.Compression.json
index ae027b55b12..dc6b4f12ca7 100644
--- a/xml/SourceLinkInformation/net-8.0/System.IO.Compression.json
+++ b/xml/SourceLinkInformation/net-8.0/System.IO.Compression.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.IO.Compression",
   "GUID": "C511FFD9A3C5AF23C6FF7C9B71D6483BFFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.IO.FileSystem.DriveInfo.json b/xml/SourceLinkInformation/net-8.0/System.IO.FileSystem.DriveInfo.json
index 4eff005e629..0acccdc0b66 100644
--- a/xml/SourceLinkInformation/net-8.0/System.IO.FileSystem.DriveInfo.json
+++ b/xml/SourceLinkInformation/net-8.0/System.IO.FileSystem.DriveInfo.json
@@ -1,7 +1,7 @@
 {
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   "GUID": "6B0DC9B487DA7545C9ED1820FD172C1BFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.IO.FileSystem.Watcher.json b/xml/SourceLinkInformation/net-8.0/System.IO.FileSystem.Watcher.json
index 9a85acf4de6..c599dcf1846 100644
--- a/xml/SourceLinkInformation/net-8.0/System.IO.FileSystem.Watcher.json
+++ b/xml/SourceLinkInformation/net-8.0/System.IO.FileSystem.Watcher.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.IO.Hashing.json b/xml/SourceLinkInformation/net-8.0/System.IO.Hashing.json
index f4633d2c40d..c15db7a3bc3 100644
--- a/xml/SourceLinkInformation/net-8.0/System.IO.Hashing.json
+++ b/xml/SourceLinkInformation/net-8.0/System.IO.Hashing.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.IO.Hashing",
   "GUID": "D0B0E5D3A6524F4499F5B96752877F63FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.IO.IsolatedStorage.json b/xml/SourceLinkInformation/net-8.0/System.IO.IsolatedStorage.json
index b169efa2f3d..7b9b4a199d5 100644
--- a/xml/SourceLinkInformation/net-8.0/System.IO.IsolatedStorage.json
+++ b/xml/SourceLinkInformation/net-8.0/System.IO.IsolatedStorage.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.IO.IsolatedStorage",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.IO.MemoryMappedFiles.json b/xml/SourceLinkInformation/net-8.0/System.IO.MemoryMappedFiles.json
index 655c3d7359b..8c7c431f123 100644
--- a/xml/SourceLinkInformation/net-8.0/System.IO.MemoryMappedFiles.json
+++ b/xml/SourceLinkInformation/net-8.0/System.IO.MemoryMappedFiles.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.IO.MemoryMappedFiles",
   "GUID": "7B4CEC4ABDEE355066A748A0B7F2F09FFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.IO.Packaging.json b/xml/SourceLinkInformation/net-8.0/System.IO.Packaging.json
index 54340f4d8b5..5a72627dfd8 100644
--- a/xml/SourceLinkInformation/net-8.0/System.IO.Packaging.json
+++ b/xml/SourceLinkInformation/net-8.0/System.IO.Packaging.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.IO.Packaging",
   "GUID": "D4E937C390A6475893E1FB02025D79FCFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.IO.Pipelines.json b/xml/SourceLinkInformation/net-8.0/System.IO.Pipelines.json
index 94d6f8610e9..d5cf1423014 100644
--- a/xml/SourceLinkInformation/net-8.0/System.IO.Pipelines.json
+++ b/xml/SourceLinkInformation/net-8.0/System.IO.Pipelines.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.IO.Pipelines",
   "GUID": "62F65820F5F2A8FF28CCF1CC896F0751FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.IO.Pipes.json b/xml/SourceLinkInformation/net-8.0/System.IO.Pipes.json
index 459e4848a88..a46d0b33e06 100644
--- a/xml/SourceLinkInformation/net-8.0/System.IO.Pipes.json
+++ b/xml/SourceLinkInformation/net-8.0/System.IO.Pipes.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.IO.Pipes",
   "GUID": "403FE94C6D13759F7A447F544323B9F5FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.IO.Ports.json b/xml/SourceLinkInformation/net-8.0/System.IO.Ports.json
index e788877b32f..8a06564cfa4 100644
--- a/xml/SourceLinkInformation/net-8.0/System.IO.Ports.json
+++ b/xml/SourceLinkInformation/net-8.0/System.IO.Ports.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.IO.Ports",
   "GUID": "0820224BA84F4E8FA937D7E2F8A08858FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Linq.Expressions.json b/xml/SourceLinkInformation/net-8.0/System.Linq.Expressions.json
index 3fac0b75a75..da54e53a5c0 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Linq.Expressions.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Linq.Expressions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Linq.Expressions",
   "GUID": "C43520F8D8C94A543DBCC07CD19B7CC1FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Linq.Parallel.json b/xml/SourceLinkInformation/net-8.0/System.Linq.Parallel.json
index ff0dcf13aa3..57e408c0790 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Linq.Parallel.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Linq.Parallel.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Linq.Parallel",
   "GUID": "715D735435D0EAF46991AEDA072DAEE1FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Linq.Queryable.json b/xml/SourceLinkInformation/net-8.0/System.Linq.Queryable.json
index c305cfc282e..fff27bcf2b5 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Linq.Queryable.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Linq.Queryable.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Linq.Queryable",
   "GUID": "531569F70E620118D8EEF17B4207B8E6FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Linq.json b/xml/SourceLinkInformation/net-8.0/System.Linq.json
index 56a7ddbb02e..4a88ad1af2d 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Linq.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Linq.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Linq",
   "GUID": "20124A2582A3843474536FE7E0E32A3BFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Management.json b/xml/SourceLinkInformation/net-8.0/System.Management.json
index 91e5eea84a0..f3d31dfa487 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Management.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Management.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Management",
   "GUID": "B8E81E64CF7145A6A8A672221024B52FFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Memory.Data.json b/xml/SourceLinkInformation/net-8.0/System.Memory.Data.json
index d42b415abc9..2aabc5821c5 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Memory.Data.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Memory.Data.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Memory.Data",
   "GUID": "6248A310F4B84BF5931BAB29F73DA1E1FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Memory.json b/xml/SourceLinkInformation/net-8.0/System.Memory.json
index 515e0421221..79828ba66b3 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Memory.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Memory.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Memory",
   "GUID": "94C61D05225789DC2C5B65516791741BFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.Http.Json.json b/xml/SourceLinkInformation/net-8.0/System.Net.Http.Json.json
index 885579324fb..e037429b486 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.Http.Json.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.Http.Json.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Http.Json",
   "GUID": "34A9CBE3CB9DF664C4838EEC2DBC964AFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.Http.WinHttpHandler.json b/xml/SourceLinkInformation/net-8.0/System.Net.Http.WinHttpHandler.json
index f9b32b54ab2..fe9aae284dc 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.Http.WinHttpHandler.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.Http.WinHttpHandler.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Http.WinHttpHandler",
   "GUID": "1A2BE69B0CE44336ABDCC41CD862C6C2FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.Http.json b/xml/SourceLinkInformation/net-8.0/System.Net.Http.json
index 3069ceafc5e..6748f9506b0 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.Http.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.Http.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Http",
   "GUID": "8B8D650226E6514E62E11BB18730A8ABFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.HttpListener.json b/xml/SourceLinkInformation/net-8.0/System.Net.HttpListener.json
index dbfe9ae5106..82bfecd9eeb 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.HttpListener.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.HttpListener.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.HttpListener",
   "GUID": "8BDF9503782C8A66BE788B7929559704FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.Mail.json b/xml/SourceLinkInformation/net-8.0/System.Net.Mail.json
index 82dfdc7cd99..c798d50149b 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.Mail.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.Mail.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Mail",
   "GUID": "2DA6C67CDAFB0ADB1CFC9C2AC69BB470FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.NameResolution.json b/xml/SourceLinkInformation/net-8.0/System.Net.NameResolution.json
index d88266c7db4..526ec9afc4e 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.NameResolution.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.NameResolution.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.NameResolution",
   "GUID": "73E40861E311853B50A9159E12C42108FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.NetworkInformation.json b/xml/SourceLinkInformation/net-8.0/System.Net.NetworkInformation.json
index 23e79404643..1da0848d315 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.NetworkInformation.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.NetworkInformation.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.NetworkInformation",
   "GUID": "1142DEC0DE586FE4CB76C19D27A2693BFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.Ping.json b/xml/SourceLinkInformation/net-8.0/System.Net.Ping.json
index 0e560d26603..37776eb79f8 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.Ping.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.Ping.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Ping",
   "GUID": "40AA035863DD05BA4A157C59CDB61238FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.Primitives.json b/xml/SourceLinkInformation/net-8.0/System.Net.Primitives.json
index ad0ed1c4495..7f565559256 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.Primitives.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.Primitives.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.Quic.json b/xml/SourceLinkInformation/net-8.0/System.Net.Quic.json
index bd049148b53..ae76316999a 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.Quic.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.Quic.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Quic",
   "GUID": "85A87343DFE5582121B24E6EAC1B9115FFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.Requests.json b/xml/SourceLinkInformation/net-8.0/System.Net.Requests.json
index e27c161918c..02e64ff23f3 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.Requests.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.Requests.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.Security.json b/xml/SourceLinkInformation/net-8.0/System.Net.Security.json
index 0a8f65c0b92..ddbe45620ac 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.Security.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.Security.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.ServerSentEvents.json b/xml/SourceLinkInformation/net-8.0/System.Net.ServerSentEvents.json
index e7f97aafacd..1a7f47b87cf 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.ServerSentEvents.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.ServerSentEvents.json
@@ -1,7 +1,7 @@
 {
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   "GUID": "92DB8752B3AC44E0B4A1067F7A6245ABFFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.ServicePoint.json b/xml/SourceLinkInformation/net-8.0/System.Net.ServicePoint.json
index a20bb1c9762..67572cca546 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.ServicePoint.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.ServicePoint.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.Sockets.json b/xml/SourceLinkInformation/net-8.0/System.Net.Sockets.json
index ccbc4fbec26..f8b98076aec 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.Sockets.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.Sockets.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Sockets",
   "GUID": "81C966DF1C2B744F142C025858D199C7FFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.WebClient.json b/xml/SourceLinkInformation/net-8.0/System.Net.WebClient.json
index d16a2fe1ec0..05c455d3dd0 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.WebClient.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.WebClient.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.WebClient",
   "GUID": "6D4970C708D974777632CD6C3800004CFFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.WebHeaderCollection.json b/xml/SourceLinkInformation/net-8.0/System.Net.WebHeaderCollection.json
index 029e501661c..c9cd5ac0a09 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.WebHeaderCollection.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.WebHeaderCollection.json
@@ -1,7 +1,7 @@
 {
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   "GUID": "C0E0B4D083D7A28CE250D969B906A1EFFFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.WebProxy.json b/xml/SourceLinkInformation/net-8.0/System.Net.WebProxy.json
index 8670ac3cfd4..7e0da6f929e 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.WebProxy.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.WebProxy.json
@@ -1,7 +1,7 @@
 {
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   "GUID": "F64EEB34CE97EC079D4733ABD1B88E62FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.WebSockets.Client.json b/xml/SourceLinkInformation/net-8.0/System.Net.WebSockets.Client.json
index aefd442c88e..3175952e71a 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.WebSockets.Client.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.WebSockets.Client.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.WebSockets.Client",
   "GUID": "85539CF0B84BED7E69B2CA45F3D06739FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Net.WebSockets.json b/xml/SourceLinkInformation/net-8.0/System.Net.WebSockets.json
index 29dd0f7c0bf..a362c739b86 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Net.WebSockets.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Net.WebSockets.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.WebSockets",
   "GUID": "72DEB2DD4FFCD1BF6C15D4D3441FA4E9FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Numerics.Tensors.json b/xml/SourceLinkInformation/net-8.0/System.Numerics.Tensors.json
index 7c39daa3e5e..d8464293b35 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Numerics.Tensors.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Numerics.Tensors.json
@@ -1,7 +1,7 @@
 {
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   "GUID": "742172513E2148B791683E6AC3B1B263FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.ObjectModel.json b/xml/SourceLinkInformation/net-8.0/System.ObjectModel.json
index 6b1293e1d46..96984876479 100644
--- a/xml/SourceLinkInformation/net-8.0/System.ObjectModel.json
+++ b/xml/SourceLinkInformation/net-8.0/System.ObjectModel.json
@@ -1,7 +1,7 @@
 {
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   "GUID": "5BF0C49D3D5D2FBD1A524EFBEBCCEAD9FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Private.CoreLib.json b/xml/SourceLinkInformation/net-8.0/System.Private.CoreLib.json
index ed3a5bac098..45fea52c4e2 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Private.CoreLib.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Private.CoreLib.json
@@ -1,7 +1,7 @@
 {
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Private.DataContractSerialization.json b/xml/SourceLinkInformation/net-8.0/System.Private.DataContractSerialization.json
index 191764d3446..cde469764f0 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Private.DataContractSerialization.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Private.DataContractSerialization.json
@@ -1,7 +1,7 @@
 {
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Private.Uri.json b/xml/SourceLinkInformation/net-8.0/System.Private.Uri.json
index d9f161dd548..1dd0c8b2884 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Private.Uri.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Private.Uri.json
@@ -1,7 +1,7 @@
 {
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   "GUID": "86D6D9E7BC2D55601C6B07C5D7ACDC82FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Private.Xml.Linq.json b/xml/SourceLinkInformation/net-8.0/System.Private.Xml.Linq.json
index 82516fc6a83..77ed3a5d40c 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Private.Xml.Linq.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Private.Xml.Linq.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Private.Xml.json b/xml/SourceLinkInformation/net-8.0/System.Private.Xml.json
index 5a0a9814b3d..80576bcebad 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Private.Xml.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Private.Xml.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Private.Xml",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Reflection.Context.json b/xml/SourceLinkInformation/net-8.0/System.Reflection.Context.json
index aa8c8448860..c9395e4fc73 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Reflection.Context.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Reflection.Context.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Reflection.DispatchProxy.json b/xml/SourceLinkInformation/net-8.0/System.Reflection.DispatchProxy.json
index 1eac2a63bfb..051c9c807ed 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Reflection.DispatchProxy.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Reflection.DispatchProxy.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Reflection.Metadata.json b/xml/SourceLinkInformation/net-8.0/System.Reflection.Metadata.json
index 078c63fa46f..6afb7d7ba5c 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Reflection.Metadata.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Reflection.Metadata.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Reflection.MetadataLoadContext.json b/xml/SourceLinkInformation/net-8.0/System.Reflection.MetadataLoadContext.json
index 6ecb06bf380..1ff1f904b21 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Reflection.MetadataLoadContext.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Reflection.MetadataLoadContext.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Reflection.TypeExtensions.json b/xml/SourceLinkInformation/net-8.0/System.Reflection.TypeExtensions.json
index dfa0c5f9627..9b2d23cfe83 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Reflection.TypeExtensions.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Reflection.TypeExtensions.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Resources.Extensions.json b/xml/SourceLinkInformation/net-8.0/System.Resources.Extensions.json
index 26057cbb4ee..c39eaa313c4 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Resources.Extensions.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Resources.Extensions.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Resources.Writer.json b/xml/SourceLinkInformation/net-8.0/System.Resources.Writer.json
index aff3e89d7f8..aaefbb64850 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Resources.Writer.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Resources.Writer.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Runtime.Caching.json b/xml/SourceLinkInformation/net-8.0/System.Runtime.Caching.json
index 9e1f7af1bd4..0a22457a668 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Runtime.Caching.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Runtime.Caching.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Runtime.CompilerServices.VisualC.json b/xml/SourceLinkInformation/net-8.0/System.Runtime.CompilerServices.VisualC.json
index 4902c538b8f..7ba140b6b1b 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Runtime.CompilerServices.VisualC.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Runtime.CompilerServices.VisualC.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Runtime.InteropServices.json b/xml/SourceLinkInformation/net-8.0/System.Runtime.InteropServices.json
index 1053bf539f2..7eb1cc9eb0b 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Runtime.InteropServices.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Runtime.InteropServices.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Runtime.Numerics.json b/xml/SourceLinkInformation/net-8.0/System.Runtime.Numerics.json
index d1973fbf7a2..93b41d6050d 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Runtime.Numerics.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Runtime.Numerics.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Runtime.Serialization.Formatters.json b/xml/SourceLinkInformation/net-8.0/System.Runtime.Serialization.Formatters.json
index 260ce5b5020..fcffdd12340 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Runtime.Serialization.Formatters.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Runtime.Serialization.Formatters.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Runtime.Serialization.Primitives.json b/xml/SourceLinkInformation/net-8.0/System.Runtime.Serialization.Primitives.json
index db9526b37b4..6cdbf31e737 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Runtime.Serialization.Primitives.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Runtime.Serialization.Primitives.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Runtime.Serialization.Schema.json b/xml/SourceLinkInformation/net-8.0/System.Runtime.Serialization.Schema.json
index 24426e553c2..fcb5b53fc41 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Runtime.Serialization.Schema.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Runtime.Serialization.Schema.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Security.Claims.json b/xml/SourceLinkInformation/net-8.0/System.Security.Claims.json
index 08ae216a421..17bacb1e09d 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Security.Claims.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Security.Claims.json
@@ -1,7 +1,7 @@
 {
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   "GUID": "25DE1B8FE738624902BAA9C74E8A4393FFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.Cose.json b/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.Cose.json
index ef139d90952..bd85ffc8a71 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.Cose.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.Cose.json
@@ -1,7 +1,7 @@
 {
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   "GUID": "ECC67833CF4248E78B4E40CAD7072293FFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.Pkcs.json b/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.Pkcs.json
index 1ef444d21fb..5cf2854a510 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.Pkcs.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.Pkcs.json
@@ -1,7 +1,7 @@
 {
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.ProtectedData.json b/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.ProtectedData.json
index c36fd98ce60..03fbcd167a6 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.ProtectedData.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.ProtectedData.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.Xml.json b/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.Xml.json
index 7d60a37a3e2..57bcd6f3eed 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.Xml.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.Xml.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Security.Cryptography.Xml",
   "GUID": "947A930414954B45B65722247DA9DC86FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.json b/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.json
index 5a9608996f1..3ac4f8967fa 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Security.Cryptography.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Security.Cryptography",
   "GUID": "DECB38890FB43B2128D9BBD4E2FD1BF7FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-8.0/System.Security.Permissions.json b/xml/SourceLinkInformation/net-8.0/System.Security.Permissions.json
index 80cf1eaeef1..d0758ea332e 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Security.Permissions.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Security.Permissions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Security.Permissions",
   "GUID": "248049B1F03E4E348CC30285C1705BAFFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-8.0/System.ServiceModel.Federation.json b/xml/SourceLinkInformation/net-8.0/System.ServiceModel.Federation.json
index dc24b77ddb1..865779b68c5 100644
--- a/xml/SourceLinkInformation/net-8.0/System.ServiceModel.Federation.json
+++ b/xml/SourceLinkInformation/net-8.0/System.ServiceModel.Federation.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.ServiceModel.Federation",
   "GUID": "51CFF088B3B642EFB016934C5E957BA4FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-8.0/System.ServiceModel.Http.json b/xml/SourceLinkInformation/net-8.0/System.ServiceModel.Http.json
index 571fc3372f9..2333922fd1c 100644
--- a/xml/SourceLinkInformation/net-8.0/System.ServiceModel.Http.json
+++ b/xml/SourceLinkInformation/net-8.0/System.ServiceModel.Http.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.ServiceModel.Http",
   "GUID": "D04B2CA888C34D9FA3BFB479DC17A7FCFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-8.0/System.ServiceModel.NetNamedPipe.json b/xml/SourceLinkInformation/net-8.0/System.ServiceModel.NetNamedPipe.json
index f71f7c21ed5..40b47f32ece 100644
--- a/xml/SourceLinkInformation/net-8.0/System.ServiceModel.NetNamedPipe.json
+++ b/xml/SourceLinkInformation/net-8.0/System.ServiceModel.NetNamedPipe.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.ServiceModel.NetNamedPipe",
   "GUID": "B57F639092994C9DB4AAE52EC74507D5FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-8.0/System.ServiceModel.NetTcp.json b/xml/SourceLinkInformation/net-8.0/System.ServiceModel.NetTcp.json
index 07ebbb2a4ea..9aeb7a6e01b 100644
--- a/xml/SourceLinkInformation/net-8.0/System.ServiceModel.NetTcp.json
+++ b/xml/SourceLinkInformation/net-8.0/System.ServiceModel.NetTcp.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.ServiceModel.NetTcp",
   "GUID": "1AE1213E08854C9B90031D59BE550CE0FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-8.0/System.ServiceModel.Primitives.json b/xml/SourceLinkInformation/net-8.0/System.ServiceModel.Primitives.json
index f0f45934920..768f8e2c0de 100644
--- a/xml/SourceLinkInformation/net-8.0/System.ServiceModel.Primitives.json
+++ b/xml/SourceLinkInformation/net-8.0/System.ServiceModel.Primitives.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.ServiceModel.Primitives",
   "GUID": "F15FECC8625744FCAD4A04F754AF5DADFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-8.0/System.ServiceModel.Syndication.json b/xml/SourceLinkInformation/net-8.0/System.ServiceModel.Syndication.json
index 96bc3825302..65ac08b22da 100644
--- a/xml/SourceLinkInformation/net-8.0/System.ServiceModel.Syndication.json
+++ b/xml/SourceLinkInformation/net-8.0/System.ServiceModel.Syndication.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.ServiceModel.Syndication",
   "GUID": "33640B0EDD354C14A0C6845BC6CE3558FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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       "Members": [
diff --git a/xml/SourceLinkInformation/net-8.0/System.ServiceModel.UnixDomainSocket.json b/xml/SourceLinkInformation/net-8.0/System.ServiceModel.UnixDomainSocket.json
index d7694551881..54263774fbf 100644
--- a/xml/SourceLinkInformation/net-8.0/System.ServiceModel.UnixDomainSocket.json
+++ b/xml/SourceLinkInformation/net-8.0/System.ServiceModel.UnixDomainSocket.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.ServiceModel.UnixDomainSocket",
   "GUID": "B5270AC67A9A468F9EF28021BA887C28FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-8.0/System.ServiceProcess.ServiceController.json b/xml/SourceLinkInformation/net-8.0/System.ServiceProcess.ServiceController.json
index b4f61014074..7d61556fbeb 100644
--- a/xml/SourceLinkInformation/net-8.0/System.ServiceProcess.ServiceController.json
+++ b/xml/SourceLinkInformation/net-8.0/System.ServiceProcess.ServiceController.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.ServiceProcess.ServiceController",
   "GUID": "BA9E3B920E7247DFAD850EB7FE3053F0FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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       "Members": [
diff --git a/xml/SourceLinkInformation/net-8.0/System.Speech.json b/xml/SourceLinkInformation/net-8.0/System.Speech.json
index 65ff925673d..2eb7c8cf486 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Speech.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Speech.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Speech",
   "GUID": "57820A0C4D1F479F8416BB485DFCDE4FFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-8.0/System.Text.Encoding.CodePages.json b/xml/SourceLinkInformation/net-8.0/System.Text.Encoding.CodePages.json
index fe03bd56499..185d72a18af 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Text.Encoding.CodePages.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Text.Encoding.CodePages.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Text.Encoding.CodePages",
   "GUID": "C5C91F71AF21DDD6EB3349A1B8FCD834FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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       "Members": [
diff --git a/xml/SourceLinkInformation/net-8.0/System.Text.Encodings.Web.json b/xml/SourceLinkInformation/net-8.0/System.Text.Encodings.Web.json
index 999690808f8..e14efe2d595 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Text.Encodings.Web.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Text.Encodings.Web.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Text.Encodings.Web",
   "GUID": "F70DC3A7DBCC119BA94DE1986C01D543FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-8.0/System.Text.Json.json b/xml/SourceLinkInformation/net-8.0/System.Text.Json.json
index 9706faec612..f626a385ee6 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Text.Json.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Text.Json.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Text.Json",
   "GUID": "8DB7B6F05A591E44AEB1D18DF371E1E8FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Text.RegularExpressions.json b/xml/SourceLinkInformation/net-8.0/System.Text.RegularExpressions.json
index 529368b0ad9..27171d05592 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Text.RegularExpressions.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Text.RegularExpressions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Text.RegularExpressions",
   "GUID": "FBDEE97EC5DFD5D3E10289AC9D3773EAFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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       "Members": [
diff --git a/xml/SourceLinkInformation/net-8.0/System.Threading.AccessControl.json b/xml/SourceLinkInformation/net-8.0/System.Threading.AccessControl.json
index 7ef6e5420ad..27a4212d6d5 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Threading.AccessControl.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Threading.AccessControl.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Threading.AccessControl",
   "GUID": "8C94BA2C490645EEBE6EE0A943ADBB4AFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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       "Members": [
diff --git a/xml/SourceLinkInformation/net-8.0/System.Threading.Channels.json b/xml/SourceLinkInformation/net-8.0/System.Threading.Channels.json
index ae8b3db59cf..1d8a54848a0 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Threading.Channels.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Threading.Channels.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Threading.Channels",
   "GUID": "52145F99B1AE91200F66DDC632D13BAEFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Threading.Tasks.Dataflow.json b/xml/SourceLinkInformation/net-8.0/System.Threading.Tasks.Dataflow.json
index bc7b702c490..e313695cd46 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Threading.Tasks.Dataflow.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Threading.Tasks.Dataflow.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Threading.Tasks.Dataflow",
   "GUID": "78FC576C9CEDABFF583B23D757C761AEFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Threading.Tasks.Parallel.json b/xml/SourceLinkInformation/net-8.0/System.Threading.Tasks.Parallel.json
index 51946eae088..08cf98d676d 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Threading.Tasks.Parallel.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Threading.Tasks.Parallel.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Threading.Tasks.Parallel",
   "GUID": "046781DA806C32113A68E48057B43AEFFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Threading.json b/xml/SourceLinkInformation/net-8.0/System.Threading.json
index 4fae4bb2b83..42c7f18e8c8 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Threading.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Threading.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Threading",
   "GUID": "46B2089028561AF04C2AF7890AA0E97AFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-8.0/System.Transactions.Local.json b/xml/SourceLinkInformation/net-8.0/System.Transactions.Local.json
index 041fe0999f3..099110ab081 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Transactions.Local.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Transactions.Local.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Transactions.Local",
   "GUID": "614657E305C75AE1CC576D4607687FF1FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Web.HttpUtility.json b/xml/SourceLinkInformation/net-8.0/System.Web.HttpUtility.json
index 538bd40fdec..e36d58b99d4 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Web.HttpUtility.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Web.HttpUtility.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Web.HttpUtility",
   "GUID": "D087A2B64A8BD363BE8045BA2FDEE5AEFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Windows.Extensions.json b/xml/SourceLinkInformation/net-8.0/System.Windows.Extensions.json
index 87102461b55..17423792da4 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Windows.Extensions.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Windows.Extensions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Windows.Extensions",
   "GUID": "BF55AF6660AD4D1D9BFFA16ACFCF8332FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-8.0/System.Xml.XPath.XDocument.json b/xml/SourceLinkInformation/net-8.0/System.Xml.XPath.XDocument.json
index 966f3a161c0..5d9d14bc59b 100644
--- a/xml/SourceLinkInformation/net-8.0/System.Xml.XPath.XDocument.json
+++ b/xml/SourceLinkInformation/net-8.0/System.Xml.XPath.XDocument.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Xml.XPath.XDocument",
   "GUID": "F23BB45D714D4F55C71111E2FC302753FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.CSharp.json b/xml/SourceLinkInformation/net-9.0/Microsoft.CSharp.json
index 6d72e090951..cce15235e0f 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.CSharp.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.CSharp.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.CSharp",
   "GUID": "B5E486F080B6035A2BA8069C3B3AB2B9FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Caching.Abstractions.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Caching.Abstractions.json
index a26ffa3d1ae..544f8d4adff 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Caching.Abstractions.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Caching.Abstractions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Caching.Abstractions",
   "GUID": "DBE870DC381446BDA1C446243562B831FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Caching.Memory.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Caching.Memory.json
index 71b3b99d275..b2ee2af70fd 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Caching.Memory.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Caching.Memory.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Caching.Memory",
   "GUID": "FD33054C1E9744EE80C31B040681662AFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Caching.SqlServer.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Caching.SqlServer.json
index 381b6647998..42f23b7e847 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Caching.SqlServer.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Caching.SqlServer.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Caching.SqlServer",
   "GUID": "D3BAD9BD8F5E46EBA42BC35692D76A47FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Caching.StackExchangeRedis.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Caching.StackExchangeRedis.json
index 2b0ddd13885..a4a58029d31 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Caching.StackExchangeRedis.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Caching.StackExchangeRedis.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Caching.StackExchangeRedis",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Abstractions.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Abstractions.json
index b17b0c165c8..c809237e945 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Abstractions.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Abstractions.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Binder.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Binder.json
index 3ae1dde01c8..17a8a1a66ac 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Binder.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Binder.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.Binder",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.CommandLine.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.CommandLine.json
index 5e1b11a91cd..5b16d3f5e9b 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.CommandLine.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.CommandLine.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.EnvironmentVariables.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.EnvironmentVariables.json
index cb41290d28f..ad78fafafb3 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.EnvironmentVariables.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.EnvironmentVariables.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Configuration.EnvironmentVariables",
   "GUID": "4497B8C6F3FE44EA820692241CDCB82EFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.FileExtensions.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.FileExtensions.json
index abb813eb362..9869b066f63 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.FileExtensions.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.FileExtensions.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Ini.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Ini.json
index 00f936431a2..7be32ed5b79 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Ini.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Ini.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Json.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Json.json
index eb5224d5fbb..bc7be0da0c9 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Json.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Json.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.KeyPerFile.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.KeyPerFile.json
index 66d65999286..44feb7bbd36 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.KeyPerFile.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.KeyPerFile.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.UserSecrets.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.UserSecrets.json
index 6465d76d935..8a5623e8f7d 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.UserSecrets.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.UserSecrets.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Xml.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Xml.json
index added9cc707..35a29e345bf 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Xml.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.Xml.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.json
index 5b760a3edbd..9291fd778a1 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Configuration.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.DependencyInjection.Abstractions.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.DependencyInjection.Abstractions.json
index dee35c586c1..237fbff8d15 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.DependencyInjection.Abstractions.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.DependencyInjection.Abstractions.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.DependencyInjection.Specification.Tests.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.DependencyInjection.Specification.Tests.json
index d6505c8cc69..fef52110c5b 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.DependencyInjection.Specification.Tests.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.DependencyInjection.Specification.Tests.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.DependencyInjection.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.DependencyInjection.json
index 71936172b91..4d7d61ffc62 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.DependencyInjection.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.DependencyInjection.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.DependencyModel.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.DependencyModel.json
index a44204f8c91..3e3f4e204ca 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.DependencyModel.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.DependencyModel.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.Abstractions.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.Abstractions.json
index d9450a4130f..db10b5c4e6a 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.Abstractions.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.Abstractions.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions.json
index 2ad966d2854..dcdb9450bfa 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.HealthChecks.EntityFrameworkCore.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.HealthChecks.EntityFrameworkCore.json
index 182e414c1e9..e7b60806cdb 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.HealthChecks.EntityFrameworkCore.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.HealthChecks.EntityFrameworkCore.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.HealthChecks.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.HealthChecks.json
index 40cf19dcec8..cc15ea8bea6 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.HealthChecks.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.HealthChecks.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.json
index b024a8fbb18..7b4c88ebfbd 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Diagnostics.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileProviders.Abstractions.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileProviders.Abstractions.json
index 976ccb0e4e1..8fc723080db 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileProviders.Abstractions.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileProviders.Abstractions.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileProviders.Composite.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileProviders.Composite.json
index a963f59992d..8a3309c3c1a 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileProviders.Composite.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileProviders.Composite.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileProviders.Embedded.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileProviders.Embedded.json
index f64d0c29ca4..35cb80e681f 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileProviders.Embedded.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileProviders.Embedded.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileProviders.Physical.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileProviders.Physical.json
index ab4b914b667..276e0b353ca 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileProviders.Physical.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileProviders.Physical.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileSystemGlobbing.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileSystemGlobbing.json
index 649fa04834b..bbba98142fe 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileSystemGlobbing.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.FileSystemGlobbing.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Hosting.Abstractions.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Hosting.Abstractions.json
index 6ae0f3be0d7..ce70b8bcdbd 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Hosting.Abstractions.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Hosting.Abstractions.json
@@ -1,7 +1,7 @@
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Hosting.Systemd.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Hosting.Systemd.json
index 954864381c9..81e491334bc 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Hosting.Systemd.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Hosting.Systemd.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Hosting.Systemd",
   "GUID": "347723E90701467F913916B4754E9549FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Hosting.WindowsServices.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Hosting.WindowsServices.json
index 7eca12ddd67..084c86b8a7c 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Hosting.WindowsServices.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Hosting.WindowsServices.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Hosting.WindowsServices",
   "GUID": "C7AA206D91F5456D9B248C89C4389F6BFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Hosting.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Hosting.json
index 51abec2a7c8..a3ef1fe6e7d 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Hosting.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Hosting.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Hosting",
   "GUID": "B83E2F422F1047E784A266F2C514E64CFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Http.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Http.json
index ccbda6536bc..1df481ef6f7 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Http.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Http.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Http",
   "GUID": "DF7DF57B3493436B889A557FD3A630B5FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Localization.Abstractions.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Localization.Abstractions.json
index f6393ae252d..1148b9cb71a 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Localization.Abstractions.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Localization.Abstractions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Localization.Abstractions",
   "GUID": "A30C7C03504A4766A6B7193827A697C2FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Localization.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Localization.json
index bba95cd346d..3b47e978eff 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Localization.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Localization.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Localization",
   "GUID": "9F4FC72170084B9C84553DA877047070FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.Abstractions.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.Abstractions.json
index 39fe1f45f96..a0deffdfea1 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.Abstractions.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.Abstractions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Logging.Abstractions",
   "GUID": "B4F0B92DA4FD42AF94572061B26459D9FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.AzureAppServices.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.AzureAppServices.json
index 6c6c13aa347..c741559f5cc 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.AzureAppServices.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.AzureAppServices.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Logging.AzureAppServices",
   "GUID": "F35BC442DAAC4D88BFCD10698D285991FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.Configuration.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.Configuration.json
index 538bea0dfb1..7c92e9af094 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.Configuration.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.Configuration.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Logging.Configuration",
   "GUID": "C598EF1E6E114895A84CE31294E8791DFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.Console.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.Console.json
index 60bf41924ce..414a9400dad 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.Console.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.Console.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Logging.Console",
   "GUID": "75EE1DE9087C4BA78BD804CA84AEB379FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.Debug.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.Debug.json
index 0c6656c3043..3f37a1b05c6 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.Debug.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.Debug.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Logging.Debug",
   "GUID": "DC648E33499D4894AE25196AE4ECC7D7FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.EventLog.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.EventLog.json
index adcf6c58538..ef15ad88f52 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.EventLog.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.EventLog.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Logging.EventLog",
   "GUID": "D35DA22C5B674A6DB1642547D2683A07FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.EventSource.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.EventSource.json
index 2b3029764d5..dd57366e946 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.EventSource.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.EventSource.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Logging.EventSource",
   "GUID": "BA521C805DBF40BE840D773F2CECC5DCFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.TraceSource.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.TraceSource.json
index 76df383f216..ad992a1ec73 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.TraceSource.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.TraceSource.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Logging.TraceSource",
   "GUID": "8D0DB59558EB4384859ED69F6F6FF022FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.json
index 86c2889e3b4..29bf42cac3d 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Logging.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Logging",
   "GUID": "8FCF4413B22540D5BAF30EA1DF46C35EFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.ObjectPool.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.ObjectPool.json
index 9b2cf0e6b68..7c0c2031f31 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.ObjectPool.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.ObjectPool.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.ObjectPool",
   "GUID": "0F7B182E98AF4297ACA9C4F1A2B63F28FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Options.ConfigurationExtensions.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Options.ConfigurationExtensions.json
index 4ff5d5720dd..4d5b700e39e 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Options.ConfigurationExtensions.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Options.ConfigurationExtensions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Options.ConfigurationExtensions",
   "GUID": "E90A6182204C4BFAB16E7D1ADAF5E047FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Options.DataAnnotations.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Options.DataAnnotations.json
index 10509d57727..324a9b7aff4 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Options.DataAnnotations.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Options.DataAnnotations.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Options.DataAnnotations",
   "GUID": "7A80C930AD6944C587C8C7C22EC9BC58FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Options.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Options.json
index 2c8a9b2e58d..503e866d67b 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Options.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Options.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Options",
   "GUID": "B53C35283AD54D138EDF0C867E672983FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Primitives.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Primitives.json
index 61935b1a3dd..77c84e3cf41 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Primitives.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.Primitives.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.Primitives",
   "GUID": "C793AACA958D4029B304C647D224A0C2FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.WebEncoders.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.WebEncoders.json
index 9aeab7620c2..a7603355004 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.WebEncoders.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Extensions.WebEncoders.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Extensions.WebEncoders",
   "GUID": "A9C88ED88E5F45999C7CB10858018560FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.VisualBasic.Core.json b/xml/SourceLinkInformation/net-9.0/Microsoft.VisualBasic.Core.json
index f11830418be..4dc8702d4c4 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.VisualBasic.Core.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.VisualBasic.Core.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.VisualBasic.Core",
   "GUID": "930207A20B556DEB8370F0BC5006CC4EFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Win32.Registry.AccessControl.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Win32.Registry.AccessControl.json
index d5251e1ea1b..0ae1e02cc39 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Win32.Registry.AccessControl.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Win32.Registry.AccessControl.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Win32.Registry.AccessControl",
   "GUID": "3D72F6D669A5413A88EC7F319F0539DEFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/Microsoft.Win32.SystemEvents.json b/xml/SourceLinkInformation/net-9.0/Microsoft.Win32.SystemEvents.json
index 3ca3ec7468c..260b85eaf93 100644
--- a/xml/SourceLinkInformation/net-9.0/Microsoft.Win32.SystemEvents.json
+++ b/xml/SourceLinkInformation/net-9.0/Microsoft.Win32.SystemEvents.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "Microsoft.Win32.SystemEvents",
   "GUID": "41415E77B06B496EB477E5EC4A3B35E7FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.CodeDom.json b/xml/SourceLinkInformation/net-9.0/System.CodeDom.json
index da1cbe4d6d7..4ac10126f25 100644
--- a/xml/SourceLinkInformation/net-9.0/System.CodeDom.json
+++ b/xml/SourceLinkInformation/net-9.0/System.CodeDom.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.CodeDom",
   "GUID": "C0E0A55E9EBD46F19CE24594D92F2590FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Collections.Concurrent.json b/xml/SourceLinkInformation/net-9.0/System.Collections.Concurrent.json
index 4f1b93f364c..12de3bab2c0 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Collections.Concurrent.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Collections.Concurrent.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Collections.Concurrent",
   "GUID": "75CE536CF080C63E62E4654ADE15898FFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Collections.NonGeneric.json b/xml/SourceLinkInformation/net-9.0/System.Collections.NonGeneric.json
index c2573106743..de1df82fbb0 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Collections.NonGeneric.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Collections.NonGeneric.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Collections.NonGeneric",
   "GUID": "5B7FF056A100B5599858E0676933A881FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Collections.Specialized.json b/xml/SourceLinkInformation/net-9.0/System.Collections.Specialized.json
index 996f25aa98c..0cd4cc61efa 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Collections.Specialized.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Collections.Specialized.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Collections.Specialized",
   "GUID": "6865D9316C8E47CA85D60F00351DAB06FFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Collections.json b/xml/SourceLinkInformation/net-9.0/System.Collections.json
index dff2bffd6df..58c6fa2b3b4 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Collections.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Collections.json
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 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.ComponentModel.Annotations.json b/xml/SourceLinkInformation/net-9.0/System.ComponentModel.Annotations.json
index 5de03a28e2f..c5cc57b1dfd 100644
--- a/xml/SourceLinkInformation/net-9.0/System.ComponentModel.Annotations.json
+++ b/xml/SourceLinkInformation/net-9.0/System.ComponentModel.Annotations.json
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 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.ComponentModel.Composition.Registration.json b/xml/SourceLinkInformation/net-9.0/System.ComponentModel.Composition.Registration.json
index 536e19e46ba..325d6d115b4 100644
--- a/xml/SourceLinkInformation/net-9.0/System.ComponentModel.Composition.Registration.json
+++ b/xml/SourceLinkInformation/net-9.0/System.ComponentModel.Composition.Registration.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.ComponentModel.Composition.json b/xml/SourceLinkInformation/net-9.0/System.ComponentModel.Composition.json
index a2718444676..9bc47fcb950 100644
--- a/xml/SourceLinkInformation/net-9.0/System.ComponentModel.Composition.json
+++ b/xml/SourceLinkInformation/net-9.0/System.ComponentModel.Composition.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.ComponentModel.EventBasedAsync.json b/xml/SourceLinkInformation/net-9.0/System.ComponentModel.EventBasedAsync.json
index 91ad8aa869e..6aef13c2b62 100644
--- a/xml/SourceLinkInformation/net-9.0/System.ComponentModel.EventBasedAsync.json
+++ b/xml/SourceLinkInformation/net-9.0/System.ComponentModel.EventBasedAsync.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.ComponentModel.Primitives.json b/xml/SourceLinkInformation/net-9.0/System.ComponentModel.Primitives.json
index 3d3e32761b4..3d2d24480c0 100644
--- a/xml/SourceLinkInformation/net-9.0/System.ComponentModel.Primitives.json
+++ b/xml/SourceLinkInformation/net-9.0/System.ComponentModel.Primitives.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.ComponentModel.TypeConverter.json b/xml/SourceLinkInformation/net-9.0/System.ComponentModel.TypeConverter.json
index b904cfea7f1..1b81be2c0ad 100644
--- a/xml/SourceLinkInformation/net-9.0/System.ComponentModel.TypeConverter.json
+++ b/xml/SourceLinkInformation/net-9.0/System.ComponentModel.TypeConverter.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.ComponentModel.json b/xml/SourceLinkInformation/net-9.0/System.ComponentModel.json
index af0185d5f40..49e0034a914 100644
--- a/xml/SourceLinkInformation/net-9.0/System.ComponentModel.json
+++ b/xml/SourceLinkInformation/net-9.0/System.ComponentModel.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Composition.AttributedModel.json b/xml/SourceLinkInformation/net-9.0/System.Composition.AttributedModel.json
index 23014fa709b..393fd8822cc 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Composition.AttributedModel.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Composition.AttributedModel.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Composition.Convention.json b/xml/SourceLinkInformation/net-9.0/System.Composition.Convention.json
index 4d7efbd8f86..7d215bb3b98 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Composition.Convention.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Composition.Convention.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Composition.Hosting.json b/xml/SourceLinkInformation/net-9.0/System.Composition.Hosting.json
index f25178fef4c..e66a1cbc2a4 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Composition.Hosting.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Composition.Hosting.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Composition.Runtime.json b/xml/SourceLinkInformation/net-9.0/System.Composition.Runtime.json
index 3df09fd545c..85c9acbac8c 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Composition.Runtime.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Composition.Runtime.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Composition.TypedParts.json b/xml/SourceLinkInformation/net-9.0/System.Composition.TypedParts.json
index 5a29754311d..47bde9efc07 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Composition.TypedParts.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Composition.TypedParts.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Configuration.ConfigurationManager.json b/xml/SourceLinkInformation/net-9.0/System.Configuration.ConfigurationManager.json
index eea51469eec..2b0ed9e0159 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Configuration.ConfigurationManager.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Configuration.ConfigurationManager.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Console.json b/xml/SourceLinkInformation/net-9.0/System.Console.json
index 3632595eb3d..2360bd750dc 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Console.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Console.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Data.Odbc.json b/xml/SourceLinkInformation/net-9.0/System.Data.Odbc.json
index 993ef383404..39f8160a16d 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Data.Odbc.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Data.Odbc.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Data.OleDb.json b/xml/SourceLinkInformation/net-9.0/System.Data.OleDb.json
index 08ca64d5c1c..ab05e1bbcab 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Data.OleDb.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Data.OleDb.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Diagnostics.DiagnosticSource.json b/xml/SourceLinkInformation/net-9.0/System.Diagnostics.DiagnosticSource.json
index 9ac89d19e11..42cbb45bcb0 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Diagnostics.DiagnosticSource.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Diagnostics.DiagnosticSource.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Diagnostics.EventLog.json b/xml/SourceLinkInformation/net-9.0/System.Diagnostics.EventLog.json
index 63bb74a907b..718ccda83ae 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Diagnostics.EventLog.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Diagnostics.EventLog.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Diagnostics.FileVersionInfo.json b/xml/SourceLinkInformation/net-9.0/System.Diagnostics.FileVersionInfo.json
index e572920c2f2..82edac6703e 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Diagnostics.FileVersionInfo.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Diagnostics.FileVersionInfo.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Diagnostics.PerformanceCounter.json b/xml/SourceLinkInformation/net-9.0/System.Diagnostics.PerformanceCounter.json
index 7b36dc96ef5..e2d0df2317f 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Diagnostics.PerformanceCounter.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Diagnostics.PerformanceCounter.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Diagnostics.Process.json b/xml/SourceLinkInformation/net-9.0/System.Diagnostics.Process.json
index dae187ec7bb..1f8115774f9 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Diagnostics.Process.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Diagnostics.Process.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Diagnostics.StackTrace.json b/xml/SourceLinkInformation/net-9.0/System.Diagnostics.StackTrace.json
index 37b481a155a..6038ce06cdb 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Diagnostics.StackTrace.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Diagnostics.StackTrace.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Diagnostics.TextWriterTraceListener.json b/xml/SourceLinkInformation/net-9.0/System.Diagnostics.TextWriterTraceListener.json
index c96fc87f382..6b23741b134 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Diagnostics.TextWriterTraceListener.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Diagnostics.TextWriterTraceListener.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Diagnostics.TraceSource.json b/xml/SourceLinkInformation/net-9.0/System.Diagnostics.TraceSource.json
index 459f9a8c7ef..45f9a0e2f04 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Diagnostics.TraceSource.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Diagnostics.TraceSource.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.DirectoryServices.AccountManagement.json b/xml/SourceLinkInformation/net-9.0/System.DirectoryServices.AccountManagement.json
index 0034164ff6a..69bd6f75998 100644
--- a/xml/SourceLinkInformation/net-9.0/System.DirectoryServices.AccountManagement.json
+++ b/xml/SourceLinkInformation/net-9.0/System.DirectoryServices.AccountManagement.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.DirectoryServices.Protocols.json b/xml/SourceLinkInformation/net-9.0/System.DirectoryServices.Protocols.json
index 2157e9394ea..d46d02ce212 100644
--- a/xml/SourceLinkInformation/net-9.0/System.DirectoryServices.Protocols.json
+++ b/xml/SourceLinkInformation/net-9.0/System.DirectoryServices.Protocols.json
@@ -1,7 +1,7 @@
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diff --git a/xml/SourceLinkInformation/net-9.0/System.DirectoryServices.json b/xml/SourceLinkInformation/net-9.0/System.DirectoryServices.json
index 09a46bf6ad7..ed022dcdb53 100644
--- a/xml/SourceLinkInformation/net-9.0/System.DirectoryServices.json
+++ b/xml/SourceLinkInformation/net-9.0/System.DirectoryServices.json
@@ -1,7 +1,7 @@
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Drawing.Common.json b/xml/SourceLinkInformation/net-9.0/System.Drawing.Common.json
index cd4bd55ecb6..f249953726e 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Drawing.Common.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Drawing.Common.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Drawing.Primitives.json b/xml/SourceLinkInformation/net-9.0/System.Drawing.Primitives.json
index d09f7401106..d68dcc106d5 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Drawing.Primitives.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Drawing.Primitives.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Drawing.Primitives",
   "GUID": "B3796A40CA369D8455ABC93DAFC32352FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Formats.Asn1.json b/xml/SourceLinkInformation/net-9.0/System.Formats.Asn1.json
index 3cfeab9780d..e6327238608 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Formats.Asn1.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Formats.Asn1.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Formats.Asn1",
   "GUID": "17900F49C7E7F49F3B61723F4B00B98DFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Formats.Cbor.json b/xml/SourceLinkInformation/net-9.0/System.Formats.Cbor.json
index 2c40786fdff..8f5a5a1c3c9 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Formats.Cbor.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Formats.Cbor.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Formats.Cbor",
   "GUID": "280DC2D8E2A04EEB9164049F88B89226FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Formats.Nrbf.json b/xml/SourceLinkInformation/net-9.0/System.Formats.Nrbf.json
index cd5ee6c01a3..69c99f134cc 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Formats.Nrbf.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Formats.Nrbf.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Formats.Nrbf",
   "GUID": "323B7DE60F654D5E86D01A7FC420DB24FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Formats.Tar.json b/xml/SourceLinkInformation/net-9.0/System.Formats.Tar.json
index b27da51cd1c..09aa713f912 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Formats.Tar.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Formats.Tar.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Formats.Tar",
   "GUID": "B6412D80625DCCE4FC3D00AD627185F7FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.IO.Compression.Brotli.json b/xml/SourceLinkInformation/net-9.0/System.IO.Compression.Brotli.json
index e031eb2a514..584670e38bd 100644
--- a/xml/SourceLinkInformation/net-9.0/System.IO.Compression.Brotli.json
+++ b/xml/SourceLinkInformation/net-9.0/System.IO.Compression.Brotli.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.IO.Compression.Brotli",
   "GUID": "D31C997E1647357C014BB8C2DF1F35DBFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.IO.Compression.ZipFile.json b/xml/SourceLinkInformation/net-9.0/System.IO.Compression.ZipFile.json
index aad7b2868bc..197319d4384 100644
--- a/xml/SourceLinkInformation/net-9.0/System.IO.Compression.ZipFile.json
+++ b/xml/SourceLinkInformation/net-9.0/System.IO.Compression.ZipFile.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.IO.Compression.ZipFile",
   "GUID": "EE8CAA140A64B719834335A1FEEC3CB7FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.IO.Compression.json b/xml/SourceLinkInformation/net-9.0/System.IO.Compression.json
index 6b4b6fa02fe..88a76e3127c 100644
--- a/xml/SourceLinkInformation/net-9.0/System.IO.Compression.json
+++ b/xml/SourceLinkInformation/net-9.0/System.IO.Compression.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.IO.Compression",
   "GUID": "23887AB3D1F99282EF7649AD3D931F87FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.IO.FileSystem.DriveInfo.json b/xml/SourceLinkInformation/net-9.0/System.IO.FileSystem.DriveInfo.json
index d0b5523a57a..1dbc3477a43 100644
--- a/xml/SourceLinkInformation/net-9.0/System.IO.FileSystem.DriveInfo.json
+++ b/xml/SourceLinkInformation/net-9.0/System.IO.FileSystem.DriveInfo.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.IO.FileSystem.DriveInfo",
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.IO.FileSystem.Watcher.json b/xml/SourceLinkInformation/net-9.0/System.IO.FileSystem.Watcher.json
index 2abaa6f7911..6477e60afb5 100644
--- a/xml/SourceLinkInformation/net-9.0/System.IO.FileSystem.Watcher.json
+++ b/xml/SourceLinkInformation/net-9.0/System.IO.FileSystem.Watcher.json
@@ -1,7 +1,7 @@
 {
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-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.IO.Hashing.json b/xml/SourceLinkInformation/net-9.0/System.IO.Hashing.json
index 709164c02b8..006556393f6 100644
--- a/xml/SourceLinkInformation/net-9.0/System.IO.Hashing.json
+++ b/xml/SourceLinkInformation/net-9.0/System.IO.Hashing.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.IO.Hashing",
   "GUID": "7A1868C40EB343F4A6F185F6A628CC42FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.IO.IsolatedStorage.json b/xml/SourceLinkInformation/net-9.0/System.IO.IsolatedStorage.json
index 778ab295edc..dd591a75c2c 100644
--- a/xml/SourceLinkInformation/net-9.0/System.IO.IsolatedStorage.json
+++ b/xml/SourceLinkInformation/net-9.0/System.IO.IsolatedStorage.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.IO.IsolatedStorage",
   "GUID": "25E250DEB2C1048B8E66E307A003175DFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.IO.MemoryMappedFiles.json b/xml/SourceLinkInformation/net-9.0/System.IO.MemoryMappedFiles.json
index 380289ef757..fb2334c9311 100644
--- a/xml/SourceLinkInformation/net-9.0/System.IO.MemoryMappedFiles.json
+++ b/xml/SourceLinkInformation/net-9.0/System.IO.MemoryMappedFiles.json
@@ -1,7 +1,7 @@
 {
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   "GUID": "90FC6FC413FA1D386EC4649D0F84987AFFFFFFFF",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.IO.Packaging.json b/xml/SourceLinkInformation/net-9.0/System.IO.Packaging.json
index 80c3c0fd6e0..68949ec99d7 100644
--- a/xml/SourceLinkInformation/net-9.0/System.IO.Packaging.json
+++ b/xml/SourceLinkInformation/net-9.0/System.IO.Packaging.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.IO.Packaging",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.IO.Pipelines.json b/xml/SourceLinkInformation/net-9.0/System.IO.Pipelines.json
index 65fe943805d..7e3ba454061 100644
--- a/xml/SourceLinkInformation/net-9.0/System.IO.Pipelines.json
+++ b/xml/SourceLinkInformation/net-9.0/System.IO.Pipelines.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.IO.Pipelines",
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.IO.Pipes.json b/xml/SourceLinkInformation/net-9.0/System.IO.Pipes.json
index 9e90679a282..627a816d83d 100644
--- a/xml/SourceLinkInformation/net-9.0/System.IO.Pipes.json
+++ b/xml/SourceLinkInformation/net-9.0/System.IO.Pipes.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.IO.Pipes",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.IO.Ports.json b/xml/SourceLinkInformation/net-9.0/System.IO.Ports.json
index c9364790010..ad285ed3505 100644
--- a/xml/SourceLinkInformation/net-9.0/System.IO.Ports.json
+++ b/xml/SourceLinkInformation/net-9.0/System.IO.Ports.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.IO.Ports",
   "GUID": "FEC2F32585894D078FD88CC361B2A635FFFFFFFF",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Linq.Parallel.json b/xml/SourceLinkInformation/net-9.0/System.Linq.Parallel.json
index 05ccada536c..cb41348604e 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Linq.Parallel.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Linq.Parallel.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Linq.Parallel",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Linq.Queryable.json b/xml/SourceLinkInformation/net-9.0/System.Linq.Queryable.json
index 17efccf3dbe..0eed1f4a160 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Linq.Queryable.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Linq.Queryable.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Linq.json b/xml/SourceLinkInformation/net-9.0/System.Linq.json
index 48bf9df2f8d..b98e7f47025 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Linq.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Linq.json
@@ -1,7 +1,7 @@
 {
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   "GUID": "7CC2F49855182143C3A282A8C83E2E65FFFFFFFF",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Management.json b/xml/SourceLinkInformation/net-9.0/System.Management.json
index 6495826cf91..9311918c5e4 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Management.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Management.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Memory.Data.json b/xml/SourceLinkInformation/net-9.0/System.Memory.Data.json
index ee0a5d2c2c4..a5203592659 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Memory.Data.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Memory.Data.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Memory.json b/xml/SourceLinkInformation/net-9.0/System.Memory.json
index 46d7dffa074..d11d4ac4c98 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Memory.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Memory.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Net.Http.Json.json b/xml/SourceLinkInformation/net-9.0/System.Net.Http.Json.json
index 643753577ca..441a1adfd2e 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Net.Http.Json.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Net.Http.Json.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Net.Http.WinHttpHandler.json b/xml/SourceLinkInformation/net-9.0/System.Net.Http.WinHttpHandler.json
index 2b4adb1c790..5ffaa8dd13a 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Net.Http.WinHttpHandler.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Net.Http.WinHttpHandler.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Net.Http.json b/xml/SourceLinkInformation/net-9.0/System.Net.Http.json
index 915eff59e77..f27b70648f0 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Net.Http.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Net.Http.json
@@ -1,7 +1,7 @@
 {
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Net.HttpListener.json b/xml/SourceLinkInformation/net-9.0/System.Net.HttpListener.json
index ede791abfb2..93d6026a14c 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Net.HttpListener.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Net.HttpListener.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Net.Mail.json b/xml/SourceLinkInformation/net-9.0/System.Net.Mail.json
index 52b299940ae..ea736872c65 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Net.Mail.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Net.Mail.json
@@ -1,7 +1,7 @@
 {
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+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
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diff --git a/xml/SourceLinkInformation/net-9.0/System.Net.NameResolution.json b/xml/SourceLinkInformation/net-9.0/System.Net.NameResolution.json
index 6f5cf9a64a2..062cdc1a7fb 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Net.NameResolution.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Net.NameResolution.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.NameResolution",
   "GUID": "007E08BA4ADD9CD00C29B40518CC506DFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-9.0/System.Net.NetworkInformation.json b/xml/SourceLinkInformation/net-9.0/System.Net.NetworkInformation.json
index e4ba486936b..2c3008db6c9 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Net.NetworkInformation.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Net.NetworkInformation.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.NetworkInformation",
   "GUID": "E3064002AA263FFC93FA62124FDD390BFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-9.0/System.Net.Ping.json b/xml/SourceLinkInformation/net-9.0/System.Net.Ping.json
index 3afb3c18bcc..f036ee50e8c 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Net.Ping.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Net.Ping.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Ping",
   "GUID": "5CBDA242096661F64B7846865B35C0CAFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-9.0/System.Net.Primitives.json b/xml/SourceLinkInformation/net-9.0/System.Net.Primitives.json
index 9163e23195a..3c1d8fea098 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Net.Primitives.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Net.Primitives.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Primitives",
   "GUID": "8FCCDF6F73EB55AB74D8221B0550FA2AFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-9.0/System.Net.Quic.json b/xml/SourceLinkInformation/net-9.0/System.Net.Quic.json
index aefcc33643d..f1e4d180112 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Net.Quic.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Net.Quic.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Quic",
   "GUID": "EDE4396BE8C4EA28908817F4D5AD460BFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-9.0/System.Net.Security.json b/xml/SourceLinkInformation/net-9.0/System.Net.Security.json
index 13be211010c..78b9923a993 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Net.Security.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Net.Security.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.Security",
   "GUID": "8666BE0506767971E579C8FB4B9B5E19FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-9.0/System.Net.WebProxy.json b/xml/SourceLinkInformation/net-9.0/System.Net.WebProxy.json
index 1caf6e9b35c..68130e357bd 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Net.WebProxy.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Net.WebProxy.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.WebProxy",
   "GUID": "83CEA2CA365D64788901FE4FF9196BB0FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-9.0/System.Net.WebSockets.Client.json b/xml/SourceLinkInformation/net-9.0/System.Net.WebSockets.Client.json
index 6e63fcbd222..88f26d3b091 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Net.WebSockets.Client.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Net.WebSockets.Client.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.WebSockets.Client",
   "GUID": "89E5E61A654C203B214E6EDA5DC5A47AFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-9.0/System.Net.WebSockets.json b/xml/SourceLinkInformation/net-9.0/System.Net.WebSockets.json
index ba136e9e266..0a289eaceb2 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Net.WebSockets.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Net.WebSockets.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Net.WebSockets",
   "GUID": "B398DAAF478238848741BB773BEFC781FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-9.0/System.Numerics.Tensors.json b/xml/SourceLinkInformation/net-9.0/System.Numerics.Tensors.json
index 6a2d843e4a4..47fa7e1d804 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Numerics.Tensors.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Numerics.Tensors.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Numerics.Tensors",
   "GUID": "4E5F977DA4A74691BC85EF0F4F372851FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-9.0/System.Reflection.Context.json b/xml/SourceLinkInformation/net-9.0/System.Reflection.Context.json
index 5d64fa6e165..f13d5adae3d 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Reflection.Context.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Reflection.Context.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Reflection.Context",
   "GUID": "1A1C34A4E1B34C938928A956EE627B1DFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-9.0/System.Resources.Extensions.json b/xml/SourceLinkInformation/net-9.0/System.Resources.Extensions.json
index 1bdcda410e4..cec3b2932a6 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Resources.Extensions.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Resources.Extensions.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Resources.Extensions",
   "GUID": "49956CCB88BF47089917A51A192DAC41FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-9.0/System.Resources.Writer.json b/xml/SourceLinkInformation/net-9.0/System.Resources.Writer.json
index 853772d4427..681d127dff0 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Resources.Writer.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Resources.Writer.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Resources.Writer",
   "GUID": "26F0A236598B4DF704B6482C8A5B09F6FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-9.0/System.Runtime.InteropServices.json b/xml/SourceLinkInformation/net-9.0/System.Runtime.InteropServices.json
index e2a28a835f6..9c280e344d9 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Runtime.InteropServices.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Runtime.InteropServices.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Runtime.InteropServices",
   "GUID": "B045599EB8FF0301AA15A6D7A04185FBFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-9.0/System.Runtime.Numerics.json b/xml/SourceLinkInformation/net-9.0/System.Runtime.Numerics.json
index 3a0b0ce6c61..d7acdc79643 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Runtime.Numerics.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Runtime.Numerics.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Runtime.Numerics",
   "GUID": "6A31A3CBBC4D77B5302120A21390A6DCFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-9.0/System.Runtime.Serialization.Primitives.json b/xml/SourceLinkInformation/net-9.0/System.Runtime.Serialization.Primitives.json
index 9b671af9d65..05df965feb4 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Runtime.Serialization.Primitives.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Runtime.Serialization.Primitives.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Runtime.Serialization.Primitives",
   "GUID": "2B69FCFA815DB963CD3C60B05692FA72FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-9.0/System.Security.Claims.json b/xml/SourceLinkInformation/net-9.0/System.Security.Claims.json
index 1b65c7689a8..bc9300daaa7 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Security.Claims.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Security.Claims.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Security.Claims",
   "GUID": "3613AAF663B326C525D5FFFCC83A4327FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-9.0/System.Security.Cryptography.Cose.json b/xml/SourceLinkInformation/net-9.0/System.Security.Cryptography.Cose.json
index d1312b5dd6e..844de73a026 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Security.Cryptography.Cose.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Security.Cryptography.Cose.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Security.Cryptography.Cose",
   "GUID": "EDDFEBF09D0743EBAD83132C15E1C83AFFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/SourceLinkInformation/net-9.0/System.Security.Cryptography.ProtectedData.json b/xml/SourceLinkInformation/net-9.0/System.Security.Cryptography.ProtectedData.json
index 1a5989f165c..d254ee3b7ce 100644
--- a/xml/SourceLinkInformation/net-9.0/System.Security.Cryptography.ProtectedData.json
+++ b/xml/SourceLinkInformation/net-9.0/System.Security.Cryptography.ProtectedData.json
@@ -1,7 +1,7 @@
 {
   "Assembly": "System.Security.Cryptography.ProtectedData",
   "GUID": "2729D3F142B14B4AAB111EE5818C6E98FFFFFFFF",
-  "Tag": "lycQgAJ2YjMOpgFb3Ng5JErT+VV2mTO7jfJQhbUXVok=",
+  "Tag": "YLvZLG4blN7mEvSsjPYkrv5LR/UBUXdSJjsg6uulm8U=",
   "Types": [
     {
       "Members": [
diff --git a/xml/System.Buffers.Text/Base64Url.xml b/xml/System.Buffers.Text/Base64Url.xml
index c193b49f70a..1b615d68d71 100644
--- a/xml/System.Buffers.Text/Base64Url.xml
+++ b/xml/System.Buffers.Text/Base64Url.xml
@@ -705,7 +705,7 @@
         <param name="bytesWritten">When this method returns, contains the number of bytes written into the output span. This can be used to slice the output for subsequent calls, if necessary. This parameter is treated as uninitialized.</param>
         <summary>Decodes the span of unicode ASCII chars represented as Base64Url into binary data.</summary>
         <returns>
-          <see langword="true" /> if bytes decoded successfully, otherwise <see langword="false" />.</returns>
+          <see langword="true" /> if bytes decoded successfully; <see langword="false" /> if <paramref name="destination" /> is too small.</returns>
         <remarks>To be added.</remarks>
         <exception cref="T:System.FormatException">
           <para>
@@ -740,7 +740,7 @@
         <param name="bytesWritten">When this method returns, contains the number of bytes written into the output span. This can be used to slice the output for subsequent calls, if necessary. This parameter is treated as uninitialized.</param>
         <summary>Decodes the span of UTF-8 encoded text represented as Base64Url into binary data.</summary>
         <returns>
-          <see langword="true" /> if bytes decoded successfully, otherwise <see langword="false" />.</returns>
+          <see langword="true" /> if bytes decoded successfully; <see langword="false" /> if <paramref name="destination" /> is too small.</returns>
         <remarks>To be added.</remarks>
         <exception cref="T:System.FormatException">
           <para>
@@ -775,7 +775,7 @@
         <param name="charsWritten">When this method returns, contains the number of chars written into the output span. This can be used to slice the output for subsequent calls, if necessary. This parameter is treated as uninitialized.</param>
         <summary>Encodes the span of binary data into unicode ASCII chars represented as Base64Url.</summary>
         <returns>
-          <see langword="true" /> if chars encoded successfully, otherwise <see langword="false" />.</returns>
+          <see langword="true" /> if chars encoded successfully; <see langword="false" /> if <paramref name="destination" /> is too small.</returns>
         <remarks>This implementation of the base64url encoding omits the optional padding characters.</remarks>
       </Docs>
     </Member>
@@ -805,7 +805,7 @@
         <param name="bytesWritten">When this method returns, contains the number of chars written into the output span. This can be used to slice the output for subsequent calls, if necessary. This parameter is treated as uninitialized.</param>
         <summary>Encodes the span of binary data into UTF-8 encoded chars represented as Base64Url.</summary>
         <returns>
-          <see langword="true" /> if bytes encoded successfully, otherwise <see langword="false" />.</returns>
+          <see langword="true" /> if bytes encoded successfully; <see langword="false" /> if <paramref name="destination" /> is too small.</returns>
         <remarks>This implementation of the base64url encoding omits the optional padding characters.</remarks>
       </Docs>
     </Member>
@@ -844,7 +844,7 @@
           <para>The encoded text output is larger than the binary data contained in the input (the operation inflates the data).</para>
         </summary>
         <returns>
-          <see langword="true" /> if bytes encoded successfully, otherwise <see langword="false" />.</returns>
+          <see langword="true" /> if bytes encoded successfully; <see langword="false" /> if <paramref name="destination" /> is too small.</returns>
         <remarks>This implementation of the base64url encoding omits the optional padding characters.</remarks>
       </Docs>
     </Member>
diff --git a/xml/System.Buffers/ArrayPool`1.xml b/xml/System.Buffers/ArrayPool`1.xml
index 845eb1e89ea..b113dd11b2c 100644
--- a/xml/System.Buffers/ArrayPool`1.xml
+++ b/xml/System.Buffers/ArrayPool`1.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of the objects that are in the resource pool.</typeparam>
diff --git a/xml/System.Buffers/BuffersExtensions.xml b/xml/System.Buffers/BuffersExtensions.xml
index 4db1ab3c3b0..bf0fa6e003c 100644
--- a/xml/System.Buffers/BuffersExtensions.xml
+++ b/xml/System.Buffers/BuffersExtensions.xml
@@ -61,12 +61,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -192,12 +186,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T[]</ReturnType>
       </ReturnValue>
@@ -257,12 +245,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Buffers/IBufferWriter`1.xml b/xml/System.Buffers/IBufferWriter`1.xml
index 7c54dd3fc63..f42fc99fe3a 100644
--- a/xml/System.Buffers/IBufferWriter`1.xml
+++ b/xml/System.Buffers/IBufferWriter`1.xml
@@ -33,12 +33,6 @@
     <TypeParameter Name="T" />
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="T">The type of the items in the <see cref="T:System.Buffers.IBufferWriter`1" />.</typeparam>
     <summary>Represents an output sink into which <typeparamref name="T" /> data can be written.</summary>
diff --git a/xml/System.Buffers/MemoryPool`1.xml b/xml/System.Buffers/MemoryPool`1.xml
index 9c06b7619f6..45cc08dee7c 100644
--- a/xml/System.Buffers/MemoryPool`1.xml
+++ b/xml/System.Buffers/MemoryPool`1.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of the items in the memory pool.</typeparam>
diff --git a/xml/System.Buffers/NIndex.xml b/xml/System.Buffers/NIndex.xml
index b50520683f2..4b531008298 100644
--- a/xml/System.Buffers/NIndex.xml
+++ b/xml/System.Buffers/NIndex.xml
@@ -151,12 +151,6 @@ int lastElement = someArray[^1]; // lastElement = 5
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -481,12 +475,6 @@ int lastElement = someArray[^1]; // lastElement = 5
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Buffers/NRange.xml b/xml/System.Buffers/NRange.xml
index cfd0bfde7ad..777bd2ffa23 100644
--- a/xml/System.Buffers/NRange.xml
+++ b/xml/System.Buffers/NRange.xml
@@ -191,12 +191,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -460,12 +454,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Buffers/ReadOnlySequence`1+Enumerator.xml b/xml/System.Buffers/ReadOnlySequence`1+Enumerator.xml
index 0f257a8e6fe..0e3bedb44c9 100644
--- a/xml/System.Buffers/ReadOnlySequence`1+Enumerator.xml
+++ b/xml/System.Buffers/ReadOnlySequence`1+Enumerator.xml
@@ -42,12 +42,6 @@
     <BaseTypeName>System.ValueType</BaseTypeName>
   </Base>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents an enumerator over a <see cref="T:System.Buffers.ReadOnlySequence`1" />.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Buffers/ReadOnlySequence`1.xml b/xml/System.Buffers/ReadOnlySequence`1.xml
index be30c6d97e6..fc95e0e315b 100644
--- a/xml/System.Buffers/ReadOnlySequence`1.xml
+++ b/xml/System.Buffers/ReadOnlySequence`1.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netstandard-2.0">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("{ToString(),raw}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("{ToString(),raw}")&gt;]</AttributeName>
diff --git a/xml/System.Buffers/SearchValues.xml b/xml/System.Buffers/SearchValues.xml
index 0dab8fcf7ab..913de0360a3 100644
--- a/xml/System.Buffers/SearchValues.xml
+++ b/xml/System.Buffers/SearchValues.xml
@@ -120,12 +120,6 @@
         <AssemblyName>System.Runtime</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Buffers.SearchValues&lt;System.String&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Buffers/SearchValues`1.xml b/xml/System.Buffers/SearchValues`1.xml
index 3fcecd5370c..83114dd711c 100644
--- a/xml/System.Buffers/SearchValues`1.xml
+++ b/xml/System.Buffers/SearchValues`1.xml
@@ -42,12 +42,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Buffers/StandardFormat.xml b/xml/System.Buffers/StandardFormat.xml
index 206357543d4..3e6e5fc63c3 100644
--- a/xml/System.Buffers/StandardFormat.xml
+++ b/xml/System.Buffers/StandardFormat.xml
@@ -182,12 +182,6 @@ Two <xref:System.Buffers.StandardFormat> instances are equal if their <xref:Syst
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -581,12 +575,6 @@ Two <xref:System.Buffers.StandardFormat> instances are unequal if their <xref:Sy
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Buffers.StandardFormat</ReturnType>
       </ReturnValue>
@@ -699,12 +687,6 @@ Two <xref:System.Buffers.StandardFormat> instances are unequal if their <xref:Sy
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.CodeDom.Compiler/GeneratedCodeAttribute.xml b/xml/System.CodeDom.Compiler/GeneratedCodeAttribute.xml
index 170c1943fbb..806886a0d4d 100644
--- a/xml/System.CodeDom.Compiler/GeneratedCodeAttribute.xml
+++ b/xml/System.CodeDom.Compiler/GeneratedCodeAttribute.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Identifies code generated by a tool. This class cannot be inherited.</summary>
diff --git a/xml/System.CodeDom.Compiler/IndentedTextWriter.xml b/xml/System.CodeDom.Compiler/IndentedTextWriter.xml
index 151cb881db1..095c996f594 100644
--- a/xml/System.CodeDom.Compiler/IndentedTextWriter.xml
+++ b/xml/System.CodeDom.Compiler/IndentedTextWriter.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a text writer that can indent new lines by a tab string token.</summary>
@@ -907,12 +903,6 @@
       <AssemblyInfo>
         <AssemblyName>System.IO</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1110,12 +1100,6 @@
       <AssemblyInfo>
         <AssemblyName>System.IO</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1215,12 +1199,6 @@
       <AssemblyInfo>
         <AssemblyName>System.IO</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1517,12 +1495,6 @@
       <AssemblyInfo>
         <AssemblyName>System.IO</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1654,12 +1626,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Runtime.Extensions</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -1955,12 +1921,6 @@
       <AssemblyInfo>
         <AssemblyName>System.IO</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2158,12 +2118,6 @@
       <AssemblyInfo>
         <AssemblyName>System.IO</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2263,12 +2217,6 @@
       <AssemblyInfo>
         <AssemblyName>System.IO</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2620,12 +2568,6 @@
       <AssemblyInfo>
         <AssemblyName>System.IO</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2792,12 +2734,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Runtime.Extensions</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -2939,12 +2875,6 @@
       <AssemblyInfo>
         <AssemblyName>System.IO</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.CodeDom/CodeTypeReference.xml b/xml/System.CodeDom/CodeTypeReference.xml
index 8dbc6f6b888..ba3913d6c86 100644
--- a/xml/System.CodeDom/CodeTypeReference.xml
+++ b/xml/System.CodeDom/CodeTypeReference.xml
@@ -170,12 +170,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="typeName" Type="System.String" />
       </Parameters>
@@ -339,12 +333,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="typeName" Type="System.String" Index="0" FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;windowsdesktop-8.0;windowsdesktop-9.0" />
         <Parameter Name="codeTypeReferenceOption" Type="System.CodeDom.CodeTypeReferenceOptions" Index="1" FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;windowsdesktop-8.0;windowsdesktop-9.0" />
@@ -461,14 +449,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Collections.Concurrent/BlockingCollection`1.xml b/xml/System.Collections.Concurrent/BlockingCollection`1.xml
index f8b4c994ed7..35148988b45 100644
--- a/xml/System.Collections.Concurrent/BlockingCollection`1.xml
+++ b/xml/System.Collections.Concurrent/BlockingCollection`1.xml
@@ -80,10 +80,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}, Type = {m_collection}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}, Type = {m_collection}")&gt;]</AttributeName>
diff --git a/xml/System.Collections.Concurrent/ConcurrentBag`1.xml b/xml/System.Collections.Concurrent/ConcurrentBag`1.xml
index 9f4ec4868f7..c2f24f2b9b2 100644
--- a/xml/System.Collections.Concurrent/ConcurrentBag`1.xml
+++ b/xml/System.Collections.Concurrent/ConcurrentBag`1.xml
@@ -83,10 +83,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
diff --git a/xml/System.Collections.Concurrent/ConcurrentDictionary`2.xml b/xml/System.Collections.Concurrent/ConcurrentDictionary`2.xml
index 4280546b0a7..3306d3915ec 100644
--- a/xml/System.Collections.Concurrent/ConcurrentDictionary`2.xml
+++ b/xml/System.Collections.Concurrent/ConcurrentDictionary`2.xml
@@ -91,10 +91,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
diff --git a/xml/System.Collections.Concurrent/ConcurrentQueue`1.xml b/xml/System.Collections.Concurrent/ConcurrentQueue`1.xml
index b1d85aee9d8..03b84070d57 100644
--- a/xml/System.Collections.Concurrent/ConcurrentQueue`1.xml
+++ b/xml/System.Collections.Concurrent/ConcurrentQueue`1.xml
@@ -83,10 +83,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
diff --git a/xml/System.Collections.Concurrent/ConcurrentStack`1.xml b/xml/System.Collections.Concurrent/ConcurrentStack`1.xml
index 0b0b0f03329..41ebdd18456 100644
--- a/xml/System.Collections.Concurrent/ConcurrentStack`1.xml
+++ b/xml/System.Collections.Concurrent/ConcurrentStack`1.xml
@@ -83,10 +83,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
diff --git a/xml/System.Collections.Concurrent/IProducerConsumerCollection`1.xml b/xml/System.Collections.Concurrent/IProducerConsumerCollection`1.xml
index 606578b5887..312955f82e8 100644
--- a/xml/System.Collections.Concurrent/IProducerConsumerCollection`1.xml
+++ b/xml/System.Collections.Concurrent/IProducerConsumerCollection`1.xml
@@ -58,12 +58,6 @@
       <InterfaceName>System.Collections.IEnumerable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="T">Specifies the type of elements in the collection.</typeparam>
     <summary>Defines methods to manipulate thread-safe collections intended for producer/consumer usage. This interface provides a unified representation for producer/consumer collections so that higher level abstractions such as <see cref="T:System.Collections.Concurrent.BlockingCollection`1" /> can use the collection as the underlying storage mechanism.</summary>
diff --git a/xml/System.Collections.Concurrent/OrderablePartitioner`1.xml b/xml/System.Collections.Concurrent/OrderablePartitioner`1.xml
index 366030111bb..3469170564d 100644
--- a/xml/System.Collections.Concurrent/OrderablePartitioner`1.xml
+++ b/xml/System.Collections.Concurrent/OrderablePartitioner`1.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TSource">Type of the elements in the collection.</typeparam>
diff --git a/xml/System.Collections.Concurrent/Partitioner.xml b/xml/System.Collections.Concurrent/Partitioner.xml
index 6276bc49ba4..8c8a4b51c65 100644
--- a/xml/System.Collections.Concurrent/Partitioner.xml
+++ b/xml/System.Collections.Concurrent/Partitioner.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides common partitioning strategies for arrays, lists, and enumerables.</summary>
diff --git a/xml/System.Collections.Concurrent/Partitioner`1.xml b/xml/System.Collections.Concurrent/Partitioner`1.xml
index f454623d722..6c2c72e5b41 100644
--- a/xml/System.Collections.Concurrent/Partitioner`1.xml
+++ b/xml/System.Collections.Concurrent/Partitioner`1.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TSource">Type of the elements in the collection.</typeparam>
diff --git a/xml/System.Collections.Frozen/FrozenDictionary.xml b/xml/System.Collections.Frozen/FrozenDictionary.xml
index ca87b88a5da..587c577a708 100644
--- a/xml/System.Collections.Frozen/FrozenDictionary.xml
+++ b/xml/System.Collections.Frozen/FrozenDictionary.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of initialization methods for instances of the <see cref="T:System.Collections.Frozen.FrozenDictionary`2" /> class.</summary>
diff --git a/xml/System.Collections.Frozen/FrozenDictionary`2+Enumerator.xml b/xml/System.Collections.Frozen/FrozenDictionary`2+Enumerator.xml
index 552f2afdb95..96b3ad2c5f1 100644
--- a/xml/System.Collections.Frozen/FrozenDictionary`2+Enumerator.xml
+++ b/xml/System.Collections.Frozen/FrozenDictionary`2+Enumerator.xml
@@ -36,12 +36,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Enumerates the elements of a <see cref="T:System.Collections.Frozen.FrozenDictionary`2" />.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Collections.Frozen/FrozenDictionary`2.xml b/xml/System.Collections.Frozen/FrozenDictionary`2.xml
index e3636ab8bf6..43bb519cb48 100644
--- a/xml/System.Collections.Frozen/FrozenDictionary`2.xml
+++ b/xml/System.Collections.Frozen/FrozenDictionary`2.xml
@@ -66,10 +66,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TKey">The type of the keys in the dictionary.</typeparam>
@@ -302,12 +298,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Frozen.FrozenDictionary&lt;TKey,TValue&gt;+Enumerator</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Frozen/FrozenSet.xml b/xml/System.Collections.Frozen/FrozenSet.xml
index a707c61a236..c562fcadb2b 100644
--- a/xml/System.Collections.Frozen/FrozenSet.xml
+++ b/xml/System.Collections.Frozen/FrozenSet.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of initialization methods for instances of the <see cref="T:System.Collections.Frozen.FrozenSet`1" /> class.</summary>
diff --git a/xml/System.Collections.Frozen/FrozenSet`1.xml b/xml/System.Collections.Frozen/FrozenSet`1.xml
index ebd150ead27..994d95708a7 100644
--- a/xml/System.Collections.Frozen/FrozenSet`1.xml
+++ b/xml/System.Collections.Frozen/FrozenSet`1.xml
@@ -68,10 +68,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of the values in this set.</typeparam>
@@ -256,12 +252,6 @@
         <AssemblyName>System.Collections.Immutable</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Frozen.FrozenSet&lt;T&gt;+AlternateLookup&lt;TAlternate&gt;</ReturnType>
         <Attributes>
@@ -303,12 +293,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Frozen.FrozenSet&lt;T&gt;+Enumerator</ReturnType>
       </ReturnValue>
@@ -939,12 +923,6 @@
         <AssemblyName>System.Collections.Immutable</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Generic/CollectionExtensions.xml b/xml/System.Collections.Generic/CollectionExtensions.xml
index bc261c85d28..29d1aed714f 100644
--- a/xml/System.Collections.Generic/CollectionExtensions.xml
+++ b/xml/System.Collections.Generic/CollectionExtensions.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides extension methods for generic collections.</summary>
@@ -266,12 +262,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TValue</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Generic/Comparer`1.xml b/xml/System.Collections.Generic/Comparer`1.xml
index f58106b6cca..38ee8107a2b 100644
--- a/xml/System.Collections.Generic/Comparer`1.xml
+++ b/xml/System.Collections.Generic/Comparer`1.xml
@@ -65,10 +65,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -189,12 +185,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Generic/Dictionary`2+AlternateLookup`1.xml b/xml/System.Collections.Generic/Dictionary`2+AlternateLookup`1.xml
index c46f8350ae6..0daa82a291d 100644
--- a/xml/System.Collections.Generic/Dictionary`2+AlternateLookup`1.xml
+++ b/xml/System.Collections.Generic/Dictionary`2+AlternateLookup`1.xml
@@ -229,7 +229,8 @@
         <param name="key">The alternate key of the value to get.</param>
         <param name="value">When this method returns, contains the value associated with the specified key, if the key is found; otherwise, the default value for the type of the value parameter.</param>
         <summary>Gets the value associated with the specified alternate key.</summary>
-        <returns><see langword="true"/> if an entry was found; otherwise, <see langword="false"/>.</returns>
+        <returns>
+          <see langword="true" /> if an entry was found; otherwise, <see langword="false" />.</returns>
         <remarks>To be added.</remarks>
         <exception cref="T:System.ArgumentNullException">
           <paramref name="key" /> is <see langword="null" />.</exception>
@@ -260,7 +261,8 @@
         <param name="actualKey">When this method returns, contains the actual key associated with the alternate key, if the key is found; otherwise, the default value for the type of the key parameter.</param>
         <param name="value">When this method returns, contains the value associated with the specified key, if the key is found; otherwise, the default value for the type of the value parameter.</param>
         <summary>Gets the value associated with the specified alternate key.</summary>
-        <returns><see langword="true"/> if an entry was found; otherwise, <see langword="false"/>.</returns>
+        <returns>
+          <see langword="true" /> if an entry was found; otherwise, <see langword="false" />.</returns>
         <remarks>To be added.</remarks>
         <exception cref="T:System.ArgumentNullException">
           <paramref name="key" /> is <see langword="null" />.</exception>
diff --git a/xml/System.Collections.Generic/Dictionary`2+Enumerator.xml b/xml/System.Collections.Generic/Dictionary`2+Enumerator.xml
index beb42130984..13807d70def 100644
--- a/xml/System.Collections.Generic/Dictionary`2+Enumerator.xml
+++ b/xml/System.Collections.Generic/Dictionary`2+Enumerator.xml
@@ -70,10 +70,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Collections.Generic/Dictionary`2+KeyCollection+Enumerator.xml b/xml/System.Collections.Generic/Dictionary`2+KeyCollection+Enumerator.xml
index 024a4a835df..503b581c339 100644
--- a/xml/System.Collections.Generic/Dictionary`2+KeyCollection+Enumerator.xml
+++ b/xml/System.Collections.Generic/Dictionary`2+KeyCollection+Enumerator.xml
@@ -142,10 +142,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TKey</ReturnType>
diff --git a/xml/System.Collections.Generic/Dictionary`2+KeyCollection.xml b/xml/System.Collections.Generic/Dictionary`2+KeyCollection.xml
index f189b5d1fdd..6d0ebcbfb42 100644
--- a/xml/System.Collections.Generic/Dictionary`2+KeyCollection.xml
+++ b/xml/System.Collections.Generic/Dictionary`2+KeyCollection.xml
@@ -80,10 +80,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
@@ -146,12 +142,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="dictionary" Type="System.Collections.Generic.Dictionary&lt;TKey,TValue&gt;" />
       </Parameters>
@@ -188,12 +178,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -243,12 +227,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Generic/Dictionary`2+ValueCollection+Enumerator.xml b/xml/System.Collections.Generic/Dictionary`2+ValueCollection+Enumerator.xml
index 40131937748..b7036ef5f9e 100644
--- a/xml/System.Collections.Generic/Dictionary`2+ValueCollection+Enumerator.xml
+++ b/xml/System.Collections.Generic/Dictionary`2+ValueCollection+Enumerator.xml
@@ -140,10 +140,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TValue</ReturnType>
diff --git a/xml/System.Collections.Generic/Dictionary`2+ValueCollection.xml b/xml/System.Collections.Generic/Dictionary`2+ValueCollection.xml
index 95f98ccff9f..059374a9abe 100644
--- a/xml/System.Collections.Generic/Dictionary`2+ValueCollection.xml
+++ b/xml/System.Collections.Generic/Dictionary`2+ValueCollection.xml
@@ -80,10 +80,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
@@ -146,12 +142,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="dictionary" Type="System.Collections.Generic.Dictionary&lt;TKey,TValue&gt;" />
       </Parameters>
@@ -207,12 +197,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Generic/Dictionary`2.xml b/xml/System.Collections.Generic/Dictionary`2.xml
index 70550e4d8dc..ed01c459cef 100644
--- a/xml/System.Collections.Generic/Dictionary`2.xml
+++ b/xml/System.Collections.Generic/Dictionary`2.xml
@@ -105,10 +105,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
@@ -1303,10 +1299,10 @@
       <Parameters />
       <Docs>
         <typeparam name="TAlternateKey">The alternate type of a key for performing lookups.</typeparam>
-        <summary>Gets an instance of a type that can be used to perform operations on the current <see cref="T:System.Collections.Generic.Dictionary`2"/> using a <typeparamref name="TAlternateKey"/> as a key instead of a <typeparamref name="TKey"/>.</summary>
+        <summary>Gets an instance of a type that can be used to perform operations on the current <see cref="T:System.Collections.Generic.Dictionary`2" /> using a <typeparamref name="TAlternateKey" /> as a key instead of a <typeparamref name="TKey" />.</summary>
         <returns>The created lookup instance.</returns>
-        <remarks>The dictionary must use a comparer that implements <see cref="T:System.Collections.Generic.IAlternateEqualityComparer`2"/> with <typeparamref name="TAlternateKey"/> and <typeparamref name="TKey"/>. If it doesn't, an exception is thrown.</remarks>
-        <exception cref="T:System.InvalidOperationException">The dictionary's comparer is not compatible with <typeparamref name="TAlternateKey"/>.</exception>
+        <remarks>The dictionary must use a comparer that implements <see cref="T:System.Collections.Generic.IAlternateEqualityComparer`2" /> with <typeparamref name="TAlternateKey" /> and <typeparamref name="TKey" />. If it doesn't, an exception is thrown.</remarks>
+        <exception cref="T:System.InvalidOperationException">The dictionary's comparer is not compatible with <typeparamref name="TAlternateKey" />.</exception>
       </Docs>
     </Member>
     <Member MemberName="GetEnumerator">
@@ -1652,12 +1648,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3413,9 +3403,10 @@ Unlike the <xref:System.Collections.Generic.Dictionary%602.Add%2A> method, this
       <Docs>
         <typeparam name="TAlternateKey">The alternate type of a key for performing lookups.</typeparam>
         <param name="lookup">The created lookup instance when the method returns true, or a default instance that should not be used if the method returns false.</param>
-        <summary>Gets an instance of a type that can be used to perform operations on the current <see cref="T:System.Collections.Generic.Dictionary`2"/> using a <typeparamref name="TAlternateKey"/> as a key instead of a <typeparamref name="TKey"/>.</summary>
-        <returns><see langword="true" /> if a lookup could be created; otherwise, <see langword="false" />.</returns>
-        <remarks>The dictionary must use a comparer that implements <see cref="T:System.Collections.Generic.IAlternateEqualityComparer`2"/> with <typeparamref name="TAlternateKey"/> and <typeparamref name="TKey"/>. If it doesn't, the method returns <see langword="false" />.</remarks>
+        <summary>Gets an instance of a type that can be used to perform operations on the current <see cref="T:System.Collections.Generic.Dictionary`2" /> using a <typeparamref name="TAlternateKey" /> as a key instead of a <typeparamref name="TKey" />.</summary>
+        <returns>
+          <see langword="true" /> if a lookup could be created; otherwise, <see langword="false" />.</returns>
+        <remarks>The dictionary must use a comparer that implements <see cref="T:System.Collections.Generic.IAlternateEqualityComparer`2" /> with <typeparamref name="TAlternateKey" /> and <typeparamref name="TKey" />. If it doesn't, the method returns <see langword="false" />.</remarks>
       </Docs>
     </Member>
     <Member MemberName="TryGetValue">
diff --git a/xml/System.Collections.Generic/EqualityComparer`1.xml b/xml/System.Collections.Generic/EqualityComparer`1.xml
index ebf6b8f4815..507a7439469 100644
--- a/xml/System.Collections.Generic/EqualityComparer`1.xml
+++ b/xml/System.Collections.Generic/EqualityComparer`1.xml
@@ -65,10 +65,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -297,12 +293,6 @@ In .NET 8 and later versions, we recommend using the <xref:System.Collections.Ge
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Generic/HashSet`1+Enumerator.xml b/xml/System.Collections.Generic/HashSet`1+Enumerator.xml
index e60d3948948..95f2f8e008b 100644
--- a/xml/System.Collections.Generic/HashSet`1+Enumerator.xml
+++ b/xml/System.Collections.Generic/HashSet`1+Enumerator.xml
@@ -64,10 +64,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -139,10 +135,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Collections.Generic/HashSet`1.xml b/xml/System.Collections.Generic/HashSet`1.xml
index 59bfac3bab4..fae2391a39d 100644
--- a/xml/System.Collections.Generic/HashSet`1.xml
+++ b/xml/System.Collections.Generic/HashSet`1.xml
@@ -108,10 +108,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
@@ -1289,12 +1285,6 @@ The following example demonstrates how to merge two disparate sets. This example
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.HashSet&lt;T&gt;+AlternateLookup&lt;TAlternate&gt;</ReturnType>
         <Attributes>
@@ -1868,12 +1858,6 @@ The following example demonstrates how to merge two disparate sets. This example
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2601,12 +2585,6 @@ The following example demonstrates how to merge two disparate sets. This example
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Generic/IAlternateEqualityComparer`2.xml b/xml/System.Collections.Generic/IAlternateEqualityComparer`2.xml
index 0d5032bb580..d2584b31258 100644
--- a/xml/System.Collections.Generic/IAlternateEqualityComparer`2.xml
+++ b/xml/System.Collections.Generic/IAlternateEqualityComparer`2.xml
@@ -31,12 +31,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TAlternate">The alternate type to compare.</typeparam>
     <typeparam name="T">The type to compare.</typeparam>
diff --git a/xml/System.Collections.Generic/IAsyncEnumerable`1.xml b/xml/System.Collections.Generic/IAsyncEnumerable`1.xml
index db857c0fd4a..bc3169d7de7 100644
--- a/xml/System.Collections.Generic/IAsyncEnumerable`1.xml
+++ b/xml/System.Collections.Generic/IAsyncEnumerable`1.xml
@@ -46,12 +46,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="T">The type of values to enumerate.</typeparam>
     <summary>Exposes an enumerator that provides asynchronous iteration over values of a specified type.</summary>
diff --git a/xml/System.Collections.Generic/IAsyncEnumerator`1.xml b/xml/System.Collections.Generic/IAsyncEnumerator`1.xml
index f84b89dbfc7..8f8dd98a978 100644
--- a/xml/System.Collections.Generic/IAsyncEnumerator`1.xml
+++ b/xml/System.Collections.Generic/IAsyncEnumerator`1.xml
@@ -86,10 +86,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
diff --git a/xml/System.Collections.Generic/ICollection`1.xml b/xml/System.Collections.Generic/ICollection`1.xml
index 74fb0e60beb..dcd5ac8806a 100644
--- a/xml/System.Collections.Generic/ICollection`1.xml
+++ b/xml/System.Collections.Generic/ICollection`1.xml
@@ -59,12 +59,6 @@
       <InterfaceName>System.Collections.IEnumerable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="T">The type of the elements in the collection.</typeparam>
     <summary>Defines methods to manipulate generic collections.</summary>
diff --git a/xml/System.Collections.Generic/IComparer`1.xml b/xml/System.Collections.Generic/IComparer`1.xml
index 8ee39c6f327..a25571d9f1b 100644
--- a/xml/System.Collections.Generic/IComparer`1.xml
+++ b/xml/System.Collections.Generic/IComparer`1.xml
@@ -52,12 +52,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="T">The type of objects to compare.</typeparam>
     <summary>Defines a method that a type implements to compare two objects.</summary>
diff --git a/xml/System.Collections.Generic/IDictionary`2.xml b/xml/System.Collections.Generic/IDictionary`2.xml
index c834996e295..9c5e6d6d4e0 100644
--- a/xml/System.Collections.Generic/IDictionary`2.xml
+++ b/xml/System.Collections.Generic/IDictionary`2.xml
@@ -73,12 +73,6 @@
       <InterfaceName>System.Collections.IEnumerable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TKey">The type of keys in the dictionary.</typeparam>
     <typeparam name="TValue">The type of values in the dictionary.</typeparam>
diff --git a/xml/System.Collections.Generic/IEnumerable`1.xml b/xml/System.Collections.Generic/IEnumerable`1.xml
index bc447bbfe38..716197188bb 100644
--- a/xml/System.Collections.Generic/IEnumerable`1.xml
+++ b/xml/System.Collections.Generic/IEnumerable`1.xml
@@ -131,12 +131,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IEnumerator&lt;T&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Generic/IEnumerator`1.xml b/xml/System.Collections.Generic/IEnumerator`1.xml
index 8053fec05e6..78b95cdfe86 100644
--- a/xml/System.Collections.Generic/IEnumerator`1.xml
+++ b/xml/System.Collections.Generic/IEnumerator`1.xml
@@ -152,10 +152,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
diff --git a/xml/System.Collections.Generic/IEqualityComparer`1.xml b/xml/System.Collections.Generic/IEqualityComparer`1.xml
index 785efc22bed..da806bdbaac 100644
--- a/xml/System.Collections.Generic/IEqualityComparer`1.xml
+++ b/xml/System.Collections.Generic/IEqualityComparer`1.xml
@@ -52,12 +52,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="T">The type of objects to compare.</typeparam>
     <summary>Defines methods to support the comparison of objects for equality.</summary>
@@ -200,12 +194,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Generic/IList`1.xml b/xml/System.Collections.Generic/IList`1.xml
index ad51271178e..6b92e09d561 100644
--- a/xml/System.Collections.Generic/IList`1.xml
+++ b/xml/System.Collections.Generic/IList`1.xml
@@ -62,12 +62,6 @@
       <InterfaceName>System.Collections.IEnumerable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="T">The type of elements in the list.</typeparam>
     <summary>Represents a collection of objects that can be individually accessed by index.</summary>
diff --git a/xml/System.Collections.Generic/IReadOnlyDictionary`2.xml b/xml/System.Collections.Generic/IReadOnlyDictionary`2.xml
index 8bb78b510c1..9140727f797 100644
--- a/xml/System.Collections.Generic/IReadOnlyDictionary`2.xml
+++ b/xml/System.Collections.Generic/IReadOnlyDictionary`2.xml
@@ -73,12 +73,6 @@
       <InterfaceName>System.Collections.IEnumerable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TKey">The type of keys in the read-only dictionary.</typeparam>
     <typeparam name="TValue">The type of values in the read-only dictionary.</typeparam>
diff --git a/xml/System.Collections.Generic/IReadOnlyList`1.xml b/xml/System.Collections.Generic/IReadOnlyList`1.xml
index 36db3086a6f..b50c79b936c 100644
--- a/xml/System.Collections.Generic/IReadOnlyList`1.xml
+++ b/xml/System.Collections.Generic/IReadOnlyList`1.xml
@@ -65,12 +65,6 @@
       <InterfaceName>System.Collections.IEnumerable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="T">The type of elements in the read-only list.</typeparam>
     <summary>Represents a read-only collection of elements that can be accessed by index.</summary>
diff --git a/xml/System.Collections.Generic/IReadOnlySet`1.xml b/xml/System.Collections.Generic/IReadOnlySet`1.xml
index bc1f30001a4..ebdc25b60c3 100644
--- a/xml/System.Collections.Generic/IReadOnlySet`1.xml
+++ b/xml/System.Collections.Generic/IReadOnlySet`1.xml
@@ -35,12 +35,6 @@
       <InterfaceName>System.Collections.IEnumerable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="T">The type of elements in the set.</typeparam>
     <summary>Provides a readonly abstraction of a set.</summary>
diff --git a/xml/System.Collections.Generic/ISet`1.xml b/xml/System.Collections.Generic/ISet`1.xml
index 6541d6d0265..47c726cd081 100644
--- a/xml/System.Collections.Generic/ISet`1.xml
+++ b/xml/System.Collections.Generic/ISet`1.xml
@@ -61,12 +61,6 @@
       <InterfaceName>System.Collections.IEnumerable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="T">The type of elements in the set.</typeparam>
     <summary>Provides the base interface for the abstraction of sets.</summary>
diff --git a/xml/System.Collections.Generic/KeyNotFoundException.xml b/xml/System.Collections.Generic/KeyNotFoundException.xml
index 491d63a3ba6..0a729b436db 100644
--- a/xml/System.Collections.Generic/KeyNotFoundException.xml
+++ b/xml/System.Collections.Generic/KeyNotFoundException.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -254,10 +250,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Collections.Generic/KeyValuePair.xml b/xml/System.Collections.Generic/KeyValuePair.xml
index c9fd80b377a..8887cdbbb67 100644
--- a/xml/System.Collections.Generic/KeyValuePair.xml
+++ b/xml/System.Collections.Generic/KeyValuePair.xml
@@ -59,12 +59,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.KeyValuePair&lt;TKey,TValue&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Generic/KeyValuePair`2.xml b/xml/System.Collections.Generic/KeyValuePair`2.xml
index 3855bba39d3..75c1905c322 100644
--- a/xml/System.Collections.Generic/KeyValuePair`2.xml
+++ b/xml/System.Collections.Generic/KeyValuePair`2.xml
@@ -73,10 +73,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Collections.Generic/LinkedListNode`1.xml b/xml/System.Collections.Generic/LinkedListNode`1.xml
index c1d5b5c0e3c..c0de5321694 100644
--- a/xml/System.Collections.Generic/LinkedListNode`1.xml
+++ b/xml/System.Collections.Generic/LinkedListNode`1.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.Collections.Generic/LinkedList`1+Enumerator.xml b/xml/System.Collections.Generic/LinkedList`1+Enumerator.xml
index ac7996835f4..af7f2869b31 100644
--- a/xml/System.Collections.Generic/LinkedList`1+Enumerator.xml
+++ b/xml/System.Collections.Generic/LinkedList`1+Enumerator.xml
@@ -75,10 +75,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -152,10 +148,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Collections.Generic/LinkedList`1.xml b/xml/System.Collections.Generic/LinkedList`1.xml
index 52e3b2439b3..98cc28428b6 100644
--- a/xml/System.Collections.Generic/LinkedList`1.xml
+++ b/xml/System.Collections.Generic/LinkedList`1.xml
@@ -95,10 +95,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
@@ -1640,12 +1636,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Generic/List`1+Enumerator.xml b/xml/System.Collections.Generic/List`1+Enumerator.xml
index 7c07da6b4b0..bacd00d73fc 100644
--- a/xml/System.Collections.Generic/List`1+Enumerator.xml
+++ b/xml/System.Collections.Generic/List`1+Enumerator.xml
@@ -64,10 +64,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -141,10 +137,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
diff --git a/xml/System.Collections.Generic/List`1.xml b/xml/System.Collections.Generic/List`1.xml
index de829efea0b..834b50754aa 100644
--- a/xml/System.Collections.Generic/List`1.xml
+++ b/xml/System.Collections.Generic/List`1.xml
@@ -90,10 +90,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
diff --git a/xml/System.Collections.Generic/OrderedDictionary`2+Enumerator.xml b/xml/System.Collections.Generic/OrderedDictionary`2+Enumerator.xml
index 84a2e8d47b1..cbee64cabf1 100644
--- a/xml/System.Collections.Generic/OrderedDictionary`2+Enumerator.xml
+++ b/xml/System.Collections.Generic/OrderedDictionary`2+Enumerator.xml
@@ -37,12 +37,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Enumerates the elements of a <see cref="T:System.Collections.Generic.OrderedDictionary`2" />.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Collections.Generic/OrderedDictionary`2+KeyCollection+Enumerator.xml b/xml/System.Collections.Generic/OrderedDictionary`2+KeyCollection+Enumerator.xml
index e603f591af4..03d9f57f32e 100644
--- a/xml/System.Collections.Generic/OrderedDictionary`2+KeyCollection+Enumerator.xml
+++ b/xml/System.Collections.Generic/OrderedDictionary`2+KeyCollection+Enumerator.xml
@@ -63,10 +63,6 @@
           <AttributeName Language="C#">[get: System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TKey</ReturnType>
diff --git a/xml/System.Collections.Generic/OrderedDictionary`2+KeyCollection.xml b/xml/System.Collections.Generic/OrderedDictionary`2+KeyCollection.xml
index e268bb3b9d4..f8801f78fdb 100644
--- a/xml/System.Collections.Generic/OrderedDictionary`2+KeyCollection.xml
+++ b/xml/System.Collections.Generic/OrderedDictionary`2+KeyCollection.xml
@@ -58,12 +58,6 @@
       <InterfaceName>System.Collections.IList</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents the collection of keys in a <see cref="T:System.Collections.Generic.OrderedDictionary`2" />.</summary>
     <remarks>To be added.</remarks>
@@ -84,12 +78,6 @@
         <AssemblyName>System.Collections</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -120,12 +108,6 @@
         <AssemblyName>System.Collections</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Generic/OrderedDictionary`2+ValueCollection+Enumerator.xml b/xml/System.Collections.Generic/OrderedDictionary`2+ValueCollection+Enumerator.xml
index ff8134eb50f..3e0136c1759 100644
--- a/xml/System.Collections.Generic/OrderedDictionary`2+ValueCollection+Enumerator.xml
+++ b/xml/System.Collections.Generic/OrderedDictionary`2+ValueCollection+Enumerator.xml
@@ -63,10 +63,6 @@
           <AttributeName Language="C#">[get: System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TValue</ReturnType>
diff --git a/xml/System.Collections.Generic/OrderedDictionary`2+ValueCollection.xml b/xml/System.Collections.Generic/OrderedDictionary`2+ValueCollection.xml
index 2eb0440a24a..07a5d9c106b 100644
--- a/xml/System.Collections.Generic/OrderedDictionary`2+ValueCollection.xml
+++ b/xml/System.Collections.Generic/OrderedDictionary`2+ValueCollection.xml
@@ -58,12 +58,6 @@
       <InterfaceName>System.Collections.IList</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents the collection of values in a <see cref="T:System.Collections.Generic.OrderedDictionary`2" />.</summary>
     <remarks>To be added.</remarks>
@@ -84,12 +78,6 @@
         <AssemblyName>System.Collections</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Generic/OrderedDictionary`2.xml b/xml/System.Collections.Generic/OrderedDictionary`2.xml
index 47013c74131..c28903a1853 100644
--- a/xml/System.Collections.Generic/OrderedDictionary`2.xml
+++ b/xml/System.Collections.Generic/OrderedDictionary`2.xml
@@ -72,10 +72,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TKey">The type of the keys in the dictionary.</typeparam>
diff --git a/xml/System.Collections.Generic/PriorityQueue`2+UnorderedItemsCollection.xml b/xml/System.Collections.Generic/PriorityQueue`2+UnorderedItemsCollection.xml
index 179c006a696..44853901b50 100644
--- a/xml/System.Collections.Generic/PriorityQueue`2+UnorderedItemsCollection.xml
+++ b/xml/System.Collections.Generic/PriorityQueue`2+UnorderedItemsCollection.xml
@@ -50,12 +50,6 @@
       <InterfaceName>System.Collections.IEnumerable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Enumerates the contents of a <see cref="T:System.Collections.Generic.PriorityQueue`2" />, without any ordering guarantees.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Collections.Generic/PriorityQueue`2.xml b/xml/System.Collections.Generic/PriorityQueue`2.xml
index 8c0c0d2634e..49831335d3f 100644
--- a/xml/System.Collections.Generic/PriorityQueue`2.xml
+++ b/xml/System.Collections.Generic/PriorityQueue`2.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TElement">Specifies the type of elements in the queue.</typeparam>
diff --git a/xml/System.Collections.Generic/Queue`1+Enumerator.xml b/xml/System.Collections.Generic/Queue`1+Enumerator.xml
index 69fe6a13095..3fcadbad4ab 100644
--- a/xml/System.Collections.Generic/Queue`1+Enumerator.xml
+++ b/xml/System.Collections.Generic/Queue`1+Enumerator.xml
@@ -64,10 +64,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -141,10 +137,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
diff --git a/xml/System.Collections.Generic/Queue`1.xml b/xml/System.Collections.Generic/Queue`1.xml
index f77df56c515..0d4941c9f5e 100644
--- a/xml/System.Collections.Generic/Queue`1.xml
+++ b/xml/System.Collections.Generic/Queue`1.xml
@@ -77,10 +77,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
diff --git a/xml/System.Collections.Generic/ReferenceEqualityComparer.xml b/xml/System.Collections.Generic/ReferenceEqualityComparer.xml
index b488408337f..4debc32a43c 100644
--- a/xml/System.Collections.Generic/ReferenceEqualityComparer.xml
+++ b/xml/System.Collections.Generic/ReferenceEqualityComparer.xml
@@ -57,12 +57,6 @@ The <xref:System.Collections.Generic.ReferenceEqualityComparer> type cannot be i
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -108,12 +102,6 @@ This API is a wrapper around <xref:System.Object.ReferenceEquals(System.Object,S
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -157,10 +145,6 @@ This API is a wrapper around <xref:System.Runtime.CompilerServices.RuntimeHelper
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.ReferenceEqualityComparer</ReturnType>
diff --git a/xml/System.Collections.Generic/SortedDictionary`2+Enumerator.xml b/xml/System.Collections.Generic/SortedDictionary`2+Enumerator.xml
index 2316dc398a9..afd3e900397 100644
--- a/xml/System.Collections.Generic/SortedDictionary`2+Enumerator.xml
+++ b/xml/System.Collections.Generic/SortedDictionary`2+Enumerator.xml
@@ -68,12 +68,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Enumerates the elements of a <see cref="T:System.Collections.Generic.SortedDictionary`2" />.</summary>
     <remarks>
diff --git a/xml/System.Collections.Generic/SortedDictionary`2+KeyCollection+Enumerator.xml b/xml/System.Collections.Generic/SortedDictionary`2+KeyCollection+Enumerator.xml
index 4e17609371c..915e336432a 100644
--- a/xml/System.Collections.Generic/SortedDictionary`2+KeyCollection+Enumerator.xml
+++ b/xml/System.Collections.Generic/SortedDictionary`2+KeyCollection+Enumerator.xml
@@ -133,10 +133,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TKey</ReturnType>
diff --git a/xml/System.Collections.Generic/SortedDictionary`2+KeyCollection.xml b/xml/System.Collections.Generic/SortedDictionary`2+KeyCollection.xml
index 68eabea875b..cbe511052eb 100644
--- a/xml/System.Collections.Generic/SortedDictionary`2+KeyCollection.xml
+++ b/xml/System.Collections.Generic/SortedDictionary`2+KeyCollection.xml
@@ -80,10 +80,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
@@ -146,12 +142,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="dictionary" Type="System.Collections.Generic.SortedDictionary&lt;TKey,TValue&gt;" />
       </Parameters>
@@ -188,12 +178,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -243,12 +227,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Generic/SortedDictionary`2+ValueCollection+Enumerator.xml b/xml/System.Collections.Generic/SortedDictionary`2+ValueCollection+Enumerator.xml
index 539a043b31a..fae4fd60a35 100644
--- a/xml/System.Collections.Generic/SortedDictionary`2+ValueCollection+Enumerator.xml
+++ b/xml/System.Collections.Generic/SortedDictionary`2+ValueCollection+Enumerator.xml
@@ -133,10 +133,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TValue</ReturnType>
diff --git a/xml/System.Collections.Generic/SortedDictionary`2+ValueCollection.xml b/xml/System.Collections.Generic/SortedDictionary`2+ValueCollection.xml
index e0faac36039..676f73e2837 100644
--- a/xml/System.Collections.Generic/SortedDictionary`2+ValueCollection.xml
+++ b/xml/System.Collections.Generic/SortedDictionary`2+ValueCollection.xml
@@ -80,10 +80,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
@@ -146,12 +142,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="dictionary" Type="System.Collections.Generic.SortedDictionary&lt;TKey,TValue&gt;" />
       </Parameters>
@@ -207,12 +197,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Generic/SortedDictionary`2.xml b/xml/System.Collections.Generic/SortedDictionary`2.xml
index a9306e9d37a..da35c286feb 100644
--- a/xml/System.Collections.Generic/SortedDictionary`2.xml
+++ b/xml/System.Collections.Generic/SortedDictionary`2.xml
@@ -93,10 +93,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
diff --git a/xml/System.Collections.Generic/SortedList`2.xml b/xml/System.Collections.Generic/SortedList`2.xml
index 50376343758..e0f9f3cc4f2 100644
--- a/xml/System.Collections.Generic/SortedList`2.xml
+++ b/xml/System.Collections.Generic/SortedList`2.xml
@@ -90,10 +90,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
diff --git a/xml/System.Collections.Generic/SortedSet`1+Enumerator.xml b/xml/System.Collections.Generic/SortedSet`1+Enumerator.xml
index ed3ddef097f..08106e2448c 100644
--- a/xml/System.Collections.Generic/SortedSet`1+Enumerator.xml
+++ b/xml/System.Collections.Generic/SortedSet`1+Enumerator.xml
@@ -74,10 +74,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -148,10 +144,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
diff --git a/xml/System.Collections.Generic/SortedSet`1.xml b/xml/System.Collections.Generic/SortedSet`1.xml
index 1347e8330d5..2d3155b0aae 100644
--- a/xml/System.Collections.Generic/SortedSet`1.xml
+++ b/xml/System.Collections.Generic/SortedSet`1.xml
@@ -105,10 +105,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
@@ -1228,12 +1224,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.SortedSet&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1627,10 +1617,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
@@ -1685,10 +1671,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
@@ -1736,12 +1718,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Generic/Stack`1+Enumerator.xml b/xml/System.Collections.Generic/Stack`1+Enumerator.xml
index 4365e91b865..b8ec2993ee3 100644
--- a/xml/System.Collections.Generic/Stack`1+Enumerator.xml
+++ b/xml/System.Collections.Generic/Stack`1+Enumerator.xml
@@ -64,10 +64,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -141,10 +137,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
diff --git a/xml/System.Collections.Generic/Stack`1.xml b/xml/System.Collections.Generic/Stack`1.xml
index 2d5f092b9b7..a762933b9e1 100644
--- a/xml/System.Collections.Generic/Stack`1.xml
+++ b/xml/System.Collections.Generic/Stack`1.xml
@@ -77,10 +77,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
diff --git a/xml/System.Collections.Immutable/IImmutableDictionary`2.xml b/xml/System.Collections.Immutable/IImmutableDictionary`2.xml
index 295f3b29be2..da441067a0b 100644
--- a/xml/System.Collections.Immutable/IImmutableDictionary`2.xml
+++ b/xml/System.Collections.Immutable/IImmutableDictionary`2.xml
@@ -58,12 +58,6 @@
       <InterfaceName>System.Collections.IEnumerable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TKey">The type of keys in the dictionary.</typeparam>
     <typeparam name="TValue">The type of values in the dictionary.</typeparam>
diff --git a/xml/System.Collections.Immutable/IImmutableList`1.xml b/xml/System.Collections.Immutable/IImmutableList`1.xml
index 46993d8ec31..b30c1d5a0ba 100644
--- a/xml/System.Collections.Immutable/IImmutableList`1.xml
+++ b/xml/System.Collections.Immutable/IImmutableList`1.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.CollectionBuilder(typeof(System.Collections.Immutable.ImmutableList), "Create")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.CollectionBuilder(typeof(System.Collections.Immutable.ImmutableList), "Create")&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of elements in the list.</typeparam>
diff --git a/xml/System.Collections.Immutable/IImmutableQueue`1.xml b/xml/System.Collections.Immutable/IImmutableQueue`1.xml
index 6230e6a60d8..c053898f0cb 100644
--- a/xml/System.Collections.Immutable/IImmutableQueue`1.xml
+++ b/xml/System.Collections.Immutable/IImmutableQueue`1.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.CollectionBuilder(typeof(System.Collections.Immutable.ImmutableQueue), "Create")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.CollectionBuilder(typeof(System.Collections.Immutable.ImmutableQueue), "Create")&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of elements in the queue.</typeparam>
diff --git a/xml/System.Collections.Immutable/IImmutableSet`1.xml b/xml/System.Collections.Immutable/IImmutableSet`1.xml
index 9413226b831..dd425f45f92 100644
--- a/xml/System.Collections.Immutable/IImmutableSet`1.xml
+++ b/xml/System.Collections.Immutable/IImmutableSet`1.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.CollectionBuilder(typeof(System.Collections.Immutable.ImmutableHashSet), "Create")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.CollectionBuilder(typeof(System.Collections.Immutable.ImmutableHashSet), "Create")&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of element stored in the set.</typeparam>
diff --git a/xml/System.Collections.Immutable/IImmutableStack`1.xml b/xml/System.Collections.Immutable/IImmutableStack`1.xml
index 841441d237b..63d79453829 100644
--- a/xml/System.Collections.Immutable/IImmutableStack`1.xml
+++ b/xml/System.Collections.Immutable/IImmutableStack`1.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.CollectionBuilder(typeof(System.Collections.Immutable.ImmutableStack), "Create")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.CollectionBuilder(typeof(System.Collections.Immutable.ImmutableStack), "Create")&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of elements in the stack.</typeparam>
diff --git a/xml/System.Collections.Immutable/ImmutableArray.xml b/xml/System.Collections.Immutable/ImmutableArray.xml
index 9904246fd4b..e62ce006415 100644
--- a/xml/System.Collections.Immutable/ImmutableArray.xml
+++ b/xml/System.Collections.Immutable/ImmutableArray.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods for creating an array that is immutable; meaning it cannot be changed once it is created.  
@@ -335,12 +331,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -369,12 +359,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -420,12 +404,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -517,12 +495,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -619,12 +591,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -967,12 +933,6 @@ This overload allows helper methods or custom builder classes to efficiently avo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;TResult&gt;</ReturnType>
       </ReturnValue>
@@ -1036,12 +996,6 @@ This overload allows helper methods or custom builder classes to efficiently avo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;TResult&gt;</ReturnType>
       </ReturnValue>
@@ -1109,12 +1063,6 @@ This overload allows helper methods or custom builder classes to efficiently avo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;TResult&gt;</ReturnType>
       </ReturnValue>
@@ -1189,12 +1137,6 @@ This overload allows helper methods or custom builder classes to efficiently avo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;TResult&gt;</ReturnType>
       </ReturnValue>
@@ -1265,12 +1207,6 @@ This overload allows helper methods or custom builder classes to efficiently avo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1308,12 +1244,6 @@ This overload allows helper methods or custom builder classes to efficiently avo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;T&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Immutable/ImmutableArray`1+Builder.xml b/xml/System.Collections.Immutable/ImmutableArray`1+Builder.xml
index 6e737370a16..3031584d323 100644
--- a/xml/System.Collections.Immutable/ImmutableArray`1+Builder.xml
+++ b/xml/System.Collections.Immutable/ImmutableArray`1+Builder.xml
@@ -403,12 +403,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -497,12 +491,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Immutable/ImmutableArray`1.xml b/xml/System.Collections.Immutable/ImmutableArray`1.xml
index 613073686ab..acac08a3333 100644
--- a/xml/System.Collections.Immutable/ImmutableArray`1.xml
+++ b/xml/System.Collections.Immutable/ImmutableArray`1.xml
@@ -92,10 +92,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of element stored by the array.</typeparam>
@@ -408,12 +404,6 @@ This example shows how to create an immutable array using <xref:System.Collectio
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -503,12 +493,6 @@ This example shows how to create an immutable array using <xref:System.Collectio
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;TOther&gt;</ReturnType>
       </ReturnValue>
@@ -669,12 +653,6 @@ This example shows how to create an immutable array using <xref:System.Collectio
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;TOther&gt;</ReturnType>
       </ReturnValue>
@@ -721,12 +699,6 @@ This example shows how to create an immutable array using <xref:System.Collectio
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1119,12 +1091,6 @@ This example shows how to create an immutable array using <xref:System.Collectio
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1167,12 +1133,6 @@ This example shows how to create an immutable array using <xref:System.Collectio
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;T&gt;+Enumerator</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Immutable/ImmutableDictionary.xml b/xml/System.Collections.Immutable/ImmutableDictionary.xml
index 08b5d82b8da..450a7409c45 100644
--- a/xml/System.Collections.Immutable/ImmutableDictionary.xml
+++ b/xml/System.Collections.Immutable/ImmutableDictionary.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of initialization methods for instances of the <see cref="T:System.Collections.Immutable.ImmutableDictionary`2" /> class.  
diff --git a/xml/System.Collections.Immutable/ImmutableDictionary`2+Builder.xml b/xml/System.Collections.Immutable/ImmutableDictionary`2+Builder.xml
index 7ac31281d0f..5ffbaa0a2bf 100644
--- a/xml/System.Collections.Immutable/ImmutableDictionary`2+Builder.xml
+++ b/xml/System.Collections.Immutable/ImmutableDictionary`2+Builder.xml
@@ -434,12 +434,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableDictionary&lt;TKey,TValue&gt;+Enumerator</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Immutable/ImmutableDictionary`2+Enumerator.xml b/xml/System.Collections.Immutable/ImmutableDictionary`2+Enumerator.xml
index aec2681322f..77f40525866 100644
--- a/xml/System.Collections.Immutable/ImmutableDictionary`2+Enumerator.xml
+++ b/xml/System.Collections.Immutable/ImmutableDictionary`2+Enumerator.xml
@@ -46,12 +46,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Enumerates the contents of the immutable dictionary without allocating any memory.  
   
diff --git a/xml/System.Collections.Immutable/ImmutableDictionary`2.xml b/xml/System.Collections.Immutable/ImmutableDictionary`2.xml
index ad7785bae66..843bbdd40c7 100644
--- a/xml/System.Collections.Immutable/ImmutableDictionary`2.xml
+++ b/xml/System.Collections.Immutable/ImmutableDictionary`2.xml
@@ -81,10 +81,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TKey">The type of the keys in the dictionary.</typeparam>
@@ -437,12 +433,6 @@ This example shows how to create a new immutable dictionary by adding and removi
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableDictionary&lt;TKey,TValue&gt;+Enumerator</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Immutable/ImmutableHashSet.xml b/xml/System.Collections.Immutable/ImmutableHashSet.xml
index 84ab6afca22..adfcdff641a 100644
--- a/xml/System.Collections.Immutable/ImmutableHashSet.xml
+++ b/xml/System.Collections.Immutable/ImmutableHashSet.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of initialization methods for instances of the <see cref="T:System.Collections.Immutable.ImmutableHashSet`1" /> class.  
diff --git a/xml/System.Collections.Immutable/ImmutableHashSet`1+Builder.xml b/xml/System.Collections.Immutable/ImmutableHashSet`1+Builder.xml
index 2b1f150adb3..ecc797b433a 100644
--- a/xml/System.Collections.Immutable/ImmutableHashSet`1+Builder.xml
+++ b/xml/System.Collections.Immutable/ImmutableHashSet`1+Builder.xml
@@ -276,12 +276,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableHashSet&lt;T&gt;+Enumerator</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Immutable/ImmutableHashSet`1+Enumerator.xml b/xml/System.Collections.Immutable/ImmutableHashSet`1+Enumerator.xml
index 8544cbc7696..fab906dcfe3 100644
--- a/xml/System.Collections.Immutable/ImmutableHashSet`1+Enumerator.xml
+++ b/xml/System.Collections.Immutable/ImmutableHashSet`1+Enumerator.xml
@@ -45,12 +45,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Enumerates the contents of the immutable hash set without allocating any memory.  
   
@@ -88,10 +82,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
diff --git a/xml/System.Collections.Immutable/ImmutableHashSet`1.xml b/xml/System.Collections.Immutable/ImmutableHashSet`1.xml
index 3b635756db8..db2102895f0 100644
--- a/xml/System.Collections.Immutable/ImmutableHashSet`1.xml
+++ b/xml/System.Collections.Immutable/ImmutableHashSet`1.xml
@@ -87,10 +87,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of elements in the hash set.</typeparam>
@@ -348,12 +344,6 @@ This example shows how use set operations on immutable hash sets:
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableHashSet&lt;T&gt;+Enumerator</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Immutable/ImmutableInterlocked.xml b/xml/System.Collections.Immutable/ImmutableInterlocked.xml
index ed6cf218b26..246f40c5abb 100644
--- a/xml/System.Collections.Immutable/ImmutableInterlocked.xml
+++ b/xml/System.Collections.Immutable/ImmutableInterlocked.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains interlocked exchange mechanisms for immutable collections.  
@@ -379,12 +375,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -448,12 +438,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -508,12 +492,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -883,12 +861,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -989,12 +961,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Immutable/ImmutableList.xml b/xml/System.Collections.Immutable/ImmutableList.xml
index 78177e8b97a..19750737da9 100644
--- a/xml/System.Collections.Immutable/ImmutableList.xml
+++ b/xml/System.Collections.Immutable/ImmutableList.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of initialization methods for instances of the <see cref="T:System.Collections.Immutable.ImmutableList`1" /> class.  
diff --git a/xml/System.Collections.Immutable/ImmutableList`1+Enumerator.xml b/xml/System.Collections.Immutable/ImmutableList`1+Enumerator.xml
index c370d5ce8da..6b11b74797e 100644
--- a/xml/System.Collections.Immutable/ImmutableList`1+Enumerator.xml
+++ b/xml/System.Collections.Immutable/ImmutableList`1+Enumerator.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Enumerates the contents of a binary tree.  
@@ -102,10 +98,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
diff --git a/xml/System.Collections.Immutable/ImmutableList`1.xml b/xml/System.Collections.Immutable/ImmutableList`1.xml
index 195bf5441c5..67736b5159a 100644
--- a/xml/System.Collections.Immutable/ImmutableList`1.xml
+++ b/xml/System.Collections.Immutable/ImmutableList`1.xml
@@ -85,10 +85,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of elements in the list.</typeparam>
@@ -1067,12 +1063,6 @@ This example shows how to create a new immutable list by adding and removing ite
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableList&lt;T&gt;+Enumerator</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Immutable/ImmutableQueue.xml b/xml/System.Collections.Immutable/ImmutableQueue.xml
index f6a88f0cdb0..714e3f73a53 100644
--- a/xml/System.Collections.Immutable/ImmutableQueue.xml
+++ b/xml/System.Collections.Immutable/ImmutableQueue.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of initialization methods for instances of the <see cref="T:System.Collections.Immutable.ImmutableQueue`1" /> class.  
diff --git a/xml/System.Collections.Immutable/ImmutableQueue`1.xml b/xml/System.Collections.Immutable/ImmutableQueue`1.xml
index 3957fe7f790..9cbf3f2dbae 100644
--- a/xml/System.Collections.Immutable/ImmutableQueue`1.xml
+++ b/xml/System.Collections.Immutable/ImmutableQueue`1.xml
@@ -66,10 +66,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of elements in the queue.</typeparam>
@@ -263,12 +259,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableQueue&lt;T&gt;+Enumerator</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Immutable/ImmutableSortedDictionary.xml b/xml/System.Collections.Immutable/ImmutableSortedDictionary.xml
index 8954948ed10..68a7c8b8b9b 100644
--- a/xml/System.Collections.Immutable/ImmutableSortedDictionary.xml
+++ b/xml/System.Collections.Immutable/ImmutableSortedDictionary.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of initialization methods for instances of the <see cref="T:System.Collections.Immutable.ImmutableSortedDictionary`2" /> class.  
diff --git a/xml/System.Collections.Immutable/ImmutableSortedDictionary`2+Enumerator.xml b/xml/System.Collections.Immutable/ImmutableSortedDictionary`2+Enumerator.xml
index 51dfcd64e65..ec0d2f562a7 100644
--- a/xml/System.Collections.Immutable/ImmutableSortedDictionary`2+Enumerator.xml
+++ b/xml/System.Collections.Immutable/ImmutableSortedDictionary`2+Enumerator.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Enumerates the contents of a binary tree.  
diff --git a/xml/System.Collections.Immutable/ImmutableSortedDictionary`2.xml b/xml/System.Collections.Immutable/ImmutableSortedDictionary`2.xml
index d29fe40a6aa..feee41e3eef 100644
--- a/xml/System.Collections.Immutable/ImmutableSortedDictionary`2.xml
+++ b/xml/System.Collections.Immutable/ImmutableSortedDictionary`2.xml
@@ -85,10 +85,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TKey">The type of the key contained in the dictionary.</typeparam>
@@ -422,12 +418,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableSortedDictionary&lt;TKey,TValue&gt;+Enumerator</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Immutable/ImmutableSortedSet.xml b/xml/System.Collections.Immutable/ImmutableSortedSet.xml
index 4af4ae6c851..84278a51c08 100644
--- a/xml/System.Collections.Immutable/ImmutableSortedSet.xml
+++ b/xml/System.Collections.Immutable/ImmutableSortedSet.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of initialization methods for instances of the <see cref="T:System.Collections.Immutable.ImmutableSortedSet`1" /> class.  
diff --git a/xml/System.Collections.Immutable/ImmutableSortedSet`1+Builder.xml b/xml/System.Collections.Immutable/ImmutableSortedSet`1+Builder.xml
index e3e72b40621..5cb4530204d 100644
--- a/xml/System.Collections.Immutable/ImmutableSortedSet`1+Builder.xml
+++ b/xml/System.Collections.Immutable/ImmutableSortedSet`1+Builder.xml
@@ -648,10 +648,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
@@ -689,10 +685,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
diff --git a/xml/System.Collections.Immutable/ImmutableSortedSet`1+Enumerator.xml b/xml/System.Collections.Immutable/ImmutableSortedSet`1+Enumerator.xml
index 54746fefaa6..882d99f4998 100644
--- a/xml/System.Collections.Immutable/ImmutableSortedSet`1+Enumerator.xml
+++ b/xml/System.Collections.Immutable/ImmutableSortedSet`1+Enumerator.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Enumerates the contents of a binary tree.  
@@ -102,10 +98,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
diff --git a/xml/System.Collections.Immutable/ImmutableSortedSet`1.xml b/xml/System.Collections.Immutable/ImmutableSortedSet`1.xml
index 1085b2c7a9a..9502d6cd962 100644
--- a/xml/System.Collections.Immutable/ImmutableSortedSet`1.xml
+++ b/xml/System.Collections.Immutable/ImmutableSortedSet`1.xml
@@ -96,10 +96,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of elements in the set.</typeparam>
@@ -398,12 +394,6 @@ If you need to perform multiple operations on an immutable collection, to increa
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableSortedSet&lt;T&gt;+Enumerator</ReturnType>
       </ReturnValue>
@@ -916,10 +906,6 @@ All collections, including empty sets, are supersets of an empty set. Therefore,
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
@@ -967,10 +953,6 @@ All collections, including empty sets, are supersets of an empty set. Therefore,
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
diff --git a/xml/System.Collections.Immutable/ImmutableStack.xml b/xml/System.Collections.Immutable/ImmutableStack.xml
index 1ce2efdcdea..60839aecb9d 100644
--- a/xml/System.Collections.Immutable/ImmutableStack.xml
+++ b/xml/System.Collections.Immutable/ImmutableStack.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of initialization methods for instances of the <see cref="T:System.Collections.Immutable.ImmutableStack`1" /> class.  
diff --git a/xml/System.Collections.Immutable/ImmutableStack`1.xml b/xml/System.Collections.Immutable/ImmutableStack`1.xml
index 2814a977d4f..18b2aceb85d 100644
--- a/xml/System.Collections.Immutable/ImmutableStack`1.xml
+++ b/xml/System.Collections.Immutable/ImmutableStack`1.xml
@@ -70,10 +70,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of element on the stack.</typeparam>
@@ -166,12 +162,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableStack&lt;T&gt;+Enumerator</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.ObjectModel/Collection`1.xml b/xml/System.Collections.ObjectModel/Collection`1.xml
index 41c8b7fb1ff..61b9bef8db6 100644
--- a/xml/System.Collections.ObjectModel/Collection`1.xml
+++ b/xml/System.Collections.ObjectModel/Collection`1.xml
@@ -93,10 +93,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
diff --git a/xml/System.Collections.ObjectModel/KeyedCollection`2.xml b/xml/System.Collections.ObjectModel/KeyedCollection`2.xml
index cb2add8a10f..060a8c476b9 100644
--- a/xml/System.Collections.ObjectModel/KeyedCollection`2.xml
+++ b/xml/System.Collections.ObjectModel/KeyedCollection`2.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
diff --git a/xml/System.Collections.ObjectModel/ObservableCollection`1.xml b/xml/System.Collections.ObjectModel/ObservableCollection`1.xml
index 2ca8fd9d2f9..6bf61a77920 100644
--- a/xml/System.Collections.ObjectModel/ObservableCollection`1.xml
+++ b/xml/System.Collections.ObjectModel/ObservableCollection`1.xml
@@ -75,10 +75,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -188,12 +184,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Windows</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="collection" Type="System.Collections.Generic.IEnumerable&lt;T&gt;" />
       </Parameters>
@@ -247,12 +237,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Windows</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="list" Type="System.Collections.Generic.List&lt;T&gt;" Index="0" FrameworkAlternate="dotnet-plat-ext-5.0;net-5.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;net-6.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;net-7.0;windowsdesktop-7.0;netframework-4.8.1;net-8.0;windowsdesktop-8.0;windowsdesktop-9.0;net-9.0" />
       </Parameters>
@@ -308,12 +292,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Windows</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IDisposable</ReturnType>
       </ReturnValue>
@@ -531,12 +509,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Windows</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -724,12 +696,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Windows</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -795,12 +761,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Windows</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -962,12 +922,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Windows</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.ObjectModel/ReadOnlyCollection`1.xml b/xml/System.Collections.ObjectModel/ReadOnlyCollection`1.xml
index 9b76a37a996..db7dccb10aa 100644
--- a/xml/System.Collections.ObjectModel/ReadOnlyCollection`1.xml
+++ b/xml/System.Collections.ObjectModel/ReadOnlyCollection`1.xml
@@ -93,10 +93,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
diff --git a/xml/System.Collections.ObjectModel/ReadOnlyDictionary`2+ValueCollection.xml b/xml/System.Collections.ObjectModel/ReadOnlyDictionary`2+ValueCollection.xml
index 6d99e853ea7..082aa0a4d12 100644
--- a/xml/System.Collections.ObjectModel/ReadOnlyDictionary`2+ValueCollection.xml
+++ b/xml/System.Collections.ObjectModel/ReadOnlyDictionary`2+ValueCollection.xml
@@ -85,10 +85,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
@@ -144,12 +140,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -263,12 +253,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IEnumerator&lt;TValue&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.ObjectModel/ReadOnlyDictionary`2.xml b/xml/System.Collections.ObjectModel/ReadOnlyDictionary`2.xml
index 893b73f7aed..9c3655eacc9 100644
--- a/xml/System.Collections.ObjectModel/ReadOnlyDictionary`2.xml
+++ b/xml/System.Collections.ObjectModel/ReadOnlyDictionary`2.xml
@@ -94,10 +94,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {Count}")&gt;]</AttributeName>
diff --git a/xml/System.Collections.ObjectModel/ReadOnlyObservableCollection`1.xml b/xml/System.Collections.ObjectModel/ReadOnlyObservableCollection`1.xml
index 240b76b0bd0..73a33c87de8 100644
--- a/xml/System.Collections.ObjectModel/ReadOnlyObservableCollection`1.xml
+++ b/xml/System.Collections.ObjectModel/ReadOnlyObservableCollection`1.xml
@@ -75,10 +75,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -139,12 +135,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Windows</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="list" Type="System.Collections.ObjectModel.ObservableCollection&lt;T&gt;" />
       </Parameters>
@@ -244,10 +234,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.ObjectModel.ReadOnlyObservableCollection&lt;T&gt;</ReturnType>
@@ -296,12 +282,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Windows</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -352,12 +332,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Windows</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.ObjectModel/ReadOnlySet`1.xml b/xml/System.Collections.ObjectModel/ReadOnlySet`1.xml
index 67a591d6222..a1a6f740ed3 100644
--- a/xml/System.Collections.ObjectModel/ReadOnlySet`1.xml
+++ b/xml/System.Collections.ObjectModel/ReadOnlySet`1.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
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-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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   </Attributes>
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diff --git a/xml/System.Collections.Specialized/BitVector32+Section.xml b/xml/System.Collections.Specialized/BitVector32+Section.xml
index 754ab2a423b..7d603fc8d73 100644
--- a/xml/System.Collections.Specialized/BitVector32+Section.xml
+++ b/xml/System.Collections.Specialized/BitVector32+Section.xml
@@ -173,12 +173,6 @@
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@@ -504,12 +498,6 @@
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@@ -562,12 +550,6 @@
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
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diff --git a/xml/System.Collections.Specialized/BitVector32.xml b/xml/System.Collections.Specialized/BitVector32.xml
index 6bf46b67e02..349c989b12b 100644
--- a/xml/System.Collections.Specialized/BitVector32.xml
+++ b/xml/System.Collections.Specialized/BitVector32.xml
@@ -626,12 +626,6 @@
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -898,12 +892,6 @@
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         <AssemblyVersion>2.1.0.0</AssemblyVersion>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
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@@ -958,12 +946,6 @@
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.String</ReturnType>
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diff --git a/xml/System.Collections.Specialized/CollectionsUtil.xml b/xml/System.Collections.Specialized/CollectionsUtil.xml
index 691c5412a82..c8f7f318884 100644
--- a/xml/System.Collections.Specialized/CollectionsUtil.xml
+++ b/xml/System.Collections.Specialized/CollectionsUtil.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
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-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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   </Attributes>
   <Docs>
     <summary>Creates collections that ignore the case in strings.</summary>
diff --git a/xml/System.Collections.Specialized/HybridDictionary.xml b/xml/System.Collections.Specialized/HybridDictionary.xml
index 4b54f5ca88d..32f8308491b 100644
--- a/xml/System.Collections.Specialized/HybridDictionary.xml
+++ b/xml/System.Collections.Specialized/HybridDictionary.xml
@@ -58,10 +58,6 @@
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       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
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     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
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diff --git a/xml/System.Collections.Specialized/INotifyCollectionChanged.xml b/xml/System.Collections.Specialized/INotifyCollectionChanged.xml
index 55d974469c4..0ef96081e7e 100644
--- a/xml/System.Collections.Specialized/INotifyCollectionChanged.xml
+++ b/xml/System.Collections.Specialized/INotifyCollectionChanged.xml
@@ -55,10 +55,6 @@
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     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.CompilerServices.TypeForwardedFrom("WindowsBase, Version=3.0.0.0, Culture=Neutral, PublicKeyToken=31bf3856ad364e35")]</AttributeName>
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diff --git a/xml/System.Collections.Specialized/IOrderedDictionary.xml b/xml/System.Collections.Specialized/IOrderedDictionary.xml
index f7c432d74c7..e058a8e70c0 100644
--- a/xml/System.Collections.Specialized/IOrderedDictionary.xml
+++ b/xml/System.Collections.Specialized/IOrderedDictionary.xml
@@ -122,12 +122,6 @@
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         <AssemblyVersion>2.1.0.0</AssemblyVersion>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IDictionaryEnumerator</ReturnType>
       </ReturnValue>
@@ -200,12 +194,6 @@
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-      </Attributes>
       <ReturnValue>
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@@ -301,14 +289,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
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       <ReturnValue>
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diff --git a/xml/System.Collections.Specialized/ListDictionary.xml b/xml/System.Collections.Specialized/ListDictionary.xml
index 05f1c708d37..f175e40b9c6 100644
--- a/xml/System.Collections.Specialized/ListDictionary.xml
+++ b/xml/System.Collections.Specialized/ListDictionary.xml
@@ -58,10 +58,6 @@
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-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -218,10 +214,6 @@
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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         <Attribute FrameworkAlternate="netframework-4.0">
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diff --git a/xml/System.Collections.Specialized/NameObjectCollectionBase+KeysCollection.xml b/xml/System.Collections.Specialized/NameObjectCollectionBase+KeysCollection.xml
index 9d48cc70843..a1a399772fe 100644
--- a/xml/System.Collections.Specialized/NameObjectCollectionBase+KeysCollection.xml
+++ b/xml/System.Collections.Specialized/NameObjectCollectionBase+KeysCollection.xml
@@ -50,10 +50,6 @@
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   </Interfaces>
   <Attributes>
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-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
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     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -155,12 +151,6 @@
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-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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-      </Attributes>
       <ReturnValue>
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@@ -219,12 +209,6 @@
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IEnumerator</ReturnType>
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@@ -297,10 +281,6 @@
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           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Collections.Specialized/NameObjectCollectionBase.xml b/xml/System.Collections.Specialized/NameObjectCollectionBase.xml
index ec7fa84ef7c..8b8785b3d37 100644
--- a/xml/System.Collections.Specialized/NameObjectCollectionBase.xml
+++ b/xml/System.Collections.Specialized/NameObjectCollectionBase.xml
@@ -66,10 +66,6 @@
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-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -479,10 +475,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
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@@ -1017,12 +1009,6 @@
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@@ -1542,12 +1528,6 @@
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       <ReturnValue>
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@@ -1624,10 +1604,6 @@
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@@ -1766,10 +1742,6 @@
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diff --git a/xml/System.Collections.Specialized/NameValueCollection.xml b/xml/System.Collections.Specialized/NameValueCollection.xml
index ec95464fd1e..1f41260f3de 100644
--- a/xml/System.Collections.Specialized/NameValueCollection.xml
+++ b/xml/System.Collections.Specialized/NameValueCollection.xml
@@ -47,10 +47,6 @@
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@@ -266,12 +262,6 @@
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@@ -548,12 +538,6 @@
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@@ -627,10 +611,6 @@
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         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -780,12 +760,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1024,12 +998,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Specialized/NotifyCollectionChangedEventArgs.xml b/xml/System.Collections.Specialized/NotifyCollectionChangedEventArgs.xml
index 3bd0d151dbd..33cf7483ef1 100644
--- a/xml/System.Collections.Specialized/NotifyCollectionChangedEventArgs.xml
+++ b/xml/System.Collections.Specialized/NotifyCollectionChangedEventArgs.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.CompilerServices.TypeForwardedFrom("WindowsBase, Version=3.0.0.0, Culture=Neutral, PublicKeyToken=31bf3856ad364e35")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.TypeForwardedFrom("WindowsBase, Version=3.0.0.0, Culture=Neutral, PublicKeyToken=31bf3856ad364e35")&gt;]</AttributeName>
@@ -273,12 +269,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Windows</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="action" Type="System.Collections.Specialized.NotifyCollectionChangedAction" />
         <Parameter Name="newItems" Type="System.Collections.IList" />
@@ -492,12 +482,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Windows</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="action" Type="System.Collections.Specialized.NotifyCollectionChangedAction" />
         <Parameter Name="newItems" Type="System.Collections.IList" />
diff --git a/xml/System.Collections.Specialized/OrderedDictionary.xml b/xml/System.Collections.Specialized/OrderedDictionary.xml
index d1f1cec563d..4494ad172bc 100644
--- a/xml/System.Collections.Specialized/OrderedDictionary.xml
+++ b/xml/System.Collections.Specialized/OrderedDictionary.xml
@@ -75,10 +75,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -218,10 +214,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -337,10 +329,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1133,14 +1121,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1342,12 +1322,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Specialized/StringCollection.xml b/xml/System.Collections.Specialized/StringCollection.xml
index 2605cf9bb5d..04cbd9f2156 100644
--- a/xml/System.Collections.Specialized/StringCollection.xml
+++ b/xml/System.Collections.Specialized/StringCollection.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -243,12 +239,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -452,12 +442,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -599,12 +583,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Specialized.StringEnumerator</ReturnType>
       </ReturnValue>
@@ -1160,10 +1138,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Collections.Specialized/StringDictionary.xml b/xml/System.Collections.Specialized/StringDictionary.xml
index 2b9f25de24d..d420b2d8976 100644
--- a/xml/System.Collections.Specialized/StringDictionary.xml
+++ b/xml/System.Collections.Specialized/StringDictionary.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Design.Serialization.DesignerSerializer("System.Diagnostics.Design.StringDictionaryCodeDomSerializer, System.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.ComponentModel.Design.Serialization.CodeDomSerializer, System.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Design.Serialization.DesignerSerializer("System.Diagnostics.Design.StringDictionaryCodeDomSerializer, System.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.ComponentModel.Design.Serialization.CodeDomSerializer, System.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")&gt;]</AttributeName>
@@ -398,12 +394,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections.Specialized/StringEnumerator.xml b/xml/System.Collections.Specialized/StringEnumerator.xml
index 2a8434b5e5f..182b9560357 100644
--- a/xml/System.Collections.Specialized/StringEnumerator.xml
+++ b/xml/System.Collections.Specialized/StringEnumerator.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Supports a simple iteration over a <see cref="T:System.Collections.Specialized.StringCollection" />.</summary>
diff --git a/xml/System.Collections/ArrayList.xml b/xml/System.Collections/ArrayList.xml
index f4ba76463e6..affaeb8d8b9 100644
--- a/xml/System.Collections/ArrayList.xml
+++ b/xml/System.Collections/ArrayList.xml
@@ -86,10 +86,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -463,12 +459,6 @@ This method is an `O(1)` operation.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -654,12 +644,6 @@ This method is an `O(1)` operation.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -739,12 +723,6 @@ This method is an `O(1)` operation.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -835,12 +813,6 @@ This method is an `O(1)` operation.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1150,12 +1122,6 @@ This method is an `O(1)` operation.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2007,10 +1973,6 @@ This method is an `O(1)` operation.
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -2094,12 +2056,6 @@ This method is an `O(1)` operation.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2182,12 +2138,6 @@ This method is an `O(1)` operation.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2283,12 +2233,6 @@ This method is an `O(1)` operation.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2711,14 +2655,6 @@ This method is an `O(1)` operation.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -2819,12 +2755,6 @@ This method is an `O(1)` operation.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2901,12 +2831,6 @@ This method is an `O(1)` operation.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2989,12 +2913,6 @@ This method is an `O(1)` operation.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -3241,10 +3159,6 @@ This method is an `O(1)` operation.
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -3914,12 +3828,6 @@ This method is an `O(1)` operation.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4001,12 +3909,6 @@ This method is an `O(1)` operation.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections/BitArray.xml b/xml/System.Collections/BitArray.xml
index 42a4dcdd37f..7c8ef815eb7 100644
--- a/xml/System.Collections/BitArray.xml
+++ b/xml/System.Collections/BitArray.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Collections/CaseInsensitiveComparer.xml b/xml/System.Collections/CaseInsensitiveComparer.xml
index 5d03ad77f67..2fed20d2926 100644
--- a/xml/System.Collections/CaseInsensitiveComparer.xml
+++ b/xml/System.Collections/CaseInsensitiveComparer.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -271,12 +267,6 @@ The <xref:System.Collections.Comparer> class is the default implementation of th
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections/CaseInsensitiveHashCodeProvider.xml b/xml/System.Collections/CaseInsensitiveHashCodeProvider.xml
index 4a293259ba6..a02cf86b178 100644
--- a/xml/System.Collections/CaseInsensitiveHashCodeProvider.xml
+++ b/xml/System.Collections/CaseInsensitiveHashCodeProvider.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Collections/CollectionBase.xml b/xml/System.Collections/CollectionBase.xml
index ba175723bfe..fd5894f882e 100644
--- a/xml/System.Collections/CollectionBase.xml
+++ b/xml/System.Collections/CollectionBase.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -747,12 +743,6 @@ A <xref:System.Collections.CollectionBase> instance is always modifiable. See <x
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -835,12 +825,6 @@ A <xref:System.Collections.CollectionBase> instance is always modifiable. See <x
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -913,12 +897,6 @@ A <xref:System.Collections.CollectionBase> instance is always modifiable. See <x
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1000,12 +978,6 @@ A <xref:System.Collections.CollectionBase> instance is always modifiable. See <x
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1078,12 +1050,6 @@ A <xref:System.Collections.CollectionBase> instance is always modifiable. See <x
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1168,12 +1134,6 @@ A <xref:System.Collections.CollectionBase> instance is always modifiable. See <x
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections/Comparer.xml b/xml/System.Collections/Comparer.xml
index 5b54a6d264a..17b51a78f50 100644
--- a/xml/System.Collections/Comparer.xml
+++ b/xml/System.Collections/Comparer.xml
@@ -78,10 +78,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -232,12 +228,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections/DictionaryBase.xml b/xml/System.Collections/DictionaryBase.xml
index 02cea8b8aa7..303dafca0e0 100644
--- a/xml/System.Collections/DictionaryBase.xml
+++ b/xml/System.Collections/DictionaryBase.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -684,12 +680,6 @@ The C# [foreach](/dotnet/csharp/language-reference/keywords/foreach-in) statemen
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -1077,12 +1067,6 @@ The C# [foreach](/dotnet/csharp/language-reference/keywords/foreach-in) statemen
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1170,12 +1154,6 @@ The C# [foreach](/dotnet/csharp/language-reference/keywords/foreach-in) statemen
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections/DictionaryEntry.xml b/xml/System.Collections/DictionaryEntry.xml
index 95fe53a1628..c946249e462 100644
--- a/xml/System.Collections/DictionaryEntry.xml
+++ b/xml/System.Collections/DictionaryEntry.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -312,14 +308,6 @@ The <xref:System.Collections.IDictionaryEnumerator.Entry%2A?displayProperty=name
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Collections/Hashtable.xml b/xml/System.Collections/Hashtable.xml
index 9c3e1e61017..afb654634b3 100644
--- a/xml/System.Collections/Hashtable.xml
+++ b/xml/System.Collections/Hashtable.xml
@@ -92,10 +92,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -382,12 +378,6 @@ Each element is a key/value pair stored in a <xref:System.Collections.Dictionary
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="equalityComparer" Type="System.Collections.IEqualityComparer" Index="0" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1" />
       </Parameters>
@@ -747,10 +737,6 @@ Each element is a key/value pair stored in a <xref:System.Collections.Dictionary
           <AttributeName Language="C#">[System.Obsolete("This constructor has been deprecated. Use Hashtable(IEqualityComparer) instead.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This constructor has been deprecated. Use Hashtable(IEqualityComparer) instead.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="hcp" Type="System.Collections.IHashCodeProvider" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
@@ -842,12 +828,6 @@ Each element is a key/value pair stored in a <xref:System.Collections.Dictionary
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="capacity" Type="System.Int32" Index="0" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1" />
         <Parameter Name="equalityComparer" Type="System.Collections.IEqualityComparer" Index="1" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1" />
@@ -1118,10 +1098,6 @@ Each element is a key/value pair stored in a <xref:System.Collections.Dictionary
           <AttributeName Language="C#">[System.Obsolete("This constructor has been deprecated. Use Hashtable(IDictionary, IEqualityComparer) instead.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This constructor has been deprecated. Use Hashtable(IDictionary, IEqualityComparer) instead.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="d" Type="System.Collections.IDictionary" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0">
@@ -1339,10 +1315,6 @@ Each element is a key/value pair stored in a <xref:System.Collections.Dictionary
           <AttributeName Language="C#">[System.Obsolete("This constructor has been deprecated. Use Hashtable(int, IEqualityComparer) instead.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This constructor has been deprecated. Use Hashtable(int, IEqualityComparer) instead.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="capacity" Type="System.Int32" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
@@ -1438,12 +1410,6 @@ Each element is a key/value pair stored in a <xref:System.Collections.Dictionary
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="capacity" Type="System.Int32" Index="0" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1" />
         <Parameter Name="loadFactor" Type="System.Single" Index="1" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1" />
@@ -1549,10 +1515,6 @@ Each element is a key/value pair stored in a <xref:System.Collections.Dictionary
           <AttributeName Language="C#">[System.Obsolete("This constructor has been deprecated. Use Hashtable(IDictionary, float, IEqualityComparer) instead.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This constructor has been deprecated. Use Hashtable(IDictionary, float, IEqualityComparer) instead.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="d" Type="System.Collections.IDictionary" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0">
@@ -1669,10 +1631,6 @@ Each element is a key/value pair stored in a <xref:System.Collections.Dictionary
           <AttributeName Language="C#">[System.Obsolete("This constructor has been deprecated. Use Hashtable(int, float, IEqualityComparer) instead.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This constructor has been deprecated. Use Hashtable(int, float, IEqualityComparer) instead.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="capacity" Type="System.Int32" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
@@ -2036,14 +1994,6 @@ Each element is a key/value pair stored in a <xref:System.Collections.Dictionary
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IComparer</ReturnType>
@@ -2266,12 +2216,6 @@ Each element is a key/value pair stored in a <xref:System.Collections.Dictionary
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2502,10 +2446,6 @@ Each element is a key/value pair stored in a <xref:System.Collections.Dictionary
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IEqualityComparer</ReturnType>
@@ -2826,14 +2766,6 @@ Each element is a key/value pair stored in a <xref:System.Collections.Dictionary
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IHashCodeProvider</ReturnType>
@@ -3338,12 +3270,6 @@ Each element is a key/value pair stored in a <xref:System.Collections.Dictionary
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections/ICollection.xml b/xml/System.Collections/ICollection.xml
index 5680e77f3b8..606f96bcb2b 100644
--- a/xml/System.Collections/ICollection.xml
+++ b/xml/System.Collections/ICollection.xml
@@ -48,10 +48,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Collections/IComparer.xml b/xml/System.Collections/IComparer.xml
index 729dcf1b137..7154298106a 100644
--- a/xml/System.Collections/IComparer.xml
+++ b/xml/System.Collections/IComparer.xml
@@ -44,10 +44,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Collections/IDictionary.xml b/xml/System.Collections/IDictionary.xml
index 163d471b54d..27a2f8c917e 100644
--- a/xml/System.Collections/IDictionary.xml
+++ b/xml/System.Collections/IDictionary.xml
@@ -51,10 +51,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Collections/IDictionaryEnumerator.xml b/xml/System.Collections/IDictionaryEnumerator.xml
index 9eb2282a8cf..6054902c0f4 100644
--- a/xml/System.Collections/IDictionaryEnumerator.xml
+++ b/xml/System.Collections/IDictionaryEnumerator.xml
@@ -48,10 +48,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -270,10 +266,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Collections/IEnumerable.xml b/xml/System.Collections/IEnumerable.xml
index 79dac59cb8a..df19fde3798 100644
--- a/xml/System.Collections/IEnumerable.xml
+++ b/xml/System.Collections/IEnumerable.xml
@@ -44,10 +44,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("496B0ABE-CDEE-11d3-88E8-00902754C43A")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("496B0ABE-CDEE-11d3-88E8-00902754C43A")&gt;]</AttributeName>
diff --git a/xml/System.Collections/IEqualityComparer.xml b/xml/System.Collections/IEqualityComparer.xml
index 87b863c5822..f67cdf74504 100644
--- a/xml/System.Collections/IEqualityComparer.xml
+++ b/xml/System.Collections/IEqualityComparer.xml
@@ -43,10 +43,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -108,12 +104,6 @@ The `IEqualityComparer` interface supports only equality comparisons. Customizat
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections/IHashCodeProvider.xml b/xml/System.Collections/IHashCodeProvider.xml
index a65d41c21d8..efdd4031528 100644
--- a/xml/System.Collections/IHashCodeProvider.xml
+++ b/xml/System.Collections/IHashCodeProvider.xml
@@ -65,10 +65,6 @@
       <AttributeName Language="C#">[System.Obsolete("IHashCodeProvider has been deprecated. Use IEqualityComparer instead.")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("IHashCodeProvider has been deprecated. Use IEqualityComparer instead.")&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Collections/IList.xml b/xml/System.Collections/IList.xml
index d71da78f856..d71c4e9f335 100644
--- a/xml/System.Collections/IList.xml
+++ b/xml/System.Collections/IList.xml
@@ -51,10 +51,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Collections/IStructuralComparable.xml b/xml/System.Collections/IStructuralComparable.xml
index 9f707e2f2de..3f07c9db0ee 100644
--- a/xml/System.Collections/IStructuralComparable.xml
+++ b/xml/System.Collections/IStructuralComparable.xml
@@ -41,12 +41,6 @@
     <TypeForwarding From="System.Runtime" FromVersion="4.1.1.1" To="mscorlib" ToVersion="4.0.0.0" FrameworkAlternate="netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Supports the structural comparison of collection objects.</summary>
     <remarks>
diff --git a/xml/System.Collections/IStructuralEquatable.xml b/xml/System.Collections/IStructuralEquatable.xml
index f1bf768b21b..89c82786f0e 100644
--- a/xml/System.Collections/IStructuralEquatable.xml
+++ b/xml/System.Collections/IStructuralEquatable.xml
@@ -41,12 +41,6 @@
     <TypeForwarding From="System.Runtime" FromVersion="4.1.1.1" To="mscorlib" ToVersion="4.0.0.0" FrameworkAlternate="netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Defines methods to support the comparison of objects for structural equality.</summary>
     <remarks>
diff --git a/xml/System.Collections/Queue.xml b/xml/System.Collections/Queue.xml
index de281ab81d2..a4e87de1fb3 100644
--- a/xml/System.Collections/Queue.xml
+++ b/xml/System.Collections/Queue.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -523,12 +519,6 @@ This class implements a queue as a circular array. Objects stored in a <xref:Sys
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -726,12 +716,6 @@ This class implements a queue as a circular array. Objects stored in a <xref:Sys
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -799,12 +783,6 @@ This class implements a queue as a circular array. Objects stored in a <xref:Sys
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1013,12 +991,6 @@ This class implements a queue as a circular array. Objects stored in a <xref:Sys
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections/ReadOnlyCollectionBase.xml b/xml/System.Collections/ReadOnlyCollectionBase.xml
index 49bddb53cbc..ba4c582f1aa 100644
--- a/xml/System.Collections/ReadOnlyCollectionBase.xml
+++ b/xml/System.Collections/ReadOnlyCollectionBase.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Collections/SortedList.xml b/xml/System.Collections/SortedList.xml
index 5df48c0552e..1f4b6eb1a1f 100644
--- a/xml/System.Collections/SortedList.xml
+++ b/xml/System.Collections/SortedList.xml
@@ -66,10 +66,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -252,12 +248,6 @@ A <xref:System.Collections.SortedList> element can be accessed by its key, like
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="comparer" Type="System.Collections.IComparer" />
       </Parameters>
@@ -475,12 +465,6 @@ A <xref:System.Collections.SortedList> element can be accessed by its key, like
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="comparer" Type="System.Collections.IComparer" />
         <Parameter Name="capacity" Type="System.Int32" />
@@ -1094,12 +1078,6 @@ A <xref:System.Collections.SortedList> element can be accessed by its key, like
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1316,12 +1294,6 @@ A <xref:System.Collections.SortedList> element can be accessed by its key, like
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -1736,12 +1708,6 @@ A <xref:System.Collections.SortedList> element can be accessed by its key, like
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2300,12 +2266,6 @@ A <xref:System.Collections.SortedList> element can be accessed by its key, like
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections/Stack.xml b/xml/System.Collections/Stack.xml
index 30aeb871696..3a5dbe5e80a 100644
--- a/xml/System.Collections/Stack.xml
+++ b/xml/System.Collections/Stack.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -442,12 +438,6 @@ If <xref:System.Collections.Stack.Count%2A> is less than the capacity of the sta
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -785,12 +775,6 @@ If <xref:System.Collections.Stack.Count%2A> is less than the capacity of the sta
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -858,12 +842,6 @@ If <xref:System.Collections.Stack.Count%2A> is less than the capacity of the sta
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -931,12 +909,6 @@ If <xref:System.Collections.Stack.Count%2A> is less than the capacity of the sta
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Collections/StructuralComparisons.xml b/xml/System.Collections/StructuralComparisons.xml
index 86677bdac42..70041f7be60 100644
--- a/xml/System.Collections/StructuralComparisons.xml
+++ b/xml/System.Collections/StructuralComparisons.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides objects for performing a structural comparison of two collection objects.</summary>
diff --git a/xml/System.ComponentModel.Composition.Hosting/AggregateCatalog.xml b/xml/System.ComponentModel.Composition.Hosting/AggregateCatalog.xml
index f9a3d46a4af..a4b9cdc3cc9 100644
--- a/xml/System.ComponentModel.Composition.Hosting/AggregateCatalog.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/AggregateCatalog.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A catalog that combines the elements of <see cref="T:System.ComponentModel.Composition.Primitives.ComposablePartCatalog" /> objects.</summary>
diff --git a/xml/System.ComponentModel.Composition.Hosting/AggregateExportProvider.xml b/xml/System.ComponentModel.Composition.Hosting/AggregateExportProvider.xml
index 6fe8bbeedb4..6b80533f194 100644
--- a/xml/System.ComponentModel.Composition.Hosting/AggregateExportProvider.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/AggregateExportProvider.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Retrieves exports provided by a collection of <see cref="T:System.ComponentModel.Composition.Hosting.ExportProvider" /> objects.</summary>
diff --git a/xml/System.ComponentModel.Composition.Hosting/ApplicationCatalog.xml b/xml/System.ComponentModel.Composition.Hosting/ApplicationCatalog.xml
index 2d5ca058d53..5d8ad283f58 100644
--- a/xml/System.ComponentModel.Composition.Hosting/ApplicationCatalog.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/ApplicationCatalog.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Discovers attributed parts in the dynamic link library (DLL) and EXE files in an application's directory and path.</summary>
diff --git a/xml/System.ComponentModel.Composition.Hosting/AssemblyCatalog.xml b/xml/System.ComponentModel.Composition.Hosting/AssemblyCatalog.xml
index 71450395e61..1f573824dde 100644
--- a/xml/System.ComponentModel.Composition.Hosting/AssemblyCatalog.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/AssemblyCatalog.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Discovers attributed parts in a managed code assembly.</summary>
diff --git a/xml/System.ComponentModel.Composition.Hosting/AtomicComposition.xml b/xml/System.ComponentModel.Composition.Hosting/AtomicComposition.xml
index 71d444099f7..3451e98def6 100644
--- a/xml/System.ComponentModel.Composition.Hosting/AtomicComposition.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/AtomicComposition.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a single composition operation for transactional composition.</summary>
@@ -94,12 +90,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="outerAtomicComposition" Type="System.ComponentModel.Composition.Hosting.AtomicComposition" />
       </Parameters>
diff --git a/xml/System.ComponentModel.Composition.Hosting/CatalogExportProvider.xml b/xml/System.ComponentModel.Composition.Hosting/CatalogExportProvider.xml
index 164fdc04d2a..0c2bded4b00 100644
--- a/xml/System.ComponentModel.Composition.Hosting/CatalogExportProvider.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/CatalogExportProvider.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Retrieves exports from a catalog.</summary>
@@ -303,14 +299,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Composition.Hosting.ExportProvider</ReturnType>
diff --git a/xml/System.ComponentModel.Composition.Hosting/CatalogExtensions.xml b/xml/System.ComponentModel.Composition.Hosting/CatalogExtensions.xml
index f8815a378d5..83495aab356 100644
--- a/xml/System.ComponentModel.Composition.Hosting/CatalogExtensions.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/CatalogExtensions.xml
@@ -35,12 +35,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Composition.Hosting.CompositionService</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Composition.Hosting/ComposablePartCatalogChangeEventArgs.xml b/xml/System.ComponentModel.Composition.Hosting/ComposablePartCatalogChangeEventArgs.xml
index 824e3bbb3ed..7e33ee7f61d 100644
--- a/xml/System.ComponentModel.Composition.Hosting/ComposablePartCatalogChangeEventArgs.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/ComposablePartCatalogChangeEventArgs.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.ComponentModel.Composition.Hosting.INotifyComposablePartCatalogChanged.Changed" /> event.</summary>
@@ -117,10 +113,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Composition.Hosting/ComposablePartExportProvider.xml b/xml/System.ComponentModel.Composition.Hosting/ComposablePartExportProvider.xml
index ec0102724e8..a04603c0667 100644
--- a/xml/System.ComponentModel.Composition.Hosting/ComposablePartExportProvider.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/ComposablePartExportProvider.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Retrieves exports from a part.</summary>
@@ -292,14 +288,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Composition.Hosting.ExportProvider</ReturnType>
diff --git a/xml/System.ComponentModel.Composition.Hosting/CompositionBatch.xml b/xml/System.ComponentModel.Composition.Hosting/CompositionBatch.xml
index b8217813055..cd135c3f756 100644
--- a/xml/System.ComponentModel.Composition.Hosting/CompositionBatch.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/CompositionBatch.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a set of <see cref="T:System.ComponentModel.Composition.Primitives.ComposablePart" /> objects which will be added or removed from the container in a single transactional composition.</summary>
diff --git a/xml/System.ComponentModel.Composition.Hosting/CompositionConstants.xml b/xml/System.ComponentModel.Composition.Hosting/CompositionConstants.xml
index 94b04723cc9..095f866a83a 100644
--- a/xml/System.ComponentModel.Composition.Hosting/CompositionConstants.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/CompositionConstants.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains static metadata keys used by the composition system.</summary>
diff --git a/xml/System.ComponentModel.Composition.Hosting/CompositionContainer.xml b/xml/System.ComponentModel.Composition.Hosting/CompositionContainer.xml
index d15ed077f64..3e6e08b01ea 100644
--- a/xml/System.ComponentModel.Composition.Hosting/CompositionContainer.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/CompositionContainer.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Manages the composition of parts.</summary>
@@ -197,10 +193,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -245,12 +237,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="catalog" Type="System.ComponentModel.Composition.Primitives.ComposablePartCatalog" />
         <Parameter Name="isThreadSafe" Type="System.Boolean" />
@@ -299,12 +285,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="catalog" Type="System.ComponentModel.Composition.Primitives.ComposablePartCatalog" Index="0" FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
         <Parameter Name="compositionOptions" Type="System.ComponentModel.Composition.Hosting.CompositionOptions" Index="1" FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
@@ -351,10 +331,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Composition.Primitives.ComposablePartCatalog</ReturnType>
@@ -723,12 +699,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Composition.Hosting/CompositionScopeDefinition.xml b/xml/System.ComponentModel.Composition.Hosting/CompositionScopeDefinition.xml
index 2321bbf165e..f3814d7e9f9 100644
--- a/xml/System.ComponentModel.Composition.Hosting/CompositionScopeDefinition.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/CompositionScopeDefinition.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a node in a tree of scoped catalogs, reflecting an underlying catalog and its child scopes.</summary>
diff --git a/xml/System.ComponentModel.Composition.Hosting/CompositionService.xml b/xml/System.ComponentModel.Composition.Hosting/CompositionService.xml
index 96deb927402..b1cd5171996 100644
--- a/xml/System.ComponentModel.Composition.Hosting/CompositionService.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/CompositionService.xml
@@ -92,12 +92,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Composition.Hosting/DirectoryCatalog.xml b/xml/System.ComponentModel.Composition.Hosting/DirectoryCatalog.xml
index 9e9fb167ce2..562db61b660 100644
--- a/xml/System.ComponentModel.Composition.Hosting/DirectoryCatalog.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/DirectoryCatalog.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Discovers attributed parts in the assemblies in a specified directory.</summary>
diff --git a/xml/System.ComponentModel.Composition.Hosting/ExportProvider.xml b/xml/System.ComponentModel.Composition.Hosting/ExportProvider.xml
index 83a5cdfbd67..5acfa387b66 100644
--- a/xml/System.ComponentModel.Composition.Hosting/ExportProvider.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/ExportProvider.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Retrieves exports which match a specified <see cref="T:System.ComponentModel.Composition.Primitives.ImportDefinition" /> object.</summary>
@@ -595,10 +591,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -712,10 +704,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -757,12 +745,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IEnumerable&lt;System.ComponentModel.Composition.Primitives.Export&gt;</ReturnType>
       </ReturnValue>
@@ -812,12 +794,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IEnumerable&lt;System.Lazy&lt;System.Object,System.Object&gt;&gt;</ReturnType>
       </ReturnValue>
@@ -878,10 +854,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1081,12 +1053,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IEnumerable&lt;System.ComponentModel.Composition.Primitives.Export&gt;</ReturnType>
       </ReturnValue>
@@ -1130,12 +1096,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1162,12 +1122,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1195,12 +1149,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Composition.Hosting/ExportsChangeEventArgs.xml b/xml/System.ComponentModel.Composition.Hosting/ExportsChangeEventArgs.xml
index 836b15be940..9fa579c3044 100644
--- a/xml/System.ComponentModel.Composition.Hosting/ExportsChangeEventArgs.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/ExportsChangeEventArgs.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.ComponentModel.Composition.Hosting.ExportProvider.ExportsChanging" /> and <see cref="E:System.ComponentModel.Composition.Hosting.ExportProvider.ExportsChanged" /> event.</summary>
@@ -117,10 +113,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Composition.Hosting/FilteredCatalog.xml b/xml/System.ComponentModel.Composition.Hosting/FilteredCatalog.xml
index 221af6fe695..a2542c417b9 100644
--- a/xml/System.ComponentModel.Composition.Hosting/FilteredCatalog.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/FilteredCatalog.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a catalog after a filter function is applied to it.</summary>
diff --git a/xml/System.ComponentModel.Composition.Hosting/ImportEngine.xml b/xml/System.ComponentModel.Composition.Hosting/ImportEngine.xml
index 67c42a3ec93..10adab6a861 100644
--- a/xml/System.ComponentModel.Composition.Hosting/ImportEngine.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/ImportEngine.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Performs composition for containers.</summary>
diff --git a/xml/System.ComponentModel.Composition.Hosting/ScopingExtensions.xml b/xml/System.ComponentModel.Composition.Hosting/ScopingExtensions.xml
index 442381b487c..01582bd688a 100644
--- a/xml/System.ComponentModel.Composition.Hosting/ScopingExtensions.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/ScopingExtensions.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines static convenience methods for scoping.</summary>
diff --git a/xml/System.ComponentModel.Composition.Hosting/TypeCatalog.xml b/xml/System.ComponentModel.Composition.Hosting/TypeCatalog.xml
index 192b35fbef6..346641b033d 100644
--- a/xml/System.ComponentModel.Composition.Hosting/TypeCatalog.xml
+++ b/xml/System.ComponentModel.Composition.Hosting/TypeCatalog.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Discovers attributed parts from a collection of types.</summary>
diff --git a/xml/System.ComponentModel.Composition.Primitives/ComposablePart.xml b/xml/System.ComponentModel.Composition.Primitives/ComposablePart.xml
index 4694ca20c79..452f626e896 100644
--- a/xml/System.ComponentModel.Composition.Primitives/ComposablePart.xml
+++ b/xml/System.ComponentModel.Composition.Primitives/ComposablePart.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the abstract base class for composable parts, which import objects and produce exported objects.</summary>
diff --git a/xml/System.ComponentModel.Composition.Primitives/ComposablePartCatalog.xml b/xml/System.ComponentModel.Composition.Primitives/ComposablePartCatalog.xml
index 792e8bda645..24caa7d6e9c 100644
--- a/xml/System.ComponentModel.Composition.Primitives/ComposablePartCatalog.xml
+++ b/xml/System.ComponentModel.Composition.Primitives/ComposablePartCatalog.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the abstract base class for composable part catalogs, which collect and return <see cref="T:System.ComponentModel.Composition.Primitives.ComposablePartDefinition" /> objects.</summary>
diff --git a/xml/System.ComponentModel.Composition.Primitives/ComposablePartDefinition.xml b/xml/System.ComponentModel.Composition.Primitives/ComposablePartDefinition.xml
index f1869c575c6..e3ffbb9fae9 100644
--- a/xml/System.ComponentModel.Composition.Primitives/ComposablePartDefinition.xml
+++ b/xml/System.ComponentModel.Composition.Primitives/ComposablePartDefinition.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines an abstract base class for composable part definitions, which describe and enable the creation of <see cref="T:System.ComponentModel.Composition.Primitives.ComposablePart" /> objects.</summary>
diff --git a/xml/System.ComponentModel.Composition.Primitives/ComposablePartException.xml b/xml/System.ComponentModel.Composition.Primitives/ComposablePartException.xml
index 5232a36e849..03814603b20 100644
--- a/xml/System.ComponentModel.Composition.Primitives/ComposablePartException.xml
+++ b/xml/System.ComponentModel.Composition.Primitives/ComposablePartException.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The exception that is thrown when an error occurs when calling methods on a <see cref="T:System.ComponentModel.Composition.Primitives.ComposablePart" /> object.</summary>
@@ -132,10 +128,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -309,10 +301,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Composition.Primitives/ContractBasedImportDefinition.xml b/xml/System.ComponentModel.Composition.Primitives/ContractBasedImportDefinition.xml
index fb815421234..a6edff1f2fb 100644
--- a/xml/System.ComponentModel.Composition.Primitives/ContractBasedImportDefinition.xml
+++ b/xml/System.ComponentModel.Composition.Primitives/ContractBasedImportDefinition.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an import that is required by a <see cref="T:System.ComponentModel.Composition.Primitives.ComposablePart" /> object and that can specify both a contract name and metadata.</summary>
@@ -364,10 +360,6 @@ Overrides of this method can provide a more optimized execution of the <xref:Sys
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Composition.Primitives/Export.xml b/xml/System.ComponentModel.Composition.Primitives/Export.xml
index 8d97ff2981f..f131adec3e6 100644
--- a/xml/System.ComponentModel.Composition.Primitives/Export.xml
+++ b/xml/System.ComponentModel.Composition.Primitives/Export.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an export, which is a type that consists of a delay-created exported object and the metadata that describes that object.</summary>
@@ -243,12 +239,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -327,10 +317,6 @@ Overrides of this method should never return `null`.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.ComponentModel.Composition.Primitives/ExportDefinition.xml b/xml/System.ComponentModel.Composition.Primitives/ExportDefinition.xml
index f1ed0b5633d..99c2b62c81f 100644
--- a/xml/System.ComponentModel.Composition.Primitives/ExportDefinition.xml
+++ b/xml/System.ComponentModel.Composition.Primitives/ExportDefinition.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Describes the contract that a particular <see cref="T:System.ComponentModel.Composition.Primitives.Export" /> object satisfies.</summary>
diff --git a/xml/System.ComponentModel.Composition.Primitives/ExportedDelegate.xml b/xml/System.ComponentModel.Composition.Primitives/ExportedDelegate.xml
index 0dda971979d..f16f2717d07 100644
--- a/xml/System.ComponentModel.Composition.Primitives/ExportedDelegate.xml
+++ b/xml/System.ComponentModel.Composition.Primitives/ExportedDelegate.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a function exported by a <see cref="T:System.ComponentModel.Composition.Primitives.ComposablePart" />.</summary>
diff --git a/xml/System.ComponentModel.Composition.Primitives/ICompositionElement.xml b/xml/System.ComponentModel.Composition.Primitives/ICompositionElement.xml
index 02d95d94361..dca1a65c544 100644
--- a/xml/System.ComponentModel.Composition.Primitives/ICompositionElement.xml
+++ b/xml/System.ComponentModel.Composition.Primitives/ICompositionElement.xml
@@ -14,12 +14,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents an element that participates in composition.</summary>
     <remarks>To be added.</remarks>
@@ -75,10 +69,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Composition.Primitives.ICompositionElement</ReturnType>
diff --git a/xml/System.ComponentModel.Composition.Primitives/ImportDefinition.xml b/xml/System.ComponentModel.Composition.Primitives/ImportDefinition.xml
index f63e2bcb4fb..8a19d23bcc1 100644
--- a/xml/System.ComponentModel.Composition.Primitives/ImportDefinition.xml
+++ b/xml/System.ComponentModel.Composition.Primitives/ImportDefinition.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an import that is required by a <see cref="T:System.ComponentModel.Composition.Primitives.ComposablePart" /> object.</summary>
diff --git a/xml/System.ComponentModel.Composition.ReflectionModel/LazyMemberInfo.xml b/xml/System.ComponentModel.Composition.ReflectionModel/LazyMemberInfo.xml
index c8e32387a71..d0727e6d95f 100644
--- a/xml/System.ComponentModel.Composition.ReflectionModel/LazyMemberInfo.xml
+++ b/xml/System.ComponentModel.Composition.ReflectionModel/LazyMemberInfo.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a <see cref="T:System.Reflection.MemberInfo" /> object that does not load assemblies or create objects until requested.</summary>
@@ -176,12 +172,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Composition.ReflectionModel/ReflectionModelServices.xml b/xml/System.ComponentModel.Composition.ReflectionModel/ReflectionModelServices.xml
index bfee9564282..1d72670a0f7 100644
--- a/xml/System.ComponentModel.Composition.ReflectionModel/ReflectionModelServices.xml
+++ b/xml/System.ComponentModel.Composition.ReflectionModel/ReflectionModelServices.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Composition/AdaptationConstants.xml b/xml/System.ComponentModel.Composition/AdaptationConstants.xml
index ea374c416fc..05f9a74d9f3 100644
--- a/xml/System.ComponentModel.Composition/AdaptationConstants.xml
+++ b/xml/System.ComponentModel.Composition/AdaptationConstants.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains static metadata keys used by the composition system.</summary>
diff --git a/xml/System.ComponentModel.Composition/AttributedModelServices.xml b/xml/System.ComponentModel.Composition/AttributedModelServices.xml
index 78041e96fb1..8f9e2a8416d 100644
--- a/xml/System.ComponentModel.Composition/AttributedModelServices.xml
+++ b/xml/System.ComponentModel.Composition/AttributedModelServices.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains helper methods for using the MEF attributed programming model with composition.</summary>
diff --git a/xml/System.ComponentModel.Composition/CatalogReflectionContextAttribute.xml b/xml/System.ComponentModel.Composition/CatalogReflectionContextAttribute.xml
index 905ca7c7168..f8f1e96bd16 100644
--- a/xml/System.ComponentModel.Composition/CatalogReflectionContextAttribute.xml
+++ b/xml/System.ComponentModel.Composition/CatalogReflectionContextAttribute.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>When applied to a <see cref="T:System.Reflection.Assembly" /> object, enables an <see cref="T:System.ComponentModel.Composition.Hosting.AssemblyCatalog" /> object to discover custom <see cref="T:System.Reflection.ReflectionContext" /> objects.</summary>
diff --git a/xml/System.ComponentModel.Composition/ChangeRejectedException.xml b/xml/System.ComponentModel.Composition/ChangeRejectedException.xml
index a0b2c72b87b..633b012f7a7 100644
--- a/xml/System.ComponentModel.Composition/ChangeRejectedException.xml
+++ b/xml/System.ComponentModel.Composition/ChangeRejectedException.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -133,10 +129,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -179,12 +171,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
         <Parameter Name="innerException" Type="System.Exception" />
diff --git a/xml/System.ComponentModel.Composition/CompositionContractMismatchException.xml b/xml/System.ComponentModel.Composition/CompositionContractMismatchException.xml
index 6a6e5fbf5e4..92d54f2f568 100644
--- a/xml/System.ComponentModel.Composition/CompositionContractMismatchException.xml
+++ b/xml/System.ComponentModel.Composition/CompositionContractMismatchException.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The exception that is thrown when the underlying exported value or metadata of a <see cref="T:System.Lazy`1" /> or <see cref="T:System.Lazy`2" /> object cannot be cast to <c>T</c> or <c>TMetadataView</c>, respectively.</summary>
@@ -152,10 +148,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Composition/CompositionError.xml b/xml/System.ComponentModel.Composition/CompositionError.xml
index 17b36dc3c2f..1dd3a94a47d 100644
--- a/xml/System.ComponentModel.Composition/CompositionError.xml
+++ b/xml/System.ComponentModel.Composition/CompositionError.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -197,10 +193,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -290,10 +282,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Composition/CompositionException.xml b/xml/System.ComponentModel.Composition/CompositionException.xml
index e64b97680cb..3a7ed1238c5 100644
--- a/xml/System.ComponentModel.Composition/CompositionException.xml
+++ b/xml/System.ComponentModel.Composition/CompositionException.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -134,10 +130,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -168,10 +160,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Composition/ExportAttribute.xml b/xml/System.ComponentModel.Composition/ExportAttribute.xml
index 097b8f5989b..2f63f570980 100644
--- a/xml/System.ComponentModel.Composition/ExportAttribute.xml
+++ b/xml/System.ComponentModel.Composition/ExportAttribute.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that a type, property, field, or method provides a particular export.</summary>
diff --git a/xml/System.ComponentModel.Composition/ExportFactory`1.xml b/xml/System.ComponentModel.Composition/ExportFactory`1.xml
index 4894ccb6d74..59578be5a35 100644
--- a/xml/System.ComponentModel.Composition/ExportFactory`1.xml
+++ b/xml/System.ComponentModel.Composition/ExportFactory`1.xml
@@ -31,10 +31,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of the export.</typeparam>
diff --git a/xml/System.ComponentModel.Composition/ExportFactory`2.xml b/xml/System.ComponentModel.Composition/ExportFactory`2.xml
index 4b68287dd42..8f19a6ac44f 100644
--- a/xml/System.ComponentModel.Composition/ExportFactory`2.xml
+++ b/xml/System.ComponentModel.Composition/ExportFactory`2.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of the created part.</typeparam>
diff --git a/xml/System.ComponentModel.Composition/ExportLifetimeContext`1.xml b/xml/System.ComponentModel.Composition/ExportLifetimeContext`1.xml
index 762e9f6e36c..97afb51484a 100644
--- a/xml/System.ComponentModel.Composition/ExportLifetimeContext`1.xml
+++ b/xml/System.ComponentModel.Composition/ExportLifetimeContext`1.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of the exported value.</typeparam>
diff --git a/xml/System.ComponentModel.Composition/ExportMetadataAttribute.xml b/xml/System.ComponentModel.Composition/ExportMetadataAttribute.xml
index aee754dcbbf..98d8ddb9587 100644
--- a/xml/System.ComponentModel.Composition/ExportMetadataAttribute.xml
+++ b/xml/System.ComponentModel.Composition/ExportMetadataAttribute.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies metadata for a type, property, field, or method marked with the <see cref="T:System.ComponentModel.Composition.ExportAttribute" />.</summary>
@@ -114,10 +110,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Composition/ICompositionService.xml b/xml/System.ComponentModel.Composition/ICompositionService.xml
index 068d7154b06..09978f2e5ea 100644
--- a/xml/System.ComponentModel.Composition/ICompositionService.xml
+++ b/xml/System.ComponentModel.Composition/ICompositionService.xml
@@ -14,12 +14,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides methods to satisfy imports on an existing part instance.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.ComponentModel.Composition/ImportAttribute.xml b/xml/System.ComponentModel.Composition/ImportAttribute.xml
index bcd183b6055..ed1606b9756 100644
--- a/xml/System.ComponentModel.Composition/ImportAttribute.xml
+++ b/xml/System.ComponentModel.Composition/ImportAttribute.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that a property, field, or parameter value should be provided by the <see cref="T:System.ComponentModel.Composition.Hosting.CompositionContainer" />.object.</summary>
diff --git a/xml/System.ComponentModel.Composition/ImportCardinalityMismatchException.xml b/xml/System.ComponentModel.Composition/ImportCardinalityMismatchException.xml
index 5860b97bd4f..a69d9cc2f1c 100644
--- a/xml/System.ComponentModel.Composition/ImportCardinalityMismatchException.xml
+++ b/xml/System.ComponentModel.Composition/ImportCardinalityMismatchException.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The exception that is thrown when the cardinality of an import is not compatible with the cardinality of the matching exports.</summary>
@@ -160,10 +156,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Composition/ImportManyAttribute.xml b/xml/System.ComponentModel.Composition/ImportManyAttribute.xml
index 4e6e4ce2f10..68a5e0d7650 100644
--- a/xml/System.ComponentModel.Composition/ImportManyAttribute.xml
+++ b/xml/System.ComponentModel.Composition/ImportManyAttribute.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that a property, field, or parameter should be populated with all matching exports by the <see cref="T:System.ComponentModel.Composition.Hosting.CompositionContainer" /> object.</summary>
diff --git a/xml/System.ComponentModel.Composition/InheritedExportAttribute.xml b/xml/System.ComponentModel.Composition/InheritedExportAttribute.xml
index 4f8567d03af..9eff31401cc 100644
--- a/xml/System.ComponentModel.Composition/InheritedExportAttribute.xml
+++ b/xml/System.ComponentModel.Composition/InheritedExportAttribute.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that a type provides a particular export, and that subclasses of that type will also provide that export.</summary>
diff --git a/xml/System.ComponentModel.Composition/MetadataViewImplementationAttribute.xml b/xml/System.ComponentModel.Composition/MetadataViewImplementationAttribute.xml
index 3838053ba07..9374c34484a 100644
--- a/xml/System.ComponentModel.Composition/MetadataViewImplementationAttribute.xml
+++ b/xml/System.ComponentModel.Composition/MetadataViewImplementationAttribute.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the type used to implement a metadata view.</summary>
diff --git a/xml/System.ComponentModel.Composition/PartCreationPolicyAttribute.xml b/xml/System.ComponentModel.Composition/PartCreationPolicyAttribute.xml
index 9179c015512..be7b622cb9f 100644
--- a/xml/System.ComponentModel.Composition/PartCreationPolicyAttribute.xml
+++ b/xml/System.ComponentModel.Composition/PartCreationPolicyAttribute.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the <see cref="P:System.ComponentModel.Composition.PartCreationPolicyAttribute.CreationPolicy" /> for a part.</summary>
diff --git a/xml/System.ComponentModel.Composition/PartMetadataAttribute.xml b/xml/System.ComponentModel.Composition/PartMetadataAttribute.xml
index 8c62b69109a..b32170ac8c8 100644
--- a/xml/System.ComponentModel.Composition/PartMetadataAttribute.xml
+++ b/xml/System.ComponentModel.Composition/PartMetadataAttribute.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies metadata for a part.</summary>
@@ -80,10 +76,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.DataAnnotations.Schema/ColumnAttribute.xml b/xml/System.ComponentModel.DataAnnotations.Schema/ColumnAttribute.xml
index 8b8a97a2b67..9f6eb921e1c 100644
--- a/xml/System.ComponentModel.DataAnnotations.Schema/ColumnAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations.Schema/ColumnAttribute.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the database column that a property is mapped to.</summary>
@@ -119,12 +115,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" />
       </Parameters>
diff --git a/xml/System.ComponentModel.DataAnnotations.Schema/ForeignKeyAttribute.xml b/xml/System.ComponentModel.DataAnnotations.Schema/ForeignKeyAttribute.xml
index ea2f7f90ef8..b57a8f8bbee 100644
--- a/xml/System.ComponentModel.DataAnnotations.Schema/ForeignKeyAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations.Schema/ForeignKeyAttribute.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Denotes a property used as a foreign key in a relationship. </summary>
diff --git a/xml/System.ComponentModel.DataAnnotations.Schema/InversePropertyAttribute.xml b/xml/System.ComponentModel.DataAnnotations.Schema/InversePropertyAttribute.xml
index 00b7dc9f581..879db29f6f5 100644
--- a/xml/System.ComponentModel.DataAnnotations.Schema/InversePropertyAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations.Schema/InversePropertyAttribute.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the inverse of a navigation property that represents the other end of the same relationship.</summary>
diff --git a/xml/System.ComponentModel.DataAnnotations.Schema/TableAttribute.xml b/xml/System.ComponentModel.DataAnnotations.Schema/TableAttribute.xml
index 19a63d24772..1bac5d8208c 100644
--- a/xml/System.ComponentModel.DataAnnotations.Schema/TableAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations.Schema/TableAttribute.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the database table that a class is mapped to.</summary>
@@ -155,14 +151,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.ComponentModel.DataAnnotations/AllowedValuesAttribute.xml b/xml/System.ComponentModel.DataAnnotations/AllowedValuesAttribute.xml
index d0768c3d92f..65f5b78cc70 100644
--- a/xml/System.ComponentModel.DataAnnotations/AllowedValuesAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/AllowedValuesAttribute.xml
@@ -75,12 +75,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/AssociatedMetadataTypeTypeDescriptionProvider.xml b/xml/System.ComponentModel.DataAnnotations/AssociatedMetadataTypeTypeDescriptionProvider.xml
index bcf81d68443..94cb379d6ca 100644
--- a/xml/System.ComponentModel.DataAnnotations/AssociatedMetadataTypeTypeDescriptionProvider.xml
+++ b/xml/System.ComponentModel.DataAnnotations/AssociatedMetadataTypeTypeDescriptionProvider.xml
@@ -31,10 +31,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Extends the metadata information for a class by adding attributes and property information that is defined in an associated class.</summary>
diff --git a/xml/System.ComponentModel.DataAnnotations/AssociationAttribute.xml b/xml/System.ComponentModel.DataAnnotations/AssociationAttribute.xml
index 64c61cda7ea..b16ff4fac34 100644
--- a/xml/System.ComponentModel.DataAnnotations/AssociationAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/AssociationAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that an entity member represents a data relationship, such as a foreign key relationship.</summary>
diff --git a/xml/System.ComponentModel.DataAnnotations/Base64StringAttribute.xml b/xml/System.ComponentModel.DataAnnotations/Base64StringAttribute.xml
index de30553892d..4b5d1fb66a8 100644
--- a/xml/System.ComponentModel.DataAnnotations/Base64StringAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/Base64StringAttribute.xml
@@ -56,12 +56,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/CompareAttribute.xml b/xml/System.ComponentModel.DataAnnotations/CompareAttribute.xml
index 076a9368a50..65142b8c1d8 100644
--- a/xml/System.ComponentModel.DataAnnotations/CompareAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/CompareAttribute.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an attribute that compares two properties.</summary>
@@ -160,12 +156,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.DataAnnotations.ValidationResult</ReturnType>
       </ReturnValue>
@@ -258,10 +248,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.ComponentModel.DataAnnotations/CreditCardAttribute.xml b/xml/System.ComponentModel.DataAnnotations/CreditCardAttribute.xml
index 726890742c7..617dd7c8328 100644
--- a/xml/System.ComponentModel.DataAnnotations/CreditCardAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/CreditCardAttribute.xml
@@ -109,12 +109,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/CustomValidationAttribute.xml b/xml/System.ComponentModel.DataAnnotations/CustomValidationAttribute.xml
index 5820d508aa3..9b7c95d7e93 100644
--- a/xml/System.ComponentModel.DataAnnotations/CustomValidationAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/CustomValidationAttribute.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies a custom validation method that is used to validate a property or class instance.</summary>
@@ -189,12 +185,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.DataAnnotations.ValidationResult</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/DataTypeAttribute.xml b/xml/System.ComponentModel.DataAnnotations/DataTypeAttribute.xml
index 67761b2b87a..f996ad84443 100644
--- a/xml/System.ComponentModel.DataAnnotations/DataTypeAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/DataTypeAttribute.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Field | System.AttributeTargets.Property, AllowMultiple=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Field | System.AttributeTargets.Property, AllowMultiple=false)&gt;]</AttributeName>
@@ -202,12 +198,6 @@
         <AssemblyVersion>3.5.0.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="customDataType" Type="System.String" />
       </Parameters>
@@ -390,12 +380,6 @@
         <AssemblyVersion>3.5.0.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/DeniedValuesAttribute.xml b/xml/System.ComponentModel.DataAnnotations/DeniedValuesAttribute.xml
index a63987f36e4..0ec08f46e21 100644
--- a/xml/System.ComponentModel.DataAnnotations/DeniedValuesAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/DeniedValuesAttribute.xml
@@ -75,12 +75,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/DisplayAttribute.xml b/xml/System.ComponentModel.DataAnnotations/DisplayAttribute.xml
index 303a71dc25f..91eebd0b275 100644
--- a/xml/System.ComponentModel.DataAnnotations/DisplayAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/DisplayAttribute.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a general-purpose attribute that lets you specify localizable strings for types and members of entity partial classes.</summary>
diff --git a/xml/System.ComponentModel.DataAnnotations/DisplayColumnAttribute.xml b/xml/System.ComponentModel.DataAnnotations/DisplayColumnAttribute.xml
index 297efb7e078..2fef15dd6a6 100644
--- a/xml/System.ComponentModel.DataAnnotations/DisplayColumnAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/DisplayColumnAttribute.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the column that is displayed in the referred table as a foreign-key column.</summary>
@@ -353,10 +349,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.DataAnnotations/DisplayFormatAttribute.xml b/xml/System.ComponentModel.DataAnnotations/DisplayFormatAttribute.xml
index f70a747809e..9156ef3dca7 100644
--- a/xml/System.ComponentModel.DataAnnotations/DisplayFormatAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/DisplayFormatAttribute.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies how data fields are displayed and formatted by ASP.NET Dynamic Data.</summary>
diff --git a/xml/System.ComponentModel.DataAnnotations/EmailAddressAttribute.xml b/xml/System.ComponentModel.DataAnnotations/EmailAddressAttribute.xml
index f5f685e6047..88bfa3832ca 100644
--- a/xml/System.ComponentModel.DataAnnotations/EmailAddressAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/EmailAddressAttribute.xml
@@ -102,12 +102,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/EnumDataTypeAttribute.xml b/xml/System.ComponentModel.DataAnnotations/EnumDataTypeAttribute.xml
index 6da77cce15a..fae29a666e7 100644
--- a/xml/System.ComponentModel.DataAnnotations/EnumDataTypeAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/EnumDataTypeAttribute.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Enables a .NET enumeration to be mapped to a data column.</summary>
@@ -209,12 +205,6 @@ End Class
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/FileExtensionsAttribute.xml b/xml/System.ComponentModel.DataAnnotations/FileExtensionsAttribute.xml
index 9b82e09525f..9e5c8a3a37b 100644
--- a/xml/System.ComponentModel.DataAnnotations/FileExtensionsAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/FileExtensionsAttribute.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Validates file name extensions.</summary>
@@ -186,12 +182,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/FilterUIHintAttribute.xml b/xml/System.ComponentModel.DataAnnotations/FilterUIHintAttribute.xml
index c452f29fdab..8152a9c7ccc 100644
--- a/xml/System.ComponentModel.DataAnnotations/FilterUIHintAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/FilterUIHintAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an attribute that is used to specify the filtering behavior for a column.</summary>
@@ -351,12 +347,6 @@ End Class
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -484,10 +474,6 @@ End Class
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.ComponentModel.DataAnnotations/IValidatableObject.xml b/xml/System.ComponentModel.DataAnnotations/IValidatableObject.xml
index 4cdb4ec4256..2d3033dd1eb 100644
--- a/xml/System.ComponentModel.DataAnnotations/IValidatableObject.xml
+++ b/xml/System.ComponentModel.DataAnnotations/IValidatableObject.xml
@@ -29,12 +29,6 @@
     <TypeForwarding From="System.ComponentModel.DataAnnotations" FromVersion="4.0.0.0" To="System.ComponentModel.Annotations" ToVersion="0.0.0.0" FrameworkAlternate="netcore-2.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides a way for an object to be validated.</summary>
     <remarks>Instances of types that implement this interface can be checked to determine if they are valid.</remarks>
diff --git a/xml/System.ComponentModel.DataAnnotations/LengthAttribute.xml b/xml/System.ComponentModel.DataAnnotations/LengthAttribute.xml
index c3d6b7c215e..d3afa4fed0a 100644
--- a/xml/System.ComponentModel.DataAnnotations/LengthAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/LengthAttribute.xml
@@ -68,12 +68,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -100,12 +94,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/MaxLengthAttribute.xml b/xml/System.ComponentModel.DataAnnotations/MaxLengthAttribute.xml
index b9df95cbb0b..4dd4e08b7f0 100644
--- a/xml/System.ComponentModel.DataAnnotations/MaxLengthAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/MaxLengthAttribute.xml
@@ -166,12 +166,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -213,12 +207,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/MetadataTypeAttribute.xml b/xml/System.ComponentModel.DataAnnotations/MetadataTypeAttribute.xml
index ccf1b8303ef..140473b335a 100644
--- a/xml/System.ComponentModel.DataAnnotations/MetadataTypeAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/MetadataTypeAttribute.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Class, AllowMultiple=false, Inherited=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Class, AllowMultiple=false, Inherited=false)&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.DataAnnotations/MinLengthAttribute.xml b/xml/System.ComponentModel.DataAnnotations/MinLengthAttribute.xml
index 579698d81f7..9d555baade5 100644
--- a/xml/System.ComponentModel.DataAnnotations/MinLengthAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/MinLengthAttribute.xml
@@ -111,12 +111,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -158,12 +152,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/PhoneAttribute.xml b/xml/System.ComponentModel.DataAnnotations/PhoneAttribute.xml
index e98bb7da72d..0210efc4788 100644
--- a/xml/System.ComponentModel.DataAnnotations/PhoneAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/PhoneAttribute.xml
@@ -102,12 +102,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/RangeAttribute.xml b/xml/System.ComponentModel.DataAnnotations/RangeAttribute.xml
index 5c762f016e1..f55919d77d0 100644
--- a/xml/System.ComponentModel.DataAnnotations/RangeAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/RangeAttribute.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Field | System.AttributeTargets.Property, AllowMultiple=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Field | System.AttributeTargets.Property, AllowMultiple=false)&gt;]</AttributeName>
@@ -370,12 +366,6 @@ This property has no effect on the constructors with <xref:System.Int32> or <xre
         <AssemblyVersion>3.5.0.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/RegularExpressionAttribute.xml b/xml/System.ComponentModel.DataAnnotations/RegularExpressionAttribute.xml
index bff8c6c2a42..710d10387f6 100644
--- a/xml/System.ComponentModel.DataAnnotations/RegularExpressionAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/RegularExpressionAttribute.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Field | System.AttributeTargets.Property, AllowMultiple=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Field | System.AttributeTargets.Property, AllowMultiple=false)&gt;]</AttributeName>
@@ -211,12 +207,6 @@ The regular expression searches for an exact match, not using `^` before and `$`
         <AssemblyVersion>3.5.0.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/RequiredAttribute.xml b/xml/System.ComponentModel.DataAnnotations/RequiredAttribute.xml
index e758bb2fe28..60dcef3b9ec 100644
--- a/xml/System.ComponentModel.DataAnnotations/RequiredAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/RequiredAttribute.xml
@@ -199,12 +199,6 @@
         <AssemblyVersion>3.5.0.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/StringLengthAttribute.xml b/xml/System.ComponentModel.DataAnnotations/StringLengthAttribute.xml
index 01e4ab6064c..d4dce1b8933 100644
--- a/xml/System.ComponentModel.DataAnnotations/StringLengthAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/StringLengthAttribute.xml
@@ -166,12 +166,6 @@ End Class
         <AssemblyVersion>3.5.0.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -221,12 +215,6 @@ End Class
         <AssemblyVersion>3.5.0.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/UIHintAttribute.xml b/xml/System.ComponentModel.DataAnnotations/UIHintAttribute.xml
index 02eef5a4dda..4a341894f9d 100644
--- a/xml/System.ComponentModel.DataAnnotations/UIHintAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/UIHintAttribute.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the template or user control that Dynamic Data uses to display a data field.</summary>
@@ -203,12 +199,6 @@
         <AssemblyVersion>3.5.0.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="uiHint" Type="System.String">
           <Attributes>
@@ -322,12 +312,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -420,10 +404,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.ComponentModel.DataAnnotations/UrlAttribute.xml b/xml/System.ComponentModel.DataAnnotations/UrlAttribute.xml
index 41e7480dfc5..f888e13a941 100644
--- a/xml/System.ComponentModel.DataAnnotations/UrlAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/UrlAttribute.xml
@@ -102,12 +102,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/ValidationAttribute.xml b/xml/System.ComponentModel.DataAnnotations/ValidationAttribute.xml
index 3149ab96b42..bfd083f6ec5 100644
--- a/xml/System.ComponentModel.DataAnnotations/ValidationAttribute.xml
+++ b/xml/System.ComponentModel.DataAnnotations/ValidationAttribute.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Serves as the base class for all validation attributes.</summary>
@@ -131,12 +127,6 @@ This constructor chooses a generic validation error message. If you subclass `Va
         <AssemblyVersion>3.5.0.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="errorMessageAccessor" Type="System.Func&lt;System.String&gt;" />
       </Parameters>
@@ -182,12 +172,6 @@ This constructor provides a resource accessor function that is used by the <xref
         <AssemblyVersion>3.5.0.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="errorMessage" Type="System.String" />
       </Parameters>
@@ -386,10 +370,6 @@ This property is the error message that you associate with the validation contro
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -435,12 +415,6 @@ This property is the error message that you associate with the validation contro
         <AssemblyVersion>3.5.0.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -721,12 +695,6 @@ This property is the error message that you associate with the validation contro
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -788,12 +756,6 @@ This property is the error message that you associate with the validation contro
         <AssemblyVersion>3.5.0.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/ValidationContext.xml b/xml/System.ComponentModel.DataAnnotations/ValidationContext.xml
index e3acec3234a..5c738e76abc 100644
--- a/xml/System.ComponentModel.DataAnnotations/ValidationContext.xml
+++ b/xml/System.ComponentModel.DataAnnotations/ValidationContext.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Describes the context in which a validation check is performed.</summary>
@@ -487,14 +483,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.DataAnnotations/ValidationException.xml b/xml/System.ComponentModel.DataAnnotations/ValidationException.xml
index 0640beccce8..2d894f1dceb 100644
--- a/xml/System.ComponentModel.DataAnnotations/ValidationException.xml
+++ b/xml/System.ComponentModel.DataAnnotations/ValidationException.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -207,10 +203,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -515,10 +507,6 @@ During deserialization, the exception is reconstituted from the <xref:System.Run
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.DataAnnotations.ValidationResult</ReturnType>
diff --git a/xml/System.ComponentModel.DataAnnotations/ValidationResult.xml b/xml/System.ComponentModel.DataAnnotations/ValidationResult.xml
index ce607725507..603f8255ac1 100644
--- a/xml/System.ComponentModel.DataAnnotations/ValidationResult.xml
+++ b/xml/System.ComponentModel.DataAnnotations/ValidationResult.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a container for the results of a validation request.</summary>
@@ -83,12 +79,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="validationResult" Type="System.ComponentModel.DataAnnotations.ValidationResult" />
       </Parameters>
@@ -282,10 +272,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -374,12 +360,6 @@ The `null` value is used to indicate success. Consumers of <xref:System.Componen
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.DataAnnotations/Validator.xml b/xml/System.ComponentModel.DataAnnotations/Validator.xml
index b0272193f8a..4f2f7bd0c0d 100644
--- a/xml/System.ComponentModel.DataAnnotations/Validator.xml
+++ b/xml/System.ComponentModel.DataAnnotations/Validator.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines a helper class that can be used to validate objects, properties, and methods when it is included in their associated <see cref="T:System.ComponentModel.DataAnnotations.ValidationAttribute" /> attributes.</summary>
diff --git a/xml/System.ComponentModel.Design.Serialization/BasicDesignerLoader+ReloadOptions.xml b/xml/System.ComponentModel.Design.Serialization/BasicDesignerLoader+ReloadOptions.xml
index 3e5bf6d0292..245824b8aef 100644
--- a/xml/System.ComponentModel.Design.Serialization/BasicDesignerLoader+ReloadOptions.xml
+++ b/xml/System.ComponentModel.Design.Serialization/BasicDesignerLoader+ReloadOptions.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Flags]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Flags&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the behavior of the <see cref="M:System.ComponentModel.Design.Serialization.BasicDesignerLoader.Reload(System.ComponentModel.Design.Serialization.BasicDesignerLoader.ReloadOptions)" /> method. These flags can be combined using the bitwise <see langword="OR" /> operator.</summary>
diff --git a/xml/System.ComponentModel.Design.Serialization/BasicDesignerLoader.xml b/xml/System.ComponentModel.Design.Serialization/BasicDesignerLoader.xml
index 902b9e2e865..4e141efaf59 100644
--- a/xml/System.ComponentModel.Design.Serialization/BasicDesignerLoader.xml
+++ b/xml/System.ComponentModel.Design.Serialization/BasicDesignerLoader.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an implementation of the <see cref="T:System.ComponentModel.Design.Serialization.IDesignerLoaderService" /> interface.</summary>
@@ -626,12 +622,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -810,14 +800,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1064,12 +1046,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design.Serialization/CodeDomComponentSerializationService.xml b/xml/System.ComponentModel.Design.Serialization/CodeDomComponentSerializationService.xml
index bbbb76ec7d8..4a563822fe3 100644
--- a/xml/System.ComponentModel.Design.Serialization/CodeDomComponentSerializationService.xml
+++ b/xml/System.ComponentModel.Design.Serialization/CodeDomComponentSerializationService.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Serializes a set of components into a serialization store.</summary>
@@ -129,10 +125,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="provider" Type="System.IServiceProvider" />
diff --git a/xml/System.ComponentModel.Design.Serialization/CodeDomDesignerLoader.xml b/xml/System.ComponentModel.Design.Serialization/CodeDomDesignerLoader.xml
index 612debf2dd8..532053b59d6 100644
--- a/xml/System.ComponentModel.Design.Serialization/CodeDomDesignerLoader.xml
+++ b/xml/System.ComponentModel.Design.Serialization/CodeDomDesignerLoader.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the base class for implementing a CodeDOM-based designer loader.</summary>
@@ -124,10 +120,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.CodeDom.Compiler.CodeDomProvider</ReturnType>
@@ -383,12 +375,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -435,12 +421,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -847,10 +827,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.ITypeResolutionService</ReturnType>
diff --git a/xml/System.ComponentModel.Design.Serialization/CodeDomLocalizationProvider.xml b/xml/System.ComponentModel.Design.Serialization/CodeDomLocalizationProvider.xml
index 54f43bae335..6f21b1aff73 100644
--- a/xml/System.ComponentModel.Design.Serialization/CodeDomLocalizationProvider.xml
+++ b/xml/System.ComponentModel.Design.Serialization/CodeDomLocalizationProvider.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides CodeDOM resource serialization services. This class cannot be inherited.</summary>
@@ -231,12 +227,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design.Serialization/CodeDomSerializer.xml b/xml/System.ComponentModel.Design.Serialization/CodeDomSerializer.xml
index d080228e867..a05f3480e22 100644
--- a/xml/System.ComponentModel.Design.Serialization/CodeDomSerializer.xml
+++ b/xml/System.ComponentModel.Design.Serialization/CodeDomSerializer.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Serializes an object graph to a series of CodeDOM statements. This class provides an abstract base class for a serializer.</summary>
@@ -348,12 +344,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design.Serialization/CodeDomSerializerBase.xml b/xml/System.ComponentModel.Design.Serialization/CodeDomSerializerBase.xml
index 88cfaa2c2a6..7d5b87ac814 100644
--- a/xml/System.ComponentModel.Design.Serialization/CodeDomSerializerBase.xml
+++ b/xml/System.ComponentModel.Design.Serialization/CodeDomSerializerBase.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a base class for <see cref="T:System.ComponentModel.Design.Serialization.CodeDomSerializer" /> classes.</summary>
@@ -85,12 +81,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -658,12 +648,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.Serialization.CodeDomSerializer</ReturnType>
       </ReturnValue>
@@ -1460,12 +1444,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.CodeDom.CodeExpression</ReturnType>
       </ReturnValue>
@@ -1558,10 +1536,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.CodeDom.CodeExpression</ReturnType>
@@ -1628,12 +1602,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.CodeDom.CodeExpression</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design.Serialization/CodeDomSerializerException.xml b/xml/System.ComponentModel.Design.Serialization/CodeDomSerializerException.xml
index 4491dd5136b..f5c4116ec32 100644
--- a/xml/System.ComponentModel.Design.Serialization/CodeDomSerializerException.xml
+++ b/xml/System.ComponentModel.Design.Serialization/CodeDomSerializerException.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The exception that is thrown when line number information is available for a serialization error.</summary>
@@ -135,12 +131,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="ex" Type="System.Exception" Index="0" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0">
           <Attributes>
@@ -254,12 +244,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" Index="0" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0">
           <Attributes>
@@ -308,10 +292,6 @@
           <AttributeName Language="C#">[System.Obsolete(DiagnosticId="SYSLIB0051")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete(DiagnosticId="SYSLIB0051")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.ComponentModel.Design.Serialization/CollectionCodeDomSerializer.xml b/xml/System.ComponentModel.Design.Serialization/CollectionCodeDomSerializer.xml
index 28fd934c7c9..ae58465462a 100644
--- a/xml/System.ComponentModel.Design.Serialization/CollectionCodeDomSerializer.xml
+++ b/xml/System.ComponentModel.Design.Serialization/CollectionCodeDomSerializer.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Serializes collections.</summary>
diff --git a/xml/System.ComponentModel.Design.Serialization/ComponentSerializationService.xml b/xml/System.ComponentModel.Design.Serialization/ComponentSerializationService.xml
index f20e9c69018..47bf5b59a91 100644
--- a/xml/System.ComponentModel.Design.Serialization/ComponentSerializationService.xml
+++ b/xml/System.ComponentModel.Design.Serialization/ComponentSerializationService.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the base class for serializing a set of components or serializable objects into a serialization store.</summary>
diff --git a/xml/System.ComponentModel.Design.Serialization/ContextStack.xml b/xml/System.ComponentModel.Design.Serialization/ContextStack.xml
index 85fa4a4d53f..119452c98fa 100644
--- a/xml/System.ComponentModel.Design.Serialization/ContextStack.xml
+++ b/xml/System.ComponentModel.Design.Serialization/ContextStack.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a stack object that can be used by a serializer to make information available to nested serializers.</summary>
@@ -160,12 +156,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -323,12 +313,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -435,12 +419,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design.Serialization/DefaultSerializationProviderAttribute.xml b/xml/System.ComponentModel.Design.Serialization/DefaultSerializationProviderAttribute.xml
index 7cd5059ae77..fa65a430b2a 100644
--- a/xml/System.ComponentModel.Design.Serialization/DefaultSerializationProviderAttribute.xml
+++ b/xml/System.ComponentModel.Design.Serialization/DefaultSerializationProviderAttribute.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.ComponentModel.Design.Serialization.DefaultSerializationProviderAttribute" /> attribute is placed on a serializer to indicate the class to use as a default provider of that type of serializer.</summary>
diff --git a/xml/System.ComponentModel.Design.Serialization/DesignerLoader.xml b/xml/System.ComponentModel.Design.Serialization/DesignerLoader.xml
index 3cbe428c823..c79a7c1a7c3 100644
--- a/xml/System.ComponentModel.Design.Serialization/DesignerLoader.xml
+++ b/xml/System.ComponentModel.Design.Serialization/DesignerLoader.xml
@@ -134,12 +134,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design.Serialization/DesignerSerializationManager.xml b/xml/System.ComponentModel.Design.Serialization/DesignerSerializationManager.xml
index 604440d6a38..68ae60ac435 100644
--- a/xml/System.ComponentModel.Design.Serialization/DesignerSerializationManager.xml
+++ b/xml/System.ComponentModel.Design.Serialization/DesignerSerializationManager.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an implementation of the <see cref="T:System.ComponentModel.Design.Serialization.IDesignerSerializationManager" /> interface.</summary>
@@ -192,12 +188,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="provider" Type="System.IServiceProvider" />
       </Parameters>
@@ -249,14 +239,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.IContainer</ReturnType>
@@ -448,12 +430,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
       </ReturnValue>
@@ -490,12 +466,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -595,12 +565,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
       </ReturnValue>
@@ -848,14 +812,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -953,14 +909,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -998,14 +946,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1293,10 +1233,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.ComponentModel.Design.Serialization/DesignerSerializerAttribute.xml b/xml/System.ComponentModel.Design.Serialization/DesignerSerializerAttribute.xml
index a801fa868db..b86fa35b47a 100644
--- a/xml/System.ComponentModel.Design.Serialization/DesignerSerializerAttribute.xml
+++ b/xml/System.ComponentModel.Design.Serialization/DesignerSerializerAttribute.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates a serializer for the serialization manager to use to serialize the values of the type this attribute is applied to. This class cannot be inherited.</summary>
@@ -184,12 +180,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="serializerTypeName" Type="System.String">
           <Attributes>
@@ -244,12 +234,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="serializerType" Type="System.Type" />
         <Parameter Name="baseSerializerType" Type="System.Type" />
@@ -406,10 +390,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.ComponentModel.Design.Serialization/ExpressionContext.xml b/xml/System.ComponentModel.Design.Serialization/ExpressionContext.xml
index 1abccbe9bc5..bbdd0b237c4 100644
--- a/xml/System.ComponentModel.Design.Serialization/ExpressionContext.xml
+++ b/xml/System.ComponentModel.Design.Serialization/ExpressionContext.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a means of passing context state among serializers. This class cannot be inherited.</summary>
@@ -333,10 +329,6 @@ button1.Text = rm.GetString("button1_Text");
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.ComponentModel.Design.Serialization/ICodeDomDesignerReload.xml b/xml/System.ComponentModel.Design.Serialization/ICodeDomDesignerReload.xml
index c716df2c5d8..62ee38b4c09 100644
--- a/xml/System.ComponentModel.Design.Serialization/ICodeDomDesignerReload.xml
+++ b/xml/System.ComponentModel.Design.Serialization/ICodeDomDesignerReload.xml
@@ -29,12 +29,6 @@
     <TypeForwarding From="System.Design" FromVersion="9.0.0.0" To="System.Windows.Forms.Design" ToVersion="9.0.0.0" FrameworkAlternate="windowsdesktop-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an interface that can be used to optimize the reloading of a designer.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel.Design.Serialization/IDesignerLoaderHost.xml b/xml/System.ComponentModel.Design.Serialization/IDesignerLoaderHost.xml
index 6e7478c0d45..4888cf0f6fa 100644
--- a/xml/System.ComponentModel.Design.Serialization/IDesignerLoaderHost.xml
+++ b/xml/System.ComponentModel.Design.Serialization/IDesignerLoaderHost.xml
@@ -102,12 +102,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design.Serialization/IDesignerLoaderService.xml b/xml/System.ComponentModel.Design.Serialization/IDesignerLoaderService.xml
index d57887da340..5493a92e2ab 100644
--- a/xml/System.ComponentModel.Design.Serialization/IDesignerLoaderService.xml
+++ b/xml/System.ComponentModel.Design.Serialization/IDesignerLoaderService.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an interface that can extend a designer loader to support asynchronous loading of external components.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel.Design.Serialization/IDesignerSerializationManager.xml b/xml/System.ComponentModel.Design.Serialization/IDesignerSerializationManager.xml
index 879d5e7a791..6c8b9f71d8f 100644
--- a/xml/System.ComponentModel.Design.Serialization/IDesignerSerializationManager.xml
+++ b/xml/System.ComponentModel.Design.Serialization/IDesignerSerializationManager.xml
@@ -41,12 +41,6 @@
       <InterfaceName>System.IServiceProvider</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an interface that can manage design-time serialization.</summary>
     <remarks>
@@ -367,12 +361,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design.Serialization/IDesignerSerializationProvider.xml b/xml/System.ComponentModel.Design.Serialization/IDesignerSerializationProvider.xml
index d8ee64f77bf..ebafcac7d46 100644
--- a/xml/System.ComponentModel.Design.Serialization/IDesignerSerializationProvider.xml
+++ b/xml/System.ComponentModel.Design.Serialization/IDesignerSerializationProvider.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an interface that enables access to a serializer.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel.Design.Serialization/IDesignerSerializationService.xml b/xml/System.ComponentModel.Design.Serialization/IDesignerSerializationService.xml
index b735e571a5b..12ad0722476 100644
--- a/xml/System.ComponentModel.Design.Serialization/IDesignerSerializationService.xml
+++ b/xml/System.ComponentModel.Design.Serialization/IDesignerSerializationService.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an interface that can invoke serialization and deserialization.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel.Design.Serialization/INameCreationService.xml b/xml/System.ComponentModel.Design.Serialization/INameCreationService.xml
index 3ab05ffc051..893797fc500 100644
--- a/xml/System.ComponentModel.Design.Serialization/INameCreationService.xml
+++ b/xml/System.ComponentModel.Design.Serialization/INameCreationService.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides a service that can generate unique names for objects.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel.Design.Serialization/InstanceDescriptor.xml b/xml/System.ComponentModel.Design.Serialization/InstanceDescriptor.xml
index 64fd9ebbc48..b5be315aa82 100644
--- a/xml/System.ComponentModel.Design.Serialization/InstanceDescriptor.xml
+++ b/xml/System.ComponentModel.Design.Serialization/InstanceDescriptor.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the information necessary to create an instance of an object. This class cannot be inherited.</summary>
@@ -252,10 +248,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Design.Serialization/MemberCodeDomSerializer.xml b/xml/System.ComponentModel.Design.Serialization/MemberCodeDomSerializer.xml
index db5d18a5702..2dc85529b00 100644
--- a/xml/System.ComponentModel.Design.Serialization/MemberCodeDomSerializer.xml
+++ b/xml/System.ComponentModel.Design.Serialization/MemberCodeDomSerializer.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the base class for serializing a reflection primitive within the object graph.</summary>
diff --git a/xml/System.ComponentModel.Design.Serialization/MemberRelationship.xml b/xml/System.ComponentModel.Design.Serialization/MemberRelationship.xml
index 997373380f4..204882b5be7 100644
--- a/xml/System.ComponentModel.Design.Serialization/MemberRelationship.xml
+++ b/xml/System.ComponentModel.Design.Serialization/MemberRelationship.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a single relationship between an object and a member.</summary>
@@ -230,12 +226,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -520,10 +510,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Design.Serialization/MemberRelationshipService.xml b/xml/System.ComponentModel.Design.Serialization/MemberRelationshipService.xml
index fec90098316..e3d2ba1f541 100644
--- a/xml/System.ComponentModel.Design.Serialization/MemberRelationshipService.xml
+++ b/xml/System.ComponentModel.Design.Serialization/MemberRelationshipService.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the base class for relating one member to another.</summary>
diff --git a/xml/System.ComponentModel.Design.Serialization/ObjectStatementCollection.xml b/xml/System.ComponentModel.Design.Serialization/ObjectStatementCollection.xml
index d051ed9114f..5ac657e6dc3 100644
--- a/xml/System.ComponentModel.Design.Serialization/ObjectStatementCollection.xml
+++ b/xml/System.ComponentModel.Design.Serialization/ObjectStatementCollection.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Holds a table of statements that is offered by the <see cref="T:System.ComponentModel.Design.Serialization.StatementContext" />. This class cannot be inherited.</summary>
diff --git a/xml/System.ComponentModel.Design.Serialization/ResolveNameEventArgs.xml b/xml/System.ComponentModel.Design.Serialization/ResolveNameEventArgs.xml
index ae3a6bfbf1c..f9adb6c11bf 100644
--- a/xml/System.ComponentModel.Design.Serialization/ResolveNameEventArgs.xml
+++ b/xml/System.ComponentModel.Design.Serialization/ResolveNameEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.ComponentModel.Design.Serialization.IDesignerSerializationManager.ResolveName" /> event.</summary>
diff --git a/xml/System.ComponentModel.Design.Serialization/RootContext.xml b/xml/System.ComponentModel.Design.Serialization/RootContext.xml
index f80f3812992..d5d98f24a86 100644
--- a/xml/System.ComponentModel.Design.Serialization/RootContext.xml
+++ b/xml/System.ComponentModel.Design.Serialization/RootContext.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A <see cref="T:System.ComponentModel.Design.Serialization.CodeDomSerializer" /> adds a root context to provide a definition of the root object. This class cannot be inherited.</summary>
diff --git a/xml/System.ComponentModel.Design.Serialization/RootDesignerSerializerAttribute.xml b/xml/System.ComponentModel.Design.Serialization/RootDesignerSerializerAttribute.xml
index 9af256da57f..a179d2e0c9c 100644
--- a/xml/System.ComponentModel.Design.Serialization/RootDesignerSerializerAttribute.xml
+++ b/xml/System.ComponentModel.Design.Serialization/RootDesignerSerializerAttribute.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
       <AttributeName Language="C#">[System.Obsolete("This attribute has been deprecated. Use DesignerSerializerAttribute instead.  For example, to specify a root designer for CodeDom, use DesignerSerializerAttribute(...,typeof(TypeCodeDomSerializer)).  http://go.microsoft.com/fwlink/?linkid=14202")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("This attribute has been deprecated. Use DesignerSerializerAttribute instead.  For example, to specify a root designer for CodeDom, use DesignerSerializerAttribute(...,typeof(TypeCodeDomSerializer)).  http://go.microsoft.com/fwlink/?linkid=14202")&gt;]</AttributeName>
@@ -199,12 +195,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="serializerTypeName" Type="System.String" />
         <Parameter Name="baseSerializerType" Type="System.Type" />
@@ -257,12 +247,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="serializerType" Type="System.Type" />
         <Parameter Name="baseSerializerType" Type="System.Type" />
@@ -470,10 +454,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.ComponentModel.Design.Serialization/SerializationStore.xml b/xml/System.ComponentModel.Design.Serialization/SerializationStore.xml
index aae32ec9455..925a3eb8af0 100644
--- a/xml/System.ComponentModel.Design.Serialization/SerializationStore.xml
+++ b/xml/System.ComponentModel.Design.Serialization/SerializationStore.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the base class for storing serialization data for the <see cref="T:System.ComponentModel.Design.Serialization.ComponentSerializationService" />.</summary>
diff --git a/xml/System.ComponentModel.Design.Serialization/SerializeAbsoluteContext.xml b/xml/System.ComponentModel.Design.Serialization/SerializeAbsoluteContext.xml
index d4227d71f48..50e01b4611b 100644
--- a/xml/System.ComponentModel.Design.Serialization/SerializeAbsoluteContext.xml
+++ b/xml/System.ComponentModel.Design.Serialization/SerializeAbsoluteContext.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that serializers should handle default values. This class cannot be inherited.</summary>
diff --git a/xml/System.ComponentModel.Design.Serialization/StatementContext.xml b/xml/System.ComponentModel.Design.Serialization/StatementContext.xml
index 6de749bfb47..4e7119e1eea 100644
--- a/xml/System.ComponentModel.Design.Serialization/StatementContext.xml
+++ b/xml/System.ComponentModel.Design.Serialization/StatementContext.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a location into which statements can be serialized. This class cannot be inherited.</summary>
diff --git a/xml/System.ComponentModel.Design.Serialization/TypeCodeDomSerializer.xml b/xml/System.ComponentModel.Design.Serialization/TypeCodeDomSerializer.xml
index 2d60717d7dc..31ff1d1b28c 100644
--- a/xml/System.ComponentModel.Design.Serialization/TypeCodeDomSerializer.xml
+++ b/xml/System.ComponentModel.Design.Serialization/TypeCodeDomSerializer.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Serializes an object to a new type.</summary>
diff --git a/xml/System.ComponentModel.Design/ActiveDesignSurfaceChangedEventArgs.xml b/xml/System.ComponentModel.Design/ActiveDesignSurfaceChangedEventArgs.xml
index 0083b497b11..444ce81409e 100644
--- a/xml/System.ComponentModel.Design/ActiveDesignSurfaceChangedEventArgs.xml
+++ b/xml/System.ComponentModel.Design/ActiveDesignSurfaceChangedEventArgs.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.ComponentModel.Design.DesignSurfaceManager.ActiveDesignSurfaceChanged" /> event.</summary>
diff --git a/xml/System.ComponentModel.Design/ActiveDesignerEventArgs.xml b/xml/System.ComponentModel.Design/ActiveDesignerEventArgs.xml
index 6f9da989934..37a9d46c2d4 100644
--- a/xml/System.ComponentModel.Design/ActiveDesignerEventArgs.xml
+++ b/xml/System.ComponentModel.Design/ActiveDesignerEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="P:System.ComponentModel.Design.IDesignerEventService.ActiveDesigner" /> event.</summary>
diff --git a/xml/System.ComponentModel.Design/BinaryEditor.xml b/xml/System.ComponentModel.Design/BinaryEditor.xml
index 24358f484d3..50b5d963902 100644
--- a/xml/System.ComponentModel.Design/BinaryEditor.xml
+++ b/xml/System.ComponentModel.Design/BinaryEditor.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a user interface for editing binary data.</summary>
@@ -111,12 +107,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -165,12 +155,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Design.UITypeEditorEditStyle</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design/ByteViewer.xml b/xml/System.ComponentModel.Design/ByteViewer.xml
index 1df25f61da4..edc1f903994 100644
--- a/xml/System.ComponentModel.Design/ByteViewer.xml
+++ b/xml/System.ComponentModel.Design/ByteViewer.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Displays byte arrays in hexadecimal, ANSI, and Unicode formats.</summary>
diff --git a/xml/System.ComponentModel.Design/CheckoutException.xml b/xml/System.ComponentModel.Design/CheckoutException.xml
index 5ff0bc47370..9021b7f5a48 100644
--- a/xml/System.ComponentModel.Design/CheckoutException.xml
+++ b/xml/System.ComponentModel.Design/CheckoutException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -208,10 +204,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Design/CollectionEditor+CollectionForm.xml b/xml/System.ComponentModel.Design/CollectionEditor+CollectionForm.xml
index 635c70cd5d7..9f8741db70a 100644
--- a/xml/System.ComponentModel.Design/CollectionEditor+CollectionForm.xml
+++ b/xml/System.ComponentModel.Design/CollectionEditor+CollectionForm.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a modal dialog box for editing the contents of a collection using a <see cref="T:System.Drawing.Design.UITypeEditor" />.</summary>
@@ -307,10 +303,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.ITypeDescriptorContext</ReturnType>
@@ -479,14 +471,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.ComponentModel.Design/CollectionEditor.xml b/xml/System.ComponentModel.Design/CollectionEditor.xml
index 292604fd629..377e6dfb568 100644
--- a/xml/System.ComponentModel.Design/CollectionEditor.xml
+++ b/xml/System.ComponentModel.Design/CollectionEditor.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a user interface that can edit most types of collections at design time.</summary>
@@ -367,10 +363,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.ITypeDescriptorContext</ReturnType>
@@ -627,12 +619,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -731,12 +717,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Design.UITypeEditorEditStyle</ReturnType>
       </ReturnValue>
@@ -995,12 +975,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design/CommandID.xml b/xml/System.ComponentModel.Design/CommandID.xml
index 7ee5b02a70a..b05134077b4 100644
--- a/xml/System.ComponentModel.Design/CommandID.xml
+++ b/xml/System.ComponentModel.Design/CommandID.xml
@@ -149,12 +149,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -342,12 +336,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design/ComponentChangedEventArgs.xml b/xml/System.ComponentModel.Design/ComponentChangedEventArgs.xml
index b3f0a783f24..2de5c230e01 100644
--- a/xml/System.ComponentModel.Design/ComponentChangedEventArgs.xml
+++ b/xml/System.ComponentModel.Design/ComponentChangedEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Design/ComponentChangingEventArgs.xml b/xml/System.ComponentModel.Design/ComponentChangingEventArgs.xml
index 42dbb309e70..cd2a359e41f 100644
--- a/xml/System.ComponentModel.Design/ComponentChangingEventArgs.xml
+++ b/xml/System.ComponentModel.Design/ComponentChangingEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Design/ComponentDesigner.xml b/xml/System.ComponentModel.Design/ComponentDesigner.xml
index d072f422559..fd2515f6a9e 100644
--- a/xml/System.ComponentModel.Design/ComponentDesigner.xml
+++ b/xml/System.ComponentModel.Design/ComponentDesigner.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Extends the design mode behavior of a component.</summary>
@@ -534,10 +530,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.InheritanceAttribute</ReturnType>
@@ -663,10 +655,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -717,12 +705,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -824,10 +806,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.InheritanceAttribute</ReturnType>
@@ -925,10 +903,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.IComponent</ReturnType>
@@ -1265,12 +1239,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1320,12 +1288,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1791,10 +1753,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.IDesigner</ReturnType>
diff --git a/xml/System.ComponentModel.Design/ComponentEventArgs.xml b/xml/System.ComponentModel.Design/ComponentEventArgs.xml
index 9a17e66074a..b4b489322e5 100644
--- a/xml/System.ComponentModel.Design/ComponentEventArgs.xml
+++ b/xml/System.ComponentModel.Design/ComponentEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Design/ComponentRenameEventArgs.xml b/xml/System.ComponentModel.Design/ComponentRenameEventArgs.xml
index 9712e72731e..a979c0889c8 100644
--- a/xml/System.ComponentModel.Design/ComponentRenameEventArgs.xml
+++ b/xml/System.ComponentModel.Design/ComponentRenameEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Design/DataSourceDescriptor.xml b/xml/System.ComponentModel.Design/DataSourceDescriptor.xml
index 35d66e3d118..498289537b9 100644
--- a/xml/System.ComponentModel.Design/DataSourceDescriptor.xml
+++ b/xml/System.ComponentModel.Design/DataSourceDescriptor.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.ComponentModel.Design/DataSourceDescriptorCollection.xml b/xml/System.ComponentModel.Design/DataSourceDescriptorCollection.xml
index e60185c1e8b..8bb9b79aca8 100644
--- a/xml/System.ComponentModel.Design/DataSourceDescriptorCollection.xml
+++ b/xml/System.ComponentModel.Design/DataSourceDescriptorCollection.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -189,14 +185,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.DataSourceDescriptor</ReturnType>
diff --git a/xml/System.ComponentModel.Design/DataSourceGroup.xml b/xml/System.ComponentModel.Design/DataSourceGroup.xml
index a7b06d89291..387597be5da 100644
--- a/xml/System.ComponentModel.Design/DataSourceGroup.xml
+++ b/xml/System.ComponentModel.Design/DataSourceGroup.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.ComponentModel.Design/DataSourceGroupCollection.xml b/xml/System.ComponentModel.Design/DataSourceGroupCollection.xml
index 0dba1f1166c..d0b69071763 100644
--- a/xml/System.ComponentModel.Design/DataSourceGroupCollection.xml
+++ b/xml/System.ComponentModel.Design/DataSourceGroupCollection.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -189,14 +185,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.DataSourceGroup</ReturnType>
diff --git a/xml/System.ComponentModel.Design/DataSourceProviderService.xml b/xml/System.ComponentModel.Design/DataSourceProviderService.xml
index 22c801cd5f5..8c3b4e0be92 100644
--- a/xml/System.ComponentModel.Design/DataSourceProviderService.xml
+++ b/xml/System.ComponentModel.Design/DataSourceProviderService.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute>
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("ABE5C1F0-C96E-40c4-A22D-4A5CEC899BDC")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("ABE5C1F0-C96E-40c4-A22D-4A5CEC899BDC")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Design/DateTimeEditor.xml b/xml/System.ComponentModel.Design/DateTimeEditor.xml
index 9226b5aa87a..217b140102a 100644
--- a/xml/System.ComponentModel.Design/DateTimeEditor.xml
+++ b/xml/System.ComponentModel.Design/DateTimeEditor.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This date time editor is a <see cref="T:System.Drawing.Design.UITypeEditor" /> suitable for visually editing <see cref="T:System.DateTime" /> objects.</summary>
diff --git a/xml/System.ComponentModel.Design/DesignSurface.xml b/xml/System.ComponentModel.Design/DesignSurface.xml
index b4aa1862309..e4d9c9abcdd 100644
--- a/xml/System.ComponentModel.Design/DesignSurface.xml
+++ b/xml/System.ComponentModel.Design/DesignSurface.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Presents a user interface for designing components.</summary>
@@ -175,12 +171,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="parentProvider" Type="System.IServiceProvider" />
       </Parameters>
@@ -862,14 +852,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -995,14 +977,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1132,14 +1106,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.LoadedEventHandler</ReturnType>
@@ -1221,14 +1187,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1476,14 +1434,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1522,14 +1472,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1631,14 +1573,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.ComponentModel.Design/DesignSurfaceCollection.xml b/xml/System.ComponentModel.Design/DesignSurfaceCollection.xml
index 74ab2b42449..7538cef90ef 100644
--- a/xml/System.ComponentModel.Design/DesignSurfaceCollection.xml
+++ b/xml/System.ComponentModel.Design/DesignSurfaceCollection.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains a collection of design surfaces. This class cannot be inherited.</summary>
diff --git a/xml/System.ComponentModel.Design/DesignSurfaceEventArgs.xml b/xml/System.ComponentModel.Design/DesignSurfaceEventArgs.xml
index 42627bc1583..d6bd26885d5 100644
--- a/xml/System.ComponentModel.Design/DesignSurfaceEventArgs.xml
+++ b/xml/System.ComponentModel.Design/DesignSurfaceEventArgs.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.ComponentModel.Design.DesignSurfaceManager.DesignSurfaceCreated" /> event.</summary>
diff --git a/xml/System.ComponentModel.Design/DesignSurfaceManager.xml b/xml/System.ComponentModel.Design/DesignSurfaceManager.xml
index 2645efeee73..4dcd8a20147 100644
--- a/xml/System.ComponentModel.Design/DesignSurfaceManager.xml
+++ b/xml/System.ComponentModel.Design/DesignSurfaceManager.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Manages a collection of <see cref="T:System.ComponentModel.Design.DesignSurface" /> objects.</summary>
@@ -248,12 +244,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.DesignSurface</ReturnType>
       </ReturnValue>
@@ -288,12 +278,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.DesignSurface</ReturnType>
       </ReturnValue>
@@ -345,12 +329,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.DesignSurface</ReturnType>
       </ReturnValue>
@@ -462,10 +440,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.DesignSurfaceCollection</ReturnType>
@@ -625,12 +599,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -716,10 +684,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.ServiceContainer</ReturnType>
diff --git a/xml/System.ComponentModel.Design/DesignerActionHeaderItem.xml b/xml/System.ComponentModel.Design/DesignerActionHeaderItem.xml
index c7ce187a8d9..1fb827a2ec0 100644
--- a/xml/System.ComponentModel.Design/DesignerActionHeaderItem.xml
+++ b/xml/System.ComponentModel.Design/DesignerActionHeaderItem.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a static header item on a smart tag panel. This class cannot be inherited.</summary>
diff --git a/xml/System.ComponentModel.Design/DesignerActionItem.xml b/xml/System.ComponentModel.Design/DesignerActionItem.xml
index c3a885c5cb2..43659e91249 100644
--- a/xml/System.ComponentModel.Design/DesignerActionItem.xml
+++ b/xml/System.ComponentModel.Design/DesignerActionItem.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the base class for types that represent a panel item on a smart tag panel.</summary>
@@ -363,10 +359,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IDictionary</ReturnType>
diff --git a/xml/System.ComponentModel.Design/DesignerActionItemCollection.xml b/xml/System.ComponentModel.Design/DesignerActionItemCollection.xml
index 8a010675f9b..b488361a734 100644
--- a/xml/System.ComponentModel.Design/DesignerActionItemCollection.xml
+++ b/xml/System.ComponentModel.Design/DesignerActionItemCollection.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.ComponentModel.Design.DesignerActionItem" /> objects.</summary>
diff --git a/xml/System.ComponentModel.Design/DesignerActionList.xml b/xml/System.ComponentModel.Design/DesignerActionList.xml
index 63e4b7a41d4..bf4bffc4e81 100644
--- a/xml/System.ComponentModel.Design/DesignerActionList.xml
+++ b/xml/System.ComponentModel.Design/DesignerActionList.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the base class for types that define a list of items used to create a smart tag panel.</summary>
@@ -107,10 +103,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="component" Type="System.ComponentModel.IComponent" />
@@ -230,10 +222,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.IComponent</ReturnType>
diff --git a/xml/System.ComponentModel.Design/DesignerActionListCollection.xml b/xml/System.ComponentModel.Design/DesignerActionListCollection.xml
index 557d5c4291e..4c1af6b3295 100644
--- a/xml/System.ComponentModel.Design/DesignerActionListCollection.xml
+++ b/xml/System.ComponentModel.Design/DesignerActionListCollection.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.ComponentModel.Design.DesignerActionList" /> objects.</summary>
@@ -335,12 +331,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -769,12 +759,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design/DesignerActionListsChangedEventArgs.xml b/xml/System.ComponentModel.Design/DesignerActionListsChangedEventArgs.xml
index 48c1495d245..2f177b318d9 100644
--- a/xml/System.ComponentModel.Design/DesignerActionListsChangedEventArgs.xml
+++ b/xml/System.ComponentModel.Design/DesignerActionListsChangedEventArgs.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.ComponentModel.Design.DesignerActionService.DesignerActionListsChanged" /> event.</summary>
diff --git a/xml/System.ComponentModel.Design/DesignerActionPropertyItem.xml b/xml/System.ComponentModel.Design/DesignerActionPropertyItem.xml
index 843b2bec3cd..114bbc4e55f 100644
--- a/xml/System.ComponentModel.Design/DesignerActionPropertyItem.xml
+++ b/xml/System.ComponentModel.Design/DesignerActionPropertyItem.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a panel item that is associated with a property in a class derived from <see cref="T:System.ComponentModel.Design.DesignerActionList" />. This class cannot be inherited.</summary>
@@ -115,10 +111,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="memberName" Type="System.String" />
@@ -314,10 +306,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.ComponentModel.Design/DesignerActionService.xml b/xml/System.ComponentModel.Design/DesignerActionService.xml
index 77f082df6ec..90a3f829191 100644
--- a/xml/System.ComponentModel.Design/DesignerActionService.xml
+++ b/xml/System.ComponentModel.Design/DesignerActionService.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Establishes a design-time service that manages the collection of <see cref="T:System.ComponentModel.Design.DesignerActionItem" /> objects for components.</summary>
@@ -116,12 +112,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="serviceProvider" Type="System.IServiceProvider" />
       </Parameters>
@@ -387,14 +377,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.DesignerActionListsChangedEventHandler</ReturnType>
diff --git a/xml/System.ComponentModel.Design/DesignerActionTextItem.xml b/xml/System.ComponentModel.Design/DesignerActionTextItem.xml
index 4d219fa521d..e257ed7424c 100644
--- a/xml/System.ComponentModel.Design/DesignerActionTextItem.xml
+++ b/xml/System.ComponentModel.Design/DesignerActionTextItem.xml
@@ -81,12 +81,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="displayName" Type="System.String" />
         <Parameter Name="category" Type="System.String" />
diff --git a/xml/System.ComponentModel.Design/DesignerActionUIService.xml b/xml/System.ComponentModel.Design/DesignerActionUIService.xml
index ea43b7d547a..45bd81b71d6 100644
--- a/xml/System.ComponentModel.Design/DesignerActionUIService.xml
+++ b/xml/System.ComponentModel.Design/DesignerActionUIService.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Manages the user interface (UI) for a smart tag panel. This class cannot be inherited.</summary>
@@ -293,12 +289,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design/DesignerActionUIStateChangeEventArgs.xml b/xml/System.ComponentModel.Design/DesignerActionUIStateChangeEventArgs.xml
index 1007e4784df..fb2bf1fb398 100644
--- a/xml/System.ComponentModel.Design/DesignerActionUIStateChangeEventArgs.xml
+++ b/xml/System.ComponentModel.Design/DesignerActionUIStateChangeEventArgs.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.ComponentModel.Design.DesignerActionUIService.DesignerActionUIStateChange" /> event.</summary>
diff --git a/xml/System.ComponentModel.Design/DesignerCollection.xml b/xml/System.ComponentModel.Design/DesignerCollection.xml
index e98a1ea83ec..844d4b4e477 100644
--- a/xml/System.ComponentModel.Design/DesignerCollection.xml
+++ b/xml/System.ComponentModel.Design/DesignerCollection.xml
@@ -110,10 +110,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -268,12 +264,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IEnumerator</ReturnType>
       </ReturnValue>
@@ -321,10 +311,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.IDesignerHost</ReturnType>
diff --git a/xml/System.ComponentModel.Design/DesignerCommandSet.xml b/xml/System.ComponentModel.Design/DesignerCommandSet.xml
index a80ebda1aa0..339d1e045f7 100644
--- a/xml/System.ComponentModel.Design/DesignerCommandSet.xml
+++ b/xml/System.ComponentModel.Design/DesignerCommandSet.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a base class for design-time tools, not derived from <see cref="T:System.ComponentModel.Design.ComponentDesigner" />, that provide smart tag or designer verb capabilities.</summary>
@@ -171,12 +167,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.ICollection</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design/DesignerEventArgs.xml b/xml/System.ComponentModel.Design/DesignerEventArgs.xml
index 4e61b21472e..10f1648e81c 100644
--- a/xml/System.ComponentModel.Design/DesignerEventArgs.xml
+++ b/xml/System.ComponentModel.Design/DesignerEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.ComponentModel.Design.IDesignerEventService.DesignerCreated" /> and <see cref="E:System.ComponentModel.Design.IDesignerEventService.DesignerDisposed" /> events.</summary>
diff --git a/xml/System.ComponentModel.Design/DesignerOptionService+DesignerOptionCollection.xml b/xml/System.ComponentModel.Design/DesignerOptionService+DesignerOptionCollection.xml
index 348ee489715..7de3a9ddf13 100644
--- a/xml/System.ComponentModel.Design/DesignerOptionService+DesignerOptionCollection.xml
+++ b/xml/System.ComponentModel.Design/DesignerOptionService+DesignerOptionCollection.xml
@@ -313,10 +313,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.DesignerOptionService+DesignerOptionCollection</ReturnType>
@@ -476,10 +472,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Design/DesignerOptionService.xml b/xml/System.ComponentModel.Design/DesignerOptionService.xml
index f94658525c1..454e5461e84 100644
--- a/xml/System.ComponentModel.Design/DesignerOptionService.xml
+++ b/xml/System.ComponentModel.Design/DesignerOptionService.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a base class for getting and setting option values for a designer.</summary>
diff --git a/xml/System.ComponentModel.Design/DesignerTransaction.xml b/xml/System.ComponentModel.Design/DesignerTransaction.xml
index 73fbaa2f1a2..e9b9fd2b166 100644
--- a/xml/System.ComponentModel.Design/DesignerTransaction.xml
+++ b/xml/System.ComponentModel.Design/DesignerTransaction.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a way to group a series of design-time actions to improve performance and enable most types of changes to be undone.</summary>
diff --git a/xml/System.ComponentModel.Design/DesignerVerb.xml b/xml/System.ComponentModel.Design/DesignerVerb.xml
index 7aadece4c0b..9c3a14ca918 100644
--- a/xml/System.ComponentModel.Design/DesignerVerb.xml
+++ b/xml/System.ComponentModel.Design/DesignerVerb.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Design/DesignerVerbCollection.xml b/xml/System.ComponentModel.Design/DesignerVerbCollection.xml
index 6095d508769..3beff14147f 100644
--- a/xml/System.ComponentModel.Design/DesignerVerbCollection.xml
+++ b/xml/System.ComponentModel.Design/DesignerVerbCollection.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -173,12 +169,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="value" Type="System.ComponentModel.Design.DesignerVerb[]" />
       </Parameters>
@@ -351,12 +341,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -881,12 +865,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design/DesigntimeLicenseContext.xml b/xml/System.ComponentModel.Design/DesigntimeLicenseContext.xml
index 37e9b1872fc..e6f7ef3e3ec 100644
--- a/xml/System.ComponentModel.Design/DesigntimeLicenseContext.xml
+++ b/xml/System.ComponentModel.Design/DesigntimeLicenseContext.xml
@@ -123,12 +123,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -183,12 +177,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design/DesigntimeLicenseContextSerializer.xml b/xml/System.ComponentModel.Design/DesigntimeLicenseContextSerializer.xml
index 68b96be4650..609e3782075 100644
--- a/xml/System.ComponentModel.Design/DesigntimeLicenseContextSerializer.xml
+++ b/xml/System.ComponentModel.Design/DesigntimeLicenseContextSerializer.xml
@@ -86,12 +86,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design/EventBindingService.xml b/xml/System.ComponentModel.Design/EventBindingService.xml
index 88699512789..b9aca974293 100644
--- a/xml/System.ComponentModel.Design/EventBindingService.xml
+++ b/xml/System.ComponentModel.Design/EventBindingService.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A default implementation of the <see cref="T:System.ComponentModel.Design.IEventBindingService" /> interface.</summary>
diff --git a/xml/System.ComponentModel.Design/ExceptionCollection.xml b/xml/System.ComponentModel.Design/ExceptionCollection.xml
index 36ef7b044cd..a69ade6f041 100644
--- a/xml/System.ComponentModel.Design/ExceptionCollection.xml
+++ b/xml/System.ComponentModel.Design/ExceptionCollection.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the collection of exceptions.</summary>
@@ -153,10 +149,6 @@
           <AttributeName Language="C#">[System.Obsolete(DiagnosticId="SYSLIB0051")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete(DiagnosticId="SYSLIB0051")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.ComponentModel.Design/HelpKeywordAttribute.xml b/xml/System.ComponentModel.Design/HelpKeywordAttribute.xml
index 95a98aa594e..ff48a42e282 100644
--- a/xml/System.ComponentModel.Design/HelpKeywordAttribute.xml
+++ b/xml/System.ComponentModel.Design/HelpKeywordAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -330,12 +326,6 @@ public class DemoComponent : Component
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -440,10 +430,6 @@ public class DemoComponent : Component
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Design/IComponentChangeService.xml b/xml/System.ComponentModel.Design/IComponentChangeService.xml
index ee0953ac344..62983e64882 100644
--- a/xml/System.ComponentModel.Design/IComponentChangeService.xml
+++ b/xml/System.ComponentModel.Design/IComponentChangeService.xml
@@ -38,10 +38,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -463,12 +459,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design/IComponentDiscoveryService.xml b/xml/System.ComponentModel.Design/IComponentDiscoveryService.xml
index 5bf13219aa9..9d8f95bb011 100644
--- a/xml/System.ComponentModel.Design/IComponentDiscoveryService.xml
+++ b/xml/System.ComponentModel.Design/IComponentDiscoveryService.xml
@@ -36,12 +36,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Enables enumeration of components at design time.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel.Design/IComponentInitializer.xml b/xml/System.ComponentModel.Design/IComponentInitializer.xml
index 92dbdcc0edb..4dbada9fb92 100644
--- a/xml/System.ComponentModel.Design/IComponentInitializer.xml
+++ b/xml/System.ComponentModel.Design/IComponentInitializer.xml
@@ -36,12 +36,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides a set of recommended default values during component creation.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel.Design/IDesigner.xml b/xml/System.ComponentModel.Design/IDesigner.xml
index 4ec6c561ac4..a458dac96f2 100644
--- a/xml/System.ComponentModel.Design/IDesigner.xml
+++ b/xml/System.ComponentModel.Design/IDesigner.xml
@@ -42,10 +42,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -257,10 +253,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.DesignerVerbCollection</ReturnType>
diff --git a/xml/System.ComponentModel.Design/IDesignerEventService.xml b/xml/System.ComponentModel.Design/IDesignerEventService.xml
index 19196cf64a0..fc882b9bae2 100644
--- a/xml/System.ComponentModel.Design/IDesignerEventService.xml
+++ b/xml/System.ComponentModel.Design/IDesignerEventService.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides event notifications when root designers are added and removed, when a selected component changes, and when the current root designer changes.</summary>
     <remarks>
@@ -101,10 +95,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.IDesignerHost</ReturnType>
diff --git a/xml/System.ComponentModel.Design/IDesignerFilter.xml b/xml/System.ComponentModel.Design/IDesignerFilter.xml
index 8558041e454..8cfc36a5225 100644
--- a/xml/System.ComponentModel.Design/IDesignerFilter.xml
+++ b/xml/System.ComponentModel.Design/IDesignerFilter.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an interface that enables a designer to access and filter the dictionaries of a <see cref="T:System.ComponentModel.TypeDescriptor" /> that stores the property, attribute, and event descriptors that a component designer can expose to the design-time environment.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel.Design/IDesignerHost.xml b/xml/System.ComponentModel.Design/IDesignerHost.xml
index fda50a1c8d3..1cc86743d69 100644
--- a/xml/System.ComponentModel.Design/IDesignerHost.xml
+++ b/xml/System.ComponentModel.Design/IDesignerHost.xml
@@ -48,10 +48,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Design/IDesignerOptionService.xml b/xml/System.ComponentModel.Design/IDesignerOptionService.xml
index 1478f078fed..d3ad6cacc72 100644
--- a/xml/System.ComponentModel.Design/IDesignerOptionService.xml
+++ b/xml/System.ComponentModel.Design/IDesignerOptionService.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides access to the designer options located on the **Tools** menu under the **Options** command in the Visual Studio development environment.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel.Design/IDictionaryService.xml b/xml/System.ComponentModel.Design/IDictionaryService.xml
index 808b6ecc3ea..c9856196662 100644
--- a/xml/System.ComponentModel.Design/IDictionaryService.xml
+++ b/xml/System.ComponentModel.Design/IDictionaryService.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides a basic, component site-specific, key-value pair dictionary through a service that a designer can use to store user-defined data.</summary>
     <remarks>
@@ -96,12 +90,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design/IEventBindingService.xml b/xml/System.ComponentModel.Design/IEventBindingService.xml
index 554d8008be4..2e156ff531f 100644
--- a/xml/System.ComponentModel.Design/IEventBindingService.xml
+++ b/xml/System.ComponentModel.Design/IEventBindingService.xml
@@ -38,10 +38,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Design/IExtenderListService.xml b/xml/System.ComponentModel.Design/IExtenderListService.xml
index 1e51d7dd21c..4076e727c3d 100644
--- a/xml/System.ComponentModel.Design/IExtenderListService.xml
+++ b/xml/System.ComponentModel.Design/IExtenderListService.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an interface that can list extender providers.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel.Design/IExtenderProviderService.xml b/xml/System.ComponentModel.Design/IExtenderProviderService.xml
index b3fccedb152..1393eefbaa0 100644
--- a/xml/System.ComponentModel.Design/IExtenderProviderService.xml
+++ b/xml/System.ComponentModel.Design/IExtenderProviderService.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an interface for adding and removing extender providers at design time.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel.Design/IHelpService.xml b/xml/System.ComponentModel.Design/IHelpService.xml
index bc47be812e9..c1ac46a2300 100644
--- a/xml/System.ComponentModel.Design/IHelpService.xml
+++ b/xml/System.ComponentModel.Design/IHelpService.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides methods for showing Help topics and adding and removing Help keywords at design time.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel.Design/IInheritanceService.xml b/xml/System.ComponentModel.Design/IInheritanceService.xml
index a56b2987397..b79fa53fc1e 100644
--- a/xml/System.ComponentModel.Design/IInheritanceService.xml
+++ b/xml/System.ComponentModel.Design/IInheritanceService.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides methods for identifying the components of a component.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel.Design/IMenuCommandService.xml b/xml/System.ComponentModel.Design/IMenuCommandService.xml
index 34f1402b0aa..ae7cc6672ae 100644
--- a/xml/System.ComponentModel.Design/IMenuCommandService.xml
+++ b/xml/System.ComponentModel.Design/IMenuCommandService.xml
@@ -38,10 +38,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Design/IMultitargetHelperService.xml b/xml/System.ComponentModel.Design/IMultitargetHelperService.xml
index 77401651144..6d018dc32df 100644
--- a/xml/System.ComponentModel.Design/IMultitargetHelperService.xml
+++ b/xml/System.ComponentModel.Design/IMultitargetHelperService.xml
@@ -28,12 +28,6 @@
     <TypeForwarding From="System.Design" FromVersion="9.0.0.0" To="System.Windows.Forms.Design" ToVersion="9.0.0.0" FrameworkAlternate="windowsdesktop-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Defines multi-target type name resolution services in a design-time environment.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.ComponentModel.Design/IReferenceService.xml b/xml/System.ComponentModel.Design/IReferenceService.xml
index b2634becb78..08b517da722 100644
--- a/xml/System.ComponentModel.Design/IReferenceService.xml
+++ b/xml/System.ComponentModel.Design/IReferenceService.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an interface for obtaining references to objects within a project by name or type, obtaining the name of a specified object, and for locating the parent of a specified object within a designer project.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel.Design/IResourceService.xml b/xml/System.ComponentModel.Design/IResourceService.xml
index 0df1e3f56f5..8f3b7da0f05 100644
--- a/xml/System.ComponentModel.Design/IResourceService.xml
+++ b/xml/System.ComponentModel.Design/IResourceService.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an interface for designers to access resource readers and writers for specific <see cref="T:System.Globalization.CultureInfo" /> resource types.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel.Design/IRootDesigner.xml b/xml/System.ComponentModel.Design/IRootDesigner.xml
index 5fd1aa8e4ca..e355f96d50a 100644
--- a/xml/System.ComponentModel.Design/IRootDesigner.xml
+++ b/xml/System.ComponentModel.Design/IRootDesigner.xml
@@ -48,10 +48,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Design/ISelectionService.xml b/xml/System.ComponentModel.Design/ISelectionService.xml
index cb69b9c7de2..7d3f053a8df 100644
--- a/xml/System.ComponentModel.Design/ISelectionService.xml
+++ b/xml/System.ComponentModel.Design/ISelectionService.xml
@@ -38,10 +38,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -198,10 +194,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -421,12 +413,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -478,12 +464,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design/IServiceContainer.xml b/xml/System.ComponentModel.Design/IServiceContainer.xml
index cbd9e1ce479..d4d982a4a57 100644
--- a/xml/System.ComponentModel.Design/IServiceContainer.xml
+++ b/xml/System.ComponentModel.Design/IServiceContainer.xml
@@ -42,10 +42,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Design/ITreeDesigner.xml b/xml/System.ComponentModel.Design/ITreeDesigner.xml
index 9be0232666e..186797bfbe8 100644
--- a/xml/System.ComponentModel.Design/ITreeDesigner.xml
+++ b/xml/System.ComponentModel.Design/ITreeDesigner.xml
@@ -102,10 +102,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.ICollection</ReturnType>
@@ -160,10 +156,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.IDesigner</ReturnType>
diff --git a/xml/System.ComponentModel.Design/ITypeDescriptorFilterService.xml b/xml/System.ComponentModel.Design/ITypeDescriptorFilterService.xml
index ae069c285c9..c3e6903903f 100644
--- a/xml/System.ComponentModel.Design/ITypeDescriptorFilterService.xml
+++ b/xml/System.ComponentModel.Design/ITypeDescriptorFilterService.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an interface to modify the set of member descriptors for a component in design mode.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel.Design/ITypeDiscoveryService.xml b/xml/System.ComponentModel.Design/ITypeDiscoveryService.xml
index e884641053b..a66c963ab6b 100644
--- a/xml/System.ComponentModel.Design/ITypeDiscoveryService.xml
+++ b/xml/System.ComponentModel.Design/ITypeDiscoveryService.xml
@@ -36,12 +36,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Discovers available types at design time.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel.Design/ITypeResolutionService.xml b/xml/System.ComponentModel.Design/ITypeResolutionService.xml
index 2bc80b9a86c..833c0a2149e 100644
--- a/xml/System.ComponentModel.Design/ITypeResolutionService.xml
+++ b/xml/System.ComponentModel.Design/ITypeResolutionService.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an interface to retrieve an assembly or type by name.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel.Design/InheritanceService.xml b/xml/System.ComponentModel.Design/InheritanceService.xml
index b1837da654b..8f418307082 100644
--- a/xml/System.ComponentModel.Design/InheritanceService.xml
+++ b/xml/System.ComponentModel.Design/InheritanceService.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of methods for identifying inherited components.</summary>
diff --git a/xml/System.ComponentModel.Design/LoadedEventArgs.xml b/xml/System.ComponentModel.Design/LoadedEventArgs.xml
index 3dbebbce4fb..992936f33f0 100644
--- a/xml/System.ComponentModel.Design/LoadedEventArgs.xml
+++ b/xml/System.ComponentModel.Design/LoadedEventArgs.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.ComponentModel.Design.DesignSurface.Loaded" /> event. This class cannot be inherited.</summary>
@@ -69,12 +65,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="succeeded" Type="System.Boolean" />
         <Parameter Name="errors" Type="System.Collections.ICollection" />
diff --git a/xml/System.ComponentModel.Design/MenuCommand.xml b/xml/System.ComponentModel.Design/MenuCommand.xml
index be422d4a615..5a01432152b 100644
--- a/xml/System.ComponentModel.Design/MenuCommand.xml
+++ b/xml/System.ComponentModel.Design/MenuCommand.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -433,10 +429,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -534,12 +526,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -599,10 +585,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IDictionary</ReturnType>
@@ -709,12 +691,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design/MenuCommandService.xml b/xml/System.ComponentModel.Design/MenuCommandService.xml
index 17b31dfe47f..c64289b8f02 100644
--- a/xml/System.ComponentModel.Design/MenuCommandService.xml
+++ b/xml/System.ComponentModel.Design/MenuCommandService.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Implements the <see cref="T:System.ComponentModel.Design.IMenuCommandService" /> interface.</summary>
@@ -95,12 +91,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="serviceProvider" Type="System.IServiceProvider" />
       </Parameters>
@@ -445,12 +435,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.MenuCommand</ReturnType>
       </ReturnValue>
@@ -492,12 +476,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.ICollection</ReturnType>
       </ReturnValue>
@@ -689,14 +667,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.MenuCommandsChangedEventHandler</ReturnType>
diff --git a/xml/System.ComponentModel.Design/MenuCommandsChangedEventArgs.xml b/xml/System.ComponentModel.Design/MenuCommandsChangedEventArgs.xml
index 42daeaee0df..f7ad8cb7faa 100644
--- a/xml/System.ComponentModel.Design/MenuCommandsChangedEventArgs.xml
+++ b/xml/System.ComponentModel.Design/MenuCommandsChangedEventArgs.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.ComponentModel.Design.MenuCommandService.MenuCommandsChanged" /> event.</summary>
diff --git a/xml/System.ComponentModel.Design/MultilineStringEditor.xml b/xml/System.ComponentModel.Design/MultilineStringEditor.xml
index 9082d746b86..40327472adf 100644
--- a/xml/System.ComponentModel.Design/MultilineStringEditor.xml
+++ b/xml/System.ComponentModel.Design/MultilineStringEditor.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Displays a dialog for editing multi-line strings in design mode.</summary>
diff --git a/xml/System.ComponentModel.Design/ObjectSelectorEditor+Selector.xml b/xml/System.ComponentModel.Design/ObjectSelectorEditor+Selector.xml
index cf7ff91f996..020fedc4440 100644
--- a/xml/System.ComponentModel.Design/ObjectSelectorEditor+Selector.xml
+++ b/xml/System.ComponentModel.Design/ObjectSelectorEditor+Selector.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Displays a hierarchical collection of labeled items, each represented by a <see cref="T:System.Windows.Forms.TreeNode" />.</summary>
@@ -117,12 +113,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.ObjectSelectorEditor+SelectorNode</ReturnType>
       </ReturnValue>
@@ -397,12 +387,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design/ObjectSelectorEditor.xml b/xml/System.ComponentModel.Design/ObjectSelectorEditor.xml
index 05dbdcf764a..a4bd39e4ce2 100644
--- a/xml/System.ComponentModel.Design/ObjectSelectorEditor.xml
+++ b/xml/System.ComponentModel.Design/ObjectSelectorEditor.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Implements the basic functionality that can be used to design value editors. These editors can, in turn, provide a user interface for representing and editing the values of objects of the supported data types.</summary>
@@ -165,12 +161,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Design</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -350,12 +340,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel.Design/ProjectTargetFrameworkAttribute.xml b/xml/System.ComponentModel.Design/ProjectTargetFrameworkAttribute.xml
index b51b7d7809d..11cc796a5f0 100644
--- a/xml/System.ComponentModel.Design/ProjectTargetFrameworkAttribute.xml
+++ b/xml/System.ComponentModel.Design/ProjectTargetFrameworkAttribute.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the target framework for a project.</summary>
diff --git a/xml/System.ComponentModel.Design/ServiceContainer.xml b/xml/System.ComponentModel.Design/ServiceContainer.xml
index 9272f75c25e..8c6f61f6229 100644
--- a/xml/System.ComponentModel.Design/ServiceContainer.xml
+++ b/xml/System.ComponentModel.Design/ServiceContainer.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a simple implementation of the <see cref="T:System.ComponentModel.Design.IServiceContainer" /> interface. This class cannot be inherited.</summary>
@@ -181,10 +177,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel.Design/StandardCommands.xml b/xml/System.ComponentModel.Design/StandardCommands.xml
index 050640cf9f5..ba09cde4a9d 100644
--- a/xml/System.ComponentModel.Design/StandardCommands.xml
+++ b/xml/System.ComponentModel.Design/StandardCommands.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines identifiers for the standard set of commands that are available to most applications.</summary>
diff --git a/xml/System.ComponentModel.Design/TypeDescriptionProviderService.xml b/xml/System.ComponentModel.Design/TypeDescriptionProviderService.xml
index a8114f1e8a4..d502c2897f5 100644
--- a/xml/System.ComponentModel.Design/TypeDescriptionProviderService.xml
+++ b/xml/System.ComponentModel.Design/TypeDescriptionProviderService.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type description provider for a specified type.</summary>
diff --git a/xml/System.ComponentModel.Design/UndoEngine.xml b/xml/System.ComponentModel.Design/UndoEngine.xml
index 6cf6110ae88..124cac5216f 100644
--- a/xml/System.ComponentModel.Design/UndoEngine.xml
+++ b/xml/System.ComponentModel.Design/UndoEngine.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies generic undo/redo functionality at design time.</summary>
@@ -570,14 +566,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -647,14 +635,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.ComponentModel/AddingNewEventArgs.xml b/xml/System.ComponentModel/AddingNewEventArgs.xml
index 8ca7c210f77..7dcc51f9b78 100644
--- a/xml/System.ComponentModel/AddingNewEventArgs.xml
+++ b/xml/System.ComponentModel/AddingNewEventArgs.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.BindingSource.AddingNew" /> event.</summary>
diff --git a/xml/System.ComponentModel/AmbientValueAttribute.xml b/xml/System.ComponentModel/AmbientValueAttribute.xml
index 26efbe8c144..00f27174d8f 100644
--- a/xml/System.ComponentModel/AmbientValueAttribute.xml
+++ b/xml/System.ComponentModel/AmbientValueAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the value to pass to a property to cause the property to get its value from another source. This is known as *ambience*. This class cannot be inherited.</summary>
@@ -535,10 +531,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Generic TypeConverters may require the generic types to be annotated. For example, NullableConverter requires the underlying type to be DynamicallyAccessedMembers All.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Generic TypeConverters may require the generic types to be annotated. For example, NullableConverter requires the underlying type to be DynamicallyAccessedMembers All.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="type" Type="System.Type">
diff --git a/xml/System.ComponentModel/ArrayConverter.xml b/xml/System.ComponentModel/ArrayConverter.xml
index d33cc98492f..bc0b7b75f8c 100644
--- a/xml/System.ComponentModel/ArrayConverter.xml
+++ b/xml/System.ComponentModel/ArrayConverter.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.Array" /> objects to and from various other representations.</summary>
diff --git a/xml/System.ComponentModel/AsyncCompletedEventArgs.xml b/xml/System.ComponentModel/AsyncCompletedEventArgs.xml
index 2ed32c1eb35..2a6d3a0d728 100644
--- a/xml/System.ComponentModel/AsyncCompletedEventArgs.xml
+++ b/xml/System.ComponentModel/AsyncCompletedEventArgs.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the *MethodName*<see langword="Completed" /> event.</summary>
diff --git a/xml/System.ComponentModel/AsyncOperation.xml b/xml/System.ComponentModel/AsyncOperation.xml
index e4b3522e89c..623e352d62b 100644
--- a/xml/System.ComponentModel/AsyncOperation.xml
+++ b/xml/System.ComponentModel/AsyncOperation.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Tracks the lifetime of an asynchronous operation.</summary>
@@ -428,10 +424,6 @@ Note: Console applications do not synchronize the execution of <see cref="M:Syst
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel/AsyncOperationManager.xml b/xml/System.ComponentModel/AsyncOperationManager.xml
index 57c96f17229..41209dcbed2 100644
--- a/xml/System.ComponentModel/AsyncOperationManager.xml
+++ b/xml/System.ComponentModel/AsyncOperationManager.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides concurrency management for classes that support asynchronous method calls. This class cannot be inherited.</summary>
diff --git a/xml/System.ComponentModel/AttributeCollection.xml b/xml/System.ComponentModel/AttributeCollection.xml
index d243f4b9177..8612f4d0142 100644
--- a/xml/System.ComponentModel/AttributeCollection.xml
+++ b/xml/System.ComponentModel/AttributeCollection.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -312,10 +308,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -954,12 +946,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/AttributeProviderAttribute.xml b/xml/System.ComponentModel/AttributeProviderAttribute.xml
index 73194b4c2b2..ee450fb0d58 100644
--- a/xml/System.ComponentModel/AttributeProviderAttribute.xml
+++ b/xml/System.ComponentModel/AttributeProviderAttribute.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Enables attribute redirection. This class cannot be inherited.</summary>
@@ -127,12 +123,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="typeName" Type="System.String">
           <Attributes>
@@ -184,12 +174,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="type" Type="System.Type">
           <Attributes>
@@ -251,12 +235,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="typeName" Type="System.String">
           <Attributes>
diff --git a/xml/System.ComponentModel/BackgroundWorker.xml b/xml/System.ComponentModel/BackgroundWorker.xml
index d57e96a9955..d77aa4455cf 100644
--- a/xml/System.ComponentModel/BackgroundWorker.xml
+++ b/xml/System.ComponentModel/BackgroundWorker.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">
       <AttributeName Language="C#">[System.ComponentModel.DefaultEvent("DoWork")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.DefaultEvent("DoWork")&gt;]</AttributeName>
@@ -535,12 +531,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -584,12 +574,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -656,12 +640,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/BaseNumberConverter.xml b/xml/System.ComponentModel/BaseNumberConverter.xml
index 44f366a9694..cfdac5e4332 100644
--- a/xml/System.ComponentModel/BaseNumberConverter.xml
+++ b/xml/System.ComponentModel/BaseNumberConverter.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a base type converter for nonfloating-point numerical types.</summary>
@@ -129,12 +125,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/BindableAttribute.xml b/xml/System.ComponentModel/BindableAttribute.xml
index 476343594ca..ce37579010b 100644
--- a/xml/System.ComponentModel/BindableAttribute.xml
+++ b/xml/System.ComponentModel/BindableAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies whether a member is typically used for binding. This class cannot be inherited.</summary>
@@ -528,12 +524,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/BindingList`1.xml b/xml/System.ComponentModel/BindingList`1.xml
index f860cade838..f76e44e24ca 100644
--- a/xml/System.ComponentModel/BindingList`1.xml
+++ b/xml/System.ComponentModel/BindingList`1.xml
@@ -81,10 +81,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -429,12 +425,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -1643,10 +1633,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptor</ReturnType>
diff --git a/xml/System.ComponentModel/BooleanConverter.xml b/xml/System.ComponentModel/BooleanConverter.xml
index 8a7badc6e4c..06f52862201 100644
--- a/xml/System.ComponentModel/BooleanConverter.xml
+++ b/xml/System.ComponentModel/BooleanConverter.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.Boolean" /> objects to and from various other representations.</summary>
@@ -153,12 +149,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -295,12 +285,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.TypeConverter+StandardValuesCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/BrowsableAttribute.xml b/xml/System.ComponentModel/BrowsableAttribute.xml
index 3184c4c23b0..8b21fbe8a53 100644
--- a/xml/System.ComponentModel/BrowsableAttribute.xml
+++ b/xml/System.ComponentModel/BrowsableAttribute.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies whether a property or event should be displayed in a Properties window.</summary>
@@ -314,12 +310,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/CategoryAttribute.xml b/xml/System.ComponentModel/CategoryAttribute.xml
index 4be7cd052d1..c5aa057db25 100644
--- a/xml/System.ComponentModel/CategoryAttribute.xml
+++ b/xml/System.ComponentModel/CategoryAttribute.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the name of the category in which to group the property or event when displayed in a <see cref="T:System.Windows.Forms.PropertyGrid" /> control set to Categorized mode.</summary>
@@ -638,12 +634,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/CharConverter.xml b/xml/System.ComponentModel/CharConverter.xml
index 0947c2723a1..8569e6cdf5c 100644
--- a/xml/System.ComponentModel/CharConverter.xml
+++ b/xml/System.ComponentModel/CharConverter.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert Unicode character objects to and from various other representations.</summary>
@@ -153,12 +149,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/CollectionChangeEventArgs.xml b/xml/System.ComponentModel/CollectionChangeEventArgs.xml
index c2696a27d6e..f4c1fefc8ea 100644
--- a/xml/System.ComponentModel/CollectionChangeEventArgs.xml
+++ b/xml/System.ComponentModel/CollectionChangeEventArgs.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Data.DataColumnCollection.CollectionChanged" /> event.</summary>
diff --git a/xml/System.ComponentModel/CollectionConverter.xml b/xml/System.ComponentModel/CollectionConverter.xml
index 6c36a9b748f..7a0f823298c 100644
--- a/xml/System.ComponentModel/CollectionConverter.xml
+++ b/xml/System.ComponentModel/CollectionConverter.xml
@@ -134,12 +134,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -217,10 +211,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
diff --git a/xml/System.ComponentModel/ComplexBindingPropertiesAttribute.xml b/xml/System.ComponentModel/ComplexBindingPropertiesAttribute.xml
index f55cd8504bd..fb56282effa 100644
--- a/xml/System.ComponentModel/ComplexBindingPropertiesAttribute.xml
+++ b/xml/System.ComponentModel/ComplexBindingPropertiesAttribute.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the data source and data member properties for a component that supports complex data binding. This class cannot be inherited.</summary>
diff --git a/xml/System.ComponentModel/Component.xml b/xml/System.ComponentModel/Component.xml
index 216eb8297e4..fb7704682ef 100644
--- a/xml/System.ComponentModel/Component.xml
+++ b/xml/System.ComponentModel/Component.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDispatch)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDispatch)&gt;]</AttributeName>
@@ -565,10 +561,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.EventHandlerList</ReturnType>
@@ -674,12 +666,6 @@
       <AssemblyInfo>
         <AssemblyName>System.ComponentModel.TypeConverter</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -817,12 +803,6 @@
       <AssemblyInfo>
         <AssemblyName>System.ComponentModel.TypeConverter</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/ComponentCollection.xml b/xml/System.ComponentModel/ComponentCollection.xml
index 5bb3bf14509..cc4f44e4b43 100644
--- a/xml/System.ComponentModel/ComponentCollection.xml
+++ b/xml/System.ComponentModel/ComponentCollection.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -114,12 +110,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="components" Type="System.ComponentModel.IComponent[]" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1" />
       </Parameters>
@@ -175,12 +165,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/ComponentConverter.xml b/xml/System.ComponentModel/ComponentConverter.xml
index 6c4ceb66e4f..7a0c7a7b304 100644
--- a/xml/System.ComponentModel/ComponentConverter.xml
+++ b/xml/System.ComponentModel/ComponentConverter.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert components to and from various other representations.</summary>
@@ -232,12 +228,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/ComponentEditor.xml b/xml/System.ComponentModel/ComponentEditor.xml
index d935c707188..ba03f6b85a8 100644
--- a/xml/System.ComponentModel/ComponentEditor.xml
+++ b/xml/System.ComponentModel/ComponentEditor.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the base class for a custom component editor.</summary>
diff --git a/xml/System.ComponentModel/ComponentResourceManager.xml b/xml/System.ComponentModel/ComponentResourceManager.xml
index 873fc47632e..a2c393a6c26 100644
--- a/xml/System.ComponentModel/ComponentResourceManager.xml
+++ b/xml/System.ComponentModel/ComponentResourceManager.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides simple functionality for enumerating resources for a component or object. The <see cref="T:System.ComponentModel.ComponentResourceManager" /> class is a <see cref="T:System.Resources.ResourceManager" />.</summary>
diff --git a/xml/System.ComponentModel/Container.xml b/xml/System.ComponentModel/Container.xml
index ba25bd3b259..1b04cd4f9b0 100644
--- a/xml/System.ComponentModel/Container.xml
+++ b/xml/System.ComponentModel/Container.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates zero or more components.</summary>
@@ -160,10 +156,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -233,10 +225,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of components in the container cannot be statically discovered to validate the name.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of components in the container cannot be statically discovered to validate the name.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -645,10 +633,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -706,10 +690,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel/ContainerFilterService.xml b/xml/System.ComponentModel/ContainerFilterService.xml
index 9abfd312896..6383c370657 100644
--- a/xml/System.ComponentModel/ContainerFilterService.xml
+++ b/xml/System.ComponentModel/ContainerFilterService.xml
@@ -121,12 +121,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.ComponentCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/CultureInfoConverter.xml b/xml/System.ComponentModel/CultureInfoConverter.xml
index ee39f93e4f1..037d70ef24f 100644
--- a/xml/System.ComponentModel/CultureInfoConverter.xml
+++ b/xml/System.ComponentModel/CultureInfoConverter.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.Globalization.CultureInfo" /> objects to and from various other representations.</summary>
@@ -149,12 +145,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -422,12 +412,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -473,12 +457,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.TypeConverter+StandardValuesCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/CustomTypeDescriptor.xml b/xml/System.ComponentModel/CustomTypeDescriptor.xml
index 0c22862f2c7..ecec1d6f20e 100644
--- a/xml/System.ComponentModel/CustomTypeDescriptor.xml
+++ b/xml/System.ComponentModel/CustomTypeDescriptor.xml
@@ -49,14 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-    <Attribute FrameworkAlternate="net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a simple default implementation of the <see cref="T:System.ComponentModel.ICustomTypeDescriptor" /> interface.</summary>
@@ -168,10 +160,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -237,12 +225,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.AttributeCollection</ReturnType>
       </ReturnValue>
@@ -300,12 +282,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -364,12 +340,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -429,10 +399,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Generic TypeConverters may require the generic types to be annotated. For example, NullableConverter requires the underlying type to be DynamicallyAccessedMembers All.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Generic TypeConverters may require the generic types to be annotated. For example, NullableConverter requires the underlying type to be DynamicallyAccessedMembers All.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.TypeConverter</ReturnType>
@@ -475,12 +441,6 @@
       <AssemblyInfo>
         <AssemblyName>System</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.TypeConverter</ReturnType>
       </ReturnValue>
@@ -534,10 +494,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The built-in EventDescriptor implementation uses Reflection which requires unreferenced code.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The built-in EventDescriptor implementation uses Reflection which requires unreferenced code.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.EventDescriptor</ReturnType>
@@ -599,10 +555,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("PropertyDescriptor's PropertyType cannot be statically discovered.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("PropertyDescriptor's PropertyType cannot be statically discovered.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptor</ReturnType>
@@ -664,10 +616,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Editors registered in TypeDescriptor.AddEditorTable may be trimmed.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Editors registered in TypeDescriptor.AddEditorTable may be trimmed.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="net-9.0">
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Design-time attributes are not preserved when trimming. Types referenced by attributes like EditorAttribute and DesignerAttribute may not be available after trimming.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Design-time attributes are not preserved when trimming. Types referenced by attributes like EditorAttribute and DesignerAttribute may not be available after trimming.")&gt;]</AttributeName>
@@ -746,12 +694,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.EventDescriptorCollection</ReturnType>
       </ReturnValue>
@@ -813,10 +755,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.EventDescriptorCollection</ReturnType>
@@ -941,10 +879,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("PropertyDescriptor's PropertyType cannot be statically discovered.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("PropertyDescriptor's PropertyType cannot be statically discovered.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
@@ -1008,10 +942,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("PropertyDescriptor's PropertyType cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("PropertyDescriptor's PropertyType cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
@@ -1117,12 +1047,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/DataErrorsChangedEventArgs.xml b/xml/System.ComponentModel/DataErrorsChangedEventArgs.xml
index 7cd28774e44..69de3df9a4f 100644
--- a/xml/System.ComponentModel/DataErrorsChangedEventArgs.xml
+++ b/xml/System.ComponentModel/DataErrorsChangedEventArgs.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.ComponentModel.INotifyDataErrorInfo.ErrorsChanged" /> event.</summary>
diff --git a/xml/System.ComponentModel/DataObjectAttribute.xml b/xml/System.ComponentModel/DataObjectAttribute.xml
index 5ea6daeed5c..c6b8c85e1c0 100644
--- a/xml/System.ComponentModel/DataObjectAttribute.xml
+++ b/xml/System.ComponentModel/DataObjectAttribute.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Identifies a type as an object suitable for binding to an <see cref="T:System.Web.UI.WebControls.ObjectDataSource" /> object. This class cannot be inherited.</summary>
@@ -316,12 +312,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/DataObjectFieldAttribute.xml b/xml/System.ComponentModel/DataObjectFieldAttribute.xml
index 44b7228ca3c..0dddcdbd085 100644
--- a/xml/System.ComponentModel/DataObjectFieldAttribute.xml
+++ b/xml/System.ComponentModel/DataObjectFieldAttribute.xml
@@ -320,12 +320,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/DataObjectMethodAttribute.xml b/xml/System.ComponentModel/DataObjectMethodAttribute.xml
index 674fba8224e..aa795037d96 100644
--- a/xml/System.ComponentModel/DataObjectMethodAttribute.xml
+++ b/xml/System.ComponentModel/DataObjectMethodAttribute.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Identifies a data operation method exposed by a type, what type of operation the method performs, and whether the method is the default data method. This class cannot be inherited.</summary>
diff --git a/xml/System.ComponentModel/DateOnlyConverter.xml b/xml/System.ComponentModel/DateOnlyConverter.xml
index 7e67b8ccfe0..9cafb6ff5b6 100644
--- a/xml/System.ComponentModel/DateOnlyConverter.xml
+++ b/xml/System.ComponentModel/DateOnlyConverter.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.DateOnly" /> objects to and from various other representations.</summary>
@@ -63,12 +59,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/DateTimeConverter.xml b/xml/System.ComponentModel/DateTimeConverter.xml
index 6e03409b90e..4a8b3573347 100644
--- a/xml/System.ComponentModel/DateTimeConverter.xml
+++ b/xml/System.ComponentModel/DateTimeConverter.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.DateTime" /> objects to and from various other representations.</summary>
@@ -157,12 +153,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/DateTimeOffsetConverter.xml b/xml/System.ComponentModel/DateTimeOffsetConverter.xml
index a679d027c3d..082bafe43b1 100644
--- a/xml/System.ComponentModel/DateTimeOffsetConverter.xml
+++ b/xml/System.ComponentModel/DateTimeOffsetConverter.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.DateTimeOffset" /> structures to and from various other representations.</summary>
@@ -129,12 +125,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/DecimalConverter.xml b/xml/System.ComponentModel/DecimalConverter.xml
index d3a2d8f0f40..a49ed6a5277 100644
--- a/xml/System.ComponentModel/DecimalConverter.xml
+++ b/xml/System.ComponentModel/DecimalConverter.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.Decimal" /> objects to and from various other representations.</summary>
diff --git a/xml/System.ComponentModel/DefaultBindingPropertyAttribute.xml b/xml/System.ComponentModel/DefaultBindingPropertyAttribute.xml
index b51888044e3..181c15308e4 100644
--- a/xml/System.ComponentModel/DefaultBindingPropertyAttribute.xml
+++ b/xml/System.ComponentModel/DefaultBindingPropertyAttribute.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the default binding property for a component. This class cannot be inherited.</summary>
diff --git a/xml/System.ComponentModel/DefaultEventAttribute.xml b/xml/System.ComponentModel/DefaultEventAttribute.xml
index 012923b275d..d6d6fba4737 100644
--- a/xml/System.ComponentModel/DefaultEventAttribute.xml
+++ b/xml/System.ComponentModel/DefaultEventAttribute.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the default event for a component.</summary>
diff --git a/xml/System.ComponentModel/DefaultPropertyAttribute.xml b/xml/System.ComponentModel/DefaultPropertyAttribute.xml
index 4c86fcef1c8..7dfa41971e9 100644
--- a/xml/System.ComponentModel/DefaultPropertyAttribute.xml
+++ b/xml/System.ComponentModel/DefaultPropertyAttribute.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the default property for a component.</summary>
diff --git a/xml/System.ComponentModel/DefaultValueAttribute.xml b/xml/System.ComponentModel/DefaultValueAttribute.xml
index e9f2f51b763..8e5751bc3db 100644
--- a/xml/System.ComponentModel/DefaultValueAttribute.xml
+++ b/xml/System.ComponentModel/DefaultValueAttribute.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the default value for a property.</summary>
@@ -771,10 +767,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Generic TypeConverters may require the generic types to be annotated. For example, NullableConverter requires the underlying type to be DynamicallyAccessedMembers All.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Generic TypeConverters may require the generic types to be annotated. For example, NullableConverter requires the underlying type to be DynamicallyAccessedMembers All.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="type" Type="System.Type">
diff --git a/xml/System.ComponentModel/DescriptionAttribute.xml b/xml/System.ComponentModel/DescriptionAttribute.xml
index de3623615d5..908855ea019 100644
--- a/xml/System.ComponentModel/DescriptionAttribute.xml
+++ b/xml/System.ComponentModel/DescriptionAttribute.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies a description for a property or event.</summary>
@@ -363,12 +359,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/DesignOnlyAttribute.xml b/xml/System.ComponentModel/DesignOnlyAttribute.xml
index bc6b886c16e..555c25a0e27 100644
--- a/xml/System.ComponentModel/DesignOnlyAttribute.xml
+++ b/xml/System.ComponentModel/DesignOnlyAttribute.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies whether a property can only be set at design time.</summary>
@@ -212,12 +208,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/DesignTimeVisibleAttribute.xml b/xml/System.ComponentModel/DesignTimeVisibleAttribute.xml
index 3fcb90a5a08..b96665cc283 100644
--- a/xml/System.ComponentModel/DesignTimeVisibleAttribute.xml
+++ b/xml/System.ComponentModel/DesignTimeVisibleAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -237,12 +233,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/DesignerAttribute.xml b/xml/System.ComponentModel/DesignerAttribute.xml
index 31061b0daed..89abc2b7403 100644
--- a/xml/System.ComponentModel/DesignerAttribute.xml
+++ b/xml/System.ComponentModel/DesignerAttribute.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the class used to implement design-time services for a component.</summary>
@@ -571,12 +567,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/DesignerCategoryAttribute.xml b/xml/System.ComponentModel/DesignerCategoryAttribute.xml
index 442bd4d00d8..6ae8db9d9e4 100644
--- a/xml/System.ComponentModel/DesignerCategoryAttribute.xml
+++ b/xml/System.ComponentModel/DesignerCategoryAttribute.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that the designer for a class belongs to a certain category.</summary>
@@ -357,12 +353,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/DesignerSerializationVisibilityAttribute.xml b/xml/System.ComponentModel/DesignerSerializationVisibilityAttribute.xml
index d510e91b0d3..a3bde4a025e 100644
--- a/xml/System.ComponentModel/DesignerSerializationVisibilityAttribute.xml
+++ b/xml/System.ComponentModel/DesignerSerializationVisibilityAttribute.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Method | System.AttributeTargets.Property)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Method | System.AttributeTargets.Property)&gt;]</AttributeName>
@@ -285,12 +281,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/DisplayNameAttribute.xml b/xml/System.ComponentModel/DisplayNameAttribute.xml
index 67b585f4e7e..2eb6d0b8bf6 100644
--- a/xml/System.ComponentModel/DisplayNameAttribute.xml
+++ b/xml/System.ComponentModel/DisplayNameAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the display name for a property, event, or public void method which takes no arguments.</summary>
@@ -333,12 +329,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/DoWorkEventArgs.xml b/xml/System.ComponentModel/DoWorkEventArgs.xml
index c7521f0306f..db942113f87 100644
--- a/xml/System.ComponentModel/DoWorkEventArgs.xml
+++ b/xml/System.ComponentModel/DoWorkEventArgs.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.ComponentModel.BackgroundWorker.DoWork" /> event handler.</summary>
diff --git a/xml/System.ComponentModel/EditorAttribute.xml b/xml/System.ComponentModel/EditorAttribute.xml
index f906fbf7d76..c7ffd0bdc6f 100644
--- a/xml/System.ComponentModel/EditorAttribute.xml
+++ b/xml/System.ComponentModel/EditorAttribute.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the editor to use to change a property. This class cannot be inherited.</summary>
@@ -406,10 +402,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -521,12 +513,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/EditorBrowsableAttribute.xml b/xml/System.ComponentModel/EditorBrowsableAttribute.xml
index 2b12ceb09c0..c7f2e1c429b 100644
--- a/xml/System.ComponentModel/EditorBrowsableAttribute.xml
+++ b/xml/System.ComponentModel/EditorBrowsableAttribute.xml
@@ -230,12 +230,6 @@ Build `Class1` in its own assembly. Then, in Visual Studio, create a new project
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/EnumConverter.xml b/xml/System.ComponentModel/EnumConverter.xml
index 26ef5073575..c5632aa61fb 100644
--- a/xml/System.ComponentModel/EnumConverter.xml
+++ b/xml/System.ComponentModel/EnumConverter.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.Enum" /> objects to and from various other representations.</summary>
@@ -115,10 +111,6 @@ Windows=1, Exchange=2, BizTalk=3
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -175,12 +167,6 @@ Windows=1, Exchange=2, BizTalk=3
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -318,10 +304,6 @@ Windows=1, Exchange=2, BizTalk=3
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -533,10 +515,6 @@ Windows=1, Exchange=2, BizTalk=3
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -584,12 +562,6 @@ Windows=1, Exchange=2, BizTalk=3
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.TypeConverter+StandardValuesCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/EventDescriptor.xml b/xml/System.ComponentModel/EventDescriptor.xml
index 390e9e7079e..8411be57a74 100644
--- a/xml/System.ComponentModel/EventDescriptor.xml
+++ b/xml/System.ComponentModel/EventDescriptor.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel/EventDescriptorCollection.xml b/xml/System.ComponentModel/EventDescriptorCollection.xml
index 26eef250ba8..fd059b952c1 100644
--- a/xml/System.ComponentModel/EventDescriptorCollection.xml
+++ b/xml/System.ComponentModel/EventDescriptorCollection.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -569,12 +565,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.EventDescriptor</ReturnType>
       </ReturnValue>
@@ -649,12 +639,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IEnumerator</ReturnType>
       </ReturnValue>
@@ -1044,10 +1028,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1244,12 +1224,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.EventDescriptorCollection</ReturnType>
       </ReturnValue>
@@ -1310,12 +1284,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.EventDescriptorCollection</ReturnType>
       </ReturnValue>
@@ -1381,12 +1349,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.EventDescriptorCollection</ReturnType>
       </ReturnValue>
@@ -1452,12 +1414,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.EventDescriptorCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/EventHandlerList.xml b/xml/System.ComponentModel/EventHandlerList.xml
index 473fba850de..f0e73e8261d 100644
--- a/xml/System.ComponentModel/EventHandlerList.xml
+++ b/xml/System.ComponentModel/EventHandlerList.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a simple list of delegates. This class cannot be inherited.</summary>
diff --git a/xml/System.ComponentModel/ExpandableObjectConverter.xml b/xml/System.ComponentModel/ExpandableObjectConverter.xml
index 8f7d13d8aad..2ceb4e48976 100644
--- a/xml/System.ComponentModel/ExpandableObjectConverter.xml
+++ b/xml/System.ComponentModel/ExpandableObjectConverter.xml
@@ -151,10 +151,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
@@ -237,12 +233,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/ExtenderProvidedPropertyAttribute.xml b/xml/System.ComponentModel/ExtenderProvidedPropertyAttribute.xml
index 7c6cb9246b1..631fb2c1304 100644
--- a/xml/System.ComponentModel/ExtenderProvidedPropertyAttribute.xml
+++ b/xml/System.ComponentModel/ExtenderProvidedPropertyAttribute.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies a property that is offered by an extender provider. This class cannot be inherited.</summary>
diff --git a/xml/System.ComponentModel/GuidConverter.xml b/xml/System.ComponentModel/GuidConverter.xml
index 580a03a2f17..4bae9ab041d 100644
--- a/xml/System.ComponentModel/GuidConverter.xml
+++ b/xml/System.ComponentModel/GuidConverter.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.Guid" /> objects to and from various other representations.</summary>
@@ -153,12 +149,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/IBindingList.xml b/xml/System.ComponentModel/IBindingList.xml
index 6ce28ca0e74..54ff7a6e7c5 100644
--- a/xml/System.ComponentModel/IBindingList.xml
+++ b/xml/System.ComponentModel/IBindingList.xml
@@ -48,12 +48,6 @@
       <InterfaceName>System.Collections.IList</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides the features required to support both complex and simple scenarios when binding to a data source.</summary>
     <remarks>
@@ -163,12 +157,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -744,10 +732,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptor</ReturnType>
diff --git a/xml/System.ComponentModel/IBindingListView.xml b/xml/System.ComponentModel/IBindingListView.xml
index 0f51bdd787a..374229d78d9 100644
--- a/xml/System.ComponentModel/IBindingListView.xml
+++ b/xml/System.ComponentModel/IBindingListView.xml
@@ -95,12 +95,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -161,14 +155,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -268,10 +254,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.ListSortDescriptionCollection</ReturnType>
diff --git a/xml/System.ComponentModel/IComNativeDescriptorHandler.xml b/xml/System.ComponentModel/IComNativeDescriptorHandler.xml
index 5ac7f271524..ad47f3b638d 100644
--- a/xml/System.ComponentModel/IComNativeDescriptorHandler.xml
+++ b/xml/System.ComponentModel/IComNativeDescriptorHandler.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Obsolete("IComNativeDescriptorHandler has been deprecated. Add a TypeDescriptionProvider to handle type TypeDescriptor.ComObjectType instead.")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("IComNativeDescriptorHandler has been deprecated. Add a TypeDescriptionProvider to handle type TypeDescriptor.ComObjectType instead.")&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
       <AttributeName Language="C#">[System.Obsolete("This interface has been deprecated. Add a TypeDescriptionProvider to handle type TypeDescriptor.ComObjectType instead.  http://go.microsoft.com/fwlink/?linkid=14202")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("This interface has been deprecated. Add a TypeDescriptionProvider to handle type TypeDescriptor.ComObjectType instead.  http://go.microsoft.com/fwlink/?linkid=14202")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel/IComponent.xml b/xml/System.ComponentModel/IComponent.xml
index 2cfed0553ee..09510449c20 100644
--- a/xml/System.ComponentModel/IComponent.xml
+++ b/xml/System.ComponentModel/IComponent.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.ComponentModel.Designer("System.Windows.Forms.Design.ComponentDocumentDesigner, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.ComponentModel.Design.IRootDesigner, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Designer("System.Windows.Forms.Design.ComponentDocumentDesigner, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.ComponentModel.Design.IRootDesigner, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Design.Serialization.RootDesignerSerializer("System.ComponentModel.Design.Serialization.RootCodeDomSerializer, System.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.ComponentModel.Design.Serialization.CodeDomSerializer, System.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Design.Serialization.RootDesignerSerializer("System.ComponentModel.Design.Serialization.RootCodeDomSerializer, System.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.ComponentModel.Design.Serialization.CodeDomSerializer, System.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", true)&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel/IContainer.xml b/xml/System.ComponentModel/IContainer.xml
index b4fde01e34a..de14f13ee61 100644
--- a/xml/System.ComponentModel/IContainer.xml
+++ b/xml/System.ComponentModel/IContainer.xml
@@ -43,10 +43,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -244,10 +240,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.ComponentCollection</ReturnType>
diff --git a/xml/System.ComponentModel/ICustomTypeDescriptor.xml b/xml/System.ComponentModel/ICustomTypeDescriptor.xml
index 4cb0f786580..9c8f4970aa5 100644
--- a/xml/System.ComponentModel/ICustomTypeDescriptor.xml
+++ b/xml/System.ComponentModel/ICustomTypeDescriptor.xml
@@ -39,12 +39,6 @@
     <TypeForwarding From="System.ComponentModel.TypeConverter" FromVersion="4.1.1.0" To="System" ToVersion="4.0.0.0" FrameworkAlternate="netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an interface that supplies dynamic custom type information for an object.</summary>
     <remarks>
@@ -157,12 +151,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -215,12 +203,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -278,10 +260,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Generic TypeConverters may require the generic types to be annotated. For example, NullableConverter requires the underlying type to be DynamicallyAccessedMembers All.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Generic TypeConverters may require the generic types to be annotated. For example, NullableConverter requires the underlying type to be DynamicallyAccessedMembers All.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.TypeConverter</ReturnType>
@@ -321,12 +299,6 @@
       <AssemblyInfo>
         <AssemblyName>System</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.TypeConverter</ReturnType>
       </ReturnValue>
@@ -382,10 +354,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The built-in EventDescriptor implementation uses Reflection which requires unreferenced code.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The built-in EventDescriptor implementation uses Reflection which requires unreferenced code.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.EventDescriptor</ReturnType>
@@ -438,10 +406,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("PropertyDescriptor's PropertyType cannot be statically discovered.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("PropertyDescriptor's PropertyType cannot be statically discovered.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptor</ReturnType>
@@ -919,12 +883,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/IDataErrorInfo.xml b/xml/System.ComponentModel/IDataErrorInfo.xml
index c02466b8ee7..2d44c84aebb 100644
--- a/xml/System.ComponentModel/IDataErrorInfo.xml
+++ b/xml/System.ComponentModel/IDataErrorInfo.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides the functionality to offer custom error information that a user interface can bind to.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.ComponentModel/IExtenderProvider.xml b/xml/System.ComponentModel/IExtenderProvider.xml
index a0d962597d5..591df98a729 100644
--- a/xml/System.ComponentModel/IExtenderProvider.xml
+++ b/xml/System.ComponentModel/IExtenderProvider.xml
@@ -39,12 +39,6 @@
     <TypeForwarding From="System.ComponentModel.TypeConverter" FromVersion="4.1.1.0" To="System" ToVersion="4.0.0.0" FrameworkAlternate="netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Defines the interface for extending properties to other components in a container.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel/IIntellisenseBuilder.xml b/xml/System.ComponentModel/IIntellisenseBuilder.xml
index 45ea3fd3a1b..09b8b9f2692 100644
--- a/xml/System.ComponentModel/IIntellisenseBuilder.xml
+++ b/xml/System.ComponentModel/IIntellisenseBuilder.xml
@@ -36,12 +36,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.TypeConverter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an interface to facilitate the retrieval of the builder's name and to display the builder.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.ComponentModel/IListSource.xml b/xml/System.ComponentModel/IListSource.xml
index 0d64340db20..2c131d7a8db 100644
--- a/xml/System.ComponentModel/IListSource.xml
+++ b/xml/System.ComponentModel/IListSource.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.ComponentModel.TypeConverter("System.Windows.Forms.Design.DataSourceConverter, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.TypeConverter("System.Windows.Forms.Design.DataSourceConverter, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5">
       <AttributeName Language="C#">[System.ComponentModel.Editor("System.Windows.Forms.Design.DataSourceListEditor, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.Drawing.Design.UITypeEditor, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("System.Windows.Forms.Design.DataSourceListEditor, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.Drawing.Design.UITypeEditor, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel/INestedContainer.xml b/xml/System.ComponentModel/INestedContainer.xml
index a6bc014a72a..bee96acb0e0 100644
--- a/xml/System.ComponentModel/INestedContainer.xml
+++ b/xml/System.ComponentModel/INestedContainer.xml
@@ -100,10 +100,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.IComponent</ReturnType>
diff --git a/xml/System.ComponentModel/INestedSite.xml b/xml/System.ComponentModel/INestedSite.xml
index 83a25338e59..0b5c0c6a0c2 100644
--- a/xml/System.ComponentModel/INestedSite.xml
+++ b/xml/System.ComponentModel/INestedSite.xml
@@ -87,10 +87,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.ComponentModel/INotifyDataErrorInfo.xml b/xml/System.ComponentModel/INotifyDataErrorInfo.xml
index cebbb7399df..c2e9a03a78f 100644
--- a/xml/System.ComponentModel/INotifyDataErrorInfo.xml
+++ b/xml/System.ComponentModel/INotifyDataErrorInfo.xml
@@ -43,12 +43,6 @@
     <TypeForwarding From="System.Windows" FromVersion="4.0.0.0" To="System" ToVersion="4.0.0.0" FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Defines members that data entity classes can implement to provide custom synchronous and asynchronous validation support.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel/INotifyPropertyChanged.xml b/xml/System.ComponentModel/INotifyPropertyChanged.xml
index 9f9309e6e7e..076a6b19bea 100644
--- a/xml/System.ComponentModel/INotifyPropertyChanged.xml
+++ b/xml/System.ComponentModel/INotifyPropertyChanged.xml
@@ -39,12 +39,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ObjectModel" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Notifies clients that a property value has changed.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel/INotifyPropertyChanging.xml b/xml/System.ComponentModel/INotifyPropertyChanging.xml
index d85d256c3ca..1c9b898443b 100644
--- a/xml/System.ComponentModel/INotifyPropertyChanging.xml
+++ b/xml/System.ComponentModel/INotifyPropertyChanging.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ObjectModel" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Notifies clients that a property value is changing.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel/ISite.xml b/xml/System.ComponentModel/ISite.xml
index 81548d9cb28..6e39916a023 100644
--- a/xml/System.ComponentModel/ISite.xml
+++ b/xml/System.ComponentModel/ISite.xml
@@ -43,10 +43,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -119,10 +115,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.IComponent</ReturnType>
diff --git a/xml/System.ComponentModel/ISupportInitializeNotification.xml b/xml/System.ComponentModel/ISupportInitializeNotification.xml
index b4778713ea0..9feba650646 100644
--- a/xml/System.ComponentModel/ISupportInitializeNotification.xml
+++ b/xml/System.ComponentModel/ISupportInitializeNotification.xml
@@ -40,12 +40,6 @@
       <InterfaceName>System.ComponentModel.ISupportInitialize</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Allows coordination of initialization for a component and its dependent properties.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel/ISynchronizeInvoke.xml b/xml/System.ComponentModel/ISynchronizeInvoke.xml
index cf767f3bf56..110bbcc88c5 100644
--- a/xml/System.ComponentModel/ISynchronizeInvoke.xml
+++ b/xml/System.ComponentModel/ISynchronizeInvoke.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.ComponentModel.Primitives" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides a way to synchronously or asynchronously execute a delegate.</summary>
     <remarks>
@@ -218,12 +212,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/ITypeDescriptorContext.xml b/xml/System.ComponentModel/ITypeDescriptorContext.xml
index 196fa31aba0..0f0902323ba 100644
--- a/xml/System.ComponentModel/ITypeDescriptorContext.xml
+++ b/xml/System.ComponentModel/ITypeDescriptorContext.xml
@@ -44,10 +44,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel/ITypedList.xml b/xml/System.ComponentModel/ITypedList.xml
index 3066878cebe..4f82181d072 100644
--- a/xml/System.ComponentModel/ITypedList.xml
+++ b/xml/System.ComponentModel/ITypedList.xml
@@ -39,12 +39,6 @@
     <TypeForwarding From="System.ComponentModel.TypeConverter" FromVersion="4.1.1.0" To="System" ToVersion="4.0.0.0" FrameworkAlternate="netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides functionality to discover the schema for a bindable list, where the properties available for binding differ from the public properties of the object to bind to.</summary>
     <remarks>
diff --git a/xml/System.ComponentModel/ImmutableObjectAttribute.xml b/xml/System.ComponentModel/ImmutableObjectAttribute.xml
index e535d1ad2ff..dc4a1b49183 100644
--- a/xml/System.ComponentModel/ImmutableObjectAttribute.xml
+++ b/xml/System.ComponentModel/ImmutableObjectAttribute.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that an object has no subproperties capable of being edited. This class cannot be inherited.</summary>
@@ -197,12 +193,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/InheritanceAttribute.xml b/xml/System.ComponentModel/InheritanceAttribute.xml
index 6777f0062ac..fc6cefd5320 100644
--- a/xml/System.ComponentModel/InheritanceAttribute.xml
+++ b/xml/System.ComponentModel/InheritanceAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates whether the component associated with this attribute has been inherited from a base class. This class cannot be inherited.</summary>
@@ -241,12 +237,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/InitializationEventAttribute.xml b/xml/System.ComponentModel/InitializationEventAttribute.xml
index 1f2847ddf02..da5a8e264cf 100644
--- a/xml/System.ComponentModel/InitializationEventAttribute.xml
+++ b/xml/System.ComponentModel/InitializationEventAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies which event is raised on initialization. This class cannot be inherited.</summary>
diff --git a/xml/System.ComponentModel/InstallerTypeAttribute.xml b/xml/System.ComponentModel/InstallerTypeAttribute.xml
index c1d9ef1266c..cbda169aa74 100644
--- a/xml/System.ComponentModel/InstallerTypeAttribute.xml
+++ b/xml/System.ComponentModel/InstallerTypeAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the installer for a type that installs components.</summary>
@@ -163,12 +159,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="installerType" Type="System.Type">
           <Attributes>
diff --git a/xml/System.ComponentModel/InstanceCreationEditor.xml b/xml/System.ComponentModel/InstanceCreationEditor.xml
index 66fa5b73190..de890a196b1 100644
--- a/xml/System.ComponentModel/InstanceCreationEditor.xml
+++ b/xml/System.ComponentModel/InstanceCreationEditor.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Creates an instance of a particular type of property from a drop-down box within the <see cref="T:System.Windows.Forms.PropertyGrid" />.</summary>
diff --git a/xml/System.ComponentModel/InvalidAsynchronousStateException.xml b/xml/System.ComponentModel/InvalidAsynchronousStateException.xml
index 61bfcfd5377..e708695a0ef 100644
--- a/xml/System.ComponentModel/InvalidAsynchronousStateException.xml
+++ b/xml/System.ComponentModel/InvalidAsynchronousStateException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -239,10 +235,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel/InvalidEnumArgumentException.xml b/xml/System.ComponentModel/InvalidEnumArgumentException.xml
index cbc182f7a11..f0206753c9c 100644
--- a/xml/System.ComponentModel/InvalidEnumArgumentException.xml
+++ b/xml/System.ComponentModel/InvalidEnumArgumentException.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -175,10 +171,6 @@ This exception is thrown if you pass an invalid enumeration value to a method or
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -286,10 +278,6 @@ This exception is thrown if you pass an invalid enumeration value to a method or
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel/LicFileLicenseProvider.xml b/xml/System.ComponentModel/LicFileLicenseProvider.xml
index a4b5c9b57f6..b85303cb921 100644
--- a/xml/System.ComponentModel/LicFileLicenseProvider.xml
+++ b/xml/System.ComponentModel/LicFileLicenseProvider.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an implementation of a <see cref="T:System.ComponentModel.LicenseProvider" />. The provider works in a similar fashion to the Microsoft .NET Framework standard licensing model.</summary>
diff --git a/xml/System.ComponentModel/License.xml b/xml/System.ComponentModel/License.xml
index 96a78e6499b..cf942f84990 100644
--- a/xml/System.ComponentModel/License.xml
+++ b/xml/System.ComponentModel/License.xml
@@ -210,10 +210,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.ComponentModel/LicenseContext.xml b/xml/System.ComponentModel/LicenseContext.xml
index 77b783398fd..eb1d9b057f2 100644
--- a/xml/System.ComponentModel/LicenseContext.xml
+++ b/xml/System.ComponentModel/LicenseContext.xml
@@ -141,12 +141,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -215,12 +209,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -265,12 +253,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/LicenseException.xml b/xml/System.ComponentModel/LicenseException.xml
index eaae3a02519..9cbce824e03 100644
--- a/xml/System.ComponentModel/LicenseException.xml
+++ b/xml/System.ComponentModel/LicenseException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -184,10 +180,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1" />
@@ -398,10 +390,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.ComponentModel/LicenseManager.xml b/xml/System.ComponentModel/LicenseManager.xml
index d214feb46be..b55a9c54097 100644
--- a/xml/System.ComponentModel/LicenseManager.xml
+++ b/xml/System.ComponentModel/LicenseManager.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides properties and methods to add a license to a component and to manage a <see cref="T:System.ComponentModel.LicenseProvider" />. This class cannot be inherited.</summary>
@@ -451,10 +447,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -761,12 +753,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.License</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/LicenseProvider.xml b/xml/System.ComponentModel/LicenseProvider.xml
index a74a6c6b6ea..915395665ab 100644
--- a/xml/System.ComponentModel/LicenseProvider.xml
+++ b/xml/System.ComponentModel/LicenseProvider.xml
@@ -141,12 +141,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.License</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/LicenseProviderAttribute.xml b/xml/System.ComponentModel/LicenseProviderAttribute.xml
index e836abf5dba..273fb62d794 100644
--- a/xml/System.ComponentModel/LicenseProviderAttribute.xml
+++ b/xml/System.ComponentModel/LicenseProviderAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the <see cref="T:System.ComponentModel.LicenseProvider" /> to use with a class. This class cannot be inherited.</summary>
@@ -179,10 +175,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -328,12 +320,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -437,10 +423,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
diff --git a/xml/System.ComponentModel/ListBindableAttribute.xml b/xml/System.ComponentModel/ListBindableAttribute.xml
index b9e0a822376..ceea99026e6 100644
--- a/xml/System.ComponentModel/ListBindableAttribute.xml
+++ b/xml/System.ComponentModel/ListBindableAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that a list can be used as a data source. A visual designer should use this attribute to determine whether to display a particular list in a data-binding picker. This class cannot be inherited.</summary>
@@ -240,12 +236,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/ListChangedEventArgs.xml b/xml/System.ComponentModel/ListChangedEventArgs.xml
index 2d761cc5e65..b1cb09b2a0e 100644
--- a/xml/System.ComponentModel/ListChangedEventArgs.xml
+++ b/xml/System.ComponentModel/ListChangedEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.ComponentModel.IBindingList.ListChanged" /> event.</summary>
diff --git a/xml/System.ComponentModel/ListSortDescription.xml b/xml/System.ComponentModel/ListSortDescription.xml
index 4211b845ffd..fe310047cac 100644
--- a/xml/System.ComponentModel/ListSortDescription.xml
+++ b/xml/System.ComponentModel/ListSortDescription.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a description of the sort operation applied to a data source.</summary>
diff --git a/xml/System.ComponentModel/ListSortDescriptionCollection.xml b/xml/System.ComponentModel/ListSortDescriptionCollection.xml
index 0afbbec2def..9fb2807f0cf 100644
--- a/xml/System.ComponentModel/ListSortDescriptionCollection.xml
+++ b/xml/System.ComponentModel/ListSortDescriptionCollection.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.ComponentModel.ListSortDescription" /> objects.</summary>
@@ -255,12 +251,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/LocalizableAttribute.xml b/xml/System.ComponentModel/LocalizableAttribute.xml
index cf8c3e0062d..608093f0f3b 100644
--- a/xml/System.ComponentModel/LocalizableAttribute.xml
+++ b/xml/System.ComponentModel/LocalizableAttribute.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies whether a property or parameter should be localized. This class cannot be inherited.</summary>
@@ -242,12 +238,6 @@ The following example marks a property as needing to be localized.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/LookupBindingPropertiesAttribute.xml b/xml/System.ComponentModel/LookupBindingPropertiesAttribute.xml
index b02bc5ca665..0f2093ecb92 100644
--- a/xml/System.ComponentModel/LookupBindingPropertiesAttribute.xml
+++ b/xml/System.ComponentModel/LookupBindingPropertiesAttribute.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the properties that support lookup-based binding. This class cannot be inherited.</summary>
@@ -182,10 +178,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel/MarshalByValueComponent.xml b/xml/System.ComponentModel/MarshalByValueComponent.xml
index 9f3a798d966..0e9e34076cd 100644
--- a/xml/System.ComponentModel/MarshalByValueComponent.xml
+++ b/xml/System.ComponentModel/MarshalByValueComponent.xml
@@ -73,10 +73,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Designer("System.Windows.Forms.Design.ComponentDocumentDesigner, System.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.ComponentModel.Design.IRootDesigner))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Designer("System.Windows.Forms.Design.ComponentDocumentDesigner, System.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.ComponentModel.Design.IRootDesigner))&gt;]</AttributeName>
@@ -470,10 +466,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.EventHandlerList</ReturnType>
@@ -562,12 +554,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/MaskedTextProvider.xml b/xml/System.ComponentModel/MaskedTextProvider.xml
index b5ee277471d..a541b52b659 100644
--- a/xml/System.ComponentModel/MaskedTextProvider.xml
+++ b/xml/System.ComponentModel/MaskedTextProvider.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a mask-parsing service that can be used by any number of controls that support masking, such as the <see cref="T:System.Windows.Forms.MaskedTextBox" /> control.</summary>
diff --git a/xml/System.ComponentModel/MemberDescriptor.xml b/xml/System.ComponentModel/MemberDescriptor.xml
index 173df6ca787..b9e9844d673 100644
--- a/xml/System.ComponentModel/MemberDescriptor.xml
+++ b/xml/System.ComponentModel/MemberDescriptor.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -671,12 +667,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1084,12 +1074,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.ISite</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/MergablePropertyAttribute.xml b/xml/System.ComponentModel/MergablePropertyAttribute.xml
index 2e6440c8d71..d0686f5af4b 100644
--- a/xml/System.ComponentModel/MergablePropertyAttribute.xml
+++ b/xml/System.ComponentModel/MergablePropertyAttribute.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that this property can be combined with properties belonging to other objects in a Properties window.</summary>
@@ -313,12 +309,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/MultilineStringConverter.xml b/xml/System.ComponentModel/MultilineStringConverter.xml
index d627d26d557..fa9d3b833fb 100644
--- a/xml/System.ComponentModel/MultilineStringConverter.xml
+++ b/xml/System.ComponentModel/MultilineStringConverter.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert multiline strings to a simple string.</summary>
diff --git a/xml/System.ComponentModel/NestedContainer.xml b/xml/System.ComponentModel/NestedContainer.xml
index d3835acdb8e..07c09ff8bb7 100644
--- a/xml/System.ComponentModel/NestedContainer.xml
+++ b/xml/System.ComponentModel/NestedContainer.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the base implementation for the <see cref="T:System.ComponentModel.INestedContainer" /> interface, which enables containers to have an owning component.</summary>
@@ -411,10 +407,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.ComponentModel/NotifyParentPropertyAttribute.xml b/xml/System.ComponentModel/NotifyParentPropertyAttribute.xml
index 08da5fe2c0b..7f0e7c09b93 100644
--- a/xml/System.ComponentModel/NotifyParentPropertyAttribute.xml
+++ b/xml/System.ComponentModel/NotifyParentPropertyAttribute.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates that the parent property is notified when the value of the property that this attribute is applied to is modified. This class cannot be inherited.</summary>
@@ -211,12 +207,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/NullableConverter.xml b/xml/System.ComponentModel/NullableConverter.xml
index 41ce8e248f9..f4e126f44e4 100644
--- a/xml/System.ComponentModel/NullableConverter.xml
+++ b/xml/System.ComponentModel/NullableConverter.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides automatic conversion between a nullable type and its underlying primitive type.</summary>
@@ -91,10 +87,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The UnderlyingType cannot be statically discovered.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The UnderlyingType cannot be statically discovered.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="type" Type="System.Type" />
@@ -139,12 +131,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -785,10 +771,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -839,10 +821,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -893,10 +871,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel/ParenthesizePropertyNameAttribute.xml b/xml/System.ComponentModel/ParenthesizePropertyNameAttribute.xml
index f17a0501210..d4aab9da6a6 100644
--- a/xml/System.ComponentModel/ParenthesizePropertyNameAttribute.xml
+++ b/xml/System.ComponentModel/ParenthesizePropertyNameAttribute.xml
@@ -242,12 +242,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/PasswordPropertyTextAttribute.xml b/xml/System.ComponentModel/PasswordPropertyTextAttribute.xml
index 5643280d8cb..429737a3dfb 100644
--- a/xml/System.ComponentModel/PasswordPropertyTextAttribute.xml
+++ b/xml/System.ComponentModel/PasswordPropertyTextAttribute.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates that an object's text representation is obscured by characters such as asterisks. This class cannot be inherited.</summary>
@@ -248,12 +244,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/ProgressChangedEventArgs.xml b/xml/System.ComponentModel/ProgressChangedEventArgs.xml
index 3ccc4925cbc..fe50a9d2fbd 100644
--- a/xml/System.ComponentModel/ProgressChangedEventArgs.xml
+++ b/xml/System.ComponentModel/ProgressChangedEventArgs.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.ComponentModel.BackgroundWorker.ProgressChanged" /> event.</summary>
diff --git a/xml/System.ComponentModel/PropertyChangedEventArgs.xml b/xml/System.ComponentModel/PropertyChangedEventArgs.xml
index 02f04dfa8c3..d13bf500a06 100644
--- a/xml/System.ComponentModel/PropertyChangedEventArgs.xml
+++ b/xml/System.ComponentModel/PropertyChangedEventArgs.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.ComponentModel.INotifyPropertyChanged.PropertyChanged" /> event.</summary>
diff --git a/xml/System.ComponentModel/PropertyChangingEventArgs.xml b/xml/System.ComponentModel/PropertyChangingEventArgs.xml
index 47dab59abdf..b87b8c4a81c 100644
--- a/xml/System.ComponentModel/PropertyChangingEventArgs.xml
+++ b/xml/System.ComponentModel/PropertyChangingEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.ComponentModel.INotifyPropertyChanging.PropertyChanging" /> event.</summary>
diff --git a/xml/System.ComponentModel/PropertyDescriptor.xml b/xml/System.ComponentModel/PropertyDescriptor.xml
index 158c03a4389..3cdc5746c3d 100644
--- a/xml/System.ComponentModel/PropertyDescriptor.xml
+++ b/xml/System.ComponentModel/PropertyDescriptor.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -626,12 +622,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1229,10 +1219,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Calls ComponentType.Assembly.GetType on the non-fully qualified typeName, which the trimmer cannot recognize.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Calls ComponentType.Assembly.GetType on the non-fully qualified typeName, which the trimmer cannot recognize.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -1294,12 +1280,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -1773,12 +1753,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/PropertyDescriptorCollection.xml b/xml/System.ComponentModel/PropertyDescriptorCollection.xml
index a9b5b2d2c8a..421773696c7 100644
--- a/xml/System.ComponentModel/PropertyDescriptorCollection.xml
+++ b/xml/System.ComponentModel/PropertyDescriptorCollection.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.ComponentModel.PropertyDescriptor" /> objects.</summary>
@@ -672,12 +668,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -781,12 +771,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1045,12 +1029,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/PropertyTabAttribute.xml b/xml/System.ComponentModel/PropertyTabAttribute.xml
index 2e7d9febe66..732237e4232 100644
--- a/xml/System.ComponentModel/PropertyTabAttribute.xml
+++ b/xml/System.ComponentModel/PropertyTabAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Identifies the property tab or tabs to display for the specified class or classes.</summary>
@@ -373,12 +369,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -433,12 +423,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -549,10 +533,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Types referenced by tabClassNames may be trimmed.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Types referenced by tabClassNames may be trimmed.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -628,10 +608,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.ComponentModel/ProvidePropertyAttribute.xml b/xml/System.ComponentModel/ProvidePropertyAttribute.xml
index 3580811ff36..0cad5e3a46e 100644
--- a/xml/System.ComponentModel/ProvidePropertyAttribute.xml
+++ b/xml/System.ComponentModel/ProvidePropertyAttribute.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the name of the property that an implementer of <see cref="T:System.ComponentModel.IExtenderProvider" /> offers to other components. This class cannot be inherited.</summary>
@@ -229,12 +225,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/ReadOnlyAttribute.xml b/xml/System.ComponentModel/ReadOnlyAttribute.xml
index 06cd4593b66..39d378dfb8c 100644
--- a/xml/System.ComponentModel/ReadOnlyAttribute.xml
+++ b/xml/System.ComponentModel/ReadOnlyAttribute.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies whether the property this attribute is bound to is read-only or read/write. This class cannot be inherited.</summary>
@@ -249,12 +245,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/RecommendedAsConfigurableAttribute.xml b/xml/System.ComponentModel/RecommendedAsConfigurableAttribute.xml
index 47a3425b6bc..0fccbb81118 100644
--- a/xml/System.ComponentModel/RecommendedAsConfigurableAttribute.xml
+++ b/xml/System.ComponentModel/RecommendedAsConfigurableAttribute.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that the property can be used as an application setting.</summary>
@@ -242,12 +238,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/ReferenceConverter.xml b/xml/System.ComponentModel/ReferenceConverter.xml
index 870e9c283e1..f94ab25cdde 100644
--- a/xml/System.ComponentModel/ReferenceConverter.xml
+++ b/xml/System.ComponentModel/ReferenceConverter.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert object references to and from other representations.</summary>
@@ -214,12 +210,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -285,12 +275,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -420,12 +404,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -479,12 +457,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/RefreshEventArgs.xml b/xml/System.ComponentModel/RefreshEventArgs.xml
index 1458352b617..1e7c24cd247 100644
--- a/xml/System.ComponentModel/RefreshEventArgs.xml
+++ b/xml/System.ComponentModel/RefreshEventArgs.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.ComponentModel.TypeDescriptor.Refreshed" /> event.</summary>
diff --git a/xml/System.ComponentModel/RefreshPropertiesAttribute.xml b/xml/System.ComponentModel/RefreshPropertiesAttribute.xml
index 24f8976d94b..f5cbe839393 100644
--- a/xml/System.ComponentModel/RefreshPropertiesAttribute.xml
+++ b/xml/System.ComponentModel/RefreshPropertiesAttribute.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates that the property grid should refresh when the associated property value changes. This class cannot be inherited.</summary>
@@ -262,12 +258,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/RunInstallerAttribute.xml b/xml/System.ComponentModel/RunInstallerAttribute.xml
index bb2f39c6bb2..ffcd886be20 100644
--- a/xml/System.ComponentModel/RunInstallerAttribute.xml
+++ b/xml/System.ComponentModel/RunInstallerAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies whether the Visual Studio Custom Action Installer or the <see href="https://learn.microsoft.com/dotnet/framework/tools/installutil-exe-installer-tool">Installutil.exe (Installer Tool)</see> should be invoked when the assembly is installed.</summary>
@@ -212,12 +208,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/RunWorkerCompletedEventArgs.xml b/xml/System.ComponentModel/RunWorkerCompletedEventArgs.xml
index 8cefa7d8731..00046626266 100644
--- a/xml/System.ComponentModel/RunWorkerCompletedEventArgs.xml
+++ b/xml/System.ComponentModel/RunWorkerCompletedEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the *MethodName*<see langword="Completed" /> event.</summary>
diff --git a/xml/System.ComponentModel/SettingsBindableAttribute.xml b/xml/System.ComponentModel/SettingsBindableAttribute.xml
index 73945c550fc..3fe2ae4d035 100644
--- a/xml/System.ComponentModel/SettingsBindableAttribute.xml
+++ b/xml/System.ComponentModel/SettingsBindableAttribute.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies when a component property can be bound to an application setting.</summary>
@@ -183,12 +179,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/StringConverter.xml b/xml/System.ComponentModel/StringConverter.xml
index 657d61435e5..998c729068f 100644
--- a/xml/System.ComponentModel/StringConverter.xml
+++ b/xml/System.ComponentModel/StringConverter.xml
@@ -134,12 +134,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -204,12 +198,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/SyntaxCheck.xml b/xml/System.ComponentModel/SyntaxCheck.xml
index eacaee26c35..902cc30d0bb 100644
--- a/xml/System.ComponentModel/SyntaxCheck.xml
+++ b/xml/System.ComponentModel/SyntaxCheck.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods to verify the machine name and path conform to a specific syntax. This class cannot be inherited.</summary>
diff --git a/xml/System.ComponentModel/TimeOnlyConverter.xml b/xml/System.ComponentModel/TimeOnlyConverter.xml
index 3f72b5713c7..eb3482a825d 100644
--- a/xml/System.ComponentModel/TimeOnlyConverter.xml
+++ b/xml/System.ComponentModel/TimeOnlyConverter.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.TimeOnly" /> objects to and from various other representations.</summary>
@@ -63,12 +59,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/TimeSpanConverter.xml b/xml/System.ComponentModel/TimeSpanConverter.xml
index d981169a916..f531522bc43 100644
--- a/xml/System.ComponentModel/TimeSpanConverter.xml
+++ b/xml/System.ComponentModel/TimeSpanConverter.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.TimeSpan" /> objects to and from other representations.</summary>
@@ -153,12 +149,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/ToolboxItemAttribute.xml b/xml/System.ComponentModel/ToolboxItemAttribute.xml
index 61248541891..4ba9a9c0bab 100644
--- a/xml/System.ComponentModel/ToolboxItemAttribute.xml
+++ b/xml/System.ComponentModel/ToolboxItemAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an attribute of a toolbox item.</summary>
@@ -312,12 +308,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -511,10 +501,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
diff --git a/xml/System.ComponentModel/ToolboxItemFilterAttribute.xml b/xml/System.ComponentModel/ToolboxItemFilterAttribute.xml
index fa717b65077..ea5a505d4b6 100644
--- a/xml/System.ComponentModel/ToolboxItemFilterAttribute.xml
+++ b/xml/System.ComponentModel/ToolboxItemFilterAttribute.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -223,12 +219,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -425,12 +415,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/TypeConverter+SimplePropertyDescriptor.xml b/xml/System.ComponentModel/TypeConverter+SimplePropertyDescriptor.xml
index 327f2efe80f..ba8d8f573bc 100644
--- a/xml/System.ComponentModel/TypeConverter+SimplePropertyDescriptor.xml
+++ b/xml/System.ComponentModel/TypeConverter+SimplePropertyDescriptor.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an <see langword="abstract" /> class that provides properties for objects that do not have properties.</summary>
diff --git a/xml/System.ComponentModel/TypeConverter+StandardValuesCollection.xml b/xml/System.ComponentModel/TypeConverter+StandardValuesCollection.xml
index a1afc95d9c9..666920143d2 100644
--- a/xml/System.ComponentModel/TypeConverter+StandardValuesCollection.xml
+++ b/xml/System.ComponentModel/TypeConverter+StandardValuesCollection.xml
@@ -48,12 +48,6 @@
       <InterfaceName>System.Collections.IEnumerable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents a collection of values.</summary>
     <remarks>
@@ -101,12 +95,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="values" Type="System.Collections.ICollection" />
       </Parameters>
@@ -157,12 +145,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -278,12 +260,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IEnumerator</ReturnType>
       </ReturnValue>
@@ -335,10 +311,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.ComponentModel/TypeConverter.xml b/xml/System.ComponentModel/TypeConverter.xml
index 18e0ed01ccf..03e266eea94 100644
--- a/xml/System.ComponentModel/TypeConverter.xml
+++ b/xml/System.ComponentModel/TypeConverter.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -216,10 +212,6 @@ Note: Your derived type might be marked as <see langword="internal" /> or <see l
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -279,12 +271,6 @@ Note: Your derived type might be marked as <see langword="internal" /> or <see l
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -510,12 +496,6 @@ Note: Your derived type might be marked as <see langword="internal" /> or <see l
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -649,12 +629,6 @@ Note: Your derived type might be marked as <see langword="internal" /> or <see l
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -787,10 +761,6 @@ Note: Your derived type might be marked as <see langword="internal" /> or <see l
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1482,10 +1452,6 @@ Note: Your derived type might be marked as <see langword="internal" /> or <see l
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1618,12 +1584,6 @@ Note: Your derived type might be marked as <see langword="internal" /> or <see l
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Exception</ReturnType>
       </ReturnValue>
@@ -1678,12 +1638,6 @@ Note: Your derived type might be marked as <see langword="internal" /> or <see l
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Exception</ReturnType>
       </ReturnValue>
@@ -1874,10 +1828,6 @@ Note: Your derived type might be marked as <see langword="internal" /> or <see l
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -2618,10 +2568,6 @@ Note: Your derived type might be marked as <see langword="internal" /> or <see l
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -2776,12 +2722,6 @@ Note: Your derived type might be marked as <see langword="internal" /> or <see l
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/TypeConverterAttribute.xml b/xml/System.ComponentModel/TypeConverterAttribute.xml
index 52f112f02db..10abc7c41e9 100644
--- a/xml/System.ComponentModel/TypeConverterAttribute.xml
+++ b/xml/System.ComponentModel/TypeConverterAttribute.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies what type to use as a converter for the object this attribute is bound to.</summary>
@@ -424,12 +420,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/TypeDescriptionProvider.xml b/xml/System.ComponentModel/TypeDescriptionProvider.xml
index 7dfaede1746..337f7cdcfae 100644
--- a/xml/System.ComponentModel/TypeDescriptionProvider.xml
+++ b/xml/System.ComponentModel/TypeDescriptionProvider.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides supplemental metadata to the <see cref="T:System.ComponentModel.TypeDescriptor" />.</summary>
@@ -240,10 +236,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -961,12 +953,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.ICustomTypeDescriptor</ReturnType>
       </ReturnValue>
@@ -1096,12 +1082,6 @@
       <AssemblyInfo>
         <AssemblyName>System</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.ICustomTypeDescriptor</ReturnType>
       </ReturnValue>
@@ -1225,12 +1205,6 @@
       <AssemblyInfo>
         <AssemblyName>System</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/TypeDescriptionProviderAttribute.xml b/xml/System.ComponentModel/TypeDescriptionProviderAttribute.xml
index 696a8ec4964..c184901b2ab 100644
--- a/xml/System.ComponentModel/TypeDescriptionProviderAttribute.xml
+++ b/xml/System.ComponentModel/TypeDescriptionProviderAttribute.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the custom type description provider for a class. This class cannot be inherited.</summary>
diff --git a/xml/System.ComponentModel/TypeDescriptor.xml b/xml/System.ComponentModel/TypeDescriptor.xml
index 23e164e62c5..b112da27b0f 100644
--- a/xml/System.ComponentModel/TypeDescriptor.xml
+++ b/xml/System.ComponentModel/TypeDescriptor.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about the characteristics for a component, such as its attributes, properties, and events. This class cannot be inherited.</summary>
@@ -638,14 +634,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="net-9.0">
           <AttributeName Language="C#">[get: System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("COM type descriptors are not trim-compatible.")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("COM type descriptors are not trim-compatible.")&gt;]</AttributeName>
@@ -1055,10 +1043,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -4837,14 +4821,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.RefreshEventHandler</ReturnType>
@@ -4885,12 +4861,6 @@
       <AssemblyInfo>
         <AssemblyName>System</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/TypeListConverter.xml b/xml/System.ComponentModel/TypeListConverter.xml
index 528bd7cd21c..767fb127e87 100644
--- a/xml/System.ComponentModel/TypeListConverter.xml
+++ b/xml/System.ComponentModel/TypeListConverter.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter that can be used to populate a list box with available types.</summary>
@@ -112,10 +108,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -170,12 +162,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -427,12 +413,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.TypeConverter+StandardValuesCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/VersionConverter.xml b/xml/System.ComponentModel/VersionConverter.xml
index 10dbd947368..f9928621baf 100644
--- a/xml/System.ComponentModel/VersionConverter.xml
+++ b/xml/System.ComponentModel/VersionConverter.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.Version" /> objects to and from various other representations.</summary>
@@ -76,12 +72,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ComponentModel/WarningException.xml b/xml/System.ComponentModel/WarningException.xml
index 1fd35ce5d9d..6e630a11a1a 100644
--- a/xml/System.ComponentModel/WarningException.xml
+++ b/xml/System.ComponentModel/WarningException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -212,10 +208,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1" />
@@ -415,10 +407,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.ComponentModel/Win32Exception.xml b/xml/System.ComponentModel/Win32Exception.xml
index bce7461937d..046280d2e80 100644
--- a/xml/System.ComponentModel/Win32Exception.xml
+++ b/xml/System.ComponentModel/Win32Exception.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Security.SuppressUnmanagedCodeSecurity]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SuppressUnmanagedCodeSecurity&gt;]</AttributeName>
@@ -232,12 +228,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" Index="0" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.3;netstandard-1.4;netstandard-1.6;netstandard-2.0;netstandard-2.1" />
       </Parameters>
@@ -282,10 +272,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -394,12 +380,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" Index="0" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.3;netstandard-1.4;netstandard-1.6;netstandard-2.0;netstandard-2.1" />
         <Parameter Name="innerException" Type="System.Exception" Index="1" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.3;netstandard-1.4;netstandard-1.6;netstandard-2.0;netstandard-2.1" />
diff --git a/xml/System.Data.Common/DataAdapter.xml b/xml/System.Data.Common/DataAdapter.xml
index d0f52d61b9b..9963ee9c7c3 100644
--- a/xml/System.Data.Common/DataAdapter.xml
+++ b/xml/System.Data.Common/DataAdapter.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a set of SQL commands and a database connection that are used to fill the <see cref="T:System.Data.DataSet" /> and update the data source.</summary>
@@ -847,14 +843,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.FillErrorEventHandler</ReturnType>
diff --git a/xml/System.Data.Common/DataColumnMapping.xml b/xml/System.Data.Common/DataColumnMapping.xml
index 9469898d11e..cf5db2fc3bb 100644
--- a/xml/System.Data.Common/DataColumnMapping.xml
+++ b/xml/System.Data.Common/DataColumnMapping.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.TypeConverter(typeof(System.Data.Common.DataColumnMappingConverter))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.TypeConverter(typeof(System.Data.Common.DataColumnMappingConverter))&gt;]</AttributeName>
@@ -175,12 +171,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="sourceColumn" Type="System.String" />
         <Parameter Name="dataSetColumn" Type="System.String" />
@@ -315,10 +305,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataColumn</ReturnType>
@@ -388,10 +374,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataColumn</ReturnType>
diff --git a/xml/System.Data.Common/DataColumnMappingCollection.xml b/xml/System.Data.Common/DataColumnMappingCollection.xml
index d9689b358a5..5407987c4ff 100644
--- a/xml/System.Data.Common/DataColumnMappingCollection.xml
+++ b/xml/System.Data.Common/DataColumnMappingCollection.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains a collection of <see cref="T:System.Data.Common.DataColumnMapping" /> objects.</summary>
@@ -175,12 +171,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -238,12 +228,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DataColumnMapping</ReturnType>
       </ReturnValue>
@@ -468,12 +452,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -535,12 +513,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -831,10 +803,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DataColumnMapping</ReturnType>
@@ -921,10 +889,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataColumn</ReturnType>
@@ -1063,12 +1027,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1128,12 +1086,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1190,12 +1142,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1311,12 +1257,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1570,12 +1510,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.Common/DataTableMapping.xml b/xml/System.Data.Common/DataTableMapping.xml
index edf68c4a9cc..c7feb106a80 100644
--- a/xml/System.Data.Common/DataTableMapping.xml
+++ b/xml/System.Data.Common/DataTableMapping.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.TypeConverter(typeof(System.Data.Common.DataTableMappingConverter))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.TypeConverter(typeof(System.Data.Common.DataTableMappingConverter))&gt;]</AttributeName>
@@ -173,12 +169,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="sourceTable" Type="System.String" />
         <Parameter Name="dataSetTable" Type="System.String" />
@@ -233,12 +223,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="sourceTable" Type="System.String" />
         <Parameter Name="dataSetTable" Type="System.String" />
diff --git a/xml/System.Data.Common/DataTableMappingCollection.xml b/xml/System.Data.Common/DataTableMappingCollection.xml
index 548576cf047..8adcd984c2f 100644
--- a/xml/System.Data.Common/DataTableMappingCollection.xml
+++ b/xml/System.Data.Common/DataTableMappingCollection.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.DataTableMappingCollectionEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.DataTableMappingCollectionEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))&gt;]</AttributeName>
@@ -188,12 +184,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -250,12 +240,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DataTableMapping</ReturnType>
       </ReturnValue>
@@ -474,12 +458,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -539,12 +517,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -969,12 +941,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1033,12 +999,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1094,12 +1054,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1212,12 +1166,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1465,12 +1413,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.Common/DbBatch.xml b/xml/System.Data.Common/DbBatch.xml
index 0d299ed22ed..5a76f280112 100644
--- a/xml/System.Data.Common/DbBatch.xml
+++ b/xml/System.Data.Common/DbBatch.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a batch of commands which can be executed against a data source in a single round trip. Provides a base class for database-specific classes that represent command batches.</summary>
@@ -141,14 +137,6 @@ The precise semantics of batch execution vary across ADO.NET providers, especial
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbConnection</ReturnType>
@@ -253,14 +241,6 @@ The precise semantics of batch execution vary across ADO.NET providers, especial
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbConnection</ReturnType>
@@ -291,14 +271,6 @@ The precise semantics of batch execution vary across ADO.NET providers, especial
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbTransaction</ReturnType>
@@ -662,12 +634,6 @@ The precise semantics of batch execution vary across ADO.NET providers, especial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -813,14 +779,6 @@ The precise semantics of batch execution vary across ADO.NET providers, especial
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbTransaction</ReturnType>
diff --git a/xml/System.Data.Common/DbBatchCommand.xml b/xml/System.Data.Common/DbBatchCommand.xml
index 7433cab2aa8..ce4587d936d 100644
--- a/xml/System.Data.Common/DbBatchCommand.xml
+++ b/xml/System.Data.Common/DbBatchCommand.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a single command within a <see cref="T:System.Data.Common.DbBatch" />. A batch can be executed against a data source in a single round trip.</summary>
diff --git a/xml/System.Data.Common/DbBatchCommandCollection.xml b/xml/System.Data.Common/DbBatchCommandCollection.xml
index c482424e9d5..10a02418889 100644
--- a/xml/System.Data.Common/DbBatchCommandCollection.xml
+++ b/xml/System.Data.Common/DbBatchCommandCollection.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The base class for a collection of instances of <see cref="T:System.Data.Common.DbBatchCommand" />, contained in a <see cref="T:System.Data.Common.DbBatch" />.</summary>
diff --git a/xml/System.Data.Common/DbColumn.xml b/xml/System.Data.Common/DbColumn.xml
index 01ed1783128..e4b9f18dc45 100644
--- a/xml/System.Data.Common/DbColumn.xml
+++ b/xml/System.Data.Common/DbColumn.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netstandard-2.0">
       <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
@@ -357,14 +353,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -900,12 +888,6 @@
         <AssemblyName>System.Data</AssemblyName>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.Common/DbCommand.xml b/xml/System.Data.Common/DbCommand.xml
index 1017f695178..01f2813c087 100644
--- a/xml/System.Data.Common/DbCommand.xml
+++ b/xml/System.Data.Common/DbCommand.xml
@@ -77,10 +77,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an SQL statement or stored procedure to execute against a data source. Provides a base class for database-specific classes that represent commands. <see cref="Overload:System.Data.Common.DbCommand.ExecuteNonQueryAsync" />.</summary>
@@ -406,14 +402,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbConnection</ReturnType>
@@ -549,14 +537,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbConnection</ReturnType>
@@ -648,14 +628,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbTransaction</ReturnType>
@@ -1520,12 +1492,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -2230,14 +2196,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbTransaction</ReturnType>
diff --git a/xml/System.Data.Common/DbCommandBuilder.xml b/xml/System.Data.Common/DbCommandBuilder.xml
index 05fca4bf07b..10de7361d65 100644
--- a/xml/System.Data.Common/DbCommandBuilder.xml
+++ b/xml/System.Data.Common/DbCommandBuilder.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Automatically generates single-table commands used to reconcile changes made to a <see cref="T:System.Data.DataSet" /> with the associated database. This is an abstract class that can only be inherited.</summary>
@@ -354,14 +350,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbDataAdapter</ReturnType>
diff --git a/xml/System.Data.Common/DbConnection.xml b/xml/System.Data.Common/DbConnection.xml
index 2d5a7b860f2..94a44b6d8f6 100644
--- a/xml/System.Data.Common/DbConnection.xml
+++ b/xml/System.Data.Common/DbConnection.xml
@@ -77,10 +77,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the core behavior of database connections and provides a base class for database-specific connections.</summary>
@@ -1121,10 +1117,6 @@ This property returns `false` by default; providers that implement <xref:System.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbProviderFactory</ReturnType>
@@ -1273,12 +1265,6 @@ This property returns `false` by default; providers that implement <xref:System.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1998,14 +1984,6 @@ This property returns `false` by default; providers that implement <xref:System.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.StateChangeEventHandler</ReturnType>
diff --git a/xml/System.Data.Common/DbConnectionStringBuilder.xml b/xml/System.Data.Common/DbConnectionStringBuilder.xml
index 1ae1d15b1a5..12925201d84 100644
--- a/xml/System.Data.Common/DbConnectionStringBuilder.xml
+++ b/xml/System.Data.Common/DbConnectionStringBuilder.xml
@@ -68,10 +68,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a base class for strongly typed connection string builders.</summary>
diff --git a/xml/System.Data.Common/DbDataAdapter.xml b/xml/System.Data.Common/DbDataAdapter.xml
index 2525f361312..751862f2645 100644
--- a/xml/System.Data.Common/DbDataAdapter.xml
+++ b/xml/System.Data.Common/DbDataAdapter.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Aids implementation of the <see cref="T:System.Data.IDbDataAdapter" /> interface. Inheritors of <see cref="T:System.Data.Common.DbDataAdapter" /> implement a set of functions to provide strong typing, but inherit most of the functionality needed to fully implement a **DataAdapter**.</summary>
@@ -565,14 +561,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbCommand</ReturnType>
@@ -2309,12 +2297,6 @@ adapter.FillSchema(dataset, "AAA"); // Fills the schema of table "aaa" because o
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2489,14 +2471,6 @@ adapter.FillSchema(dataset, "AAA"); // Fills the schema of table "aaa" because o
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbCommand</ReturnType>
@@ -2717,14 +2691,6 @@ adapter.FillSchema(dataset, "AAA"); // Fills the schema of table "aaa" because o
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbCommand</ReturnType>
@@ -3836,14 +3802,6 @@ DataSet dataset = new DataSet();
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbCommand</ReturnType>
diff --git a/xml/System.Data.Common/DbDataReader.xml b/xml/System.Data.Common/DbDataReader.xml
index 94fe84d603a..c6dcb3ea76f 100644
--- a/xml/System.Data.Common/DbDataReader.xml
+++ b/xml/System.Data.Common/DbDataReader.xml
@@ -84,10 +84,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Reads a forward-only stream of rows from a data source.</summary>
@@ -654,12 +650,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
@@ -771,12 +761,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
@@ -2124,12 +2108,6 @@ private static void GetCredits(String connectionString)
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTable</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.Common/DbDataReaderExtensions.xml b/xml/System.Data.Common/DbDataReaderExtensions.xml
index aade1be2229..81dfdb87894 100644
--- a/xml/System.Data.Common/DbDataReaderExtensions.xml
+++ b/xml/System.Data.Common/DbDataReaderExtensions.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netstandard-2.0">
       <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
diff --git a/xml/System.Data.Common/DbDataRecord.xml b/xml/System.Data.Common/DbDataRecord.xml
index fa92400cd0f..ec1b6540fce 100644
--- a/xml/System.Data.Common/DbDataRecord.xml
+++ b/xml/System.Data.Common/DbDataRecord.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Implements <see cref="T:System.Data.IDataRecord" /> and <see cref="T:System.ComponentModel.ICustomTypeDescriptor" />, and provides data binding support for <see cref="T:System.Data.Common.DbEnumerator" />.</summary>
@@ -320,12 +316,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
@@ -455,12 +445,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.Common/DbDataSource.xml b/xml/System.Data.Common/DbDataSource.xml
index b2260d294b8..4693d2cc776 100644
--- a/xml/System.Data.Common/DbDataSource.xml
+++ b/xml/System.Data.Common/DbDataSource.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a data source which can be used to obtain open connections, and against which commands can be executed directly.</summary>
diff --git a/xml/System.Data.Common/DbDataSourceEnumerator.xml b/xml/System.Data.Common/DbDataSourceEnumerator.xml
index 94cbf464802..cc37cf685c1 100644
--- a/xml/System.Data.Common/DbDataSourceEnumerator.xml
+++ b/xml/System.Data.Common/DbDataSourceEnumerator.xml
@@ -125,12 +125,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTable</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.Common/DbEnumerator.xml b/xml/System.Data.Common/DbEnumerator.xml
index 06f10a37e7a..c95ed79a2ff 100644
--- a/xml/System.Data.Common/DbEnumerator.xml
+++ b/xml/System.Data.Common/DbEnumerator.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Exposes the <see cref="M:System.Collections.IEnumerable.GetEnumerator" /> method, which supports a simple iteration over a collection by a .NET data provider.</summary>
diff --git a/xml/System.Data.Common/DbException.xml b/xml/System.Data.Common/DbException.xml
index 72c88721880..0ea5aab6472 100644
--- a/xml/System.Data.Common/DbException.xml
+++ b/xml/System.Data.Common/DbException.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -229,10 +225,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
diff --git a/xml/System.Data.Common/DbMetaDataCollectionNames.xml b/xml/System.Data.Common/DbMetaDataCollectionNames.xml
index 3869bb70156..f6bb9e09fa0 100644
--- a/xml/System.Data.Common/DbMetaDataCollectionNames.xml
+++ b/xml/System.Data.Common/DbMetaDataCollectionNames.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a list of constants for the well-known **MetaDataCollections**: **DataSourceInformation**, **DataTypes**, **MetaDataCollections**, **ReservedWords**, and **Restrictions**.</summary>
diff --git a/xml/System.Data.Common/DbMetaDataColumnNames.xml b/xml/System.Data.Common/DbMetaDataColumnNames.xml
index 770c8d0b15e..f301daa4686 100644
--- a/xml/System.Data.Common/DbMetaDataColumnNames.xml
+++ b/xml/System.Data.Common/DbMetaDataColumnNames.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides static values that are used for the column names in the **MetaDataCollection** objects contained in the <see cref="T:System.Data.DataTable" />. The <see cref="T:System.Data.DataTable" /> is created by the **GetSchema** method.</summary>
diff --git a/xml/System.Data.Common/DbParameter.xml b/xml/System.Data.Common/DbParameter.xml
index c8abfd31038..5477d25219a 100644
--- a/xml/System.Data.Common/DbParameter.xml
+++ b/xml/System.Data.Common/DbParameter.xml
@@ -64,10 +64,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a parameter to a <see cref="T:System.Data.Common.DbCommand" /> and optionally, its mapping to a <see cref="T:System.Data.DataSet" /> column. For more information on parameters, see <see href="/dotnet/framework/data/adonet/configuring-parameters-and-parameter-data-types">Configuring Parameters and Parameter Data Types</see>.</summary>
@@ -942,14 +938,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Data.Common/DbParameterCollection.xml b/xml/System.Data.Common/DbParameterCollection.xml
index 263b4e19f80..547f9a79672 100644
--- a/xml/System.Data.Common/DbParameterCollection.xml
+++ b/xml/System.Data.Common/DbParameterCollection.xml
@@ -73,10 +73,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The base class for a collection of parameters relevant to a <see cref="T:System.Data.Common.DbCommand" />.</summary>
diff --git a/xml/System.Data.Common/DbProviderFactories.xml b/xml/System.Data.Common/DbProviderFactories.xml
index 67ef2ce202e..bc1f832e5dc 100644
--- a/xml/System.Data.Common/DbProviderFactories.xml
+++ b/xml/System.Data.Common/DbProviderFactories.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a set of static methods for creating one or more instances of <see cref="T:System.Data.Common.DbProviderFactory" /> classes.</summary>
diff --git a/xml/System.Data.Common/DbProviderFactory.xml b/xml/System.Data.Common/DbProviderFactory.xml
index d56cd564723..5483de8d109 100644
--- a/xml/System.Data.Common/DbProviderFactory.xml
+++ b/xml/System.Data.Common/DbProviderFactory.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a set of methods for creating instances of a provider's implementation of the data source classes.</summary>
@@ -277,12 +273,6 @@ This property returns `false` by default; providers that implement <xref:System.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbBatch</ReturnType>
       </ReturnValue>
@@ -312,12 +302,6 @@ This property returns `false` by default; providers that implement <xref:System.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbBatchCommand</ReturnType>
       </ReturnValue>
@@ -568,12 +552,6 @@ This property returns `false` by default; providers that implement <xref:System.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbDataSource</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.Common/DbTransaction.xml b/xml/System.Data.Common/DbTransaction.xml
index 6e019a3c7cc..90de584f203 100644
--- a/xml/System.Data.Common/DbTransaction.xml
+++ b/xml/System.Data.Common/DbTransaction.xml
@@ -77,10 +77,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the core behavior of database transactions and provides a base class for database-specific transactions.</summary>
@@ -260,10 +256,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbConnection</ReturnType>
@@ -321,10 +313,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbConnection</ReturnType>
diff --git a/xml/System.Data.Common/IDbColumnSchemaGenerator.xml b/xml/System.Data.Common/IDbColumnSchemaGenerator.xml
index a663e883df9..051015c54a7 100644
--- a/xml/System.Data.Common/IDbColumnSchemaGenerator.xml
+++ b/xml/System.Data.Common/IDbColumnSchemaGenerator.xml
@@ -36,10 +36,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netstandard-2.0">
       <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
diff --git a/xml/System.Data.Common/RowUpdatedEventArgs.xml b/xml/System.Data.Common/RowUpdatedEventArgs.xml
index af5920c68ff..efe989db4f6 100644
--- a/xml/System.Data.Common/RowUpdatedEventArgs.xml
+++ b/xml/System.Data.Common/RowUpdatedEventArgs.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see langword="RowUpdated" /> event of a .NET data provider.</summary>
@@ -163,10 +159,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.IDbCommand</ReturnType>
@@ -344,14 +336,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Exception</ReturnType>
diff --git a/xml/System.Data.Common/RowUpdatingEventArgs.xml b/xml/System.Data.Common/RowUpdatingEventArgs.xml
index 7888e52faee..2863e8a1b8d 100644
--- a/xml/System.Data.Common/RowUpdatingEventArgs.xml
+++ b/xml/System.Data.Common/RowUpdatingEventArgs.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the data for the **RowUpdating** event of a .NET data provider.</summary>
@@ -104,12 +100,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="dataRow" Type="System.Data.DataRow" />
         <Parameter Name="command" Type="System.Data.IDbCommand">
@@ -301,10 +291,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataRow</ReturnType>
@@ -449,10 +435,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DataTableMapping</ReturnType>
diff --git a/xml/System.Data.Common/SchemaTableColumn.xml b/xml/System.Data.Common/SchemaTableColumn.xml
index 800025d8cc8..9b8ed7552bc 100644
--- a/xml/System.Data.Common/SchemaTableColumn.xml
+++ b/xml/System.Data.Common/SchemaTableColumn.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Describes the column metadata of the schema for a database table.</summary>
diff --git a/xml/System.Data.Common/SchemaTableOptionalColumn.xml b/xml/System.Data.Common/SchemaTableOptionalColumn.xml
index b7ce1049e64..6180dde258d 100644
--- a/xml/System.Data.Common/SchemaTableOptionalColumn.xml
+++ b/xml/System.Data.Common/SchemaTableOptionalColumn.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Describes optional column metadata of the schema for a database table.</summary>
diff --git a/xml/System.Data.Odbc/OdbcCommand.xml b/xml/System.Data.Odbc/OdbcCommand.xml
index 8ffad7ce216..95140a1a93c 100644
--- a/xml/System.Data.Odbc/OdbcCommand.xml
+++ b/xml/System.Data.Odbc/OdbcCommand.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Designer("Microsoft.VSDesigner.Data.VS.OdbcCommandDesigner, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Designer("Microsoft.VSDesigner.Data.VS.OdbcCommandDesigner, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")&gt;]</AttributeName>
@@ -352,14 +348,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.ComponentModel.DefaultValue("")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.DefaultValue("")&gt;]</AttributeName>
@@ -659,12 +647,6 @@ SELECT * FROM Customers WHERE CustomerID = ?
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbParameter</ReturnType>
       </ReturnValue>
@@ -695,12 +677,6 @@ SELECT * FROM Customers WHERE CustomerID = ?
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Odbc.OdbcParameter</ReturnType>
       </ReturnValue>
@@ -770,10 +746,6 @@ SELECT * FROM Customers WHERE CustomerID = ?
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbParameterCollection</ReturnType>
@@ -912,12 +884,6 @@ SELECT * FROM Customers WHERE CustomerID = ?
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbDataReader</ReturnType>
       </ReturnValue>
@@ -1019,12 +985,6 @@ SELECT * FROM Customers WHERE CustomerID = ?
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Odbc.OdbcDataReader</ReturnType>
       </ReturnValue>
@@ -1065,12 +1025,6 @@ SELECT * FROM Customers WHERE CustomerID = ?
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Odbc.OdbcDataReader</ReturnType>
       </ReturnValue>
@@ -1175,10 +1129,6 @@ SELECT * FROM Customers WHERE CustomerID = ?
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Odbc.OdbcParameterCollection</ReturnType>
diff --git a/xml/System.Data.Odbc/OdbcCommandBuilder.xml b/xml/System.Data.Odbc/OdbcCommandBuilder.xml
index ec48fe3765d..cbfbf8050f9 100644
--- a/xml/System.Data.Odbc/OdbcCommandBuilder.xml
+++ b/xml/System.Data.Odbc/OdbcCommandBuilder.xml
@@ -130,12 +130,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="adapter" Type="System.Data.Odbc.OdbcDataAdapter" />
       </Parameters>
@@ -216,14 +210,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.ComponentModel.DefaultValue(null)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.DefaultValue(null)&gt;]</AttributeName>
diff --git a/xml/System.Data.Odbc/OdbcConnection.xml b/xml/System.Data.Odbc/OdbcConnection.xml
index bb26e46e812..d4dd4f7eba8 100644
--- a/xml/System.Data.Odbc/OdbcConnection.xml
+++ b/xml/System.Data.Odbc/OdbcConnection.xml
@@ -162,12 +162,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="connectionString" Type="System.String" />
       </Parameters>
@@ -1123,14 +1117,6 @@ driver-defined-attribute-keyword ::= identifier
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Odbc.OdbcInfoMessageEventHandler</ReturnType>
diff --git a/xml/System.Data.Odbc/OdbcConnectionStringBuilder.xml b/xml/System.Data.Odbc/OdbcConnectionStringBuilder.xml
index 5320e3ccced..163e6fb9756 100644
--- a/xml/System.Data.Odbc/OdbcConnectionStringBuilder.xml
+++ b/xml/System.Data.Odbc/OdbcConnectionStringBuilder.xml
@@ -153,12 +153,6 @@ Driver={SQL Server};Server="MyServer;NewValue=Bad"
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="connectionString" Type="System.String" />
       </Parameters>
diff --git a/xml/System.Data.Odbc/OdbcDataAdapter.xml b/xml/System.Data.Odbc/OdbcDataAdapter.xml
index 7c5d31a9af0..36150ce24fd 100644
--- a/xml/System.Data.Odbc/OdbcDataAdapter.xml
+++ b/xml/System.Data.Odbc/OdbcDataAdapter.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.ComponentModel.DefaultEvent("RowUpdated")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.DefaultEvent("RowUpdated")&gt;]</AttributeName>
@@ -341,12 +337,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.RowUpdatedEventArgs</ReturnType>
       </ReturnValue>
@@ -393,12 +383,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.RowUpdatingEventArgs</ReturnType>
       </ReturnValue>
@@ -604,12 +588,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -641,12 +619,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.Odbc/OdbcDataReader.xml b/xml/System.Data.Odbc/OdbcDataReader.xml
index 7ff625cd371..6662be02aba 100644
--- a/xml/System.Data.Odbc/OdbcDataReader.xml
+++ b/xml/System.Data.Odbc/OdbcDataReader.xml
@@ -402,12 +402,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
@@ -523,12 +517,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
@@ -1294,12 +1282,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTable</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.Odbc/OdbcParameter.xml b/xml/System.Data.Odbc/OdbcParameter.xml
index 75cec68713c..c10213695c2 100644
--- a/xml/System.Data.Odbc/OdbcParameter.xml
+++ b/xml/System.Data.Odbc/OdbcParameter.xml
@@ -168,12 +168,6 @@ OleDbDataReader reader = command.ExecuteReader();
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" />
         <Parameter Name="type" Type="System.Data.Odbc.OdbcType" />
@@ -217,12 +211,6 @@ OleDbDataReader reader = command.ExecuteReader();
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" />
         <Parameter Name="value" Type="System.Object" />
@@ -268,12 +256,6 @@ Parameter = new OdbcParameter("@pname", Convert.ToInt32(0));
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" />
         <Parameter Name="type" Type="System.Data.Odbc.OdbcType" />
@@ -319,12 +301,6 @@ Parameter = new OdbcParameter("@pname", Convert.ToInt32(0));
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" />
         <Parameter Name="type" Type="System.Data.Odbc.OdbcType" />
@@ -377,10 +353,6 @@ Parameter = new OdbcParameter("@pname", Convert.ToInt32(0));
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="parameterName" Type="System.String" />
@@ -446,10 +418,6 @@ Parameter = new OdbcParameter("@pname", Convert.ToInt32(0));
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="parameterName" Type="System.String" Index="0" FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
@@ -1483,14 +1451,6 @@ public void CreateOdbcParameter()
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.ComponentModel.DefaultValue(null)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.DefaultValue(null)&gt;]</AttributeName>
diff --git a/xml/System.Data.Odbc/OdbcParameterCollection.xml b/xml/System.Data.Odbc/OdbcParameterCollection.xml
index df69881024d..53a994bf1a9 100644
--- a/xml/System.Data.Odbc/OdbcParameterCollection.xml
+++ b/xml/System.Data.Odbc/OdbcParameterCollection.xml
@@ -281,10 +281,6 @@ INSERT INTO MyTable VALUES (@p1, @p2, @p3);
           <AttributeName Language="C#">[System.Obsolete("Add(String parameterName, Object value) has been deprecated. Use AddWithValue(String parameterName, Object value) instead.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Add(String parameterName, Object value) has been deprecated. Use AddWithValue(String parameterName, Object value) instead.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Obsolete("Add(String parameterName, Object value) has been deprecated.  Use AddWithValue(String parameterName, Object value).  http://go.microsoft.com/fwlink/?linkid=14202", false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Add(String parameterName, Object value) has been deprecated.  Use AddWithValue(String parameterName, Object value).  http://go.microsoft.com/fwlink/?linkid=14202", false)&gt;]</AttributeName>
@@ -399,12 +395,6 @@ parameters.Add("@pname", Convert.ToInt32(0));
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Odbc.OdbcParameter</ReturnType>
       </ReturnValue>
@@ -530,12 +520,6 @@ parameters.Add("@pname", Convert.ToInt32(0));
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Odbc.OdbcParameter</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.Odbc/OdbcRowUpdatedEventArgs.xml b/xml/System.Data.Odbc/OdbcRowUpdatedEventArgs.xml
index 1b3565cffc9..7d4fcdf7621 100644
--- a/xml/System.Data.Odbc/OdbcRowUpdatedEventArgs.xml
+++ b/xml/System.Data.Odbc/OdbcRowUpdatedEventArgs.xml
@@ -125,10 +125,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Odbc.OdbcCommand</ReturnType>
diff --git a/xml/System.Data.Odbc/OdbcRowUpdatingEventArgs.xml b/xml/System.Data.Odbc/OdbcRowUpdatingEventArgs.xml
index 5c92557194e..ff3eec04f1e 100644
--- a/xml/System.Data.Odbc/OdbcRowUpdatingEventArgs.xml
+++ b/xml/System.Data.Odbc/OdbcRowUpdatingEventArgs.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Data.Odbc.OdbcDataAdapter.RowUpdating" /> event.</summary>
@@ -88,12 +84,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="row" Type="System.Data.DataRow" />
         <Parameter Name="command" Type="System.Data.IDbCommand">
diff --git a/xml/System.Data.Odbc/OdbcTransaction.xml b/xml/System.Data.Odbc/OdbcTransaction.xml
index d6884138203..4da66b3dadd 100644
--- a/xml/System.Data.Odbc/OdbcTransaction.xml
+++ b/xml/System.Data.Odbc/OdbcTransaction.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an SQL transaction to be made at a data source. This class cannot be inherited.</summary>
diff --git a/xml/System.Data.OleDb/OleDbCommand.xml b/xml/System.Data.OleDb/OleDbCommand.xml
index 7f2c67e6a2a..3a7b279e13a 100644
--- a/xml/System.Data.OleDb/OleDbCommand.xml
+++ b/xml/System.Data.OleDb/OleDbCommand.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Designer("Microsoft.VSDesigner.Data.VS.OleDbCommandDesigner, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Designer("Microsoft.VSDesigner.Data.VS.OleDbCommandDesigner, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")&gt;]</AttributeName>
@@ -407,12 +403,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.OleDb.OleDbCommand</ReturnType>
       </ReturnValue>
@@ -466,14 +456,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.ComponentModel.Editor("Microsoft.VSDesigner.Data.ADO.Design.OleDbCommandTextEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("Microsoft.VSDesigner.Data.ADO.Design.OleDbCommandTextEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))&gt;]</AttributeName>
@@ -729,12 +711,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbParameter</ReturnType>
       </ReturnValue>
@@ -765,12 +741,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.OleDb.OleDbParameter</ReturnType>
       </ReturnValue>
@@ -840,10 +810,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbParameterCollection</ReturnType>
@@ -981,12 +947,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.DbDataReader</ReturnType>
       </ReturnValue>
@@ -1096,12 +1056,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.OleDb.OleDbDataReader</ReturnType>
       </ReturnValue>
@@ -1151,12 +1105,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.OleDb.OleDbDataReader</ReturnType>
       </ReturnValue>
@@ -1283,10 +1231,6 @@ Int32 count = (Int32) ExecuteScalar();
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.Data.DataSysDescription("DbCommand_Parameters")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Data.DataSysDescription("DbCommand_Parameters")&gt;]</AttributeName>
diff --git a/xml/System.Data.OleDb/OleDbCommandBuilder.xml b/xml/System.Data.OleDb/OleDbCommandBuilder.xml
index fe466009627..5eb350c4c24 100644
--- a/xml/System.Data.OleDb/OleDbCommandBuilder.xml
+++ b/xml/System.Data.OleDb/OleDbCommandBuilder.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Automatically generates single-table commands that are used to reconcile changes made to a <see cref="T:System.Data.DataSet" /> with the associated database. This class cannot be inherited.</summary>
@@ -129,12 +125,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="adapter" Type="System.Data.OleDb.OleDbDataAdapter" />
       </Parameters>
@@ -219,14 +209,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.Data.DataSysDescription("OleDbCommandBuilder_DataAdapter")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Data.DataSysDescription("OleDbCommandBuilder_DataAdapter")&gt;]</AttributeName>
diff --git a/xml/System.Data.OleDb/OleDbConnection.xml b/xml/System.Data.OleDb/OleDbConnection.xml
index 5f08694a88f..93168fc08b0 100644
--- a/xml/System.Data.OleDb/OleDbConnection.xml
+++ b/xml/System.Data.OleDb/OleDbConnection.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an open connection to a data source.</summary>
@@ -181,12 +177,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="connectionString" Type="System.String" />
       </Parameters>
@@ -941,12 +931,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -987,12 +971,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTable</ReturnType>
       </ReturnValue>
@@ -1191,14 +1169,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.Data.DataSysDescription("DbConnection_InfoMessage")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Data.DataSysDescription("DbConnection_InfoMessage")&gt;]</AttributeName>
diff --git a/xml/System.Data.OleDb/OleDbConnectionStringBuilder.xml b/xml/System.Data.OleDb/OleDbConnectionStringBuilder.xml
index 8da289152ff..fc89870a909 100644
--- a/xml/System.Data.OleDb/OleDbConnectionStringBuilder.xml
+++ b/xml/System.Data.OleDb/OleDbConnectionStringBuilder.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a simple way to create and manage the contents of connection strings used by the <see cref="T:System.Data.OleDb.OleDbConnection" /> class.</summary>
@@ -164,12 +160,6 @@ Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Sample.mdb;User ID="Admin;NewVal
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="connectionString" Type="System.String" />
       </Parameters>
diff --git a/xml/System.Data.OleDb/OleDbDataAdapter.xml b/xml/System.Data.OleDb/OleDbDataAdapter.xml
index 53538dedd68..d8ff7bbc0a8 100644
--- a/xml/System.Data.OleDb/OleDbDataAdapter.xml
+++ b/xml/System.Data.OleDb/OleDbDataAdapter.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.ComponentModel.DefaultEvent("RowUpdated")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.DefaultEvent("RowUpdated")&gt;]</AttributeName>
@@ -356,12 +352,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.RowUpdatedEventArgs</ReturnType>
       </ReturnValue>
@@ -408,12 +398,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Common.RowUpdatingEventArgs</ReturnType>
       </ReturnValue>
@@ -565,12 +549,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -679,12 +657,6 @@ OleDbDataAdapter custDA = new OleDbDataAdapter();
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -851,12 +823,6 @@ OleDbDataAdapter custDA = new OleDbDataAdapter();
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -888,12 +854,6 @@ OleDbDataAdapter custDA = new OleDbDataAdapter();
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.OleDb/OleDbDataReader.xml b/xml/System.Data.OleDb/OleDbDataReader.xml
index c7679a49eb8..5c46ad0e9a6 100644
--- a/xml/System.Data.OleDb/OleDbDataReader.xml
+++ b/xml/System.Data.OleDb/OleDbDataReader.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a way of reading a forward-only stream of data rows from a data source. This class cannot be inherited.</summary>
@@ -381,12 +377,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
@@ -503,12 +493,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
@@ -1276,12 +1260,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTable</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.OleDb/OleDbEnumerator.xml b/xml/System.Data.OleDb/OleDbEnumerator.xml
index c299f827ffd..c1bdc2da7ff 100644
--- a/xml/System.Data.OleDb/OleDbEnumerator.xml
+++ b/xml/System.Data.OleDb/OleDbEnumerator.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a mechanism for enumerating all available OLE DB providers within the local network.</summary>
diff --git a/xml/System.Data.OleDb/OleDbError.xml b/xml/System.Data.OleDb/OleDbError.xml
index a9fbfe1d73c..65caa8d84d1 100644
--- a/xml/System.Data.OleDb/OleDbError.xml
+++ b/xml/System.Data.OleDb/OleDbError.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Data.OleDb/OleDbErrorCollection.xml b/xml/System.Data.OleDb/OleDbErrorCollection.xml
index 3b3f5802f75..20c04e8a892 100644
--- a/xml/System.Data.OleDb/OleDbErrorCollection.xml
+++ b/xml/System.Data.OleDb/OleDbErrorCollection.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Data.OleDb/OleDbException.xml b/xml/System.Data.OleDb/OleDbException.xml
index 315aa27a48b..d74ddfe7e55 100644
--- a/xml/System.Data.OleDb/OleDbException.xml
+++ b/xml/System.Data.OleDb/OleDbException.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Data.OleDb/OleDbFactory.xml b/xml/System.Data.OleDb/OleDbFactory.xml
index 6e139b07ece..a16cb799523 100644
--- a/xml/System.Data.OleDb/OleDbFactory.xml
+++ b/xml/System.Data.OleDb/OleDbFactory.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a set of methods for creating instances of the OLEDB provider's implementation of the data source classes.</summary>
diff --git a/xml/System.Data.OleDb/OleDbInfoMessageEventArgs.xml b/xml/System.Data.OleDb/OleDbInfoMessageEventArgs.xml
index 6f1e8491c08..f2735a81bac 100644
--- a/xml/System.Data.OleDb/OleDbInfoMessageEventArgs.xml
+++ b/xml/System.Data.OleDb/OleDbInfoMessageEventArgs.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Data.OleDb.OleDbConnection.InfoMessage" /> event. This class cannot be inherited.</summary>
@@ -174,10 +170,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Data.OleDb/OleDbMetaDataCollectionNames.xml b/xml/System.Data.OleDb/OleDbMetaDataCollectionNames.xml
index 5d346985dda..52886b87991 100644
--- a/xml/System.Data.OleDb/OleDbMetaDataCollectionNames.xml
+++ b/xml/System.Data.OleDb/OleDbMetaDataCollectionNames.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a list of constants for use with the **GetSchema** method to retrieve metadata collections.</summary>
diff --git a/xml/System.Data.OleDb/OleDbMetaDataColumnNames.xml b/xml/System.Data.OleDb/OleDbMetaDataColumnNames.xml
index 400264db587..6fac7ac8f6d 100644
--- a/xml/System.Data.OleDb/OleDbMetaDataColumnNames.xml
+++ b/xml/System.Data.OleDb/OleDbMetaDataColumnNames.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides static values that are used for the column names in the <see cref="T:System.Data.OleDb.OleDbMetaDataCollectionNames" /> objects contained in the <see cref="T:System.Data.DataTable" />. The <see cref="T:System.Data.DataTable" /> is created by the **GetSchema** method.</summary>
diff --git a/xml/System.Data.OleDb/OleDbParameter.xml b/xml/System.Data.OleDb/OleDbParameter.xml
index 2282b299b53..a5fcfe02b25 100644
--- a/xml/System.Data.OleDb/OleDbParameter.xml
+++ b/xml/System.Data.OleDb/OleDbParameter.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.TypeConverter(typeof(System.Data.OleDb.OleDbParameterConverter))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.TypeConverter(typeof(System.Data.OleDb.OleDbParameterConverter))&gt;]</AttributeName>
@@ -814,14 +810,6 @@ public void CreateOleDbParameter()
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.ComponentModel.DefaultValue("")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.DefaultValue("")&gt;]</AttributeName>
@@ -1232,14 +1220,6 @@ public void CreateOleDbParameter()
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.ComponentModel.DefaultValue("")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.DefaultValue("")&gt;]</AttributeName>
@@ -1473,12 +1453,6 @@ public void CreateOleDbParameter()
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.OleDb/OleDbParameterCollection.xml b/xml/System.Data.OleDb/OleDbParameterCollection.xml
index 9827c14197d..0410dc4ead6 100644
--- a/xml/System.Data.OleDb/OleDbParameterCollection.xml
+++ b/xml/System.Data.OleDb/OleDbParameterCollection.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.DBParametersEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.DBParametersEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))&gt;]</AttributeName>
@@ -287,10 +283,6 @@
           <AttributeName Language="C#">[System.Obsolete("Add(String parameterName, Object value) has been deprecated. Use AddWithValue(String parameterName, Object value) instead.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Add(String parameterName, Object value) has been deprecated. Use AddWithValue(String parameterName, Object value) instead.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Obsolete("Add(String parameterName, Object value) has been deprecated.  Use AddWithValue(String parameterName, Object value).  http://go.microsoft.com/fwlink/?linkid=14202", false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Add(String parameterName, Object value) has been deprecated.  Use AddWithValue(String parameterName, Object value).  http://go.microsoft.com/fwlink/?linkid=14202", false)&gt;]</AttributeName>
@@ -405,12 +397,6 @@ parameters.Add("@pname", Convert.ToInt32(0));
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.OleDb.OleDbParameter</ReturnType>
       </ReturnValue>
@@ -536,12 +522,6 @@ parameters.Add("@pname", Convert.ToInt32(0));
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.OleDb.OleDbParameter</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.OleDb/OleDbRowUpdatedEventArgs.xml b/xml/System.Data.OleDb/OleDbRowUpdatedEventArgs.xml
index 429762a9f16..22115c1c9b9 100644
--- a/xml/System.Data.OleDb/OleDbRowUpdatedEventArgs.xml
+++ b/xml/System.Data.OleDb/OleDbRowUpdatedEventArgs.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Data.OleDb.OleDbDataAdapter.RowUpdated" /> event.</summary>
@@ -87,12 +83,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="dataRow" Type="System.Data.DataRow" />
         <Parameter Name="command" Type="System.Data.IDbCommand">
diff --git a/xml/System.Data.OleDb/OleDbRowUpdatingEventArgs.xml b/xml/System.Data.OleDb/OleDbRowUpdatingEventArgs.xml
index 509a4a55161..2fa6014cfe9 100644
--- a/xml/System.Data.OleDb/OleDbRowUpdatingEventArgs.xml
+++ b/xml/System.Data.OleDb/OleDbRowUpdatingEventArgs.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Data.OleDb.OleDbDataAdapter.RowUpdating" /> event.</summary>
@@ -87,12 +83,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="dataRow" Type="System.Data.DataRow" />
         <Parameter Name="command" Type="System.Data.IDbCommand">
diff --git a/xml/System.Data.OleDb/OleDbTransaction.xml b/xml/System.Data.OleDb/OleDbTransaction.xml
index 27781a36476..c54958af04f 100644
--- a/xml/System.Data.OleDb/OleDbTransaction.xml
+++ b/xml/System.Data.OleDb/OleDbTransaction.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an SQL transaction to be made at a data source. This class cannot be inherited.</summary>
@@ -96,12 +92,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.OleDb.OleDbTransaction</ReturnType>
       </ReturnValue>
@@ -140,12 +130,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.OleDb.OleDbTransaction</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.SqlTypes/SqlAlreadyFilledException.xml b/xml/System.Data.SqlTypes/SqlAlreadyFilledException.xml
index d09aefdbf53..a3939e06e22 100644
--- a/xml/System.Data.SqlTypes/SqlAlreadyFilledException.xml
+++ b/xml/System.Data.SqlTypes/SqlAlreadyFilledException.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Data.SqlTypes/SqlBinary.xml b/xml/System.Data.SqlTypes/SqlBinary.xml
index 879cf0810e2..0aad4d2e56a 100644
--- a/xml/System.Data.SqlTypes/SqlBinary.xml
+++ b/xml/System.Data.SqlTypes/SqlBinary.xml
@@ -76,10 +76,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -127,12 +123,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="value" Type="System.Byte[]" />
       </Parameters>
@@ -323,12 +313,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -495,12 +479,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1302,12 +1280,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.SqlTypes/SqlBoolean.xml b/xml/System.Data.SqlTypes/SqlBoolean.xml
index 572ee0e432f..68ea2326e85 100644
--- a/xml/System.Data.SqlTypes/SqlBoolean.xml
+++ b/xml/System.Data.SqlTypes/SqlBoolean.xml
@@ -425,12 +425,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -553,12 +547,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -767,12 +755,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Data.SqlClient</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlQualifiedName</ReturnType>
       </ReturnValue>
@@ -2751,12 +2733,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.SqlTypes.SqlBoolean</ReturnType>
       </ReturnValue>
@@ -3376,12 +3352,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.SqlTypes/SqlByte.xml b/xml/System.Data.SqlTypes/SqlByte.xml
index 3a4e3552abc..27c2de0c40a 100644
--- a/xml/System.Data.SqlTypes/SqlByte.xml
+++ b/xml/System.Data.SqlTypes/SqlByte.xml
@@ -400,12 +400,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -576,12 +570,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -735,12 +723,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Data.SqlClient</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlQualifiedName</ReturnType>
       </ReturnValue>
@@ -2822,12 +2804,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.SqlTypes.SqlByte</ReturnType>
       </ReturnValue>
@@ -3497,12 +3473,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.SqlTypes/SqlBytes.xml b/xml/System.Data.SqlTypes/SqlBytes.xml
index 7299246bff8..0e077a13519 100644
--- a/xml/System.Data.SqlTypes/SqlBytes.xml
+++ b/xml/System.Data.SqlTypes/SqlBytes.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -169,12 +165,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="buffer" Type="System.Byte[]" />
       </Parameters>
@@ -278,12 +268,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="s" Type="System.IO.Stream" />
       </Parameters>
@@ -341,10 +325,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
diff --git a/xml/System.Data.SqlTypes/SqlChars.xml b/xml/System.Data.SqlTypes/SqlChars.xml
index aef8582085d..d3fff1d7935 100644
--- a/xml/System.Data.SqlTypes/SqlChars.xml
+++ b/xml/System.Data.SqlTypes/SqlChars.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -192,12 +188,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="buffer" Type="System.Char[]" />
       </Parameters>
@@ -310,10 +300,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Char[]</ReturnType>
diff --git a/xml/System.Data.SqlTypes/SqlDateTime.xml b/xml/System.Data.SqlTypes/SqlDateTime.xml
index 6597c53f218..6add88dbe26 100644
--- a/xml/System.Data.SqlTypes/SqlDateTime.xml
+++ b/xml/System.Data.SqlTypes/SqlDateTime.xml
@@ -572,12 +572,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -742,12 +736,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -901,12 +889,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Data.SqlClient</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlQualifiedName</ReturnType>
       </ReturnValue>
@@ -1997,12 +1979,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.SqlTypes.SqlDateTime</ReturnType>
       </ReturnValue>
@@ -2475,12 +2451,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.SqlTypes/SqlDecimal.xml b/xml/System.Data.SqlTypes/SqlDecimal.xml
index 9c4f36ff5c1..0db75109591 100644
--- a/xml/System.Data.SqlTypes/SqlDecimal.xml
+++ b/xml/System.Data.SqlTypes/SqlDecimal.xml
@@ -76,10 +76,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -761,12 +757,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1035,12 +1025,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4288,10 +4272,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
diff --git a/xml/System.Data.SqlTypes/SqlDouble.xml b/xml/System.Data.SqlTypes/SqlDouble.xml
index 4504e4e7f3d..486412fcfa7 100644
--- a/xml/System.Data.SqlTypes/SqlDouble.xml
+++ b/xml/System.Data.SqlTypes/SqlDouble.xml
@@ -298,12 +298,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -476,12 +470,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -635,12 +623,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Data.SqlClient</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlQualifiedName</ReturnType>
       </ReturnValue>
@@ -2363,12 +2345,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.SqlTypes.SqlDouble</ReturnType>
       </ReturnValue>
@@ -3033,12 +3009,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.SqlTypes/SqlGuid.xml b/xml/System.Data.SqlTypes/SqlGuid.xml
index a5e6c09af5d..0b05a30de80 100644
--- a/xml/System.Data.SqlTypes/SqlGuid.xml
+++ b/xml/System.Data.SqlTypes/SqlGuid.xml
@@ -136,12 +136,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="value" Type="System.Byte[]" />
       </Parameters>
@@ -234,12 +228,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="s" Type="System.String" />
       </Parameters>
@@ -453,12 +441,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -580,12 +562,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -742,12 +718,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Data.SqlClient</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlQualifiedName</ReturnType>
       </ReturnValue>
@@ -1702,12 +1672,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.SqlTypes.SqlGuid</ReturnType>
       </ReturnValue>
@@ -1955,12 +1919,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -2102,12 +2060,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.SqlTypes/SqlInt16.xml b/xml/System.Data.SqlTypes/SqlInt16.xml
index 742bcb9688f..fe3cb88ebce 100644
--- a/xml/System.Data.SqlTypes/SqlInt16.xml
+++ b/xml/System.Data.SqlTypes/SqlInt16.xml
@@ -396,12 +396,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -572,12 +566,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -731,12 +719,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Data.SqlClient</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlQualifiedName</ReturnType>
       </ReturnValue>
@@ -2871,12 +2853,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.SqlTypes.SqlInt16</ReturnType>
       </ReturnValue>
@@ -3546,12 +3522,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.SqlTypes/SqlInt32.xml b/xml/System.Data.SqlTypes/SqlInt32.xml
index 96e8f04a99d..0214b56ad71 100644
--- a/xml/System.Data.SqlTypes/SqlInt32.xml
+++ b/xml/System.Data.SqlTypes/SqlInt32.xml
@@ -400,12 +400,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -576,12 +570,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -735,12 +723,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Data.SqlClient</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlQualifiedName</ReturnType>
       </ReturnValue>
@@ -2880,12 +2862,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.SqlTypes.SqlInt32</ReturnType>
       </ReturnValue>
@@ -3555,12 +3531,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.SqlTypes/SqlInt64.xml b/xml/System.Data.SqlTypes/SqlInt64.xml
index 89d563033ae..6bd96b97708 100644
--- a/xml/System.Data.SqlTypes/SqlInt64.xml
+++ b/xml/System.Data.SqlTypes/SqlInt64.xml
@@ -400,12 +400,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -576,12 +570,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -735,12 +723,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Data.SqlClient</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlQualifiedName</ReturnType>
       </ReturnValue>
@@ -2863,12 +2845,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.SqlTypes.SqlInt64</ReturnType>
       </ReturnValue>
@@ -3538,12 +3514,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.SqlTypes/SqlMoney.xml b/xml/System.Data.SqlTypes/SqlMoney.xml
index cb26c9c5a27..c65fac9cf44 100644
--- a/xml/System.Data.SqlTypes/SqlMoney.xml
+++ b/xml/System.Data.SqlTypes/SqlMoney.xml
@@ -450,12 +450,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -625,12 +619,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -854,12 +842,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Data.SqlClient</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlQualifiedName</ReturnType>
       </ReturnValue>
@@ -2682,12 +2664,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.SqlTypes.SqlMoney</ReturnType>
       </ReturnValue>
@@ -3540,12 +3516,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.SqlTypes/SqlNotFilledException.xml b/xml/System.Data.SqlTypes/SqlNotFilledException.xml
index cf9d99e58f8..18ceca46ea7 100644
--- a/xml/System.Data.SqlTypes/SqlNotFilledException.xml
+++ b/xml/System.Data.SqlTypes/SqlNotFilledException.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Data.SqlTypes/SqlNullValueException.xml b/xml/System.Data.SqlTypes/SqlNullValueException.xml
index 1c0cf84208b..f650b134d4f 100644
--- a/xml/System.Data.SqlTypes/SqlNullValueException.xml
+++ b/xml/System.Data.SqlTypes/SqlNullValueException.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Data.SqlTypes/SqlSingle.xml b/xml/System.Data.SqlTypes/SqlSingle.xml
index dbe6fb893ad..e9b8f620c48 100644
--- a/xml/System.Data.SqlTypes/SqlSingle.xml
+++ b/xml/System.Data.SqlTypes/SqlSingle.xml
@@ -360,12 +360,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -536,12 +530,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -695,12 +683,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Data.SqlClient</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlQualifiedName</ReturnType>
       </ReturnValue>
@@ -2422,12 +2404,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.SqlTypes.SqlSingle</ReturnType>
       </ReturnValue>
@@ -3097,12 +3073,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.SqlTypes/SqlString.xml b/xml/System.Data.SqlTypes/SqlString.xml
index dcde3319457..5e01e079de2 100644
--- a/xml/System.Data.SqlTypes/SqlString.xml
+++ b/xml/System.Data.SqlTypes/SqlString.xml
@@ -76,10 +76,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -157,12 +153,6 @@ SqlString mySqlString = new SqlString("abc", CultureInfo.CurrentCulture.LCID);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="data" Type="System.String" />
       </Parameters>
@@ -209,12 +199,6 @@ SqlString mySqlString = new SqlString("abc", CultureInfo.CurrentCulture.LCID);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="data" Type="System.String" />
         <Parameter Name="lcid" Type="System.Int32" />
@@ -312,12 +296,6 @@ SqlString mySqlString = new SqlString("abc", CultureInfo.CurrentCulture.LCID);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="data" Type="System.String" />
         <Parameter Name="lcid" Type="System.Int32" />
@@ -420,12 +398,6 @@ SqlString mySqlString = new SqlString("abc", CultureInfo.CurrentCulture.LCID);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="lcid" Type="System.Int32" />
         <Parameter Name="compareOptions" Type="System.Data.SqlTypes.SqlCompareOptions" />
@@ -480,12 +452,6 @@ SqlString mySqlString = new SqlString("abc", CultureInfo.CurrentCulture.LCID);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="lcid" Type="System.Int32" />
         <Parameter Name="compareOptions" Type="System.Data.SqlTypes.SqlCompareOptions" />
@@ -917,12 +883,6 @@ SqlString mySqlString = new SqlString("abc", CultureInfo.CurrentCulture.LCID);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1138,12 +1098,6 @@ SqlString mySqlString = new SqlString("abc", CultureInfo.CurrentCulture.LCID);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1300,12 +1254,6 @@ SqlString mySqlString = new SqlString("abc", CultureInfo.CurrentCulture.LCID);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1353,12 +1301,6 @@ SqlString mySqlString = new SqlString("abc", CultureInfo.CurrentCulture.LCID);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data.SqlTypes/SqlTruncateException.xml b/xml/System.Data.SqlTypes/SqlTruncateException.xml
index 246941a5c4a..52822e23fb6 100644
--- a/xml/System.Data.SqlTypes/SqlTruncateException.xml
+++ b/xml/System.Data.SqlTypes/SqlTruncateException.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Data.SqlTypes/SqlTypeException.xml b/xml/System.Data.SqlTypes/SqlTypeException.xml
index 402f04f176b..fbc3947d9ed 100644
--- a/xml/System.Data.SqlTypes/SqlTypeException.xml
+++ b/xml/System.Data.SqlTypes/SqlTypeException.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -213,10 +209,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="si" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1" />
diff --git a/xml/System.Data.SqlTypes/SqlXml.xml b/xml/System.Data.SqlTypes/SqlXml.xml
index 70afb8f4054..26583414fd2 100644
--- a/xml/System.Data.SqlTypes/SqlXml.xml
+++ b/xml/System.Data.SqlTypes/SqlXml.xml
@@ -65,10 +65,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -175,12 +171,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="value" Type="System.IO.Stream" />
       </Parameters>
@@ -227,12 +217,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="value" Type="System.Xml.XmlReader" />
       </Parameters>
diff --git a/xml/System.Data/Constraint.xml b/xml/System.Data/Constraint.xml
index ddf99319f1c..ffcdfe5a369 100644
--- a/xml/System.Data/Constraint.xml
+++ b/xml/System.Data/Constraint.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -170,10 +166,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataSet</ReturnType>
@@ -438,10 +430,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.Data.DataSysDescription("ConstraintTableDescr")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Data.DataSysDescription("ConstraintTableDescr")&gt;]</AttributeName>
diff --git a/xml/System.Data/ConstraintCollection.xml b/xml/System.Data/ConstraintCollection.xml
index bb4f62cfe5c..6a284fee433 100644
--- a/xml/System.Data/ConstraintCollection.xml
+++ b/xml/System.Data/ConstraintCollection.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.ConstraintsCollectionEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.ConstraintsCollectionEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))&gt;]</AttributeName>
@@ -717,14 +713,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.CollectionChangeEventHandler</ReturnType>
@@ -781,12 +769,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -903,12 +885,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -977,12 +953,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1128,10 +1098,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.Constraint</ReturnType>
diff --git a/xml/System.Data/ConstraintException.xml b/xml/System.Data/ConstraintException.xml
index 24f106e1ee5..77a8a259ec9 100644
--- a/xml/System.Data/ConstraintException.xml
+++ b/xml/System.Data/ConstraintException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -197,10 +193,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Data/DBConcurrencyException.xml b/xml/System.Data/DBConcurrencyException.xml
index 71f674412e5..c32f87cf982 100644
--- a/xml/System.Data/DBConcurrencyException.xml
+++ b/xml/System.Data/DBConcurrencyException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -308,12 +304,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -364,12 +354,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -437,10 +421,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Data/DataColumn.xml b/xml/System.Data/DataColumn.xml
index 4890f993b22..9b0ae8a4c39 100644
--- a/xml/System.Data/DataColumn.xml
+++ b/xml/System.Data/DataColumn.xml
@@ -64,10 +64,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.DataColumnEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.DataColumnEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))&gt;]</AttributeName>
@@ -219,12 +215,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="columnName" Type="System.String" />
       </Parameters>
@@ -366,10 +356,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types or types used in expressions may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types or types used in expressions may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="columnName" Type="System.String" />
@@ -450,10 +436,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types or types used in expressions may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types or types used in expressions may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="columnName" Type="System.String" />
@@ -2017,10 +1999,6 @@ The following example creates three columns in a <xref:System.Data.DataTable>. T
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.Data.DataSysDescription("DataColumnDataTableDescr")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Data.DataSysDescription("DataColumnDataTableDescr")&gt;]</AttributeName>
diff --git a/xml/System.Data/DataColumnChangeEventArgs.xml b/xml/System.Data/DataColumnChangeEventArgs.xml
index cff3638e077..d0b37c46e16 100644
--- a/xml/System.Data/DataColumnChangeEventArgs.xml
+++ b/xml/System.Data/DataColumnChangeEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Data.DataTable.ColumnChanging" /> event.</summary>
@@ -247,10 +243,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataRow</ReturnType>
diff --git a/xml/System.Data/DataColumnCollection.xml b/xml/System.Data/DataColumnCollection.xml
index cab97d84e8a..e738fafc8b5 100644
--- a/xml/System.Data/DataColumnCollection.xml
+++ b/xml/System.Data/DataColumnCollection.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.ColumnsCollectionEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.ColumnsCollectionEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))&gt;]</AttributeName>
@@ -588,12 +584,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -737,14 +727,6 @@ Another column's expression depends on this column. </exception>
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.CollectionChangeEventHandler</ReturnType>
@@ -922,12 +904,6 @@ Another column's expression depends on this column. </exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -988,12 +964,6 @@ Another column's expression depends on this column. </exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data/DataException.xml b/xml/System.Data/DataException.xml
index 702beeec517..f1c6af4259f 100644
--- a/xml/System.Data/DataException.xml
+++ b/xml/System.Data/DataException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -187,10 +183,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Data/DataReaderExtensions.xml b/xml/System.Data/DataReaderExtensions.xml
index 6d7d168ce97..e66213e595c 100644
--- a/xml/System.Data/DataReaderExtensions.xml
+++ b/xml/System.Data/DataReaderExtensions.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides extension methods for <see cref="T:System.Data.Common.DbDataReader" />.</summary>
diff --git a/xml/System.Data/DataRelation.xml b/xml/System.Data/DataRelation.xml
index 362587a6aa2..035a6002cb5 100644
--- a/xml/System.Data/DataRelation.xml
+++ b/xml/System.Data/DataRelation.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.DataRelationEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.DataRelationEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))&gt;]</AttributeName>
@@ -448,10 +444,6 @@
           <AttributeName Language="C#">[System.ComponentModel.Browsable(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.Browsable(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="relationName" Type="System.String">
@@ -536,10 +528,6 @@
           <AttributeName Language="C#">[System.ComponentModel.Browsable(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.Browsable(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="relationName" Type="System.String" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">
@@ -735,10 +723,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.ForeignKeyConstraint</ReturnType>
@@ -862,10 +846,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataSet</ReturnType>
@@ -1150,10 +1130,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.UniqueConstraint</ReturnType>
diff --git a/xml/System.Data/DataRelationCollection.xml b/xml/System.Data/DataRelationCollection.xml
index 445498b011b..3dd08767d67 100644
--- a/xml/System.Data/DataRelationCollection.xml
+++ b/xml/System.Data/DataRelationCollection.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.DataRelationCollectionEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.DataRelationCollectionEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))&gt;]</AttributeName>
@@ -745,12 +741,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -846,14 +836,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.CollectionChangeEventHandler</ReturnType>
@@ -897,12 +879,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1050,12 +1026,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1103,12 +1073,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1220,10 +1184,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataRelation</ReturnType>
diff --git a/xml/System.Data/DataRow.xml b/xml/System.Data/DataRow.xml
index 7b0a2503b35..3c8c04a059f 100644
--- a/xml/System.Data/DataRow.xml
+++ b/xml/System.Data/DataRow.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -1189,12 +1185,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataRow</ReturnType>
       </ReturnValue>
@@ -1270,12 +1260,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataRow</ReturnType>
       </ReturnValue>
@@ -1341,12 +1325,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataRow</ReturnType>
       </ReturnValue>
@@ -1428,12 +1406,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataRow</ReturnType>
       </ReturnValue>
@@ -2988,12 +2960,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3270,12 +3236,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3320,12 +3280,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data/DataRowChangeEventArgs.xml b/xml/System.Data/DataRowChangeEventArgs.xml
index 91bb6521694..ccb661812a0 100644
--- a/xml/System.Data/DataRowChangeEventArgs.xml
+++ b/xml/System.Data/DataRowChangeEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Data.DataTable.RowChanged" />, <see cref="E:System.Data.DataTable.RowChanging" />, <see cref="M:System.Data.DataTable.OnRowDeleting(System.Data.DataRowChangeEventArgs)" />, and <see cref="M:System.Data.DataTable.OnRowDeleted(System.Data.DataRowChangeEventArgs)" /> events.</summary>
diff --git a/xml/System.Data/DataRowCollection.xml b/xml/System.Data/DataRowCollection.xml
index 8b9057e079a..5785f593b7e 100644
--- a/xml/System.Data/DataRowCollection.xml
+++ b/xml/System.Data/DataRowCollection.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -336,12 +332,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -627,12 +617,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataRow</ReturnType>
       </ReturnValue>
@@ -697,12 +681,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataRow</ReturnType>
       </ReturnValue>
@@ -814,12 +792,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data/DataRowComparer.xml b/xml/System.Data/DataRowComparer.xml
index adf64b6e9c9..48a4772a21a 100644
--- a/xml/System.Data/DataRowComparer.xml
+++ b/xml/System.Data/DataRowComparer.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Returns a singleton instance of the <see cref="T:System.Data.DataRowComparer`1" /> class.</summary>
diff --git a/xml/System.Data/DataRowComparer`1.xml b/xml/System.Data/DataRowComparer`1.xml
index d448802155b..8c5aa53584a 100644
--- a/xml/System.Data/DataRowComparer`1.xml
+++ b/xml/System.Data/DataRowComparer`1.xml
@@ -64,10 +64,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TRow">The type of objects to be compared, typically <see cref="T:System.Data.DataRow" />.</typeparam>
@@ -172,12 +168,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data/DataRowExtensions.xml b/xml/System.Data/DataRowExtensions.xml
index 5d47be4bdd6..d288c1ebb5b 100644
--- a/xml/System.Data/DataRowExtensions.xml
+++ b/xml/System.Data/DataRowExtensions.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the extension methods to the <see cref="T:System.Data.DataRow" /> class. This is a static class.</summary>
@@ -169,12 +165,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -381,12 +371,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -613,12 +597,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data/DataRowView.xml b/xml/System.Data/DataRowView.xml
index 1f09440e68f..d0d3c3ae4dc 100644
--- a/xml/System.Data/DataRowView.xml
+++ b/xml/System.Data/DataRowView.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a customized view of a <see cref="T:System.Data.DataRow" />.</summary>
@@ -618,12 +614,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -942,14 +932,6 @@ The <see cref="P:System.Data.DataRowView.DataView" /> doesn't allow edits and <s
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyChangedEventHandler</ReturnType>
diff --git a/xml/System.Data/DataSet.xml b/xml/System.Data/DataSet.xml
index 6354de4c077..52bf645b3ac 100644
--- a/xml/System.Data/DataSet.xml
+++ b/xml/System.Data/DataSet.xml
@@ -94,10 +94,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Designer("Microsoft.VSDesigner.Data.VS.DataSetDesigner, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Designer("Microsoft.VSDesigner.Data.VS.DataSetDesigner, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")&gt;]</AttributeName>
@@ -1387,12 +1383,6 @@ If these classes have been subclassed, the copy will also be of the same subclas
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataSet</ReturnType>
       </ReturnValue>
@@ -1452,12 +1442,6 @@ If these classes have been subclassed, the copy will also be of the same subclas
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataSet</ReturnType>
       </ReturnValue>
@@ -1631,12 +1615,6 @@ If these classes have been subclassed, the copy will also be of the same subclas
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchema</ReturnType>
       </ReturnValue>
@@ -2397,10 +2375,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -2461,10 +2435,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -2587,10 +2557,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -2653,14 +2619,6 @@ class Program {
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -3761,14 +3719,6 @@ class Program {
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.Data.DataSysDescription("DataSetMergeFailedDescr")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Data.DataSysDescription("DataSetMergeFailedDescr")&gt;]</AttributeName>
@@ -4197,10 +4147,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.XmlReadMode</ReturnType>
@@ -4298,10 +4244,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.XmlReadMode</ReturnType>
@@ -4493,10 +4435,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.XmlReadMode</ReturnType>
@@ -4593,10 +4531,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.XmlReadMode</ReturnType>
@@ -4688,10 +4622,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.XmlReadMode</ReturnType>
@@ -4869,10 +4799,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.XmlReadMode</ReturnType>
@@ -4972,10 +4898,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5054,10 +4976,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5211,10 +5129,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5741,14 +5655,6 @@ class Program {
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.ISite</ReturnType>
@@ -6173,10 +6079,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -6248,10 +6150,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -6379,10 +6277,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -6446,10 +6340,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -6515,10 +6405,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -6666,10 +6552,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -6754,10 +6636,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -6830,10 +6708,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -6975,10 +6849,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Data/DataSysDescriptionAttribute.xml b/xml/System.Data/DataSysDescriptionAttribute.xml
index 8acf42eff5a..eb7d9983bf7 100644
--- a/xml/System.Data/DataSysDescriptionAttribute.xml
+++ b/xml/System.Data/DataSysDescriptionAttribute.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
       <AttributeName Language="C#">[System.Obsolete("DataSysDescriptionAttribute has been deprecated.  http://go.microsoft.com/fwlink/?linkid=14202", false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("DataSysDescriptionAttribute has been deprecated.  http://go.microsoft.com/fwlink/?linkid=14202", false)&gt;]</AttributeName>
diff --git a/xml/System.Data/DataTable.xml b/xml/System.Data/DataTable.xml
index 1445eac07c0..d7650b6cb10 100644
--- a/xml/System.Data/DataTable.xml
+++ b/xml/System.Data/DataTable.xml
@@ -105,10 +105,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.DataTableEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.DataTableEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))&gt;]</AttributeName>
@@ -241,12 +237,6 @@ The following example creates two <xref:System.Data.DataTable> objects and one <
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="tableName" Type="System.String" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1" />
       </Parameters>
@@ -363,12 +353,6 @@ The following example creates two <xref:System.Data.DataTable> objects and one <
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="tableName" Type="System.String" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1" />
         <Parameter Name="tableNamespace" Type="System.String" Index="1" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1" />
@@ -1334,14 +1318,6 @@ class Program {
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.Data.DataSysDescription("DataTableColumnChangedDescr")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Data.DataSysDescription("DataTableColumnChangedDescr")&gt;]</AttributeName>
@@ -1407,14 +1383,6 @@ class Program {
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.Data.DataSysDescription("DataTableColumnChangingDescr")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Data.DataSysDescription("DataTableColumnChangingDescr")&gt;]</AttributeName>
@@ -1545,10 +1513,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members of types used in the filter or expression might be trimmed.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members of types used in the filter or expression might be trimmed.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1883,10 +1847,6 @@ class Program {
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.Data.DataSysDescription("DataTableDataSetDescr")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Data.DataSysDescription("DataTableDataSetDescr")&gt;]</AttributeName>
@@ -2291,12 +2251,6 @@ class Program {
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTable</ReturnType>
       </ReturnValue>
@@ -2354,12 +2308,6 @@ class Program {
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTable</ReturnType>
       </ReturnValue>
@@ -2638,10 +2586,6 @@ class Program {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchema</ReturnType>
@@ -2757,12 +2701,6 @@ class Program {
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2829,14 +2767,6 @@ class Program {
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -4895,10 +4825,6 @@ Not present)|Current = \<Incoming><br /><br /> Original = \<Not available><br />
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.XmlReadMode</ReturnType>
@@ -4979,10 +4905,6 @@ Not present)|Current = \<Incoming><br /><br /> Original = \<Not available><br />
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.XmlReadMode</ReturnType>
@@ -5160,10 +5082,6 @@ public class A {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.XmlReadMode</ReturnType>
@@ -5270,10 +5188,6 @@ public class A {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5350,10 +5264,6 @@ public class A {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5505,10 +5415,6 @@ public class A {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5586,10 +5492,6 @@ public class A {
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5786,14 +5688,6 @@ public class A {
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.Data.DataSysDescription("DataTableRowChangedDescr")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Data.DataSysDescription("DataTableRowChangedDescr")&gt;]</AttributeName>
@@ -5858,14 +5752,6 @@ public class A {
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.Data.DataSysDescription("DataTableRowChangingDescr")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Data.DataSysDescription("DataTableRowChangingDescr")&gt;]</AttributeName>
@@ -5930,14 +5816,6 @@ public class A {
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.Data.DataSysDescription("DataTableRowDeletedDescr")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Data.DataSysDescription("DataTableRowDeletedDescr")&gt;]</AttributeName>
@@ -6002,14 +5880,6 @@ public class A {
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.Data.DataSysDescription("DataTableRowDeletingDescr")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Data.DataSysDescription("DataTableRowDeletingDescr")&gt;]</AttributeName>
@@ -6294,10 +6164,6 @@ To ensure the proper sort order, specify sort criteria with <xref:System.Data.Da
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members of types used in the filter expression might be trimmed.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members of types used in the filter expression might be trimmed.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataRow[]</ReturnType>
@@ -6369,10 +6235,6 @@ To ensure the proper sort order, specify sort criteria with <xref:System.Data.Da
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members of types used in the filter expression might be trimmed.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members of types used in the filter expression might be trimmed.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataRow[]</ReturnType>
@@ -6453,14 +6315,6 @@ To ensure the proper sort order, specify sort criteria with <xref:System.Data.Da
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.ISite</ReturnType>
@@ -6805,14 +6659,6 @@ To ensure the proper sort order, specify sort criteria with <xref:System.Data.Da
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTableClearEventHandler</ReturnType>
@@ -6867,14 +6713,6 @@ To ensure the proper sort order, specify sort criteria with <xref:System.Data.Da
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTableClearEventHandler</ReturnType>
@@ -7004,14 +6842,6 @@ To ensure the proper sort order, specify sort criteria with <xref:System.Data.Da
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTableNewRowEventHandler</ReturnType>
@@ -7296,10 +7126,6 @@ sdata:PrimaryKey="true">
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -7362,10 +7188,6 @@ sdata:PrimaryKey="true">
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -7489,10 +7311,6 @@ sdata:PrimaryKey="true">
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -7555,10 +7373,6 @@ sdata:PrimaryKey="true">
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -7627,10 +7441,6 @@ sdata:PrimaryKey="true">
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -7695,10 +7505,6 @@ sdata:PrimaryKey="true">
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -7771,10 +7577,6 @@ sdata:PrimaryKey="true">
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -7967,10 +7769,6 @@ sdata:PrimaryKey="true">
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -8037,10 +7835,6 @@ sdata:PrimaryKey="true">
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -8105,10 +7899,6 @@ sdata:PrimaryKey="true">
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -8181,10 +7971,6 @@ sdata:PrimaryKey="true">
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -8474,10 +8260,6 @@ sdata:PrimaryKey="true">
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -8653,10 +8435,6 @@ xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -8718,10 +8496,6 @@ xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -8843,10 +8617,6 @@ xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -8908,10 +8678,6 @@ xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -8977,10 +8743,6 @@ xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -9191,10 +8953,6 @@ xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Data/DataTableClearEventArgs.xml b/xml/System.Data/DataTableClearEventArgs.xml
index 6e350742052..99eb2241131 100644
--- a/xml/System.Data/DataTableClearEventArgs.xml
+++ b/xml/System.Data/DataTableClearEventArgs.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="M:System.Data.DataTable.Clear" /> method.</summary>
diff --git a/xml/System.Data/DataTableCollection.xml b/xml/System.Data/DataTableCollection.xml
index 7fc48074113..cae0cec5c76 100644
--- a/xml/System.Data/DataTableCollection.xml
+++ b/xml/System.Data/DataTableCollection.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.TablesCollectionEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.TablesCollectionEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))&gt;]</AttributeName>
@@ -154,12 +150,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTable</ReturnType>
       </ReturnValue>
@@ -226,12 +216,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -301,12 +285,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTable</ReturnType>
       </ReturnValue>
@@ -803,12 +781,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -879,12 +851,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1085,12 +1051,6 @@ This method returns -1 when two or more tables have the same name but different
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1170,10 +1130,6 @@ This method returns -1 when two or more tables have the same name but different
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTable</ReturnType>
@@ -1360,10 +1316,6 @@ This method returns -1 when two or more tables have the same name but different
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.ArrayList</ReturnType>
@@ -1475,12 +1427,6 @@ This method returns -1 when two or more tables have the same name but different
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1549,12 +1495,6 @@ This method returns -1 when two or more tables have the same name but different
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1617,12 +1557,6 @@ This method returns -1 when two or more tables have the same name but different
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data/DataTableExtensions.xml b/xml/System.Data/DataTableExtensions.xml
index 6366f4e9a3e..c91e58063f5 100644
--- a/xml/System.Data/DataTableExtensions.xml
+++ b/xml/System.Data/DataTableExtensions.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the extension methods to the <see cref="T:System.Data.DataTable" /> class. <see cref="T:System.Data.DataTableExtensions" /> is a static class.</summary>
diff --git a/xml/System.Data/DataTableNewRowEventArgs.xml b/xml/System.Data/DataTableNewRowEventArgs.xml
index 4c5dd53d26a..c9f776f365a 100644
--- a/xml/System.Data/DataTableNewRowEventArgs.xml
+++ b/xml/System.Data/DataTableNewRowEventArgs.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="M:System.Data.DataTable.NewRow" /> method.</summary>
diff --git a/xml/System.Data/DataTableReader.xml b/xml/System.Data/DataTableReader.xml
index 855957830bc..8fa99164f5d 100644
--- a/xml/System.Data/DataTableReader.xml
+++ b/xml/System.Data/DataTableReader.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Data.DataTableReader" /> obtains the contents of one or more <see cref="T:System.Data.DataTable" /> objects in the form of one or more read-only, forward-only result sets.</summary>
@@ -473,12 +469,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
@@ -619,12 +609,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data/DataView.xml b/xml/System.Data/DataView.xml
index 654066160ab..7e7cc87788f 100644
--- a/xml/System.Data/DataView.xml
+++ b/xml/System.Data/DataView.xml
@@ -97,10 +97,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Designer("Microsoft.VSDesigner.Data.VS.DataViewDesigner, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Designer("Microsoft.VSDesigner.Data.VS.DataViewDesigner, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")&gt;]</AttributeName>
@@ -373,12 +369,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataRowView</ReturnType>
       </ReturnValue>
@@ -782,12 +772,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -837,12 +821,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1343,12 +1321,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataRowView[]</ReturnType>
       </ReturnValue>
@@ -1403,12 +1375,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataRowView[]</ReturnType>
       </ReturnValue>
@@ -1465,12 +1431,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IEnumerator</ReturnType>
       </ReturnValue>
@@ -1513,12 +1473,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1725,10 +1679,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataRowView</ReturnType>
@@ -1835,12 +1785,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2141,14 +2085,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.Data.DataSysDescription("DataViewSortDescr")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Data.DataSysDescription("DataViewSortDescr")&gt;]</AttributeName>
@@ -4132,12 +4068,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTable</ReturnType>
       </ReturnValue>
@@ -4216,12 +4146,6 @@ New table name: NewTable
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTable</ReturnType>
       </ReturnValue>
@@ -4309,12 +4233,6 @@ New table name: FilteredTable
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTable</ReturnType>
       </ReturnValue>
@@ -4413,12 +4331,6 @@ New table name: NewTable
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTable</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data/DataViewManager.xml b/xml/System.Data/DataViewManager.xml
index de40b7f2bbb..57fad31e519 100644
--- a/xml/System.Data/DataViewManager.xml
+++ b/xml/System.Data/DataViewManager.xml
@@ -68,10 +68,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Designer("Microsoft.VSDesigner.Data.VS.DataViewManagerDesigner, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Designer("Microsoft.VSDesigner.Data.VS.DataViewManagerDesigner, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")&gt;]</AttributeName>
@@ -168,12 +164,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="dataSet" Type="System.Data.DataSet" />
       </Parameters>
@@ -270,14 +260,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.Data.DataSysDescription("DataViewManagerDataSetDescr")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Data.DataSysDescription("DataViewManagerDataSetDescr")&gt;]</AttributeName>
@@ -438,14 +420,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.ListChangedEventHandler</ReturnType>
diff --git a/xml/System.Data/DataViewSetting.xml b/xml/System.Data/DataViewSetting.xml
index 0c57c36ed02..3023f2ee0ad 100644
--- a/xml/System.Data/DataViewSetting.xml
+++ b/xml/System.Data/DataViewSetting.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -146,10 +142,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataViewManager</ReturnType>
@@ -341,10 +333,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTable</ReturnType>
diff --git a/xml/System.Data/DataViewSettingCollection.xml b/xml/System.Data/DataViewSettingCollection.xml
index 55ef74aceed..8e8e79dac4e 100644
--- a/xml/System.Data/DataViewSettingCollection.xml
+++ b/xml/System.Data/DataViewSettingCollection.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.DataViewSettingsCollectionEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.DataViewSettingsCollectionEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))&gt;]</AttributeName>
@@ -483,14 +479,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataViewSetting</ReturnType>
diff --git a/xml/System.Data/DeletedRowInaccessibleException.xml b/xml/System.Data/DeletedRowInaccessibleException.xml
index d1d02fb98af..eb810bd23a7 100644
--- a/xml/System.Data/DeletedRowInaccessibleException.xml
+++ b/xml/System.Data/DeletedRowInaccessibleException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -236,10 +232,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Data/DuplicateNameException.xml b/xml/System.Data/DuplicateNameException.xml
index 62b21ee841f..bcca31e65ee 100644
--- a/xml/System.Data/DuplicateNameException.xml
+++ b/xml/System.Data/DuplicateNameException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -193,10 +189,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Data/EnumerableRowCollectionExtensions.xml b/xml/System.Data/EnumerableRowCollectionExtensions.xml
index fd7fe8b055b..c9754231167 100644
--- a/xml/System.Data/EnumerableRowCollectionExtensions.xml
+++ b/xml/System.Data/EnumerableRowCollectionExtensions.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains the extension methods for the data row collection classes.</summary>
diff --git a/xml/System.Data/EnumerableRowCollection`1.xml b/xml/System.Data/EnumerableRowCollection`1.xml
index e42e63bc245..62ff7d0959d 100644
--- a/xml/System.Data/EnumerableRowCollection`1.xml
+++ b/xml/System.Data/EnumerableRowCollection`1.xml
@@ -109,12 +109,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IEnumerator&lt;TRow&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data/EvaluateException.xml b/xml/System.Data/EvaluateException.xml
index 611294fd187..8407597429f 100644
--- a/xml/System.Data/EvaluateException.xml
+++ b/xml/System.Data/EvaluateException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -186,10 +182,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Data/FillErrorEventArgs.xml b/xml/System.Data/FillErrorEventArgs.xml
index 362f039a9dd..3ba778caf5d 100644
--- a/xml/System.Data/FillErrorEventArgs.xml
+++ b/xml/System.Data/FillErrorEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Data.Common.DataAdapter.FillError" /> event of a <see cref="T:System.Data.Common.DbDataAdapter" />.</summary>
diff --git a/xml/System.Data/ForeignKeyConstraint.xml b/xml/System.Data/ForeignKeyConstraint.xml
index 5503025f9a4..bb79750fdd3 100644
--- a/xml/System.Data/ForeignKeyConstraint.xml
+++ b/xml/System.Data/ForeignKeyConstraint.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.ForeignKeyConstraintEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.ForeignKeyConstraintEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))&gt;]</AttributeName>
@@ -481,10 +477,6 @@
           <AttributeName Language="C#">[System.ComponentModel.Browsable(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.Browsable(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="constraintName" Type="System.String" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1" />
@@ -757,12 +749,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -985,10 +971,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.Data.DataSysDescription("ConstraintTableDescr")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Data.DataSysDescription("ConstraintTableDescr")&gt;]</AttributeName>
diff --git a/xml/System.Data/IColumnMapping.xml b/xml/System.Data/IColumnMapping.xml
index 09bcca43457..22561159c79 100644
--- a/xml/System.Data/IColumnMapping.xml
+++ b/xml/System.Data/IColumnMapping.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Data.Common" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Associates a data source column with a <see cref="T:System.Data.DataSet" /> column, and is implemented by the <see cref="T:System.Data.Common.DataColumnMapping" /> class, which is used in common by .NET data providers.</summary>
     <remarks>
diff --git a/xml/System.Data/IColumnMappingCollection.xml b/xml/System.Data/IColumnMappingCollection.xml
index 66b07db92e2..551e188775f 100644
--- a/xml/System.Data/IColumnMappingCollection.xml
+++ b/xml/System.Data/IColumnMappingCollection.xml
@@ -48,12 +48,6 @@
       <InterfaceName>System.Collections.IList</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Contains a collection of DataColumnMapping objects, and is implemented by the <see cref="T:System.Data.Common.DataColumnMappingCollection" />, which is used in common by .NET data providers.</summary>
     <remarks>
@@ -169,12 +163,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -265,12 +253,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data/IDataAdapter.xml b/xml/System.Data/IDataAdapter.xml
index 48cdca34406..f4be0b0e650 100644
--- a/xml/System.Data/IDataAdapter.xml
+++ b/xml/System.Data/IDataAdapter.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Data.Common" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Allows an object to implement a DataAdapter, and represents a set of methods and mapping action-related properties that are used to fill and update a <see cref="T:System.Data.DataSet" /> and update a data source.  
   
diff --git a/xml/System.Data/IDataParameter.xml b/xml/System.Data/IDataParameter.xml
index 260b309c370..a63528057d3 100644
--- a/xml/System.Data/IDataParameter.xml
+++ b/xml/System.Data/IDataParameter.xml
@@ -38,12 +38,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Data.Common" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents a parameter to a Command object, and optionally, its mapping to <see cref="T:System.Data.DataSet" /> columns; and is implemented by .NET data providers that access data sources.</summary>
     <remarks>
@@ -478,14 +472,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Data/IDataParameterCollection.xml b/xml/System.Data/IDataParameterCollection.xml
index 0399fdf32c9..69f8fc75625 100644
--- a/xml/System.Data/IDataParameterCollection.xml
+++ b/xml/System.Data/IDataParameterCollection.xml
@@ -49,12 +49,6 @@
       <InterfaceName>System.Collections.IList</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Collects all parameters relevant to a Command object and their mappings to <see cref="T:System.Data.DataSet" /> columns, and is implemented by .NET data providers that access data sources.</summary>
     <remarks>
diff --git a/xml/System.Data/IDataReader.xml b/xml/System.Data/IDataReader.xml
index 56f7d41697d..253af13dd37 100644
--- a/xml/System.Data/IDataReader.xml
+++ b/xml/System.Data/IDataReader.xml
@@ -206,12 +206,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTable</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data/IDataRecord.xml b/xml/System.Data/IDataRecord.xml
index 472daff894c..5394b11b594 100644
--- a/xml/System.Data/IDataRecord.xml
+++ b/xml/System.Data/IDataRecord.xml
@@ -38,12 +38,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Data.Common" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides access to the column values within each row for a <see langword="DataReader" />, and is implemented by .NET data providers that access relational databases.</summary>
     <remarks>
@@ -287,12 +281,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
@@ -405,12 +393,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data/IDbCommand.xml b/xml/System.Data/IDbCommand.xml
index 10b47616805..196bcd696de 100644
--- a/xml/System.Data/IDbCommand.xml
+++ b/xml/System.Data/IDbCommand.xml
@@ -42,12 +42,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents an SQL statement that is executed while connected to a data source, and is implemented by .NET data providers that access relational databases.</summary>
     <remarks>
@@ -350,14 +344,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.IDbConnection</ReturnType>
@@ -627,12 +613,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -818,14 +798,6 @@ Int32 count = (int) ExecuteScalar();
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.IDbTransaction</ReturnType>
diff --git a/xml/System.Data/IDbConnection.xml b/xml/System.Data/IDbConnection.xml
index 5a51b1f9b3e..8066a3e725e 100644
--- a/xml/System.Data/IDbConnection.xml
+++ b/xml/System.Data/IDbConnection.xml
@@ -42,12 +42,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents an open connection to a data source, and is implemented by .NET data providers that access relational databases.</summary>
     <remarks>
diff --git a/xml/System.Data/IDbDataAdapter.xml b/xml/System.Data/IDbDataAdapter.xml
index 9f7d93cbfef..abcebd70cbb 100644
--- a/xml/System.Data/IDbDataAdapter.xml
+++ b/xml/System.Data/IDbDataAdapter.xml
@@ -41,12 +41,6 @@
       <InterfaceName>System.Data.IDataAdapter</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents a set of command-related properties that are used to fill the <see cref="T:System.Data.DataSet" /> and update a data source, and is implemented by .NET data providers that access relational databases.</summary>
     <remarks>
diff --git a/xml/System.Data/IDbTransaction.xml b/xml/System.Data/IDbTransaction.xml
index 8cbe7ceabb2..0a13f8db05a 100644
--- a/xml/System.Data/IDbTransaction.xml
+++ b/xml/System.Data/IDbTransaction.xml
@@ -42,12 +42,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents a transaction to be performed at a data source, and is implemented by .NET data providers that access relational databases.</summary>
     <remarks>
diff --git a/xml/System.Data/ITableMapping.xml b/xml/System.Data/ITableMapping.xml
index 43c0ef509e2..7c5d4002596 100644
--- a/xml/System.Data/ITableMapping.xml
+++ b/xml/System.Data/ITableMapping.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Data.Common" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Associates a source table with a table in a <see cref="T:System.Data.DataSet" />, and is implemented by the <see cref="T:System.Data.Common.DataTableMapping" /> class, which is used in common by .NET data providers.</summary>
     <remarks>
diff --git a/xml/System.Data/ITableMappingCollection.xml b/xml/System.Data/ITableMappingCollection.xml
index 62d4d47b150..7fed86dd956 100644
--- a/xml/System.Data/ITableMappingCollection.xml
+++ b/xml/System.Data/ITableMappingCollection.xml
@@ -48,12 +48,6 @@
       <InterfaceName>System.Collections.IList</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Contains a collection of TableMapping objects, and is implemented by the <see cref="T:System.Data.Common.DataTableMappingCollection" />, which is used in common by .NET data providers.</summary>
     <remarks>
@@ -169,12 +163,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -265,12 +253,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data/InRowChangingEventException.xml b/xml/System.Data/InRowChangingEventException.xml
index 412b77f82b7..150253c8fd1 100644
--- a/xml/System.Data/InRowChangingEventException.xml
+++ b/xml/System.Data/InRowChangingEventException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -186,10 +182,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Data/InternalDataCollectionBase.xml b/xml/System.Data/InternalDataCollectionBase.xml
index 0c1d17f7dd4..546d6486bf5 100644
--- a/xml/System.Data/InternalDataCollectionBase.xml
+++ b/xml/System.Data/InternalDataCollectionBase.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the base functionality for creating collections.</summary>
diff --git a/xml/System.Data/InvalidConstraintException.xml b/xml/System.Data/InvalidConstraintException.xml
index 53bc64a6229..b9d84370700 100644
--- a/xml/System.Data/InvalidConstraintException.xml
+++ b/xml/System.Data/InvalidConstraintException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -201,10 +197,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Data/InvalidExpressionException.xml b/xml/System.Data/InvalidExpressionException.xml
index c6569d3cbe8..8e8fcf5fe0a 100644
--- a/xml/System.Data/InvalidExpressionException.xml
+++ b/xml/System.Data/InvalidExpressionException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -193,10 +189,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Data/MergeFailedEventArgs.xml b/xml/System.Data/MergeFailedEventArgs.xml
index 191bb24621c..b8437ce27fb 100644
--- a/xml/System.Data/MergeFailedEventArgs.xml
+++ b/xml/System.Data/MergeFailedEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Occurs when a target and source <see langword="DataRow" /> have the same primary key value, and the <see cref="P:System.Data.DataSet.EnforceConstraints" /> property is set to true.</summary>
@@ -181,10 +177,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataTable</ReturnType>
diff --git a/xml/System.Data/MissingPrimaryKeyException.xml b/xml/System.Data/MissingPrimaryKeyException.xml
index c31bb4d9e47..4712975c061 100644
--- a/xml/System.Data/MissingPrimaryKeyException.xml
+++ b/xml/System.Data/MissingPrimaryKeyException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -197,10 +193,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Data/NoNullAllowedException.xml b/xml/System.Data/NoNullAllowedException.xml
index 2bcdda509ab..e545aa054f8 100644
--- a/xml/System.Data/NoNullAllowedException.xml
+++ b/xml/System.Data/NoNullAllowedException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -201,10 +197,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Data/OrderedEnumerableRowCollection`1.xml b/xml/System.Data/OrderedEnumerableRowCollection`1.xml
index c76c7dae78a..61b95251460 100644
--- a/xml/System.Data/OrderedEnumerableRowCollection`1.xml
+++ b/xml/System.Data/OrderedEnumerableRowCollection`1.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TRow">The type of objects in the source sequence, typically <see cref="T:System.Data.DataRow" />.</typeparam>
diff --git a/xml/System.Data/PropertyCollection.xml b/xml/System.Data/PropertyCollection.xml
index 27c8112fb92..60743875cce 100644
--- a/xml/System.Data/PropertyCollection.xml
+++ b/xml/System.Data/PropertyCollection.xml
@@ -175,10 +175,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1" />
@@ -223,12 +219,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Data/ReadOnlyException.xml b/xml/System.Data/ReadOnlyException.xml
index c1ab6f6673b..2149d747772 100644
--- a/xml/System.Data/ReadOnlyException.xml
+++ b/xml/System.Data/ReadOnlyException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -197,10 +193,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Data/RowNotInTableException.xml b/xml/System.Data/RowNotInTableException.xml
index e8d00ec7bef..7d1f872c082 100644
--- a/xml/System.Data/RowNotInTableException.xml
+++ b/xml/System.Data/RowNotInTableException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -213,10 +209,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Data/StrongTypingException.xml b/xml/System.Data/StrongTypingException.xml
index ed6e0e9a15f..9bd502f6683 100644
--- a/xml/System.Data/StrongTypingException.xml
+++ b/xml/System.Data/StrongTypingException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -206,10 +202,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Data/SyntaxErrorException.xml b/xml/System.Data/SyntaxErrorException.xml
index 884bcd9f9a9..aab934ca0e4 100644
--- a/xml/System.Data/SyntaxErrorException.xml
+++ b/xml/System.Data/SyntaxErrorException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -186,10 +182,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Data/TypedTableBaseExtensions.xml b/xml/System.Data/TypedTableBaseExtensions.xml
index 5e97eb10c8a..514dae9c690 100644
--- a/xml/System.Data/TypedTableBaseExtensions.xml
+++ b/xml/System.Data/TypedTableBaseExtensions.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains the extension methods for the <see cref="T:System.Data.TypedTableBase`1" /> class.</summary>
diff --git a/xml/System.Data/TypedTableBase`1.xml b/xml/System.Data/TypedTableBase`1.xml
index 37535fad769..c772cbca477 100644
--- a/xml/System.Data/TypedTableBase`1.xml
+++ b/xml/System.Data/TypedTableBase`1.xml
@@ -68,10 +68,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Data/UniqueConstraint.xml b/xml/System.Data/UniqueConstraint.xml
index 28367398644..32478861c43 100644
--- a/xml/System.Data/UniqueConstraint.xml
+++ b/xml/System.Data/UniqueConstraint.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.UniqueConstraintEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("Microsoft.VSDesigner.Data.Design.UniqueConstraintEditor, Microsoft.VSDesigner, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))&gt;]</AttributeName>
@@ -558,10 +554,6 @@
           <AttributeName Language="C#">[System.ComponentModel.Browsable(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.Browsable(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" />
@@ -684,12 +676,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -871,10 +857,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.Data.DataSysDescription("ConstraintTableDescr")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Data.DataSysDescription("ConstraintTableDescr")&gt;]</AttributeName>
diff --git a/xml/System.Data/VersionNotFoundException.xml b/xml/System.Data/VersionNotFoundException.xml
index 5b0b799de96..c4f856d4344 100644
--- a/xml/System.Data/VersionNotFoundException.xml
+++ b/xml/System.Data/VersionNotFoundException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -196,10 +192,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Diagnostics.CodeAnalysis/ConstantExpectedAttribute.xml b/xml/System.Diagnostics.CodeAnalysis/ConstantExpectedAttribute.xml
index 7023edc3bd2..f62a53d9603 100644
--- a/xml/System.Diagnostics.CodeAnalysis/ConstantExpectedAttribute.xml
+++ b/xml/System.Diagnostics.CodeAnalysis/ConstantExpectedAttribute.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates that the specified method parameter expects a constant.</summary>
diff --git a/xml/System.Diagnostics.CodeAnalysis/DynamicDependencyAttribute.xml b/xml/System.Diagnostics.CodeAnalysis/DynamicDependencyAttribute.xml
index cc3e43dbc45..62800aed094 100644
--- a/xml/System.Diagnostics.CodeAnalysis/DynamicDependencyAttribute.xml
+++ b/xml/System.Diagnostics.CodeAnalysis/DynamicDependencyAttribute.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>States a dependency that one member has on another.</summary>
@@ -60,12 +56,6 @@ This attribute can be used to inform tooling of a dependency that is otherwise n
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="memberSignature" Type="System.String" />
       </Parameters>
@@ -91,12 +81,6 @@ This attribute can be used to inform tooling of a dependency that is otherwise n
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="memberTypes" Type="System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes" />
         <Parameter Name="type" Type="System.Type" />
@@ -124,12 +108,6 @@ This attribute can be used to inform tooling of a dependency that is otherwise n
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="memberSignature" Type="System.String" />
         <Parameter Name="type" Type="System.Type" />
@@ -157,12 +135,6 @@ This attribute can be used to inform tooling of a dependency that is otherwise n
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="memberTypes" Type="System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes" />
         <Parameter Name="typeName" Type="System.String" />
@@ -192,12 +164,6 @@ This attribute can be used to inform tooling of a dependency that is otherwise n
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="memberSignature" Type="System.String" />
         <Parameter Name="typeName" Type="System.String" />
diff --git a/xml/System.Diagnostics.CodeAnalysis/ExcludeFromCodeCoverageAttribute.xml b/xml/System.Diagnostics.CodeAnalysis/ExcludeFromCodeCoverageAttribute.xml
index 495d05fa84c..8df63c08cab 100644
--- a/xml/System.Diagnostics.CodeAnalysis/ExcludeFromCodeCoverageAttribute.xml
+++ b/xml/System.Diagnostics.CodeAnalysis/ExcludeFromCodeCoverageAttribute.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Constructor | System.AttributeTargets.Event | System.AttributeTargets.Method | System.AttributeTargets.Property | System.AttributeTargets.Struct, AllowMultiple=false, Inherited=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Constructor | System.AttributeTargets.Event | System.AttributeTargets.Method | System.AttributeTargets.Property | System.AttributeTargets.Struct, AllowMultiple=false, Inherited=false)&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics.CodeAnalysis/ExperimentalAttribute.xml b/xml/System.Diagnostics.CodeAnalysis/ExperimentalAttribute.xml
index f49c8cc8d23..80976e5dd96 100644
--- a/xml/System.Diagnostics.CodeAnalysis/ExperimentalAttribute.xml
+++ b/xml/System.Diagnostics.CodeAnalysis/ExperimentalAttribute.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates that an API is experimental and it may change in the future.</summary>
@@ -113,14 +109,6 @@ the warnings or errors, if needed.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Diagnostics.CodeAnalysis/FeatureGuardAttribute.xml b/xml/System.Diagnostics.CodeAnalysis/FeatureGuardAttribute.xml
index aa4efe29a6f..ec197c4db0c 100644
--- a/xml/System.Diagnostics.CodeAnalysis/FeatureGuardAttribute.xml
+++ b/xml/System.Diagnostics.CodeAnalysis/FeatureGuardAttribute.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/System.Diagnostics.CodeAnalysis/FeatureSwitchDefinitionAttribute.xml b/xml/System.Diagnostics.CodeAnalysis/FeatureSwitchDefinitionAttribute.xml
index c8f6111e6c8..d0200432a0a 100644
--- a/xml/System.Diagnostics.CodeAnalysis/FeatureSwitchDefinitionAttribute.xml
+++ b/xml/System.Diagnostics.CodeAnalysis/FeatureSwitchDefinitionAttribute.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/System.Diagnostics.CodeAnalysis/MemberNotNullAttribute.xml b/xml/System.Diagnostics.CodeAnalysis/MemberNotNullAttribute.xml
index 8e87d2ae288..ea2a80a8852 100644
--- a/xml/System.Diagnostics.CodeAnalysis/MemberNotNullAttribute.xml
+++ b/xml/System.Diagnostics.CodeAnalysis/MemberNotNullAttribute.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that the method or property will ensure that the listed field and property members have values that aren't <see langword="null" />.</summary>
diff --git a/xml/System.Diagnostics.CodeAnalysis/MemberNotNullWhenAttribute.xml b/xml/System.Diagnostics.CodeAnalysis/MemberNotNullWhenAttribute.xml
index 07175b8c145..1b780aa14b6 100644
--- a/xml/System.Diagnostics.CodeAnalysis/MemberNotNullWhenAttribute.xml
+++ b/xml/System.Diagnostics.CodeAnalysis/MemberNotNullWhenAttribute.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that the method or property will ensure that the listed field and property members have non-null values when returning with the specified return value condition.</summary>
diff --git a/xml/System.Diagnostics.CodeAnalysis/NotNullIfNotNullAttribute.xml b/xml/System.Diagnostics.CodeAnalysis/NotNullIfNotNullAttribute.xml
index b8f64ce493f..05d14870a25 100644
--- a/xml/System.Diagnostics.CodeAnalysis/NotNullIfNotNullAttribute.xml
+++ b/xml/System.Diagnostics.CodeAnalysis/NotNullIfNotNullAttribute.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that the output will be non-null if the named parameter is non-null.</summary>
diff --git a/xml/System.Diagnostics.CodeAnalysis/RequiresAssemblyFilesAttribute.xml b/xml/System.Diagnostics.CodeAnalysis/RequiresAssemblyFilesAttribute.xml
index b33bf02814b..ee113fa3124 100644
--- a/xml/System.Diagnostics.CodeAnalysis/RequiresAssemblyFilesAttribute.xml
+++ b/xml/System.Diagnostics.CodeAnalysis/RequiresAssemblyFilesAttribute.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates that the specified member requires assembly files to be on disk.</summary>
@@ -70,12 +66,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
       </Parameters>
diff --git a/xml/System.Diagnostics.CodeAnalysis/RequiresDynamicCodeAttribute.xml b/xml/System.Diagnostics.CodeAnalysis/RequiresDynamicCodeAttribute.xml
index 096455be0fb..7d9752946b0 100644
--- a/xml/System.Diagnostics.CodeAnalysis/RequiresDynamicCodeAttribute.xml
+++ b/xml/System.Diagnostics.CodeAnalysis/RequiresDynamicCodeAttribute.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates that the specified method requires the ability to generate new code at runtime, for example through <see cref="N:System.Reflection" />.</summary>
@@ -109,14 +105,6 @@ For more information, see [Introduction to AOT warnings](/dotnet/core/deploying/
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Diagnostics.CodeAnalysis/RequiresUnreferencedCodeAttribute.xml b/xml/System.Diagnostics.CodeAnalysis/RequiresUnreferencedCodeAttribute.xml
index dd3f55f1f03..0fe8ee7de48 100644
--- a/xml/System.Diagnostics.CodeAnalysis/RequiresUnreferencedCodeAttribute.xml
+++ b/xml/System.Diagnostics.CodeAnalysis/RequiresUnreferencedCodeAttribute.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates that the specified method requires dynamic access to code that is not referenced statically, for example, through <see cref="N:System.Reflection" />.</summary>
@@ -121,14 +117,6 @@ This attribute allows tools to understand which methods are unsafe to call when
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Diagnostics.CodeAnalysis/StringSyntaxAttribute.xml b/xml/System.Diagnostics.CodeAnalysis/StringSyntaxAttribute.xml
index f79906fe66a..3825bcdd5bd 100644
--- a/xml/System.Diagnostics.CodeAnalysis/StringSyntaxAttribute.xml
+++ b/xml/System.Diagnostics.CodeAnalysis/StringSyntaxAttribute.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the syntax used in a string.</summary>
diff --git a/xml/System.Diagnostics.CodeAnalysis/SuppressMessageAttribute.xml b/xml/System.Diagnostics.CodeAnalysis/SuppressMessageAttribute.xml
index fc95fcd4b7a..90d5297ebe4 100644
--- a/xml/System.Diagnostics.CodeAnalysis/SuppressMessageAttribute.xml
+++ b/xml/System.Diagnostics.CodeAnalysis/SuppressMessageAttribute.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Suppresses reporting of a specific code analysis rule violation, allowing multiple suppressions on a single code artifact. Does not apply to compiler diagnostics.</summary>
@@ -123,12 +119,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="category" Type="System.String" />
         <Parameter Name="checkId" Type="System.String" />
@@ -197,10 +187,6 @@ The following code example shows the use of the <xref:System.Diagnostics.CodeAna
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -264,10 +250,6 @@ The <xref:System.Diagnostics.CodeAnalysis.SuppressMessageAttribute.Category%2A>
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Diagnostics.CodeAnalysis/UnconditionalSuppressMessageAttribute.xml b/xml/System.Diagnostics.CodeAnalysis/UnconditionalSuppressMessageAttribute.xml
index 7e597e437f8..8925e0917b5 100644
--- a/xml/System.Diagnostics.CodeAnalysis/UnconditionalSuppressMessageAttribute.xml
+++ b/xml/System.Diagnostics.CodeAnalysis/UnconditionalSuppressMessageAttribute.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Suppresses reporting of a specific rule violation, allowing multiple suppressions on a single code artifact.</summary>
@@ -63,12 +59,6 @@ For more information, see [Introduction to trim warnings](/dotnet/core/deploying
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="category" Type="System.String" />
         <Parameter Name="checkId" Type="System.String" />
@@ -101,10 +91,6 @@ For more information, see [Introduction to trim warnings](/dotnet/core/deploying
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -144,10 +130,6 @@ The <xref:System.Diagnostics.CodeAnalysis.UnconditionalSuppressMessageAttribute.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Diagnostics.Contracts/Contract.xml b/xml/System.Diagnostics.Contracts/Contract.xml
index 27b4b1d0962..d7cd7b57066 100644
--- a/xml/System.Diagnostics.Contracts/Contract.xml
+++ b/xml/System.Diagnostics.Contracts/Contract.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains static methods for representing program contracts such as preconditions, postconditions, and object invariants.</summary>
@@ -183,10 +179,6 @@
           <AttributeName Language="C#">[System.Diagnostics.Conditional("CONTRACTS_FULL")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("CONTRACTS_FULL")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -338,10 +330,6 @@
           <AttributeName Language="C#">[System.Diagnostics.Conditional("CONTRACTS_FULL")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("CONTRACTS_FULL")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -610,10 +598,6 @@
           <AttributeName Language="C#">[System.Diagnostics.Conditional("CONTRACTS_FULL")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("CONTRACTS_FULL")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -692,10 +676,6 @@
           <AttributeName Language="C#">[System.Diagnostics.Conditional("CONTRACTS_FULL")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("CONTRACTS_FULL")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -769,10 +749,6 @@
           <AttributeName Language="C#">[System.Diagnostics.Conditional("CONTRACTS_FULL")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("CONTRACTS_FULL")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -1214,10 +1190,6 @@
           <AttributeName Language="C#">[System.Diagnostics.Conditional("CONTRACTS_FULL")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("CONTRACTS_FULL")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -1434,10 +1406,6 @@
           <AttributeName Language="C#">[System.Diagnostics.Conditional("CONTRACTS_FULL")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("CONTRACTS_FULL")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -1499,10 +1467,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -1574,10 +1538,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics.Contracts/ContractClassAttribute.xml b/xml/System.Diagnostics.Contracts/ContractClassAttribute.xml
index 43daa752b4c..39d1da020df 100644
--- a/xml/System.Diagnostics.Contracts/ContractClassAttribute.xml
+++ b/xml/System.Diagnostics.Contracts/ContractClassAttribute.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that a separate type contains the code contracts for this type.</summary>
diff --git a/xml/System.Diagnostics.Contracts/ContractClassForAttribute.xml b/xml/System.Diagnostics.Contracts/ContractClassForAttribute.xml
index 9466edcac93..1e12cef173d 100644
--- a/xml/System.Diagnostics.Contracts/ContractClassForAttribute.xml
+++ b/xml/System.Diagnostics.Contracts/ContractClassForAttribute.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that a class is a contract for a type.</summary>
diff --git a/xml/System.Diagnostics.Contracts/ContractFailedEventArgs.xml b/xml/System.Diagnostics.Contracts/ContractFailedEventArgs.xml
index f5977cff3ea..ff236084371 100644
--- a/xml/System.Diagnostics.Contracts/ContractFailedEventArgs.xml
+++ b/xml/System.Diagnostics.Contracts/ContractFailedEventArgs.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods and data for the <see cref="E:System.Diagnostics.Contracts.Contract.ContractFailed" /> event.</summary>
diff --git a/xml/System.Diagnostics.Contracts/ContractOptionAttribute.xml b/xml/System.Diagnostics.Contracts/ContractOptionAttribute.xml
index 14b772c57f4..9f4d5ab4d18 100644
--- a/xml/System.Diagnostics.Contracts/ContractOptionAttribute.xml
+++ b/xml/System.Diagnostics.Contracts/ContractOptionAttribute.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Enables you to set contract and tool options at assembly, type, or method granularity.</summary>
@@ -375,10 +371,6 @@ class MyConcurrentList<T> : IList<T> {
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Diagnostics.Contracts/ContractPublicPropertyNameAttribute.xml b/xml/System.Diagnostics.Contracts/ContractPublicPropertyNameAttribute.xml
index ca2852b6505..87f36a88881 100644
--- a/xml/System.Diagnostics.Contracts/ContractPublicPropertyNameAttribute.xml
+++ b/xml/System.Diagnostics.Contracts/ContractPublicPropertyNameAttribute.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that a field can be used in method contracts when the field has less visibility than the method.</summary>
diff --git a/xml/System.Diagnostics.Metrics/IMeterFactory.xml b/xml/System.Diagnostics.Metrics/IMeterFactory.xml
index fa65605021c..3bb077d305f 100644
--- a/xml/System.Diagnostics.Metrics/IMeterFactory.xml
+++ b/xml/System.Diagnostics.Metrics/IMeterFactory.xml
@@ -41,12 +41,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.Metrics.Meter</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics.Metrics/Instrument.xml b/xml/System.Diagnostics.Metrics/Instrument.xml
index 0c63056d8c2..937809c6a2a 100644
--- a/xml/System.Diagnostics.Metrics/Instrument.xml
+++ b/xml/System.Diagnostics.Metrics/Instrument.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Base class of all metrics instrument classes</summary>
@@ -173,10 +169,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -343,10 +335,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Diagnostics.Metrics/Instrument`1.xml b/xml/System.Diagnostics.Metrics/Instrument`1.xml
index d50446b4269..9ce8cd4a5e3 100644
--- a/xml/System.Diagnostics.Metrics/Instrument`1.xml
+++ b/xml/System.Diagnostics.Metrics/Instrument`1.xml
@@ -57,12 +57,6 @@ This class supports only the following generic parameter types: <xref:System.Byt
         <AssemblyName>System.Diagnostics.DiagnosticSource</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="meter" Type="System.Diagnostics.Metrics.Meter" Index="0" FrameworkAlternate="net-8.0;net-9.0;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
         <Parameter Name="name" Type="System.String" Index="1" FrameworkAlternate="net-8.0;net-9.0;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
@@ -92,10 +86,6 @@ This class supports only the following generic parameter types: <xref:System.Byt
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="meter" Type="System.Diagnostics.Metrics.Meter" />
@@ -144,10 +134,6 @@ This class supports only the following generic parameter types: <xref:System.Byt
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="meter" Type="System.Diagnostics.Metrics.Meter" />
@@ -198,12 +184,6 @@ This class supports only the following generic parameter types: <xref:System.Byt
         <AssemblyName>System.Diagnostics.DiagnosticSource</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="meter" Type="System.Diagnostics.Metrics.Meter" Index="0" FrameworkAlternate="net-8.0;net-9.0;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
         <Parameter Name="name" Type="System.String" Index="1" FrameworkAlternate="net-8.0;net-9.0;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
diff --git a/xml/System.Diagnostics.Metrics/Meter.xml b/xml/System.Diagnostics.Metrics/Meter.xml
index d5fdef25a98..d9a9a5bd28b 100644
--- a/xml/System.Diagnostics.Metrics/Meter.xml
+++ b/xml/System.Diagnostics.Metrics/Meter.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Meter is the class responsible for creating and tracking the Instruments.</summary>
@@ -53,12 +49,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="options" Type="System.Diagnostics.Metrics.MeterOptions" />
       </Parameters>
@@ -81,12 +71,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" />
       </Parameters>
@@ -109,12 +93,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" />
         <Parameter Name="version" Type="System.String">
@@ -324,12 +302,6 @@ Counter is an instrument that supports non-negative increments. Example uses for
         <AssemblyName>System.Diagnostics.DiagnosticSource</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.Metrics.Gauge&lt;T&gt;</ReturnType>
         <Attributes>
@@ -450,12 +422,6 @@ Counter is an instrument that supports non-negative increments. Example uses for
         <AssemblyName>System.Diagnostics.DiagnosticSource</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.Metrics.Histogram&lt;T&gt;</ReturnType>
         <Attributes>
@@ -2133,10 +2099,6 @@ UpDownCounter is an Instrument which supports reporting positive or negative met
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Diagnostics.Metrics/MeterFactoryExtensions.xml b/xml/System.Diagnostics.Metrics/MeterFactoryExtensions.xml
index 548f34b44a3..04111d123b6 100644
--- a/xml/System.Diagnostics.Metrics/MeterFactoryExtensions.xml
+++ b/xml/System.Diagnostics.Metrics/MeterFactoryExtensions.xml
@@ -31,12 +31,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.Metrics.Meter</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics.Metrics/MeterListener.xml b/xml/System.Diagnostics.Metrics/MeterListener.xml
index 771e48fa7a7..f4e1b8b46be 100644
--- a/xml/System.Diagnostics.Metrics/MeterListener.xml
+++ b/xml/System.Diagnostics.Metrics/MeterListener.xml
@@ -56,12 +56,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -112,12 +106,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics.Metrics/MeterOptions.xml b/xml/System.Diagnostics.Metrics/MeterOptions.xml
index 6159a637f1d..a1e70bf48e3 100644
--- a/xml/System.Diagnostics.Metrics/MeterOptions.xml
+++ b/xml/System.Diagnostics.Metrics/MeterOptions.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The options for creating a <see cref="T:System.Diagnostics.Metrics.Meter" />.</summary>
@@ -42,12 +38,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" />
       </Parameters>
@@ -75,14 +65,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Diagnostics.Metrics/ObservableInstrument`1.xml b/xml/System.Diagnostics.Metrics/ObservableInstrument`1.xml
index af2a846af0e..35cbe511c8e 100644
--- a/xml/System.Diagnostics.Metrics/ObservableInstrument`1.xml
+++ b/xml/System.Diagnostics.Metrics/ObservableInstrument`1.xml
@@ -52,12 +52,6 @@ This class supports only the following generic parameter types: <xref:System.Byt
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="meter" Type="System.Diagnostics.Metrics.Meter" />
         <Parameter Name="name" Type="System.String" />
@@ -101,12 +95,6 @@ This class supports only the following generic parameter types: <xref:System.Byt
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="meter" Type="System.Diagnostics.Metrics.Meter" />
         <Parameter Name="name" Type="System.String" />
diff --git a/xml/System.Diagnostics.SymbolStore/ISymbolBinder.xml b/xml/System.Diagnostics.SymbolStore/ISymbolBinder.xml
index eaf37e03e69..bc3d1918749 100644
--- a/xml/System.Diagnostics.SymbolStore/ISymbolBinder.xml
+++ b/xml/System.Diagnostics.SymbolStore/ISymbolBinder.xml
@@ -38,10 +38,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics.SymbolStore/ISymbolBinder1.xml b/xml/System.Diagnostics.SymbolStore/ISymbolBinder1.xml
index cc2aa3494c3..a57c7bb8a28 100644
--- a/xml/System.Diagnostics.SymbolStore/ISymbolBinder1.xml
+++ b/xml/System.Diagnostics.SymbolStore/ISymbolBinder1.xml
@@ -37,10 +37,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics.SymbolStore/ISymbolDocument.xml b/xml/System.Diagnostics.SymbolStore/ISymbolDocument.xml
index b0a6b7fc941..ae0ddd95796 100644
--- a/xml/System.Diagnostics.SymbolStore/ISymbolDocument.xml
+++ b/xml/System.Diagnostics.SymbolStore/ISymbolDocument.xml
@@ -38,10 +38,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics.SymbolStore/ISymbolDocumentWriter.xml b/xml/System.Diagnostics.SymbolStore/ISymbolDocumentWriter.xml
index 9b4f71491df..4c746b77767 100644
--- a/xml/System.Diagnostics.SymbolStore/ISymbolDocumentWriter.xml
+++ b/xml/System.Diagnostics.SymbolStore/ISymbolDocumentWriter.xml
@@ -38,10 +38,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics.SymbolStore/ISymbolMethod.xml b/xml/System.Diagnostics.SymbolStore/ISymbolMethod.xml
index 9a33a7b49af..f8585825fad 100644
--- a/xml/System.Diagnostics.SymbolStore/ISymbolMethod.xml
+++ b/xml/System.Diagnostics.SymbolStore/ISymbolMethod.xml
@@ -38,10 +38,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -346,12 +342,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -422,12 +412,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics.SymbolStore/ISymbolNamespace.xml b/xml/System.Diagnostics.SymbolStore/ISymbolNamespace.xml
index 0b5037a4f44..e7cf52d0db4 100644
--- a/xml/System.Diagnostics.SymbolStore/ISymbolNamespace.xml
+++ b/xml/System.Diagnostics.SymbolStore/ISymbolNamespace.xml
@@ -38,10 +38,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics.SymbolStore/ISymbolReader.xml b/xml/System.Diagnostics.SymbolStore/ISymbolReader.xml
index 75ea56dcf77..17c5e434b30 100644
--- a/xml/System.Diagnostics.SymbolStore/ISymbolReader.xml
+++ b/xml/System.Diagnostics.SymbolStore/ISymbolReader.xml
@@ -38,10 +38,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -238,12 +234,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.SymbolStore.ISymbolMethod</ReturnType>
       </ReturnValue>
@@ -289,12 +279,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.SymbolStore.ISymbolMethod</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics.SymbolStore/ISymbolScope.xml b/xml/System.Diagnostics.SymbolStore/ISymbolScope.xml
index 3e7e462b4a7..1c81a014303 100644
--- a/xml/System.Diagnostics.SymbolStore/ISymbolScope.xml
+++ b/xml/System.Diagnostics.SymbolStore/ISymbolScope.xml
@@ -38,10 +38,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics.SymbolStore/ISymbolVariable.xml b/xml/System.Diagnostics.SymbolStore/ISymbolVariable.xml
index c0a9604fef1..7607c08e0d3 100644
--- a/xml/System.Diagnostics.SymbolStore/ISymbolVariable.xml
+++ b/xml/System.Diagnostics.SymbolStore/ISymbolVariable.xml
@@ -38,10 +38,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics.SymbolStore/ISymbolWriter.xml b/xml/System.Diagnostics.SymbolStore/ISymbolWriter.xml
index f797201f31d..450494d5e4d 100644
--- a/xml/System.Diagnostics.SymbolStore/ISymbolWriter.xml
+++ b/xml/System.Diagnostics.SymbolStore/ISymbolWriter.xml
@@ -38,10 +38,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics.SymbolStore/SymbolToken.xml b/xml/System.Diagnostics.SymbolStore/SymbolToken.xml
index 2b445593b46..276ec4ff9b3 100644
--- a/xml/System.Diagnostics.SymbolStore/SymbolToken.xml
+++ b/xml/System.Diagnostics.SymbolStore/SymbolToken.xml
@@ -197,12 +197,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics.Tracing/DiagnosticCounter.xml b/xml/System.Diagnostics.Tracing/DiagnosticCounter.xml
index 050d0e7d223..bf0340884da 100644
--- a/xml/System.Diagnostics.Tracing/DiagnosticCounter.xml
+++ b/xml/System.Diagnostics.Tracing/DiagnosticCounter.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/System.Diagnostics.Tracing/EventAttribute.xml b/xml/System.Diagnostics.Tracing/EventAttribute.xml
index d68dabdba93..c8b022487ec 100644
--- a/xml/System.Diagnostics.Tracing/EventAttribute.xml
+++ b/xml/System.Diagnostics.Tracing/EventAttribute.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies additional event schema information for an event.</summary>
diff --git a/xml/System.Diagnostics.Tracing/EventCounter.xml b/xml/System.Diagnostics.Tracing/EventCounter.xml
index b42f9c4fba4..41eb09f20b6 100644
--- a/xml/System.Diagnostics.Tracing/EventCounter.xml
+++ b/xml/System.Diagnostics.Tracing/EventCounter.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netstandard-2.0">
       <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics.Tracing/EventDataAttribute.xml b/xml/System.Diagnostics.Tracing/EventDataAttribute.xml
index 9bc47b5540a..789317c81dd 100644
--- a/xml/System.Diagnostics.Tracing/EventDataAttribute.xml
+++ b/xml/System.Diagnostics.Tracing/EventDataAttribute.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies a type to be passed to the <see cref="M:System.Diagnostics.Tracing.EventSource.Write``1(System.String,System.Diagnostics.Tracing.EventSourceOptions,``0)" /> method.</summary>
diff --git a/xml/System.Diagnostics.Tracing/EventListener.xml b/xml/System.Diagnostics.Tracing/EventListener.xml
index dead1c8f9d4..f4811f82fa6 100644
--- a/xml/System.Diagnostics.Tracing/EventListener.xml
+++ b/xml/System.Diagnostics.Tracing/EventListener.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods for enabling and disabling events from event sources.</summary>
diff --git a/xml/System.Diagnostics.Tracing/EventSource+EventData.xml b/xml/System.Diagnostics.Tracing/EventSource+EventData.xml
index 22f8993236d..07bccecb3f8 100644
--- a/xml/System.Diagnostics.Tracing/EventSource+EventData.xml
+++ b/xml/System.Diagnostics.Tracing/EventSource+EventData.xml
@@ -42,12 +42,6 @@
     <BaseTypeName>System.ValueType</BaseTypeName>
   </Base>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides the event data for creating fast <see cref="Overload:System.Diagnostics.Tracing.EventSource.WriteEvent" /> overloads by using the <see cref="M:System.Diagnostics.Tracing.EventSource.WriteEventCore(System.Int32,System.Int32,System.Diagnostics.Tracing.EventSource.EventData*)" /> method.</summary>
     <remarks>
diff --git a/xml/System.Diagnostics.Tracing/EventSource+EventSourcePrimitive.xml b/xml/System.Diagnostics.Tracing/EventSource+EventSourcePrimitive.xml
index 20bfedb5d8b..6c60bae0c80 100644
--- a/xml/System.Diagnostics.Tracing/EventSource+EventSourcePrimitive.xml
+++ b/xml/System.Diagnostics.Tracing/EventSource+EventSourcePrimitive.xml
@@ -228,12 +228,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.Tracing.EventSource+EventSourcePrimitive</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics.Tracing/EventSource.xml b/xml/System.Diagnostics.Tracing/EventSource.xml
index 667cf42f810..8a6ac49e2d9 100644
--- a/xml/System.Diagnostics.Tracing/EventSource.xml
+++ b/xml/System.Diagnostics.Tracing/EventSource.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the ability to create events for event tracing across platforms.</summary>
@@ -239,12 +235,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="eventSourceName" Type="System.String" Index="0" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.3;netstandard-1.4;netstandard-1.5;netstandard-1.6;netstandard-2.0;netstandard-2.1" />
       </Parameters>
@@ -361,12 +351,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="eventSourceName" Type="System.String" Index="0" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.3;netstandard-1.4;netstandard-1.5;netstandard-1.6;netstandard-2.0;netstandard-2.1" />
         <Parameter Name="config" Type="System.Diagnostics.Tracing.EventSourceSettings" Index="1" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.3;netstandard-1.4;netstandard-1.5;netstandard-1.6;netstandard-2.0;netstandard-2.1" />
@@ -423,12 +407,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="eventSourceName" Type="System.String" Index="0" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.3;netstandard-1.4;netstandard-1.5;netstandard-1.6;netstandard-2.0;netstandard-2.1" />
         <Parameter Name="config" Type="System.Diagnostics.Tracing.EventSourceSettings" Index="1" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.3;netstandard-1.4;netstandard-1.5;netstandard-1.6;netstandard-2.0;netstandard-2.1" />
@@ -973,12 +951,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Guid</ReturnType>
       </ReturnValue>
@@ -1032,12 +1004,6 @@ In such cases, the GUID that is used to register the <xref:System.Diagnostics.Tr
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1084,12 +1050,6 @@ In such cases, the GUID that is used to register the <xref:System.Diagnostics.Tr
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IEnumerable&lt;System.Diagnostics.Tracing.EventSource&gt;</ReturnType>
       </ReturnValue>
@@ -1132,12 +1092,6 @@ In such cases, the GUID that is used to register the <xref:System.Diagnostics.Tr
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1415,10 +1369,6 @@ In such cases, the GUID that is used to register the <xref:System.Diagnostics.Tr
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1462,12 +1412,6 @@ In such cases, the GUID that is used to register the <xref:System.Diagnostics.Tr
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1514,12 +1458,6 @@ In such cases, the GUID that is used to register the <xref:System.Diagnostics.Tr
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1752,12 +1690,6 @@ In such cases, the GUID that is used to register the <xref:System.Diagnostics.Tr
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -2420,12 +2352,6 @@ public void Info1(byte[] arg1)
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3674,10 +3600,6 @@ public void Info1(string arg1)
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("EventSource will serialize the whole object graph. Trimmer will not safely handle this case because properties may be trimmed. This can be suppressed if the object is a primitive type")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("EventSource will serialize the whole object graph. Trimmer will not safely handle this case because properties may be trimmed. This can be suppressed if the object is a primitive type")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -3995,10 +3917,6 @@ fixed(byte* ptr = arg)
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("EventSource will serialize the whole object graph. Trimmer will not safely handle this case because properties may be trimmed. This can be suppressed if the object is a primitive type")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("EventSource will serialize the whole object graph. Trimmer will not safely handle this case because properties may be trimmed. This can be suppressed if the object is a primitive type")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Diagnostics.Tracing/EventSourceAttribute.xml b/xml/System.Diagnostics.Tracing/EventSourceAttribute.xml
index 371ac642889..0f75050ed03 100644
--- a/xml/System.Diagnostics.Tracing/EventSourceAttribute.xml
+++ b/xml/System.Diagnostics.Tracing/EventSourceAttribute.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Allows the event tracing for Windows (ETW) name to be defined independently of the name of the event source class.</summary>
diff --git a/xml/System.Diagnostics.Tracing/EventSourceCreatedEventArgs.xml b/xml/System.Diagnostics.Tracing/EventSourceCreatedEventArgs.xml
index 3a970dd408f..9295400aa19 100644
--- a/xml/System.Diagnostics.Tracing/EventSourceCreatedEventArgs.xml
+++ b/xml/System.Diagnostics.Tracing/EventSourceCreatedEventArgs.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Diagnostics.Tracing.EventListener.EventSourceCreated" /> event.</summary>
diff --git a/xml/System.Diagnostics.Tracing/EventSourceException.xml b/xml/System.Diagnostics.Tracing/EventSourceException.xml
index 99c6f22b744..7eb9b03eeb4 100644
--- a/xml/System.Diagnostics.Tracing/EventSourceException.xml
+++ b/xml/System.Diagnostics.Tracing/EventSourceException.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -195,10 +191,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
diff --git a/xml/System.Diagnostics.Tracing/EventWrittenEventArgs.xml b/xml/System.Diagnostics.Tracing/EventWrittenEventArgs.xml
index 92b93b9a55e..13be4a19237 100644
--- a/xml/System.Diagnostics.Tracing/EventWrittenEventArgs.xml
+++ b/xml/System.Diagnostics.Tracing/EventWrittenEventArgs.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="M:System.Diagnostics.Tracing.EventListener.OnEventWritten(System.Diagnostics.Tracing.EventWrittenEventArgs)" /> callback.</summary>
@@ -268,10 +264,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.Tracing.EventSource</ReturnType>
diff --git a/xml/System.Diagnostics.Tracing/IncrementingEventCounter.xml b/xml/System.Diagnostics.Tracing/IncrementingEventCounter.xml
index b093c456806..07f9c827daf 100644
--- a/xml/System.Diagnostics.Tracing/IncrementingEventCounter.xml
+++ b/xml/System.Diagnostics.Tracing/IncrementingEventCounter.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a variant of <see cref="T:System.Diagnostics.Tracing.EventCounter" /> for variables that are ever-increasing, such as the number of exceptions in the runtime.</summary>
diff --git a/xml/System.Diagnostics.Tracing/IncrementingPollingCounter.xml b/xml/System.Diagnostics.Tracing/IncrementingPollingCounter.xml
index a734f4f8ded..f03edbe36e9 100644
--- a/xml/System.Diagnostics.Tracing/IncrementingPollingCounter.xml
+++ b/xml/System.Diagnostics.Tracing/IncrementingPollingCounter.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a variant of <see cref="T:System.Diagnostics.Tracing.EventCounter" /> for variables that are ever-increasing, such as the number of exceptions in the runtime.</summary>
diff --git a/xml/System.Diagnostics.Tracing/PollingCounter.xml b/xml/System.Diagnostics.Tracing/PollingCounter.xml
index 7b1f0e4e852..57d57291415 100644
--- a/xml/System.Diagnostics.Tracing/PollingCounter.xml
+++ b/xml/System.Diagnostics.Tracing/PollingCounter.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a variant of <see cref="T:System.Diagnostics.Tracing.EventCounter" /> that collects and calculates similar statistics as <see cref="T:System.Diagnostics.Tracing.EventCounter" />.</summary>
diff --git a/xml/System.Diagnostics/Activity.xml b/xml/System.Diagnostics/Activity.xml
index 073b340432e..b39bec1c025 100644
--- a/xml/System.Diagnostics/Activity.xml
+++ b/xml/System.Diagnostics/Activity.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an operation with context to be used for logging.</summary>
@@ -462,14 +458,6 @@ This key/value pair is included in the collection returned by the <xref:System.D
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.Activity</ReturnType>
@@ -498,14 +486,6 @@ This key/value pair is included in the collection returned by the <xref:System.D
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler&lt;System.Diagnostics.ActivityChangedEventArgs&gt;</ReturnType>
@@ -674,12 +654,6 @@ If the `DisplayName` property is not set, it will return the same value as `Oper
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.Activity+Enumerator&lt;System.Diagnostics.ActivityEvent&gt;</ReturnType>
       </ReturnValue>
@@ -704,12 +678,6 @@ If the `DisplayName` property is not set, it will return the same value as `Oper
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.Activity+Enumerator&lt;System.Diagnostics.ActivityLink&gt;</ReturnType>
       </ReturnValue>
@@ -932,10 +900,6 @@ Normally if the <xref:System.Diagnostics.Activity.ParentId> is defined, its form
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1146,10 +1110,6 @@ An operation name is the *coarsest* name that is useful for grouping/filtering.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.Activity</ReturnType>
@@ -1184,10 +1144,6 @@ An operation name is the *coarsest* name that is useful for grouping/filtering.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1289,10 +1245,6 @@ If the <xref:System.Diagnostics.Activity.ParentId?displayProperty=nameWithType>
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1843,10 +1795,6 @@ The `StartTimeUtc` property is typically initialized when <xref:System.Diagnosti
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2004,14 +1952,6 @@ Call <xref:System.Diagnostics.DiagnosticSource.StopActivity%2A?displayProperty=n
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Func&lt;System.Diagnostics.ActivityTraceId&gt;</ReturnType>
@@ -2056,14 +1996,6 @@ Call <xref:System.Diagnostics.DiagnosticSource.StopActivity%2A?displayProperty=n
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Diagnostics/ActivityChangedEventArgs.xml b/xml/System.Diagnostics/ActivityChangedEventArgs.xml
index 229fb741fc3..b9d783a8a5b 100644
--- a/xml/System.Diagnostics/ActivityChangedEventArgs.xml
+++ b/xml/System.Diagnostics/ActivityChangedEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Diagnostics.Activity.CurrentChanged" /> event.</summary>
diff --git a/xml/System.Diagnostics/ActivityContext.xml b/xml/System.Diagnostics/ActivityContext.xml
index c800c379f3c..5f00e469ad4 100644
--- a/xml/System.Diagnostics/ActivityContext.xml
+++ b/xml/System.Diagnostics/ActivityContext.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A representation that conforms to the W3C TraceContext specification. It contains two identifiers: a TraceId and a SpanId,  along with a set of common TraceFlags and system-specific TraceState values.</summary>
@@ -282,12 +278,6 @@ ActivityContext contains the property `IsRemote`, which is not part of W3C. `IsR
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.ActivityContext</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics/ActivityCreationOptions`1.xml b/xml/System.Diagnostics/ActivityCreationOptions`1.xml
index 6ce71857e21..dad40700f8e 100644
--- a/xml/System.Diagnostics/ActivityCreationOptions`1.xml
+++ b/xml/System.Diagnostics/ActivityCreationOptions`1.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of the <see langword="Parent" /> property. Should be either <see cref="T:System.String" /> or <see langword="ActivityContext" />.</typeparam>
@@ -91,10 +87,6 @@ The possible generic type parameters are <see cref="T:System.Diagnostics.Activit
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IEnumerable&lt;System.Diagnostics.ActivityLink&gt;</ReturnType>
@@ -267,14 +259,6 @@ The possible generic type parameters are <see cref="T:System.Diagnostics.Activit
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Diagnostics/ActivityEvent.xml b/xml/System.Diagnostics/ActivityEvent.xml
index 803bd5739b2..b16423360ee 100644
--- a/xml/System.Diagnostics/ActivityEvent.xml
+++ b/xml/System.Diagnostics/ActivityEvent.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an event containing a name and a timestamp, as well as an optional list of tags.</summary>
diff --git a/xml/System.Diagnostics/ActivityLink.xml b/xml/System.Diagnostics/ActivityLink.xml
index 64701f6b4e2..c549637b6b4 100644
--- a/xml/System.Diagnostics/ActivityLink.xml
+++ b/xml/System.Diagnostics/ActivityLink.xml
@@ -49,12 +49,6 @@ Activity links can be used to represent batched operations where an activity was
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="context" Type="System.Diagnostics.ActivityContext" />
         <Parameter Name="tags" Type="System.Diagnostics.ActivityTagsCollection" />
@@ -166,12 +160,6 @@ Activity links can be used to represent batched operations where an activity was
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics/ActivityListener.xml b/xml/System.Diagnostics/ActivityListener.xml
index b20bbaed0cb..8bc59bc5384 100644
--- a/xml/System.Diagnostics/ActivityListener.xml
+++ b/xml/System.Diagnostics/ActivityListener.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Allows listening to the start and stop activity events and gives the opportunity to decide creating an activity for sampling scenarios.</summary>
diff --git a/xml/System.Diagnostics/ActivitySource.xml b/xml/System.Diagnostics/ActivitySource.xml
index 00a2f3cff57..9b4e8c0c3c5 100644
--- a/xml/System.Diagnostics/ActivitySource.xml
+++ b/xml/System.Diagnostics/ActivitySource.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides APIs to create and start <see cref="T:System.Diagnostics.Activity" /> objects and to register <see cref="T:System.Diagnostics.ActivityListener" /> objects to listen to the <see cref="T:System.Diagnostics.Activity" /> events.</summary>
@@ -206,12 +202,6 @@ If the Activity object is created, it will not start automatically. Callers need
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.Activity</ReturnType>
       </ReturnValue>
@@ -270,12 +260,6 @@ If the Activity object is created, it will not start automatically. Callers need
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.Activity</ReturnType>
       </ReturnValue>
@@ -444,12 +428,6 @@ If the Activity object is created, it will not start automatically. Callers need
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.Activity</ReturnType>
       </ReturnValue>
@@ -504,12 +482,6 @@ If the Activity object is created, it will not start automatically. Callers need
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.Activity</ReturnType>
       </ReturnValue>
@@ -561,12 +533,6 @@ If the Activity object is created, it will not start automatically. Callers need
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.Activity</ReturnType>
       </ReturnValue>
@@ -650,10 +616,6 @@ If the Activity object is created, it will not start automatically. Callers need
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Diagnostics/ActivitySpanId.xml b/xml/System.Diagnostics/ActivitySpanId.xml
index aaa47293e1c..1e8385de0a3 100644
--- a/xml/System.Diagnostics/ActivitySpanId.xml
+++ b/xml/System.Diagnostics/ActivitySpanId.xml
@@ -249,12 +249,6 @@ The characters in <paramref name="idData" /> are not all lower-case hexadecimal
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -382,12 +376,6 @@ The characters in <paramref name="idData" /> are not all lower-case hexadecimal
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -414,12 +402,6 @@ The characters in <paramref name="idData" /> are not all lower-case hexadecimal
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics/ActivityTagsCollection+Enumerator.xml b/xml/System.Diagnostics/ActivityTagsCollection+Enumerator.xml
index 09eab46f524..51e0b93bfdf 100644
--- a/xml/System.Diagnostics/ActivityTagsCollection+Enumerator.xml
+++ b/xml/System.Diagnostics/ActivityTagsCollection+Enumerator.xml
@@ -28,12 +28,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Enumerates the elements of an <see langword="ActivityTagsCollection" />.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Diagnostics/ActivityTagsCollection.xml b/xml/System.Diagnostics/ActivityTagsCollection.xml
index 0928724cfc3..5f80aa68b4f 100644
--- a/xml/System.Diagnostics/ActivityTagsCollection.xml
+++ b/xml/System.Diagnostics/ActivityTagsCollection.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>ActivityTagsCollection is a collection class used to store tracing tags.
diff --git a/xml/System.Diagnostics/ActivityTraceId.xml b/xml/System.Diagnostics/ActivityTraceId.xml
index cc8dd7827c6..dce6409644f 100644
--- a/xml/System.Diagnostics/ActivityTraceId.xml
+++ b/xml/System.Diagnostics/ActivityTraceId.xml
@@ -251,12 +251,6 @@ The characters in <paramref name="idData" /> are not all lower-case hexadecimal
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -384,12 +378,6 @@ The characters in <paramref name="idData" /> are not all lower-case hexadecimal
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -416,12 +404,6 @@ The characters in <paramref name="idData" /> are not all lower-case hexadecimal
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics/BooleanSwitch.xml b/xml/System.Diagnostics/BooleanSwitch.xml
index fcb11b228bb..c94c7c73a62 100644
--- a/xml/System.Diagnostics/BooleanSwitch.xml
+++ b/xml/System.Diagnostics/BooleanSwitch.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a simple on/off switch that controls debugging and tracing output.</summary>
diff --git a/xml/System.Diagnostics/ConditionalAttribute.xml b/xml/System.Diagnostics/ConditionalAttribute.xml
index 5d53f035631..dc6724d0eec 100644
--- a/xml/System.Diagnostics/ConditionalAttribute.xml
+++ b/xml/System.Diagnostics/ConditionalAttribute.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Method, AllowMultiple=true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Method, AllowMultiple=true)&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics/CorrelationManager.xml b/xml/System.Diagnostics/CorrelationManager.xml
index 55425b09ac9..fac14225f6b 100644
--- a/xml/System.Diagnostics/CorrelationManager.xml
+++ b/xml/System.Diagnostics/CorrelationManager.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Correlates traces that are part of a logical transaction.</summary>
diff --git a/xml/System.Diagnostics/DataReceivedEventArgs.xml b/xml/System.Diagnostics/DataReceivedEventArgs.xml
index cb1d8c1fcda..e04d8553b83 100644
--- a/xml/System.Diagnostics/DataReceivedEventArgs.xml
+++ b/xml/System.Diagnostics/DataReceivedEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Diagnostics.Process.OutputDataReceived" /> and <see cref="E:System.Diagnostics.Process.ErrorDataReceived" /> events.</summary>
diff --git a/xml/System.Diagnostics/Debug+AssertInterpolatedStringHandler.xml b/xml/System.Diagnostics/Debug+AssertInterpolatedStringHandler.xml
index 858226f04b6..b19c7703c07 100644
--- a/xml/System.Diagnostics/Debug+AssertInterpolatedStringHandler.xml
+++ b/xml/System.Diagnostics/Debug+AssertInterpolatedStringHandler.xml
@@ -98,12 +98,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -187,12 +181,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -261,12 +249,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -305,12 +287,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -433,12 +409,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics/Debug+WriteIfInterpolatedStringHandler.xml b/xml/System.Diagnostics/Debug+WriteIfInterpolatedStringHandler.xml
index 34b6bdff9df..da5bc600002 100644
--- a/xml/System.Diagnostics/Debug+WriteIfInterpolatedStringHandler.xml
+++ b/xml/System.Diagnostics/Debug+WriteIfInterpolatedStringHandler.xml
@@ -98,12 +98,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -187,12 +181,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -261,12 +249,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -305,12 +287,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -433,12 +409,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics/Debug.xml b/xml/System.Diagnostics/Debug.xml
index 6d69665d9c9..46015951981 100644
--- a/xml/System.Diagnostics/Debug.xml
+++ b/xml/System.Diagnostics/Debug.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of methods and properties that help debug your code.</summary>
@@ -698,10 +694,6 @@ The following example checks whether the `type` parameter is valid. If `type` is
           <AttributeName Language="C#">[System.Diagnostics.Conditional("DEBUG")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("DEBUG")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1587,10 +1579,6 @@ The following example creates a <xref:System.Diagnostics.TextWriterTraceListener
           <AttributeName Language="C#">[System.Diagnostics.Conditional("DEBUG")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("DEBUG")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -2948,10 +2936,6 @@ The following example creates a <xref:System.Diagnostics.TraceSwitch> named `gen
           <AttributeName Language="C#">[System.Diagnostics.Conditional("DEBUG")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("DEBUG")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Diagnostics/Debugger.xml b/xml/System.Diagnostics/Debugger.xml
index bb3496c5b8b..1591f5f9769 100644
--- a/xml/System.Diagnostics/Debugger.xml
+++ b/xml/System.Diagnostics/Debugger.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -205,12 +201,6 @@ Console.WriteLine("Hello, world.");
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics/DebuggerDisplayAttribute.xml b/xml/System.Diagnostics/DebuggerDisplayAttribute.xml
index 74be7772075..70e67f5ab9f 100644
--- a/xml/System.Diagnostics/DebuggerDisplayAttribute.xml
+++ b/xml/System.Diagnostics/DebuggerDisplayAttribute.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -419,10 +415,6 @@ class MyTable
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Diagnostics/DebuggerTypeProxyAttribute.xml b/xml/System.Diagnostics/DebuggerTypeProxyAttribute.xml
index ccae3a4135f..a4b48646b3e 100644
--- a/xml/System.Diagnostics/DebuggerTypeProxyAttribute.xml
+++ b/xml/System.Diagnostics/DebuggerTypeProxyAttribute.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -141,12 +137,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="typeName" Type="System.String">
           <Attributes>
@@ -205,12 +195,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="type" Type="System.Type">
           <Attributes>
@@ -289,10 +273,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Diagnostics/DebuggerVisualizerAttribute.xml b/xml/System.Diagnostics/DebuggerVisualizerAttribute.xml
index d9c81f50ae5..27ee6ec8b05 100644
--- a/xml/System.Diagnostics/DebuggerVisualizerAttribute.xml
+++ b/xml/System.Diagnostics/DebuggerVisualizerAttribute.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -122,12 +118,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="visualizerTypeName" Type="System.String">
           <Attributes>
@@ -184,12 +174,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="visualizer" Type="System.Type">
           <Attributes>
@@ -249,12 +233,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="visualizerTypeName" Type="System.String">
           <Attributes>
@@ -324,12 +302,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="visualizerTypeName" Type="System.String">
           <Attributes>
@@ -398,12 +370,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="visualizer" Type="System.Type">
           <Attributes>
@@ -475,12 +441,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="visualizer" Type="System.Type">
           <Attributes>
@@ -752,10 +712,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Diagnostics/DefaultTraceListener.xml b/xml/System.Diagnostics/DefaultTraceListener.xml
index 990928d3b2e..7d1f35d12ca 100644
--- a/xml/System.Diagnostics/DefaultTraceListener.xml
+++ b/xml/System.Diagnostics/DefaultTraceListener.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics/DelimitedListTraceListener.xml b/xml/System.Diagnostics/DelimitedListTraceListener.xml
index af15aeedd82..daf4ad3721e 100644
--- a/xml/System.Diagnostics/DelimitedListTraceListener.xml
+++ b/xml/System.Diagnostics/DelimitedListTraceListener.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Directs tracing or debugging output to a text writer, such as a stream writer, or to a stream, such as a file stream.</summary>
@@ -232,12 +228,6 @@ To configure a <xref:System.Diagnostics.DelimitedListTraceListener> in a .NET Fr
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="fileName" Type="System.String" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1" />
       </Parameters>
@@ -413,12 +403,6 @@ To configure a <xref:System.Diagnostics.DelimitedListTraceListener> in a .NET Fr
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="fileName" Type="System.String" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1" />
         <Parameter Name="name" Type="System.String" Index="1" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1" />
@@ -632,12 +616,6 @@ The following .NET Framework application configuration file example shows the us
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -707,12 +685,6 @@ The following .NET Framework application configuration file example shows the us
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -799,12 +771,6 @@ The following .NET Framework application configuration file example shows the us
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -875,12 +841,6 @@ The following .NET Framework application configuration file example shows the us
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics/DiagnosticListener.xml b/xml/System.Diagnostics/DiagnosticListener.xml
index c7b31642643..e1e076ccd15 100644
--- a/xml/System.Diagnostics/DiagnosticListener.xml
+++ b/xml/System.Diagnostics/DiagnosticListener.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an implementation of the abstract <see cref="T:System.Diagnostics.DiagnosticSource" /> class that represents a named place to which a source sends its information (events).</summary>
@@ -239,12 +235,6 @@ If setup for the notification is expensive, you can call `IsEnabled()` before pe
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics/DiagnosticMethodInfo.xml b/xml/System.Diagnostics/DiagnosticMethodInfo.xml
index 3a04107421f..4e0789887ea 100644
--- a/xml/System.Diagnostics/DiagnosticMethodInfo.xml
+++ b/xml/System.Diagnostics/DiagnosticMethodInfo.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/System.Diagnostics/DiagnosticSource.xml b/xml/System.Diagnostics/DiagnosticSource.xml
index c5aa0e73a74..208866150c9 100644
--- a/xml/System.Diagnostics/DiagnosticSource.xml
+++ b/xml/System.Diagnostics/DiagnosticSource.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>An abstract class that allows code to be instrumented for production-time logging of rich data payloads for consumption within the process that was instrumented.</summary>
@@ -121,12 +117,6 @@ If there is expensive setup for the notification, you can call IsEnabled before
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics/DistributedContextPropagator+PropagatorGetterCallback.xml b/xml/System.Diagnostics/DistributedContextPropagator+PropagatorGetterCallback.xml
index 821ece29580..27923d072a6 100644
--- a/xml/System.Diagnostics/DistributedContextPropagator+PropagatorGetterCallback.xml
+++ b/xml/System.Diagnostics/DistributedContextPropagator+PropagatorGetterCallback.xml
@@ -15,12 +15,6 @@
   <Base>
     <BaseTypeName>System.Delegate</BaseTypeName>
   </Base>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Parameters>
     <Parameter Name="carrier" Type="System.Object" />
     <Parameter Name="fieldName" Type="System.String">
diff --git a/xml/System.Diagnostics/DistributedContextPropagator+PropagatorSetterCallback.xml b/xml/System.Diagnostics/DistributedContextPropagator+PropagatorSetterCallback.xml
index 219d2bbdd84..18bac51db47 100644
--- a/xml/System.Diagnostics/DistributedContextPropagator+PropagatorSetterCallback.xml
+++ b/xml/System.Diagnostics/DistributedContextPropagator+PropagatorSetterCallback.xml
@@ -15,12 +15,6 @@
   <Base>
     <BaseTypeName>System.Delegate</BaseTypeName>
   </Base>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Parameters>
     <Parameter Name="carrier" Type="System.Object">
       <Attributes>
diff --git a/xml/System.Diagnostics/DistributedContextPropagator.xml b/xml/System.Diagnostics/DistributedContextPropagator.xml
index 63c72ede0a9..b753ee63515 100644
--- a/xml/System.Diagnostics/DistributedContextPropagator.xml
+++ b/xml/System.Diagnostics/DistributedContextPropagator.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>An implementation of <see cref="T:System.Diagnostics.DistributedContextPropagator" /> determines if and how distributed context information is encoded and decoded as it traverses the network.
@@ -166,12 +162,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IEnumerable&lt;System.Collections.Generic.KeyValuePair&lt;System.String,System.String&gt;&gt;</ReturnType>
       </ReturnValue>
@@ -200,12 +190,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -259,12 +243,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics/EventTypeFilter.xml b/xml/System.Diagnostics/EventTypeFilter.xml
index 59e2d71ffc7..afbcfd4e51f 100644
--- a/xml/System.Diagnostics/EventTypeFilter.xml
+++ b/xml/System.Diagnostics/EventTypeFilter.xml
@@ -212,12 +212,6 @@ To set the event type at which to begin tracing in a .NET Framework app, edit th
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics/FileVersionInfo.xml b/xml/System.Diagnostics/FileVersionInfo.xml
index 786c7e74b31..5161e56d1ae 100644
--- a/xml/System.Diagnostics/FileVersionInfo.xml
+++ b/xml/System.Diagnostics/FileVersionInfo.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides version information for a physical file on disk.</summary>
@@ -541,10 +537,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -753,12 +745,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.FileVersionInfo</ReturnType>
       </ReturnValue>
@@ -1996,12 +1982,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics/InitializingSwitchEventArgs.xml b/xml/System.Diagnostics/InitializingSwitchEventArgs.xml
index 275d6a95ce0..9d42ad73566 100644
--- a/xml/System.Diagnostics/InitializingSwitchEventArgs.xml
+++ b/xml/System.Diagnostics/InitializingSwitchEventArgs.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Diagnostics.Switch.Initializing">Switch.Initializing</see> event.</summary>
diff --git a/xml/System.Diagnostics/InitializingTraceSourceEventArgs.xml b/xml/System.Diagnostics/InitializingTraceSourceEventArgs.xml
index bd150ffeecd..0aad2462c45 100644
--- a/xml/System.Diagnostics/InitializingTraceSourceEventArgs.xml
+++ b/xml/System.Diagnostics/InitializingTraceSourceEventArgs.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Diagnostics.TraceSource.Initializing">TraceSource.Initializing</see> event.</summary>
diff --git a/xml/System.Diagnostics/MonitoringDescriptionAttribute.xml b/xml/System.Diagnostics/MonitoringDescriptionAttribute.xml
index 921df7437b8..993611e31f1 100644
--- a/xml/System.Diagnostics/MonitoringDescriptionAttribute.xml
+++ b/xml/System.Diagnostics/MonitoringDescriptionAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies a description for a property or event.</summary>
diff --git a/xml/System.Diagnostics/Process.xml b/xml/System.Diagnostics/Process.xml
index 228cdfc9b5a..f175ae4e4ef 100644
--- a/xml/System.Diagnostics/Process.xml
+++ b/xml/System.Diagnostics/Process.xml
@@ -64,10 +64,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">
       <AttributeName Language="C#">[System.ComponentModel.DefaultEvent("Exited")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.DefaultEvent("Exited")&gt;]</AttributeName>
@@ -1071,14 +1067,6 @@ The following code example creates a process that prints a file. It sets the <xr
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">
           <AttributeName Language="C#">[System.ComponentModel.Browsable(true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.Browsable(true)&gt;]</AttributeName>
@@ -2638,10 +2626,6 @@ The calling process is a member of the associated process's descendant tree.</ex
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">
           <AttributeName Language="C#">[System.ComponentModel.Browsable(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.Browsable(false)&gt;]</AttributeName>
@@ -3357,14 +3341,6 @@ If no main module is found, it could be because the process hasn't finished load
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">
           <AttributeName Language="C#">[System.ComponentModel.Browsable(true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.Browsable(true)&gt;]</AttributeName>
@@ -6131,14 +6107,6 @@ The file specified in the <paramref name="fileName" /> could not be found.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">
           <AttributeName Language="C#">[System.ComponentModel.Browsable(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.Browsable(false)&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics/ProcessModule.xml b/xml/System.Diagnostics/ProcessModule.xml
index f683a2411a7..4f155ccae86 100644
--- a/xml/System.Diagnostics/ProcessModule.xml
+++ b/xml/System.Diagnostics/ProcessModule.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Designer("System.Diagnostics.Design.ProcessModuleDesigner, System.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Designer("System.Diagnostics.Design.ProcessModuleDesigner, System.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics/ProcessModuleCollection.xml b/xml/System.Diagnostics/ProcessModuleCollection.xml
index 7214f66ad52..ae7b117847f 100644
--- a/xml/System.Diagnostics/ProcessModuleCollection.xml
+++ b/xml/System.Diagnostics/ProcessModuleCollection.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a strongly typed collection of <see cref="T:System.Diagnostics.ProcessModule" /> objects.</summary>
diff --git a/xml/System.Diagnostics/ProcessStartInfo.xml b/xml/System.Diagnostics/ProcessStartInfo.xml
index bb27c0f58e6..1c22b515716 100644
--- a/xml/System.Diagnostics/ProcessStartInfo.xml
+++ b/xml/System.Diagnostics/ProcessStartInfo.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.ComponentModel.TypeConverter(typeof(System.ComponentModel.ExpandableObjectConverter))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.TypeConverter(typeof(System.ComponentModel.ExpandableObjectConverter))&gt;]</AttributeName>
@@ -1107,14 +1103,6 @@ If you use this property to set command-line arguments, <xref:System.Diagnostics
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1192,14 +1180,6 @@ If you use this property to set command-line arguments, <xref:System.Diagnostics
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">
           <AttributeName Language="C#">[System.ComponentModel.Browsable(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.Browsable(false)&gt;]</AttributeName>
@@ -1560,14 +1540,6 @@ You can use asynchronous read operations to avoid these dependencies and their d
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1621,14 +1593,6 @@ You can use asynchronous read operations to avoid these dependencies and their d
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Encoding</ReturnType>
@@ -1683,14 +1647,6 @@ You can use asynchronous read operations to avoid these dependencies and their d
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics/ProcessThreadCollection.xml b/xml/System.Diagnostics/ProcessThreadCollection.xml
index 5521d0a34d5..a3db3d11277 100644
--- a/xml/System.Diagnostics/ProcessThreadCollection.xml
+++ b/xml/System.Diagnostics/ProcessThreadCollection.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a strongly typed collection of <see cref="T:System.Diagnostics.ProcessThread" /> objects.</summary>
diff --git a/xml/System.Diagnostics/SourceFilter.xml b/xml/System.Diagnostics/SourceFilter.xml
index 02151ebd1cb..7845168b315 100644
--- a/xml/System.Diagnostics/SourceFilter.xml
+++ b/xml/System.Diagnostics/SourceFilter.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates whether a listener should trace a message based on the source of a trace.</summary>
@@ -155,12 +151,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics/SourceSwitch.xml b/xml/System.Diagnostics/SourceSwitch.xml
index a786e7debc1..6a5b08a7eb4 100644
--- a/xml/System.Diagnostics/SourceSwitch.xml
+++ b/xml/System.Diagnostics/SourceSwitch.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a multilevel switch to control tracing and debug output without recompiling your code.</summary>
diff --git a/xml/System.Diagnostics/StackFrame.xml b/xml/System.Diagnostics/StackFrame.xml
index f6bb8562cbb..57327672b51 100644
--- a/xml/System.Diagnostics/StackFrame.xml
+++ b/xml/System.Diagnostics/StackFrame.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -903,10 +899,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics/StackFrameExtensions.xml b/xml/System.Diagnostics/StackFrameExtensions.xml
index 40992ea4ef7..049bcf0dd20 100644
--- a/xml/System.Diagnostics/StackFrameExtensions.xml
+++ b/xml/System.Diagnostics/StackFrameExtensions.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
       <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics/StackTrace.xml b/xml/System.Diagnostics/StackTrace.xml
index b76e236e8ab..cfce2809bff 100644
--- a/xml/System.Diagnostics/StackTrace.xml
+++ b/xml/System.Diagnostics/StackTrace.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -768,12 +764,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.StackFrame</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics/Stopwatch.xml b/xml/System.Diagnostics/Stopwatch.xml
index c56fb0aba47..d3596a53f42 100644
--- a/xml/System.Diagnostics/Stopwatch.xml
+++ b/xml/System.Diagnostics/Stopwatch.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of methods and properties that you can use to accurately measure elapsed time.</summary>
diff --git a/xml/System.Diagnostics/Switch.xml b/xml/System.Diagnostics/Switch.xml
index 82022e4a11c..1e22603134f 100644
--- a/xml/System.Diagnostics/Switch.xml
+++ b/xml/System.Diagnostics/Switch.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an abstract base class to create new debugging and tracing switches.</summary>
diff --git a/xml/System.Diagnostics/SwitchAttribute.xml b/xml/System.Diagnostics/SwitchAttribute.xml
index 3bc7d29e810..865e310a7f6 100644
--- a/xml/System.Diagnostics/SwitchAttribute.xml
+++ b/xml/System.Diagnostics/SwitchAttribute.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Identifies a switch used in an assembly, class, or member.</summary>
@@ -227,14 +223,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics/SwitchLevelAttribute.xml b/xml/System.Diagnostics/SwitchLevelAttribute.xml
index f7cc173c0cb..a6b52179dc0 100644
--- a/xml/System.Diagnostics/SwitchLevelAttribute.xml
+++ b/xml/System.Diagnostics/SwitchLevelAttribute.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Identifies the level type for a switch.</summary>
diff --git a/xml/System.Diagnostics/TagList.xml b/xml/System.Diagnostics/TagList.xml
index 409ec8a9a04..e87ce5cc830 100644
--- a/xml/System.Diagnostics/TagList.xml
+++ b/xml/System.Diagnostics/TagList.xml
@@ -145,12 +145,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics/TextWriterTraceListener.xml b/xml/System.Diagnostics/TextWriterTraceListener.xml
index 1d5fb2c63ab..653c5718099 100644
--- a/xml/System.Diagnostics/TextWriterTraceListener.xml
+++ b/xml/System.Diagnostics/TextWriterTraceListener.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Directs tracing or debugging output to a <see cref="T:System.IO.TextWriter" /> or to a <see cref="T:System.IO.Stream" />, such as <see cref="T:System.IO.FileStream" />.</summary>
@@ -220,12 +216,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="stream" Type="System.IO.Stream" />
       </Parameters>
@@ -292,12 +282,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="writer" Type="System.IO.TextWriter" />
       </Parameters>
@@ -438,12 +422,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="stream" Type="System.IO.Stream" />
         <Parameter Name="name" Type="System.String">
@@ -520,12 +498,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="writer" Type="System.IO.TextWriter" />
         <Parameter Name="name" Type="System.String">
diff --git a/xml/System.Diagnostics/Trace.xml b/xml/System.Diagnostics/Trace.xml
index 2f3e591a1cd..cdb097309cf 100644
--- a/xml/System.Diagnostics/Trace.xml
+++ b/xml/System.Diagnostics/Trace.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of methods and properties that help you trace the execution of your code. This class cannot be inherited.</summary>
@@ -620,10 +616,6 @@ For .NET Framework apps, you can change the behavior of the <xref:System.Diagnos
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.CorrelationManager</ReturnType>
@@ -1157,10 +1149,6 @@ End of list of errors
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Diagnostics.TraceListenerCollection</ReturnType>
@@ -1380,10 +1368,6 @@ End of list of errors
           <AttributeName Language="C#">[System.Diagnostics.Conditional("TRACE")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("TRACE")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1542,10 +1526,6 @@ End of list of errors
           <AttributeName Language="C#">[System.Diagnostics.Conditional("TRACE")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("TRACE")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1704,10 +1684,6 @@ End of list of errors
           <AttributeName Language="C#">[System.Diagnostics.Conditional("TRACE")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("TRACE")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Diagnostics/TraceEventCache.xml b/xml/System.Diagnostics/TraceEventCache.xml
index ce118afb6e1..fb7560cb8db 100644
--- a/xml/System.Diagnostics/TraceEventCache.xml
+++ b/xml/System.Diagnostics/TraceEventCache.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides trace event data specific to a thread and a process.</summary>
diff --git a/xml/System.Diagnostics/TraceFilter.xml b/xml/System.Diagnostics/TraceFilter.xml
index 072ca2a9560..4dab8449c04 100644
--- a/xml/System.Diagnostics/TraceFilter.xml
+++ b/xml/System.Diagnostics/TraceFilter.xml
@@ -127,12 +127,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics/TraceListener.xml b/xml/System.Diagnostics/TraceListener.xml
index 8e495cf59f0..0c97559704c 100644
--- a/xml/System.Diagnostics/TraceListener.xml
+++ b/xml/System.Diagnostics/TraceListener.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the <see langword="abstract" /> base class for the listeners who monitor trace and debug output.</summary>
@@ -257,10 +253,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Specialized.StringDictionary</ReturnType>
@@ -1001,14 +993,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1329,10 +1313,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.Diagnostics/TraceListenerCollection.xml b/xml/System.Diagnostics/TraceListenerCollection.xml
index 246aa591c55..2dcba1301ee 100644
--- a/xml/System.Diagnostics/TraceListenerCollection.xml
+++ b/xml/System.Diagnostics/TraceListenerCollection.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a thread-safe list of <see cref="T:System.Diagnostics.TraceListener" /> objects.</summary>
@@ -357,12 +353,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -580,12 +570,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -850,12 +834,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Diagnostics/TraceSource.xml b/xml/System.Diagnostics/TraceSource.xml
index 1ce39efab6e..153de32fb5c 100644
--- a/xml/System.Diagnostics/TraceSource.xml
+++ b/xml/System.Diagnostics/TraceSource.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of methods and properties that enable applications to trace the execution of code and associate trace messages with their source.</summary>
@@ -784,10 +780,6 @@ You can refer to the trace source by using the `name` attribute in the configura
           <AttributeName Language="C#">[System.Diagnostics.Conditional("TRACE")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("TRACE")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -863,10 +855,6 @@ You can refer to the trace source by using the `name` attribute in the configura
           <AttributeName Language="C#">[System.Diagnostics.Conditional("TRACE")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("TRACE")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1025,10 +1013,6 @@ You can refer to the trace source by using the `name` attribute in the configura
           <AttributeName Language="C#">[System.Diagnostics.Conditional("TRACE")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("TRACE")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1107,10 +1091,6 @@ You can refer to the trace source by using the `name` attribute in the configura
           <AttributeName Language="C#">[System.Diagnostics.Conditional("TRACE")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("TRACE")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1231,10 +1211,6 @@ You can refer to the trace source by using the `name` attribute in the configura
           <AttributeName Language="C#">[System.Diagnostics.Conditional("TRACE")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("TRACE")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1300,10 +1276,6 @@ You can refer to the trace source by using the `name` attribute in the configura
           <AttributeName Language="C#">[System.Diagnostics.Conditional("TRACE")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("TRACE")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1400,10 +1372,6 @@ You can refer to the trace source by using the `name` attribute in the configura
           <AttributeName Language="C#">[System.Diagnostics.Conditional("TRACE")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.Conditional("TRACE")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Diagnostics/TraceSwitch.xml b/xml/System.Diagnostics/TraceSwitch.xml
index 85014ffa8c8..f76b55d90dc 100644
--- a/xml/System.Diagnostics/TraceSwitch.xml
+++ b/xml/System.Diagnostics/TraceSwitch.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a multilevel switch to control tracing and debug output without recompiling your code.</summary>
diff --git a/xml/System.Diagnostics/UnreachableException.xml b/xml/System.Diagnostics/UnreachableException.xml
index 2ff8fa26bba..acf8642e3c3 100644
--- a/xml/System.Diagnostics/UnreachableException.xml
+++ b/xml/System.Diagnostics/UnreachableException.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The exception that is thrown when the program executes an instruction that was thought to be unreachable.</summary>
diff --git a/xml/System.Diagnostics/XmlWriterTraceListener.xml b/xml/System.Diagnostics/XmlWriterTraceListener.xml
index ac820e38bba..32477071c6e 100644
--- a/xml/System.Diagnostics/XmlWriterTraceListener.xml
+++ b/xml/System.Diagnostics/XmlWriterTraceListener.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Directs tracing or debugging output as XML-encoded data to a <see cref="T:System.IO.TextWriter" /> or to a <see cref="T:System.IO.Stream" />, such as a <see cref="T:System.IO.FileStream" />.</summary>
@@ -148,12 +144,6 @@ You can create an <xref:System.Diagnostics.XmlWriterTraceListener> in your code.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="stream" Type="System.IO.Stream" />
       </Parameters>
@@ -195,12 +185,6 @@ You can create an <xref:System.Diagnostics.XmlWriterTraceListener> in your code.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="writer" Type="System.IO.TextWriter" />
       </Parameters>
@@ -290,12 +274,6 @@ You can create an <xref:System.Diagnostics.XmlWriterTraceListener> in your code.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="stream" Type="System.IO.Stream" />
         <Parameter Name="name" Type="System.String">
@@ -352,12 +330,6 @@ You can create an <xref:System.Diagnostics.XmlWriterTraceListener> in your code.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="writer" Type="System.IO.TextWriter" />
         <Parameter Name="name" Type="System.String">
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryInterSiteTransport.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryInterSiteTransport.xml
index 5096632cb3e..302b68020d6 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryInterSiteTransport.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryInterSiteTransport.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectoryInterSiteTransport" /> class represents an inter-site transport object.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryObjectExistsException.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryObjectExistsException.xml
index dd71ea01a3e..a3741992b66 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryObjectExistsException.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryObjectExistsException.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -116,10 +112,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryObjectNotFoundException.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryObjectNotFoundException.xml
index 1598b50ede3..ff154cde304 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryObjectNotFoundException.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryObjectNotFoundException.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -120,10 +116,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
@@ -224,10 +216,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryOperationException.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryOperationException.xml
index a8ca65aff73..94cb2fdc419 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryOperationException.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryOperationException.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -120,10 +116,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
@@ -276,10 +268,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryPartition.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryPartition.xml
index aa366738d22..424aec8a55e 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryPartition.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryPartition.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectoryPartition" /> class is an abstract class that represents a directory partition in a domain.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryReplicationMetadata.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryReplicationMetadata.xml
index bcf16ec4d4b..1d7ab3b0dbf 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryReplicationMetadata.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryReplicationMetadata.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectoryReplicationMetadata" /> class contains replication information for a set of Active Directory Domain Services attributes.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryRoleCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryRoleCollection.xml
index 97442156db7..b1d0e59e4c6 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryRoleCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryRoleCollection.xml
@@ -68,12 +68,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchedule.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchedule.xml
index 03771ee12d3..a6dd1edc525 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchedule.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchedule.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
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-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySchedule" /> class represents the weekly schedule for an Active Directory Domain Services replication.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchema.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchema.xml
index 65af8d50be0..da6bf2c832a 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchema.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchema.xml
@@ -21,10 +21,6 @@
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-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySchema" /> class represents the schema partition for a particular domain.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchemaClass.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchemaClass.xml
index de334dc7fb0..eefad43fa7f 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchemaClass.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchemaClass.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
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-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySchemaClass" /> class represents a schema class definition that is contained in the schema partition.</summary>
@@ -123,14 +119,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -165,14 +153,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.DirectoryServices.ActiveDirectorySecurity</ReturnType>
@@ -207,14 +187,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -491,14 +463,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -682,14 +646,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.DirectoryServices.ActiveDirectory.ActiveDirectorySchemaClass</ReturnType>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchemaClassCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchemaClassCollection.xml
index 0a326bc5ecc..3aa3b9dc4c0 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchemaClassCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchemaClassCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySchemaClassCollection" /> class is a read/write collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySchemaClass" /> objects.</summary>
@@ -385,12 +381,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -422,12 +412,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -459,12 +443,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchemaProperty.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchemaProperty.xml
index 3d43bf9f495..805c887b0c5 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchemaProperty.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchemaProperty.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySchemaProperty" /> class represents a schema property definition that is contained in the schema partition.</summary>
@@ -50,12 +46,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="context" Type="System.DirectoryServices.ActiveDirectory.DirectoryContext" />
         <Parameter Name="ldapDisplayName" Type="System.String" />
@@ -221,12 +211,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DirectoryServices.ActiveDirectory.ActiveDirectorySchemaProperty</ReturnType>
       </ReturnValue>
@@ -264,12 +248,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DirectoryServices.DirectoryEntry</ReturnType>
       </ReturnValue>
@@ -588,10 +566,6 @@ For more information, see the [Link-ID](/windows/desktop/adschema/a-linkid) arti
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -812,12 +786,6 @@ For more information, see the [LDAP-Display-Name](/windows/desktop/adschema/a-ld
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchemaPropertyCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchemaPropertyCollection.xml
index 7fc85f6c7b1..faeec15be39 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchemaPropertyCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySchemaPropertyCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySchemaPropertyCollection" /> class is a read/write collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySchemaProperty" /> objects.</summary>
@@ -385,12 +381,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -422,12 +412,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -459,12 +443,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryServerDownException.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryServerDownException.xml
index f482349ebff..cdb1baaba7e 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryServerDownException.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectoryServerDownException.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -118,10 +114,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
@@ -274,10 +266,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -315,10 +303,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySite.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySite.xml
index 22015bc030e..7301787cbb0 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySite.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySite.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySite" /> class defines a set of domain controllers that are well-connected in terms of speed and cost. A site object consists of a set of one or more IP subnets.</summary>
@@ -370,14 +366,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.DirectoryServices.ActiveDirectory.DirectoryServer</ReturnType>
@@ -421,14 +409,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.DirectoryServices.ActiveDirectory.ActiveDirectorySchedule</ReturnType>
@@ -463,14 +443,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySiteCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySiteCollection.xml
index 9564d780407..29c0ece2503 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySiteCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySiteCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySiteCollection" /> class is a read/write collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySite" /> objects.</summary>
@@ -352,12 +348,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -389,12 +379,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -426,12 +410,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySiteLink.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySiteLink.xml
index 3f3ed9943c2..182abbdb85b 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySiteLink.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySiteLink.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySiteLink" /> class represents a set of two or more sites that can be scheduled, for replication, to communicate at uniform cost and through a particular transport.</summary>
@@ -481,14 +477,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.DirectoryServices.ActiveDirectory.ActiveDirectorySchedule</ReturnType>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySiteLinkBridge.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySiteLinkBridge.xml
index c69cd33a1e5..95932659888 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySiteLinkBridge.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySiteLinkBridge.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySiteLinkBridge" /> class represents a set of site links that communicate through a transport.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySiteLinkCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySiteLinkCollection.xml
index 693b6f46da4..526fb78a52c 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySiteLinkCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySiteLinkCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySiteLinkCollection" /> class is a read/write collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySiteLink" /> objects.</summary>
@@ -351,12 +347,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -388,12 +378,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -425,12 +409,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySubnet.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySubnet.xml
index 4751c5270a7..00478b0d161 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySubnet.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySubnet.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySubnet" /> class represents a subnet in a <see cref="T:System.DirectoryServices.ActiveDirectory.Forest" />.</summary>
@@ -308,14 +304,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -404,14 +392,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.DirectoryServices.ActiveDirectory.ActiveDirectorySite</ReturnType>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySubnetCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySubnetCollection.xml
index 69d2362c38c..6de8f8f4869 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySubnetCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ActiveDirectorySubnetCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySubnetCollection" /> class is a read/write collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySubnet" /> objects.</summary>
@@ -376,12 +372,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -413,12 +403,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -450,12 +434,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/AdamInstance.xml b/xml/System.DirectoryServices.ActiveDirectory/AdamInstance.xml
index 7bc286fc49c..3fdab0793b5 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/AdamInstance.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/AdamInstance.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.AdamInstance" /> class represents an AD LDS instance server.</summary>
@@ -122,14 +118,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -575,10 +563,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -795,14 +779,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.DirectoryServices.ActiveDirectory.SyncUpdateCallback</ReturnType>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/AdamInstanceCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/AdamInstanceCollection.xml
index 35b32e9380d..947bb36d91d 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/AdamInstanceCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/AdamInstanceCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.AdamInstanceCollection" /> class is a read-only collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.AdamInstance" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/AdamRoleCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/AdamRoleCollection.xml
index c0ac732bcdb..85a53e85811 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/AdamRoleCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/AdamRoleCollection.xml
@@ -79,12 +79,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ApplicationPartition.xml b/xml/System.DirectoryServices.ActiveDirectory/ApplicationPartition.xml
index 7af9ae4b55e..9ba6b390cae 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ApplicationPartition.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ApplicationPartition.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ApplicationPartition" /> class represents an application partition for a particular domain.</summary>
@@ -663,14 +659,6 @@ No AD LDS instance was found for the application partition.</exception>
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ApplicationPartitionCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ApplicationPartitionCollection.xml
index 06efe9bf2a8..ba75adcc180 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ApplicationPartitionCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ApplicationPartitionCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ApplicationPartitionCollection" /> class is a read-only collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.ApplicationPartition" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/AttributeMetadata.xml b/xml/System.DirectoryServices.ActiveDirectory/AttributeMetadata.xml
index 1f63f024228..e3db66fd828 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/AttributeMetadata.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/AttributeMetadata.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.AttributeMetadata" /> class is used to contain replication metadata for an Active Directory Domain Services attribute.</summary>
@@ -175,10 +171,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/AttributeMetadataCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/AttributeMetadataCollection.xml
index b637af5f6e6..e33f94c4dd9 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/AttributeMetadataCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/AttributeMetadataCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A read-only collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.ApplicationPartition" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ConfigurationSet.xml b/xml/System.DirectoryServices.ActiveDirectory/ConfigurationSet.xml
index 8d47fb29b00..5ce828e35da 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ConfigurationSet.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ConfigurationSet.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ConfigurationSet" /> class represents a configuration set for one or more AD LDS instances.</summary>
@@ -334,12 +330,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DirectoryServices.ActiveDirectory.AdamInstanceCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/DirectoryContext.xml b/xml/System.DirectoryServices.ActiveDirectory/DirectoryContext.xml
index 85626a215cf..99a5c70eda3 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/DirectoryContext.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/DirectoryContext.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.DirectoryContext" /> class identifies a specific directory and the credentials that are used to access the directory.</summary>
@@ -104,12 +100,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="contextType" Type="System.DirectoryServices.ActiveDirectory.DirectoryContextType" />
         <Parameter Name="name" Type="System.String" />
diff --git a/xml/System.DirectoryServices.ActiveDirectory/DirectoryServer.xml b/xml/System.DirectoryServices.ActiveDirectory/DirectoryServer.xml
index e25271aa24d..e314756bd0f 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/DirectoryServer.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/DirectoryServer.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.DirectoryServer" /> class is an abstract class that represents an Active Directory Domain Services server or AD LDS instance.</summary>
@@ -411,10 +407,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -586,14 +578,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.DirectoryServices.ActiveDirectory.SyncUpdateCallback</ReturnType>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/DirectoryServerCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/DirectoryServerCollection.xml
index f42954bc69f..02ec72a973e 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/DirectoryServerCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/DirectoryServerCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.DirectoryServerCollection" /> class is a read/write collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.DirectoryServer" /> objects.</summary>
@@ -334,12 +330,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -371,12 +361,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -408,12 +392,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/Domain.xml b/xml/System.DirectoryServices.ActiveDirectory/Domain.xml
index 2f607cf68e2..f3c0ed85e43 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/Domain.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/Domain.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.Domain" /> class represents an Active Directory domain.</summary>
@@ -993,10 +989,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.DirectoryServices.ActiveDirectory.Domain</ReturnType>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/DomainCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/DomainCollection.xml
index b9e22635e10..367f2f7c436 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/DomainCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/DomainCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.DomainCollection" /> class is a read-only collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.Domain" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/DomainController.xml b/xml/System.DirectoryServices.ActiveDirectory/DomainController.xml
index a9489c33350..85cdb603f42 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/DomainController.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/DomainController.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.DomainController" /> class represents a domain controller in an Active Directory domain.</summary>
@@ -813,10 +809,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1019,14 +1011,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.DirectoryServices.ActiveDirectory.SyncUpdateCallback</ReturnType>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/DomainControllerCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/DomainControllerCollection.xml
index 5cb6620979b..ea415c69765 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/DomainControllerCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/DomainControllerCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.DomainControllerCollection" /> class is a read-only collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.DomainController" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/Forest.xml b/xml/System.DirectoryServices.ActiveDirectory/Forest.xml
index 6b3352b68cb..e6f98903c96 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/Forest.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/Forest.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.Forest" /> class represents an Active Directory Domain Services forest.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ForestTrustCollisionException.xml b/xml/System.DirectoryServices.ActiveDirectory/ForestTrustCollisionException.xml
index 5c36493f759..366cd690ee9 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ForestTrustCollisionException.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ForestTrustCollisionException.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -118,10 +114,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
@@ -248,10 +240,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ForestTrustDomainInfoCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ForestTrustDomainInfoCollection.xml
index db1457b4dcf..5d4cc69552b 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ForestTrustDomainInfoCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ForestTrustDomainInfoCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ForestTrustDomainInfoCollection" /> class is a read-only collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.ForestTrustDomainInformation" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ForestTrustDomainInformation.xml b/xml/System.DirectoryServices.ActiveDirectory/ForestTrustDomainInformation.xml
index 0d433d4eb21..b58ddfe7528 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ForestTrustDomainInformation.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ForestTrustDomainInformation.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ForestTrustDomainInformation" /> class contains information about a <see cref="T:System.DirectoryServices.ActiveDirectory.Domain" /> object and is contained in a <see cref="T:System.DirectoryServices.ActiveDirectory.ForestTrustDomainInfoCollection" /> object.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ForestTrustRelationshipCollision.xml b/xml/System.DirectoryServices.ActiveDirectory/ForestTrustRelationshipCollision.xml
index 38908b92cf2..6e657920c60 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ForestTrustRelationshipCollision.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ForestTrustRelationshipCollision.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collision record resulting from a collision between forest trust records.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ForestTrustRelationshipCollisionCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ForestTrustRelationshipCollisionCollection.xml
index c392bbc2dd8..2696fb78647 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ForestTrustRelationshipCollisionCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ForestTrustRelationshipCollisionCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ForestTrustRelationshipCollisionCollection" /> class is a read-only collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.ForestTrustRelationshipCollision" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ForestTrustRelationshipInformation.xml b/xml/System.DirectoryServices.ActiveDirectory/ForestTrustRelationshipInformation.xml
index 4ba91b66cca..1d3ae7923ba 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ForestTrustRelationshipInformation.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ForestTrustRelationshipInformation.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ForestTrustRelationshipInformation" /> class contains information about a trust relationship between two <see cref="T:System.DirectoryServices.ActiveDirectory.Forest" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/GlobalCatalog.xml b/xml/System.DirectoryServices.ActiveDirectory/GlobalCatalog.xml
index f56c742b2df..886066a1ea7 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/GlobalCatalog.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/GlobalCatalog.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.GlobalCatalog" /> class represents a global catalog server. A global catalog server is a domain controller that hosts a replica of the global catalog.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/GlobalCatalogCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/GlobalCatalogCollection.xml
index 3727d1d1028..9c6489e444f 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/GlobalCatalogCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/GlobalCatalogCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.GlobalCatalogCollection" /> class is a read-only collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.GlobalCatalog" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ReadOnlyActiveDirectorySchemaClassCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ReadOnlyActiveDirectorySchemaClassCollection.xml
index 95f68d71980..3a8e72d3f3b 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ReadOnlyActiveDirectorySchemaClassCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ReadOnlyActiveDirectorySchemaClassCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ReadOnlyActiveDirectorySchemaClassCollection" /> class is a read-only collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySchemaClass" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ReadOnlyActiveDirectorySchemaPropertyCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ReadOnlyActiveDirectorySchemaPropertyCollection.xml
index 58f8e1c310c..1ce004c13d1 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ReadOnlyActiveDirectorySchemaPropertyCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ReadOnlyActiveDirectorySchemaPropertyCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ReadOnlyActiveDirectorySchemaPropertyCollection" /> class is a read-only collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySchemaProperty" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ReadOnlyDirectoryServerCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ReadOnlyDirectoryServerCollection.xml
index a8c92ca0f8e..5e57c8bef5a 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ReadOnlyDirectoryServerCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ReadOnlyDirectoryServerCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ReadOnlyDirectoryServerCollection" /> class is a read-only collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.DirectoryServer" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ReadOnlySiteCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ReadOnlySiteCollection.xml
index ccbf5e1d757..56be877de30 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ReadOnlySiteCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ReadOnlySiteCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ReadOnlySiteCollection" /> class is a read-only collection of <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySite" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ReadOnlySiteLinkBridgeCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ReadOnlySiteLinkBridgeCollection.xml
index eaffe077256..ee8f44a4e89 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ReadOnlySiteLinkBridgeCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ReadOnlySiteLinkBridgeCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ReadOnlySiteLinkBridgeCollection" /> class is a read-only collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySiteLinkBridge" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ReadOnlySiteLinkCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ReadOnlySiteLinkCollection.xml
index b94f2a49eb6..eab02920712 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ReadOnlySiteLinkCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ReadOnlySiteLinkCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ReadOnlySiteLinkCollection" /> class is a read-only collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.ActiveDirectorySiteLink" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ReadOnlyStringCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ReadOnlyStringCollection.xml
index 504565ff5f2..5e586537a4d 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ReadOnlyStringCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ReadOnlyStringCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ReadOnlyStringCollection" /> class is a read-only collection that contains <see cref="T:System.String" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ReplicationConnection.xml b/xml/System.DirectoryServices.ActiveDirectory/ReplicationConnection.xml
index 075c262db0a..6f0b98a1418 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ReplicationConnection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ReplicationConnection.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ReplicationConnection" /> class represents a replication connection.</summary>
@@ -682,14 +678,6 @@ The servers specified in the <paramref name="context" /> and <paramref name="sou
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.DirectoryServices.ActiveDirectory.ActiveDirectorySchedule</ReturnType>
@@ -802,10 +790,6 @@ The servers specified in the <paramref name="context" /> and <paramref name="sou
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ReplicationConnectionCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ReplicationConnectionCollection.xml
index 937fad58a4c..271957d65a3 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ReplicationConnectionCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ReplicationConnectionCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ReplicationConnectionCollection" /> class is a read-only collection of <see cref="T:System.DirectoryServices.ActiveDirectory.ReplicationConnection" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ReplicationCursor.xml b/xml/System.DirectoryServices.ActiveDirectory/ReplicationCursor.xml
index fe1da6f5767..347bfa90c3d 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ReplicationCursor.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ReplicationCursor.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ReplicationCursor" /> class represents a replication operation occurrence.</summary>
@@ -135,10 +131,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ReplicationCursorCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ReplicationCursorCollection.xml
index 62597786748..071ac4f0b91 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ReplicationCursorCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ReplicationCursorCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ReplicationCursorCollection" /> class is a read-only collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.ReplicationCursor" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ReplicationFailure.xml b/xml/System.DirectoryServices.ActiveDirectory/ReplicationFailure.xml
index 6aed777b59c..21b6e8c88eb 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ReplicationFailure.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ReplicationFailure.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains information about a failed replication attempt.</summary>
@@ -153,10 +149,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ReplicationFailureCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ReplicationFailureCollection.xml
index 9488da96873..f58676c9e2a 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ReplicationFailureCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ReplicationFailureCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ReplicationFailureCollection" /> class is a read-only collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.ReplicationFailure" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ReplicationNeighbor+ReplicationNeighborOptions.xml b/xml/System.DirectoryServices.ActiveDirectory/ReplicationNeighbor+ReplicationNeighborOptions.xml
index 47c399c97f4..efd6779f78d 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ReplicationNeighbor+ReplicationNeighborOptions.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ReplicationNeighbor+ReplicationNeighborOptions.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Flags]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Flags&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the options for a <see cref="T:System.DirectoryServices.ActiveDirectory.ReplicationNeighbor" /> object.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ReplicationNeighbor.xml b/xml/System.DirectoryServices.ActiveDirectory/ReplicationNeighbor.xml
index e6fa59afa4c..553efd15a30 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ReplicationNeighbor.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ReplicationNeighbor.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ReplicationNeighbor" /> class contains information about a replication neighbor of an <see cref="T:System.DirectoryServices.ActiveDirectory.AdamInstance" /> or <see cref="T:System.DirectoryServices.ActiveDirectory.DomainController" /> object.</summary>
@@ -128,10 +124,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ReplicationNeighborCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ReplicationNeighborCollection.xml
index c5d24d9f70c..840bc12e944 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ReplicationNeighborCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ReplicationNeighborCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ReplicationNeighborCollection" /> class is a read-only collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.ReplicationNeighbor" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ReplicationOperation.xml b/xml/System.DirectoryServices.ActiveDirectory/ReplicationOperation.xml
index 1d092ab53f1..0e590e43a7e 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ReplicationOperation.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ReplicationOperation.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ReplicationOperation" /> class represents an Active Directory Domain Services replication operation.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ReplicationOperationCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/ReplicationOperationCollection.xml
index bce1bdad83b..36178d26bfb 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ReplicationOperationCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ReplicationOperationCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ReplicationOperationCollection" /> class is a read-only collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.ReplicationOperation" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/ReplicationOperationInformation.xml b/xml/System.DirectoryServices.ActiveDirectory/ReplicationOperationInformation.xml
index a80ffd8632d..e355e2ce076 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/ReplicationOperationInformation.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/ReplicationOperationInformation.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.ReplicationOperationInformation" /> class contains information about an Active Directory Domain Services replication operation.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/SyncFromAllServersErrorInformation.xml b/xml/System.DirectoryServices.ActiveDirectory/SyncFromAllServersErrorInformation.xml
index 001e66d40c9..cab83f0b2ef 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/SyncFromAllServersErrorInformation.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/SyncFromAllServersErrorInformation.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains information about a <see cref="T:System.DirectoryServices.ActiveDirectory.SyncFromAllServersOperationException" /> exception.</summary>
@@ -100,10 +96,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/SyncFromAllServersOperationException.xml b/xml/System.DirectoryServices.ActiveDirectory/SyncFromAllServersOperationException.xml
index 7fd94fb5ecc..c240fc671d8 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/SyncFromAllServersOperationException.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/SyncFromAllServersOperationException.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -88,12 +84,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
       </Parameters>
@@ -155,12 +145,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
         <Parameter Name="inner" Type="System.Exception" />
@@ -188,12 +172,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
         <Parameter Name="inner" Type="System.Exception" />
diff --git a/xml/System.DirectoryServices.ActiveDirectory/TopLevelName.xml b/xml/System.DirectoryServices.ActiveDirectory/TopLevelName.xml
index 615df9c2f1c..985820a93df 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/TopLevelName.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/TopLevelName.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains forest trust account information about a top-level domain in a <see cref="T:System.DirectoryServices.ActiveDirectory.Forest" />.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/TopLevelNameCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/TopLevelNameCollection.xml
index 3fc074b5d19..2c9bb3f8daa 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/TopLevelNameCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/TopLevelNameCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.TopLevelNameCollection" /> class is a read-only collection that contains <see cref="T:System.DirectoryServices.ActiveDirectory.TopLevelName" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/TrustRelationshipInformation.xml b/xml/System.DirectoryServices.ActiveDirectory/TrustRelationshipInformation.xml
index 46da4f3caa1..9b5ebc0921d 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/TrustRelationshipInformation.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/TrustRelationshipInformation.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.TrustRelationshipInformation" /> class contains information for a trust relationship between a pair of <see cref="T:System.DirectoryServices.ActiveDirectory.Domain" /> or <see cref="T:System.DirectoryServices.ActiveDirectory.Forest" /> objects.</summary>
diff --git a/xml/System.DirectoryServices.ActiveDirectory/TrustRelationshipInformationCollection.xml b/xml/System.DirectoryServices.ActiveDirectory/TrustRelationshipInformationCollection.xml
index a437f0b954f..d7254dd0d7d 100644
--- a/xml/System.DirectoryServices.ActiveDirectory/TrustRelationshipInformationCollection.xml
+++ b/xml/System.DirectoryServices.ActiveDirectory/TrustRelationshipInformationCollection.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectory.TrustRelationshipInformationCollection" /> class contains a collection of <see cref="T:System.DirectoryServices.ActiveDirectory.TrustRelationshipInformation" /> objects.</summary>
diff --git a/xml/System.DirectoryServices/ActiveDirectoryAccessRule.xml b/xml/System.DirectoryServices/ActiveDirectoryAccessRule.xml
index 36fd7a01ef5..9a9df2fcbb2 100644
--- a/xml/System.DirectoryServices/ActiveDirectoryAccessRule.xml
+++ b/xml/System.DirectoryServices/ActiveDirectoryAccessRule.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectoryAccessRule" /> class is used to represent an access control entry (ACE) in the discretionary access control list (DACL) of an Active Directory Domain Services object.</summary>
diff --git a/xml/System.DirectoryServices/ActiveDirectoryAuditRule.xml b/xml/System.DirectoryServices/ActiveDirectoryAuditRule.xml
index 219d61df443..68cf1ef2da1 100644
--- a/xml/System.DirectoryServices/ActiveDirectoryAuditRule.xml
+++ b/xml/System.DirectoryServices/ActiveDirectoryAuditRule.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ActiveDirectoryAuditRule" /> is used to set an access control entry (ACE) on a system access control list (SACL). The <see cref="T:System.DirectoryServices.ActiveDirectoryAccessRule" /> contains the trustee, which is represented as an <see cref="P:System.Security.AccessControl.AuthorizationRule.IdentityReference" /> object. It also contains information about the access control type, access mask, and other properties such as inheritance flags. This rule is set on an <see cref="T:System.DirectoryServices.ActiveDirectorySecurity" /> object. After the <see cref="T:System.DirectoryServices.ActiveDirectorySecurity" /> is committed to the directory store, it will modify the security descriptor object according to the rules that are set on <see cref="T:System.DirectoryServices.ActiveDirectoryAuditRule" />.</summary>
diff --git a/xml/System.DirectoryServices/ActiveDirectorySecurity.xml b/xml/System.DirectoryServices/ActiveDirectorySecurity.xml
index d35b32f8a34..6b6a0dd14ec 100644
--- a/xml/System.DirectoryServices/ActiveDirectorySecurity.xml
+++ b/xml/System.DirectoryServices/ActiveDirectorySecurity.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Uses the object security layer of the managed ACL library to wrap access control functionality for directory objects.</summary>
diff --git a/xml/System.DirectoryServices/CreateChildAccessRule.xml b/xml/System.DirectoryServices/CreateChildAccessRule.xml
index 64997af6773..4ae571460c4 100644
--- a/xml/System.DirectoryServices/CreateChildAccessRule.xml
+++ b/xml/System.DirectoryServices/CreateChildAccessRule.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.CreateChildAccessRule" /> class represents a specific type of access rule that is used to allow or deny an Active Directory Domain Services object the right to create child objects.</summary>
diff --git a/xml/System.DirectoryServices/DeleteChildAccessRule.xml b/xml/System.DirectoryServices/DeleteChildAccessRule.xml
index 06d7a692b81..bf95b04ac5a 100644
--- a/xml/System.DirectoryServices/DeleteChildAccessRule.xml
+++ b/xml/System.DirectoryServices/DeleteChildAccessRule.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.DeleteChildAccessRule" /> class represents a specific type of access rule that is used to allow or deny an Active Directory Domain Services object the right to delete child objects.</summary>
diff --git a/xml/System.DirectoryServices/DeleteTreeAccessRule.xml b/xml/System.DirectoryServices/DeleteTreeAccessRule.xml
index 16426647d45..becc3445f84 100644
--- a/xml/System.DirectoryServices/DeleteTreeAccessRule.xml
+++ b/xml/System.DirectoryServices/DeleteTreeAccessRule.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.DeleteTreeAccessRule" /> class represents a specific type of access rule that is used to allow or deny an Active Directory Domain Services object the right to delete all child objects, regardless of the permissions that the child objects have.</summary>
diff --git a/xml/System.DirectoryServices/DirectoryEntries.xml b/xml/System.DirectoryServices/DirectoryEntries.xml
index 312ddc6b53f..b7c6b766f3a 100644
--- a/xml/System.DirectoryServices/DirectoryEntries.xml
+++ b/xml/System.DirectoryServices/DirectoryEntries.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains a collection of <see cref="T:System.DirectoryServices.DirectoryEntry" /> objects.</summary>
diff --git a/xml/System.DirectoryServices/DirectoryEntry.xml b/xml/System.DirectoryServices/DirectoryEntry.xml
index 75edb7d77d3..3fd8546c703 100644
--- a/xml/System.DirectoryServices/DirectoryEntry.xml
+++ b/xml/System.DirectoryServices/DirectoryEntry.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.DirectoryServices.DSDescription("DirectoryEntryDesc")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.DirectoryServices.DSDescription("DirectoryEntryDesc")&gt;]</AttributeName>
@@ -143,12 +139,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="path" Type="System.String" />
       </Parameters>
@@ -247,12 +237,6 @@ int main()
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="path" Type="System.String" />
         <Parameter Name="username" Type="System.String" />
@@ -283,12 +267,6 @@ int main()
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="path" Type="System.String" />
         <Parameter Name="username" Type="System.String" />
@@ -846,12 +824,6 @@ Console::WriteLine("The Native GUID of the ADS object: {0}",
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -1375,10 +1347,6 @@ Console::WriteLine("The Native GUID of the ADS object: {0}",
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.ComponentModel.Browsable(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.Browsable(false)&gt;]</AttributeName>
@@ -1503,10 +1471,6 @@ Console::WriteLine("Parent is :{0}", myDirectoryEntry->Parent->Path);
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.ComponentModel.Browsable(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.Browsable(false)&gt;]</AttributeName>
@@ -1839,12 +1803,6 @@ DirectoryEntry domain = new DirectoryEntry("LDAP://" + str);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2180,14 +2138,6 @@ if (!String::Compare(mySchemaEntry->Name, S"container"))
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.ComponentModel.Browsable(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.Browsable(false)&gt;]</AttributeName>
diff --git a/xml/System.DirectoryServices/DirectoryEntryConfiguration.xml b/xml/System.DirectoryServices/DirectoryEntryConfiguration.xml
index e99de0deaf9..01277979015 100644
--- a/xml/System.DirectoryServices/DirectoryEntryConfiguration.xml
+++ b/xml/System.DirectoryServices/DirectoryEntryConfiguration.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.DirectoryEntryConfiguration" /> class provides a direct way to specify and obtain provider-specific options for manipulating a directory object. Typically, the options apply to search operations of the underlying directory store. The supported options are provider-specific.</summary>
diff --git a/xml/System.DirectoryServices/DirectorySearcher.xml b/xml/System.DirectoryServices/DirectorySearcher.xml
index 89b4ef949d1..45f1fc32112 100644
--- a/xml/System.DirectoryServices/DirectorySearcher.xml
+++ b/xml/System.DirectoryServices/DirectorySearcher.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.DirectoryServices.DSDescription("DirectorySearcherDesc")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.DirectoryServices.DSDescription("DirectorySearcherDesc")&gt;]</AttributeName>
@@ -544,14 +540,6 @@ SearchResultCollection res = src.FindAll();
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5">
           <AttributeName Language="C#">[System.ComponentModel.TypeConverter("System.Diagnostics.Design.StringValueConverter, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.TypeConverter("System.Diagnostics.Design.StringValueConverter, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")&gt;]</AttributeName>
@@ -994,12 +982,6 @@ SearchResultCollection res = src.FindAll();
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DirectoryServices.SearchResultCollection</ReturnType>
       </ReturnValue>
@@ -1123,10 +1105,6 @@ SearchResultCollection res = src.FindAll();
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)&gt;]</AttributeName>
@@ -1575,14 +1553,6 @@ SearchResultCollection res = src.FindAll();
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)&gt;]</AttributeName>
diff --git a/xml/System.DirectoryServices/DirectoryServicesCOMException.xml b/xml/System.DirectoryServices/DirectoryServicesCOMException.xml
index f71663b1550..41cb49e84f7 100644
--- a/xml/System.DirectoryServices/DirectoryServicesCOMException.xml
+++ b/xml/System.DirectoryServices/DirectoryServicesCOMException.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -119,10 +115,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
@@ -238,10 +230,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.DirectoryServices/DirectoryServicesPermission.xml b/xml/System.DirectoryServices/DirectoryServicesPermission.xml
index 8d3f2c07e1e..e90c21644f3 100644
--- a/xml/System.DirectoryServices/DirectoryServicesPermission.xml
+++ b/xml/System.DirectoryServices/DirectoryServicesPermission.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.DirectoryServices/DirectoryServicesPermissionAttribute.xml b/xml/System.DirectoryServices/DirectoryServicesPermissionAttribute.xml
index 327642e600a..753849862bb 100644
--- a/xml/System.DirectoryServices/DirectoryServicesPermissionAttribute.xml
+++ b/xml/System.DirectoryServices/DirectoryServicesPermissionAttribute.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.DirectoryServices/DirectoryServicesPermissionEntry.xml b/xml/System.DirectoryServices/DirectoryServicesPermissionEntry.xml
index b89bf4d14b3..24adf7b564d 100644
--- a/xml/System.DirectoryServices/DirectoryServicesPermissionEntry.xml
+++ b/xml/System.DirectoryServices/DirectoryServicesPermissionEntry.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.DirectoryServices/DirectoryServicesPermissionEntryCollection.xml b/xml/System.DirectoryServices/DirectoryServicesPermissionEntryCollection.xml
index 1e4aa5b9237..8a7c4998cb0 100644
--- a/xml/System.DirectoryServices/DirectoryServicesPermissionEntryCollection.xml
+++ b/xml/System.DirectoryServices/DirectoryServicesPermissionEntryCollection.xml
@@ -308,14 +308,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.DirectoryServices.DirectoryServicesPermissionEntry</ReturnType>
@@ -391,12 +383,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -433,12 +419,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -475,12 +455,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -519,12 +493,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.DirectoryServices/DirectorySynchronization.xml b/xml/System.DirectoryServices/DirectorySynchronization.xml
index 565d8d2b76e..6c3dd891c6b 100644
--- a/xml/System.DirectoryServices/DirectorySynchronization.xml
+++ b/xml/System.DirectoryServices/DirectorySynchronization.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies how to synchronize a directory within a domain.</summary>
@@ -192,12 +188,6 @@ foreach(SearchResult res in src.FindAll() )
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DirectoryServices.DirectorySynchronization</ReturnType>
       </ReturnValue>
@@ -223,12 +213,6 @@ foreach(SearchResult res in src.FindAll() )
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.DirectoryServices/DirectoryVirtualListView.xml b/xml/System.DirectoryServices/DirectoryVirtualListView.xml
index 9c2f864ad74..b4220231ff5 100644
--- a/xml/System.DirectoryServices/DirectoryVirtualListView.xml
+++ b/xml/System.DirectoryServices/DirectoryVirtualListView.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.DirectoryVirtualListView" /> class specifies how to conduct a virtual list view search. A virtual list view search enables users to view search results as address-book style virtual list views. It is specifically designed for very large result sets. Search data is retrieved in contiguous subsets of a sorted directory search.</summary>
@@ -459,14 +455,6 @@ foreach(SearchResult res in src.FindAll() )
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5">
           <AttributeName Language="C#">[System.ComponentModel.TypeConverter("System.Diagnostics.Design.StringValueConverter, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.TypeConverter("System.Diagnostics.Design.StringValueConverter, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")&gt;]</AttributeName>
diff --git a/xml/System.DirectoryServices/DirectoryVirtualListViewContext.xml b/xml/System.DirectoryServices/DirectoryVirtualListViewContext.xml
index a34d4f06408..4ac73290478 100644
--- a/xml/System.DirectoryServices/DirectoryVirtualListViewContext.xml
+++ b/xml/System.DirectoryServices/DirectoryVirtualListViewContext.xml
@@ -57,12 +57,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DirectoryServices.DirectoryVirtualListViewContext</ReturnType>
       </ReturnValue>
diff --git a/xml/System.DirectoryServices/ExtendedRightAccessRule.xml b/xml/System.DirectoryServices/ExtendedRightAccessRule.xml
index caa7bc2c510..439fd715d8a 100644
--- a/xml/System.DirectoryServices/ExtendedRightAccessRule.xml
+++ b/xml/System.DirectoryServices/ExtendedRightAccessRule.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a specific type of access rule that is used to allow or deny an Active Directory object an extended right. Extended rights are special operations that are not covered by the standard set of access rights. An example of an extended right is <see href="https://learn.microsoft.com/windows/desktop/adschema/r-send-as">Send-As</see>, which gives a user the right to send email for another user. For a list of possible extended rights, see the <see href="https://learn.microsoft.com/windows/desktop/adschema/extended-rights">Extended Rights</see> article. For more information about extended rights, see the <see href="https://learn.microsoft.com/windows/desktop/adschema/control-access-rights">Control Access Rights</see>.</summary>
diff --git a/xml/System.DirectoryServices/ListChildrenAccessRule.xml b/xml/System.DirectoryServices/ListChildrenAccessRule.xml
index d89477ee64f..1a6ca18319d 100644
--- a/xml/System.DirectoryServices/ListChildrenAccessRule.xml
+++ b/xml/System.DirectoryServices/ListChildrenAccessRule.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.ListChildrenAccessRule" /> class represents a specific type of access rule that is used to allow or deny an Active Directory Domain Services object the right to list child objects.</summary>
diff --git a/xml/System.DirectoryServices/PropertyAccessRule.xml b/xml/System.DirectoryServices/PropertyAccessRule.xml
index 1c98d4a4105..d960aea816e 100644
--- a/xml/System.DirectoryServices/PropertyAccessRule.xml
+++ b/xml/System.DirectoryServices/PropertyAccessRule.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.PropertyAccessRule" /> class represents a specific type of access rule that is used to allow or deny access to an Active Directory Domain Services property.</summary>
diff --git a/xml/System.DirectoryServices/PropertyCollection.xml b/xml/System.DirectoryServices/PropertyCollection.xml
index cc7debe236a..76da65b1fb8 100644
--- a/xml/System.DirectoryServices/PropertyCollection.xml
+++ b/xml/System.DirectoryServices/PropertyCollection.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.PropertyCollection" /> class contains the properties of a <see cref="T:System.DirectoryServices.DirectoryEntry" />.</summary>
diff --git a/xml/System.DirectoryServices/PropertySetAccessRule.xml b/xml/System.DirectoryServices/PropertySetAccessRule.xml
index ff48c966053..726bd2eca64 100644
--- a/xml/System.DirectoryServices/PropertySetAccessRule.xml
+++ b/xml/System.DirectoryServices/PropertySetAccessRule.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.PropertySetAccessRule" /> class represents a specific type of access rule that is used to allow or deny access to an Active Directory Domain Services property set. For a list of property sets that are defined for Active Directory Domain Services, see the <see href="https://learn.microsoft.com/windows/desktop/adschema/property-sets">Property Sets</see> article.</summary>
diff --git a/xml/System.DirectoryServices/PropertyValueCollection.xml b/xml/System.DirectoryServices/PropertyValueCollection.xml
index 87080a278d6..64875600f21 100644
--- a/xml/System.DirectoryServices/PropertyValueCollection.xml
+++ b/xml/System.DirectoryServices/PropertyValueCollection.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains the values of a <see cref="T:System.DirectoryServices.DirectoryEntry" /> property.</summary>
@@ -89,12 +85,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -459,10 +449,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.DirectoryServices/ResultPropertyCollection.xml b/xml/System.DirectoryServices/ResultPropertyCollection.xml
index 9e6fae7d254..643e5accba9 100644
--- a/xml/System.DirectoryServices/ResultPropertyCollection.xml
+++ b/xml/System.DirectoryServices/ResultPropertyCollection.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains the properties of a <see cref="T:System.DirectoryServices.SearchResult" /> instance.</summary>
diff --git a/xml/System.DirectoryServices/ResultPropertyValueCollection.xml b/xml/System.DirectoryServices/ResultPropertyValueCollection.xml
index 869c747ddcd..f4cbada39a2 100644
--- a/xml/System.DirectoryServices/ResultPropertyValueCollection.xml
+++ b/xml/System.DirectoryServices/ResultPropertyValueCollection.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains the values of a <see cref="T:System.DirectoryServices.SearchResult" /> property.</summary>
@@ -57,12 +53,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -131,12 +121,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.DirectoryServices/SchemaNameCollection.xml b/xml/System.DirectoryServices/SchemaNameCollection.xml
index f2659d975b5..3181aa5f52f 100644
--- a/xml/System.DirectoryServices/SchemaNameCollection.xml
+++ b/xml/System.DirectoryServices/SchemaNameCollection.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains a list of the schema names that the <see cref="P:System.DirectoryServices.DirectoryEntries.SchemaFilter" /> property of a <see cref="T:System.DirectoryServices.DirectoryEntries" /> object can use.</summary>
@@ -90,12 +86,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -287,12 +277,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IEnumerator</ReturnType>
       </ReturnValue>
diff --git a/xml/System.DirectoryServices/SearchResult.xml b/xml/System.DirectoryServices/SearchResult.xml
index e39fc0f42a4..88324cc53a7 100644
--- a/xml/System.DirectoryServices/SearchResult.xml
+++ b/xml/System.DirectoryServices/SearchResult.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.SearchResult" /> class encapsulates a node in the Active Directory Domain Services hierarchy that is returned during a search through <see cref="T:System.DirectoryServices.DirectorySearcher" />.</summary>
diff --git a/xml/System.DirectoryServices/SearchResultCollection.xml b/xml/System.DirectoryServices/SearchResultCollection.xml
index 70e23514761..d2c925c132b 100644
--- a/xml/System.DirectoryServices/SearchResultCollection.xml
+++ b/xml/System.DirectoryServices/SearchResultCollection.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.DirectoryServices.SearchResultCollection" /> class contains the <see cref="T:System.DirectoryServices.SearchResult" /> instances that the Active Directory hierarchy returned during a <see cref="T:System.DirectoryServices.DirectorySearcher" /> query.</summary>
diff --git a/xml/System.DirectoryServices/SortOption.xml b/xml/System.DirectoryServices/SortOption.xml
index b87bb4652d2..0b5de326148 100644
--- a/xml/System.DirectoryServices/SortOption.xml
+++ b/xml/System.DirectoryServices/SortOption.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies how to sort the results of a search.</summary>
@@ -74,12 +70,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="propertyName" Type="System.String" />
         <Parameter Name="direction" Type="System.DirectoryServices.SortDirection" />
diff --git a/xml/System.Drawing.Design/BitmapEditor.xml b/xml/System.Drawing.Design/BitmapEditor.xml
index 1363921a715..c3a25be1d12 100644
--- a/xml/System.Drawing.Design/BitmapEditor.xml
+++ b/xml/System.Drawing.Design/BitmapEditor.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a user interface for selecting bitmap files in a property browser.</summary>
diff --git a/xml/System.Drawing.Design/CategoryNameCollection.xml b/xml/System.Drawing.Design/CategoryNameCollection.xml
index 9366b28b5fa..cb41510244b 100644
--- a/xml/System.Drawing.Design/CategoryNameCollection.xml
+++ b/xml/System.Drawing.Design/CategoryNameCollection.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of category name strings.</summary>
diff --git a/xml/System.Drawing.Design/ColorEditor.xml b/xml/System.Drawing.Design/ColorEditor.xml
index 395941f8f0d..e4633b8f0a8 100644
--- a/xml/System.Drawing.Design/ColorEditor.xml
+++ b/xml/System.Drawing.Design/ColorEditor.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a <see cref="T:System.Drawing.Design.UITypeEditor" /> for visually picking a color.</summary>
@@ -123,12 +119,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -187,12 +177,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Design.UITypeEditorEditStyle</ReturnType>
       </ReturnValue>
@@ -234,12 +218,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -281,12 +259,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing.Design/ContentAlignmentEditor.xml b/xml/System.Drawing.Design/ContentAlignmentEditor.xml
index a1106b28755..086e5e66faa 100644
--- a/xml/System.Drawing.Design/ContentAlignmentEditor.xml
+++ b/xml/System.Drawing.Design/ContentAlignmentEditor.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a <see cref="T:System.Drawing.Design.UITypeEditor" /> for visually editing content alignment.</summary>
diff --git a/xml/System.Drawing.Design/CursorEditor.xml b/xml/System.Drawing.Design/CursorEditor.xml
index fae09eb1f55..957d396afba 100644
--- a/xml/System.Drawing.Design/CursorEditor.xml
+++ b/xml/System.Drawing.Design/CursorEditor.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a <see cref="T:System.Drawing.Design.UITypeEditor" /> that can perform default file searching for cursor (.cur) files.</summary>
diff --git a/xml/System.Drawing.Design/FontEditor.xml b/xml/System.Drawing.Design/FontEditor.xml
index 1a1eb8891a8..968fccb107f 100644
--- a/xml/System.Drawing.Design/FontEditor.xml
+++ b/xml/System.Drawing.Design/FontEditor.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a user interface to select and configure a <see cref="T:System.Drawing.Font" /> object.</summary>
diff --git a/xml/System.Drawing.Design/FontNameEditor.xml b/xml/System.Drawing.Design/FontNameEditor.xml
index ab86cb3fe66..ee176fdc575 100644
--- a/xml/System.Drawing.Design/FontNameEditor.xml
+++ b/xml/System.Drawing.Design/FontNameEditor.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a <see cref="T:System.Drawing.Design.UITypeEditor" /> that paints a glyph for the font name.</summary>
@@ -123,12 +119,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing.Design/IPropertyValueUIService.xml b/xml/System.Drawing.Design/IPropertyValueUIService.xml
index e5fe609aec0..4886d14dd88 100644
--- a/xml/System.Drawing.Design/IPropertyValueUIService.xml
+++ b/xml/System.Drawing.Design/IPropertyValueUIService.xml
@@ -22,12 +22,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an interface to manage the images, ToolTips, and event handlers for the properties of a component displayed in a property browser.</summary>
     <remarks>
@@ -196,14 +190,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Drawing.Design/IToolboxItemProvider.xml b/xml/System.Drawing.Design/IToolboxItemProvider.xml
index dcc07203eab..e539b7d1f8d 100644
--- a/xml/System.Drawing.Design/IToolboxItemProvider.xml
+++ b/xml/System.Drawing.Design/IToolboxItemProvider.xml
@@ -21,12 +21,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Exposes a collection of toolbox items.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Drawing.Design/IconEditor.xml b/xml/System.Drawing.Design/IconEditor.xml
index 76abf58c6e5..b0e5a65c4ab 100644
--- a/xml/System.Drawing.Design/IconEditor.xml
+++ b/xml/System.Drawing.Design/IconEditor.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a <see cref="T:System.Drawing.Design.UITypeEditor" /> for visually choosing an icon.</summary>
@@ -113,12 +109,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -228,12 +218,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -292,12 +276,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Design.UITypeEditorEditStyle</ReturnType>
       </ReturnValue>
@@ -417,12 +395,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing.Design/ImageEditor.xml b/xml/System.Drawing.Design/ImageEditor.xml
index a8787e10786..0162c2bf0bf 100644
--- a/xml/System.Drawing.Design/ImageEditor.xml
+++ b/xml/System.Drawing.Design/ImageEditor.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a user interface for selecting an image for a property in a property grid.</summary>
@@ -140,12 +136,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -241,12 +231,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -305,12 +289,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Design.UITypeEditorEditStyle</ReturnType>
       </ReturnValue>
@@ -476,12 +454,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing.Design/MetafileEditor.xml b/xml/System.Drawing.Design/MetafileEditor.xml
index 69296c42315..fddfbadbe2c 100644
--- a/xml/System.Drawing.Design/MetafileEditor.xml
+++ b/xml/System.Drawing.Design/MetafileEditor.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a <see cref="T:System.Drawing.Design.UITypeEditor" /> that can perform default file searching for metafile (.emf) files.</summary>
diff --git a/xml/System.Drawing.Design/PaintValueEventArgs.xml b/xml/System.Drawing.Design/PaintValueEventArgs.xml
index b18335f4264..3c6fbc31cf4 100644
--- a/xml/System.Drawing.Design/PaintValueEventArgs.xml
+++ b/xml/System.Drawing.Design/PaintValueEventArgs.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="M:System.Drawing.Design.UITypeEditor.PaintValue(System.Object,System.Drawing.Graphics,System.Drawing.Rectangle)" /> method.</summary>
@@ -212,10 +208,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Graphics</ReturnType>
diff --git a/xml/System.Drawing.Design/PropertyValueUIItem.xml b/xml/System.Drawing.Design/PropertyValueUIItem.xml
index caaa50f18dc..d0adc0567a0 100644
--- a/xml/System.Drawing.Design/PropertyValueUIItem.xml
+++ b/xml/System.Drawing.Design/PropertyValueUIItem.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about a property displayed in the Properties window, including the associated event handler, pop-up information string, and the icon to display for the property.</summary>
@@ -260,10 +256,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Drawing.Design/ToolboxComponentsCreatingEventArgs.xml b/xml/System.Drawing.Design/ToolboxComponentsCreatingEventArgs.xml
index 67d3a903fe9..03c3fd7c20f 100644
--- a/xml/System.Drawing.Design/ToolboxComponentsCreatingEventArgs.xml
+++ b/xml/System.Drawing.Design/ToolboxComponentsCreatingEventArgs.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Drawing.Design.ToolboxItem.ComponentsCreating" /> event that occurs when components are added to the toolbox.</summary>
diff --git a/xml/System.Drawing.Design/ToolboxItem.xml b/xml/System.Drawing.Design/ToolboxItem.xml
index 919b23370d1..f54ef52af7c 100644
--- a/xml/System.Drawing.Design/ToolboxItem.xml
+++ b/xml/System.Drawing.Design/ToolboxItem.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a base implementation of a toolbox item.</summary>
@@ -473,10 +469,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -843,12 +835,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -904,14 +890,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -997,14 +975,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.ICollection</ReturnType>
@@ -1430,12 +1400,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1487,12 +1451,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1585,10 +1543,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IDictionary</ReturnType>
@@ -1631,12 +1585,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1680,12 +1628,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1735,10 +1677,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1778,14 +1716,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1829,12 +1759,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1953,10 +1877,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Drawing.Design/ToolboxItemCollection.xml b/xml/System.Drawing.Design/ToolboxItemCollection.xml
index ac98a141acc..c7387f25c23 100644
--- a/xml/System.Drawing.Design/ToolboxItemCollection.xml
+++ b/xml/System.Drawing.Design/ToolboxItemCollection.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of toolbox items.</summary>
diff --git a/xml/System.Drawing.Design/UITypeEditor.xml b/xml/System.Drawing.Design/UITypeEditor.xml
index 8dc9f7e2668..79769f2b0b9 100644
--- a/xml/System.Drawing.Design/UITypeEditor.xml
+++ b/xml/System.Drawing.Design/UITypeEditor.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a base class that can be used to design value editors that can provide a user interface (UI) for representing and editing the values of objects of the supported data types.</summary>
@@ -492,12 +488,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -551,12 +541,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing.Drawing2D/Blend.xml b/xml/System.Drawing.Drawing2D/Blend.xml
index 454e358aa5c..c288ff43700 100644
--- a/xml/System.Drawing.Drawing2D/Blend.xml
+++ b/xml/System.Drawing.Drawing2D/Blend.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines a blend pattern for a <see cref="T:System.Drawing.Drawing2D.LinearGradientBrush" /> object. This class cannot be inherited.</summary>
diff --git a/xml/System.Drawing.Drawing2D/ColorBlend.xml b/xml/System.Drawing.Drawing2D/ColorBlend.xml
index f5a37fac57d..8cdd5bef558 100644
--- a/xml/System.Drawing.Drawing2D/ColorBlend.xml
+++ b/xml/System.Drawing.Drawing2D/ColorBlend.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines arrays of colors and positions used for interpolating color blending in a multicolor gradient. This class cannot be inherited.</summary>
diff --git a/xml/System.Drawing.Drawing2D/CustomLineCap.xml b/xml/System.Drawing.Drawing2D/CustomLineCap.xml
index 79dc6418cac..f8cd2b069f9 100644
--- a/xml/System.Drawing.Drawing2D/CustomLineCap.xml
+++ b/xml/System.Drawing.Drawing2D/CustomLineCap.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates a custom user-defined line cap.</summary>
@@ -102,10 +98,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -165,10 +157,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -221,12 +209,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="fillPath" Type="System.Drawing.Drawing2D.GraphicsPath" />
         <Parameter Name="strokePath" Type="System.Drawing.Drawing2D.GraphicsPath" />
@@ -364,12 +346,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing.Drawing2D/GraphicsPath.xml b/xml/System.Drawing.Drawing2D/GraphicsPath.xml
index 6bfbf8d9bba..f0c1203be30 100644
--- a/xml/System.Drawing.Drawing2D/GraphicsPath.xml
+++ b/xml/System.Drawing.Drawing2D/GraphicsPath.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a series of connected lines and curves. This class cannot be inherited.</summary>
@@ -1265,12 +1261,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1310,12 +1300,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1469,12 +1453,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1505,12 +1483,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1668,12 +1640,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1702,12 +1668,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1849,12 +1809,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1885,12 +1839,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2609,12 +2557,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2654,12 +2596,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3071,12 +3007,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3116,12 +3046,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3392,12 +3316,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3437,12 +3355,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4200,10 +4112,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -4253,12 +4161,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4407,10 +4309,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -4466,12 +4364,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.RectangleF</ReturnType>
       </ReturnValue>
@@ -4559,12 +4451,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -4593,12 +4479,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -5237,12 +5117,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5295,12 +5169,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5445,12 +5313,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5515,12 +5377,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6259,12 +6115,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing.Drawing2D/GraphicsPathIterator.xml b/xml/System.Drawing.Drawing2D/GraphicsPathIterator.xml
index 345eb7beb41..b3b6ac93b9b 100644
--- a/xml/System.Drawing.Drawing2D/GraphicsPathIterator.xml
+++ b/xml/System.Drawing.Drawing2D/GraphicsPathIterator.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the ability to iterate through subpaths in a <see cref="T:System.Drawing.Drawing2D.GraphicsPath" /> and test the types of shapes contained in each subpath. This class cannot be inherited.</summary>
@@ -82,12 +78,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="path" Type="System.Drawing.Drawing2D.GraphicsPath" />
       </Parameters>
@@ -121,12 +111,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -311,12 +295,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -519,12 +497,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -740,12 +712,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing.Drawing2D/HatchBrush.xml b/xml/System.Drawing.Drawing2D/HatchBrush.xml
index 9d6f4806f84..1dc778696a2 100644
--- a/xml/System.Drawing.Drawing2D/HatchBrush.xml
+++ b/xml/System.Drawing.Drawing2D/HatchBrush.xml
@@ -216,12 +216,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing.Drawing2D/LinearGradientBrush.xml b/xml/System.Drawing.Drawing2D/LinearGradientBrush.xml
index 991ce9ce781..5d14c4ec07a 100644
--- a/xml/System.Drawing.Drawing2D/LinearGradientBrush.xml
+++ b/xml/System.Drawing.Drawing2D/LinearGradientBrush.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates a <see cref="T:System.Drawing.Brush" /> with a linear gradient. This class cannot be inherited.</summary>
@@ -480,14 +476,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Drawing.Drawing2D/Matrix.xml b/xml/System.Drawing.Drawing2D/Matrix.xml
index 839022d04b6..5f845858553 100644
--- a/xml/System.Drawing.Drawing2D/Matrix.xml
+++ b/xml/System.Drawing.Drawing2D/Matrix.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates a 3-by-3 affine matrix that represents a geometric transform. This class cannot be inherited.</summary>
@@ -142,12 +138,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="rect" Type="System.Drawing.Rectangle" />
         <Parameter Name="plgpts" Type="System.Drawing.Point[]">
@@ -200,12 +190,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="rect" Type="System.Drawing.RectangleF" />
         <Parameter Name="plgpts" Type="System.Drawing.PointF[]">
@@ -298,12 +282,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Drawing2D.Matrix</ReturnType>
       </ReturnValue>
@@ -386,10 +364,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Single[]</ReturnType>
@@ -432,12 +406,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -697,10 +665,6 @@ Matrix myMatrix = new Matrix(3, 5, 1, 2, 2, 4);
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -749,12 +713,6 @@ Matrix myMatrix = new Matrix(3, 5, 1, 2, 2, 4);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1464,12 +1422,6 @@ Matrix myMatrix = new Matrix(3, 5, 1, 2, 2, 4);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1539,12 +1491,6 @@ Matrix myMatrix = new Matrix(3, 5, 1, 2, 2, 4);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1686,12 +1632,6 @@ Matrix myMatrix = new Matrix(3, 5, 1, 2, 2, 4);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1764,12 +1704,6 @@ Matrix myMatrix = new Matrix(3, 5, 1, 2, 2, 4);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2023,10 +1957,6 @@ Matrix myMatrix = new Matrix(3, 5, 1, 2, 2, 4);
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Drawing.Drawing2D/PathData.xml b/xml/System.Drawing.Drawing2D/PathData.xml
index 0b895045a22..59dabbcf58d 100644
--- a/xml/System.Drawing.Drawing2D/PathData.xml
+++ b/xml/System.Drawing.Drawing2D/PathData.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains the graphical data that makes up a <see cref="T:System.Drawing.Drawing2D.GraphicsPath" /> object. This class cannot be inherited.</summary>
diff --git a/xml/System.Drawing.Drawing2D/PathGradientBrush.xml b/xml/System.Drawing.Drawing2D/PathGradientBrush.xml
index d9158f0a608..f0b493ece1d 100644
--- a/xml/System.Drawing.Drawing2D/PathGradientBrush.xml
+++ b/xml/System.Drawing.Drawing2D/PathGradientBrush.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates a <see cref="T:System.Drawing.Brush" /> object that fills the interior of a <see cref="T:System.Drawing.Drawing2D.GraphicsPath" /> object with a gradient. This class cannot be inherited.</summary>
@@ -219,12 +215,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="points" Type="System.ReadOnlySpan&lt;System.Drawing.Point&gt;" Index="0" FrameworkAlternate="net-9.0;windowsdesktop-9.0">
           <Attributes>
@@ -261,12 +251,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="points" Type="System.ReadOnlySpan&lt;System.Drawing.PointF&gt;" Index="0" FrameworkAlternate="net-9.0;windowsdesktop-9.0">
           <Attributes>
@@ -303,12 +287,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="wrapMode" Type="System.Drawing.Drawing2D.WrapMode" Index="0" FrameworkAlternate="net-9.0;windowsdesktop-9.0" />
         <Parameter Name="points" Type="System.ReadOnlySpan&lt;System.Drawing.Point&gt;" Index="1" FrameworkAlternate="net-9.0;windowsdesktop-9.0">
@@ -347,12 +325,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="wrapMode" Type="System.Drawing.Drawing2D.WrapMode" Index="0" FrameworkAlternate="net-9.0;windowsdesktop-9.0" />
         <Parameter Name="points" Type="System.ReadOnlySpan&lt;System.Drawing.PointF&gt;" Index="1" FrameworkAlternate="net-9.0;windowsdesktop-9.0">
diff --git a/xml/System.Drawing.Drawing2D/RegionData.xml b/xml/System.Drawing.Drawing2D/RegionData.xml
index eeac105eea1..1146e78861a 100644
--- a/xml/System.Drawing.Drawing2D/RegionData.xml
+++ b/xml/System.Drawing.Drawing2D/RegionData.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates the data that makes up a <see cref="T:System.Drawing.Region" /> object. This class cannot be inherited.</summary>
diff --git a/xml/System.Drawing.Imaging.Effects/ColorLookupTableEffect.xml b/xml/System.Drawing.Imaging.Effects/ColorLookupTableEffect.xml
index bc4ab6761fd..a22cde98dd6 100644
--- a/xml/System.Drawing.Imaging.Effects/ColorLookupTableEffect.xml
+++ b/xml/System.Drawing.Imaging.Effects/ColorLookupTableEffect.xml
@@ -30,12 +30,6 @@
         <AssemblyName>System.Drawing.Common</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="redLookupTable" Type="System.Byte[]" />
         <Parameter Name="greenLookupTable" Type="System.Byte[]" />
diff --git a/xml/System.Drawing.Imaging.Effects/ColorMatrixEffect.xml b/xml/System.Drawing.Imaging.Effects/ColorMatrixEffect.xml
index 5590827b87a..7dfc4c420d4 100644
--- a/xml/System.Drawing.Imaging.Effects/ColorMatrixEffect.xml
+++ b/xml/System.Drawing.Imaging.Effects/ColorMatrixEffect.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Adjusts the color matrix effect.</summary>
diff --git a/xml/System.Drawing.Imaging/CachedBitmap.xml b/xml/System.Drawing.Imaging/CachedBitmap.xml
index 593f976105c..b38a57f7e7c 100644
--- a/xml/System.Drawing.Imaging/CachedBitmap.xml
+++ b/xml/System.Drawing.Imaging/CachedBitmap.xml
@@ -46,12 +46,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="bitmap" Type="System.Drawing.Bitmap" />
         <Parameter Name="graphics" Type="System.Drawing.Graphics" />
diff --git a/xml/System.Drawing.Imaging/ColorMatrix.xml b/xml/System.Drawing.Imaging/ColorMatrix.xml
index 2162a8642c6..1f230cacce5 100644
--- a/xml/System.Drawing.Imaging/ColorMatrix.xml
+++ b/xml/System.Drawing.Imaging/ColorMatrix.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines a 5 x 5 matrix that contains the coordinates for the RGBAW space. Several methods of the <see cref="T:System.Drawing.Imaging.ImageAttributes" /> class adjust image colors by using a color matrix. This class cannot be inherited.</summary>
@@ -198,10 +194,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="newColorMatrix" Type="System.Single[][]" />
diff --git a/xml/System.Drawing.Imaging/ColorPalette.xml b/xml/System.Drawing.Imaging/ColorPalette.xml
index 4aa029dcc10..d0435199eb3 100644
--- a/xml/System.Drawing.Imaging/ColorPalette.xml
+++ b/xml/System.Drawing.Imaging/ColorPalette.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines an array of colors that make up a color palette. The colors are 32-bit ARGB colors. Not inheritable.</summary>
diff --git a/xml/System.Drawing.Imaging/Encoder.xml b/xml/System.Drawing.Imaging/Encoder.xml
index e307d16686b..a21cca7932b 100644
--- a/xml/System.Drawing.Imaging/Encoder.xml
+++ b/xml/System.Drawing.Imaging/Encoder.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>An <see cref="T:System.Drawing.Imaging.Encoder" /> object encapsulates a globally unique identifier (GUID) that identifies the category of an image encoder parameter.</summary>
diff --git a/xml/System.Drawing.Imaging/EncoderParameter.xml b/xml/System.Drawing.Imaging/EncoderParameter.xml
index 8bf07305f82..5c8961132af 100644
--- a/xml/System.Drawing.Imaging/EncoderParameter.xml
+++ b/xml/System.Drawing.Imaging/EncoderParameter.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Used to pass a value, or an array of values, to an image encoder.</summary>
diff --git a/xml/System.Drawing.Imaging/EncoderParameters.xml b/xml/System.Drawing.Imaging/EncoderParameters.xml
index 1ff8e29da45..9a0c759f1cb 100644
--- a/xml/System.Drawing.Imaging/EncoderParameters.xml
+++ b/xml/System.Drawing.Imaging/EncoderParameters.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates an array of <see cref="T:System.Drawing.Imaging.EncoderParameter" /> objects.</summary>
@@ -218,14 +214,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Drawing.Imaging/FrameDimension.xml b/xml/System.Drawing.Imaging/FrameDimension.xml
index 0ccc5941c75..c6a41cf0d8c 100644
--- a/xml/System.Drawing.Imaging/FrameDimension.xml
+++ b/xml/System.Drawing.Imaging/FrameDimension.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides properties that get the frame dimensions of an image. Not inheritable.</summary>
@@ -109,12 +105,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing.Imaging/ImageAttributes.xml b/xml/System.Drawing.Imaging/ImageAttributes.xml
index 733bbf32243..b5067cbc418 100644
--- a/xml/System.Drawing.Imaging/ImageAttributes.xml
+++ b/xml/System.Drawing.Imaging/ImageAttributes.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains information about how bitmap and metafile colors are manipulated during rendering.</summary>
@@ -1292,12 +1288,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2534,12 +2524,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2627,12 +2611,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing.Imaging/ImageCodecInfo.xml b/xml/System.Drawing.Imaging/ImageCodecInfo.xml
index 3d315702b02..ef4a5964ae3 100644
--- a/xml/System.Drawing.Imaging/ImageCodecInfo.xml
+++ b/xml/System.Drawing.Imaging/ImageCodecInfo.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -379,12 +375,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Imaging.ImageCodecInfo[]</ReturnType>
       </ReturnValue>
@@ -426,12 +416,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Imaging.ImageCodecInfo[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing.Imaging/ImageFormat.xml b/xml/System.Drawing.Imaging/ImageFormat.xml
index 7712e589765..b57d0ea68e7 100644
--- a/xml/System.Drawing.Imaging/ImageFormat.xml
+++ b/xml/System.Drawing.Imaging/ImageFormat.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="windowsdesktop-3.0;windowsdesktop-3.1">
       <AttributeName Language="C#">[System.ComponentModel.TypeConverter("System.Drawing.ImageFormatConverter, System.Windows.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.TypeConverter("System.Drawing.ImageFormatConverter, System.Windows.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51")&gt;]</AttributeName>
@@ -214,10 +210,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Drawing.Imaging/Metafile.xml b/xml/System.Drawing.Imaging/Metafile.xml
index 502f3d429e8..e6544279559 100644
--- a/xml/System.Drawing.Imaging/Metafile.xml
+++ b/xml/System.Drawing.Imaging/Metafile.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Editor("System.Drawing.Design.MetafileEditor, System.Drawing.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("System.Drawing.Design.MetafileEditor, System.Drawing.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))&gt;]</AttributeName>
@@ -483,12 +479,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="referenceHdc" Type="System.IntPtr" />
         <Parameter Name="emfType" Type="System.Drawing.Imaging.EmfType" />
@@ -1273,12 +1263,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="referenceHdc" Type="System.IntPtr" />
         <Parameter Name="frameRect" Type="System.Drawing.Rectangle" />
@@ -1321,12 +1305,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="referenceHdc" Type="System.IntPtr" />
         <Parameter Name="frameRect" Type="System.Drawing.RectangleF" />
diff --git a/xml/System.Drawing.Imaging/MetafileHeader.xml b/xml/System.Drawing.Imaging/MetafileHeader.xml
index bea8218925c..e41caa73d23 100644
--- a/xml/System.Drawing.Imaging/MetafileHeader.xml
+++ b/xml/System.Drawing.Imaging/MetafileHeader.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains attributes of an associated <see cref="T:System.Drawing.Imaging.Metafile" />. Not inheritable.</summary>
diff --git a/xml/System.Drawing.Imaging/PropertyItem.xml b/xml/System.Drawing.Imaging/PropertyItem.xml
index aeedc0563e1..86f0c9442d8 100644
--- a/xml/System.Drawing.Imaging/PropertyItem.xml
+++ b/xml/System.Drawing.Imaging/PropertyItem.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates a metadata property to be included in an image file. Not inheritable.</summary>
diff --git a/xml/System.Drawing.Printing/InvalidPrinterException.xml b/xml/System.Drawing.Printing/InvalidPrinterException.xml
index f4d83144e36..c06f0a40940 100644
--- a/xml/System.Drawing.Printing/InvalidPrinterException.xml
+++ b/xml/System.Drawing.Printing/InvalidPrinterException.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the exception that is thrown when you try to access a printer using printer settings that are not valid.</summary>
diff --git a/xml/System.Drawing.Printing/Margins.xml b/xml/System.Drawing.Printing/Margins.xml
index 05dd2b34a52..1bf1a43fb3f 100644
--- a/xml/System.Drawing.Printing/Margins.xml
+++ b/xml/System.Drawing.Printing/Margins.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -321,12 +317,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -468,12 +458,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -516,12 +500,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing.Printing/MarginsConverter.xml b/xml/System.Drawing.Printing/MarginsConverter.xml
index e3c7248a692..172df81fd09 100644
--- a/xml/System.Drawing.Printing/MarginsConverter.xml
+++ b/xml/System.Drawing.Printing/MarginsConverter.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a <see cref="T:System.Drawing.Printing.MarginsConverter" /> for <see cref="T:System.Drawing.Printing.Margins" />.</summary>
@@ -136,12 +132,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -399,12 +389,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing.Printing/PageSettings.xml b/xml/System.Drawing.Printing/PageSettings.xml
index 52dc26fa383..477ddcea49f 100644
--- a/xml/System.Drawing.Printing/PageSettings.xml
+++ b/xml/System.Drawing.Printing/PageSettings.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.Drawing.Printing/PaperSize.xml b/xml/System.Drawing.Printing/PaperSize.xml
index 5ac5ed8f055..653877da174 100644
--- a/xml/System.Drawing.Printing/PaperSize.xml
+++ b/xml/System.Drawing.Printing/PaperSize.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Drawing.Printing/PaperSource.xml b/xml/System.Drawing.Printing/PaperSource.xml
index f9d2c6db081..227a8a15db7 100644
--- a/xml/System.Drawing.Printing/PaperSource.xml
+++ b/xml/System.Drawing.Printing/PaperSource.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Drawing.Printing/PreviewPageInfo.xml b/xml/System.Drawing.Printing/PreviewPageInfo.xml
index 8ac95790dac..f13836211a3 100644
--- a/xml/System.Drawing.Printing/PreviewPageInfo.xml
+++ b/xml/System.Drawing.Printing/PreviewPageInfo.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies print preview information for a single page. This class cannot be inherited.</summary>
diff --git a/xml/System.Drawing.Printing/PreviewPrintController.xml b/xml/System.Drawing.Printing/PreviewPrintController.xml
index a90942298ef..25f8e625432 100644
--- a/xml/System.Drawing.Printing/PreviewPrintController.xml
+++ b/xml/System.Drawing.Printing/PreviewPrintController.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies a print controller that displays a document on a screen as a series of images.</summary>
diff --git a/xml/System.Drawing.Printing/PrintController.xml b/xml/System.Drawing.Printing/PrintController.xml
index d3ca2e57b1c..47c7f009853 100644
--- a/xml/System.Drawing.Printing/PrintController.xml
+++ b/xml/System.Drawing.Printing/PrintController.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Controls how a document is printed, when printing from a Windows Forms application.</summary>
diff --git a/xml/System.Drawing.Printing/PrintDocument.xml b/xml/System.Drawing.Printing/PrintDocument.xml
index a3447d48f66..9199ffd7892 100644
--- a/xml/System.Drawing.Printing/PrintDocument.xml
+++ b/xml/System.Drawing.Printing/PrintDocument.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.ComponentModel.ToolboxItemFilter("System.Drawing.Printing")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.ToolboxItemFilter("System.Drawing.Printing")&gt;]</AttributeName>
diff --git a/xml/System.Drawing.Printing/PrintPageEventArgs.xml b/xml/System.Drawing.Printing/PrintPageEventArgs.xml
index 7ef5814798e..31eec0a7c77 100644
--- a/xml/System.Drawing.Printing/PrintPageEventArgs.xml
+++ b/xml/System.Drawing.Printing/PrintPageEventArgs.xml
@@ -35,14 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Drawing.Printing.PrintDocument.PrintPage" /> event.</summary>
@@ -99,10 +91,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -210,10 +198,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Graphics</ReturnType>
@@ -416,10 +400,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Drawing.Printing/PrinterResolution.xml b/xml/System.Drawing.Printing/PrinterResolution.xml
index 66548ee04d1..3c1c05eb726 100644
--- a/xml/System.Drawing.Printing/PrinterResolution.xml
+++ b/xml/System.Drawing.Printing/PrinterResolution.xml
@@ -174,12 +174,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing.Printing/PrinterSettings.xml b/xml/System.Drawing.Printing/PrinterSettings.xml
index 1fc738f4584..10ea945c2d4 100644
--- a/xml/System.Drawing.Printing/PrinterSettings.xml
+++ b/xml/System.Drawing.Printing/PrinterSettings.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.Drawing.Printing/PrinterUnitConvert.xml b/xml/System.Drawing.Printing/PrinterUnitConvert.xml
index a029242e956..5547499cfe1 100644
--- a/xml/System.Drawing.Printing/PrinterUnitConvert.xml
+++ b/xml/System.Drawing.Printing/PrinterUnitConvert.xml
@@ -191,12 +191,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Printing.Margins</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing.Printing/QueryPageSettingsEventArgs.xml b/xml/System.Drawing.Printing/QueryPageSettingsEventArgs.xml
index 96d321dc538..6eeb5a27606 100644
--- a/xml/System.Drawing.Printing/QueryPageSettingsEventArgs.xml
+++ b/xml/System.Drawing.Printing/QueryPageSettingsEventArgs.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Drawing.Printing.PrintDocument.QueryPageSettings" /> event.</summary>
diff --git a/xml/System.Drawing.Printing/StandardPrintController.xml b/xml/System.Drawing.Printing/StandardPrintController.xml
index f06f32f4273..ab4fb73d6cd 100644
--- a/xml/System.Drawing.Printing/StandardPrintController.xml
+++ b/xml/System.Drawing.Printing/StandardPrintController.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies a print controller that sends information to a printer.</summary>
diff --git a/xml/System.Drawing.Text/FontCollection.xml b/xml/System.Drawing.Text/FontCollection.xml
index 8f1fc44700d..6097da05056 100644
--- a/xml/System.Drawing.Text/FontCollection.xml
+++ b/xml/System.Drawing.Text/FontCollection.xml
@@ -186,10 +186,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.FontFamily[]</ReturnType>
diff --git a/xml/System.Drawing.Text/PrivateFontCollection.xml b/xml/System.Drawing.Text/PrivateFontCollection.xml
index b5b7023bbb9..144db67a0dd 100644
--- a/xml/System.Drawing.Text/PrivateFontCollection.xml
+++ b/xml/System.Drawing.Text/PrivateFontCollection.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.Drawing/Bitmap.xml b/xml/System.Drawing/Bitmap.xml
index 9453a9f8e67..b4f598c297e 100644
--- a/xml/System.Drawing/Bitmap.xml
+++ b/xml/System.Drawing/Bitmap.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Editor("System.Drawing.Design.BitmapEditor, System.Drawing.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("System.Drawing.Design.BitmapEditor, System.Drawing.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))&gt;]</AttributeName>
@@ -869,12 +865,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing/Brush.xml b/xml/System.Drawing/Brush.xml
index 03fcc585af6..5bc2849b201 100644
--- a/xml/System.Drawing/Brush.xml
+++ b/xml/System.Drawing/Brush.xml
@@ -115,12 +115,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing/Brushes.xml b/xml/System.Drawing/Brushes.xml
index db2b7a36d99..a626f05ffac 100644
--- a/xml/System.Drawing/Brushes.xml
+++ b/xml/System.Drawing/Brushes.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Brushes for all the standard colors. This class cannot be inherited.</summary>
diff --git a/xml/System.Drawing/BufferedGraphics.xml b/xml/System.Drawing/BufferedGraphics.xml
index dc183fcd5ea..29999604c50 100644
--- a/xml/System.Drawing/BufferedGraphics.xml
+++ b/xml/System.Drawing/BufferedGraphics.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a graphics buffer for double buffering.</summary>
@@ -289,12 +285,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing/BufferedGraphicsContext.xml b/xml/System.Drawing/BufferedGraphicsContext.xml
index b59f0917cf9..ec28ee3c23f 100644
--- a/xml/System.Drawing/BufferedGraphicsContext.xml
+++ b/xml/System.Drawing/BufferedGraphicsContext.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods for creating graphics buffers that can be used for double buffering.</summary>
diff --git a/xml/System.Drawing/BufferedGraphicsManager.xml b/xml/System.Drawing/BufferedGraphicsManager.xml
index 2d705f3ce2d..30b930212db 100644
--- a/xml/System.Drawing/BufferedGraphicsManager.xml
+++ b/xml/System.Drawing/BufferedGraphicsManager.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides access to the main buffered graphics context object for the application domain.</summary>
diff --git a/xml/System.Drawing/CharacterRange.xml b/xml/System.Drawing/CharacterRange.xml
index 1a5fbd191aa..e251d784421 100644
--- a/xml/System.Drawing/CharacterRange.xml
+++ b/xml/System.Drawing/CharacterRange.xml
@@ -177,10 +177,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
diff --git a/xml/System.Drawing/Color.xml b/xml/System.Drawing/Color.xml
index b5b16e65cf2..562311742a0 100644
--- a/xml/System.Drawing/Color.xml
+++ b/xml/System.Drawing/Color.xml
@@ -74,10 +74,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Editor("System.Drawing.Design.ColorEditor, System.Drawing.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("System.Drawing.Design.ColorEditor, System.Drawing.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))&gt;]</AttributeName>
@@ -2149,12 +2145,6 @@ This example is designed to be used with a Windows Form. Paste the code into the
       <AssemblyInfo>
         <AssemblyName>System.Drawing.Common</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing/ColorConverter.xml b/xml/System.Drawing/ColorConverter.xml
index bf19d9c183c..4c2349697cf 100644
--- a/xml/System.Drawing/ColorConverter.xml
+++ b/xml/System.Drawing/ColorConverter.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Converts colors from one data type to another. Access this class through the <see cref="T:System.ComponentModel.TypeDescriptor" />.</summary>
@@ -138,12 +134,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -378,12 +368,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.TypeConverter+StandardValuesCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing/ColorTranslator.xml b/xml/System.Drawing/ColorTranslator.xml
index 98b5a569fb9..4f2139ca7b9 100644
--- a/xml/System.Drawing/ColorTranslator.xml
+++ b/xml/System.Drawing/ColorTranslator.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Translates colors to and from GDI+ <see cref="T:System.Drawing.Color" /> structures. This class cannot be inherited.</summary>
diff --git a/xml/System.Drawing/Font.xml b/xml/System.Drawing/Font.xml
index 075dd866ef8..24093518182 100644
--- a/xml/System.Drawing/Font.xml
+++ b/xml/System.Drawing/Font.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Editor("System.Drawing.Design.FontEditor, System.Drawing.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("System.Drawing.Design.FontEditor, System.Drawing.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))&gt;]</AttributeName>
@@ -949,12 +945,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1950,10 +1940,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Drawing/FontConverter+FontNameConverter.xml b/xml/System.Drawing/FontConverter+FontNameConverter.xml
index 09a291b804b..feabfdffc71 100644
--- a/xml/System.Drawing/FontConverter+FontNameConverter.xml
+++ b/xml/System.Drawing/FontConverter+FontNameConverter.xml
@@ -174,12 +174,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -284,12 +278,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -340,12 +328,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing/FontConverter+FontUnitConverter.xml b/xml/System.Drawing/FontConverter+FontUnitConverter.xml
index de0d546865d..0a25988dae9 100644
--- a/xml/System.Drawing/FontConverter+FontUnitConverter.xml
+++ b/xml/System.Drawing/FontConverter+FontUnitConverter.xml
@@ -37,12 +37,6 @@
     <BaseTypeName>System.ComponentModel.EnumConverter</BaseTypeName>
   </Base>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Converts font units to and from other unit types.</summary>
     <remarks>To be added.</remarks>
@@ -110,12 +104,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.TypeConverter+StandardValuesCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing/FontConverter.xml b/xml/System.Drawing/FontConverter.xml
index e3430fa8be3..3b867dc6ce8 100644
--- a/xml/System.Drawing/FontConverter.xml
+++ b/xml/System.Drawing/FontConverter.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Converts <see cref="T:System.Drawing.Font" /> objects from one data type to another.</summary>
@@ -193,12 +189,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -256,12 +246,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -316,12 +300,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -465,12 +443,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -519,10 +491,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
@@ -585,12 +553,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing/FontFamily.xml b/xml/System.Drawing/FontFamily.xml
index d3f098613c4..552aae4ccc7 100644
--- a/xml/System.Drawing/FontFamily.xml
+++ b/xml/System.Drawing/FontFamily.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines a group of type faces having a similar basic design and certain variations in styles. This class cannot be inherited.</summary>
@@ -283,12 +279,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing/Graphics+DrawImageAbort.xml b/xml/System.Drawing/Graphics+DrawImageAbort.xml
index d48deb48a1b..7b798d32c49 100644
--- a/xml/System.Drawing/Graphics+DrawImageAbort.xml
+++ b/xml/System.Drawing/Graphics+DrawImageAbort.xml
@@ -30,10 +30,6 @@
     <BaseTypeName>System.Delegate</BaseTypeName>
   </Base>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.Drawing/Graphics+EnumerateMetafileProc.xml b/xml/System.Drawing/Graphics+EnumerateMetafileProc.xml
index d3bd70628ef..a2227c7fbf6 100644
--- a/xml/System.Drawing/Graphics+EnumerateMetafileProc.xml
+++ b/xml/System.Drawing/Graphics+EnumerateMetafileProc.xml
@@ -31,10 +31,6 @@
     <BaseTypeName>System.Delegate</BaseTypeName>
   </Base>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.Drawing/Graphics.xml b/xml/System.Drawing/Graphics.xml
index 4aa1464eb69..0163aeb32be 100644
--- a/xml/System.Drawing/Graphics.xml
+++ b/xml/System.Drawing/Graphics.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -1790,12 +1786,6 @@ The number of points in the array should be a multiple of 3 plus 1 because the f
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1844,12 +1834,6 @@ The number of points in the array should be a multiple of 3 plus 1 because the f
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2121,12 +2105,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2175,12 +2153,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2392,12 +2364,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2439,12 +2405,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2667,12 +2627,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2721,12 +2675,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
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         <AssemblyName>System.Drawing</AssemblyName>
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       <ReturnValue>
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@@ -2935,12 +2883,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
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       <ReturnValue>
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@@ -2980,12 +2922,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
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       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
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@@ -3117,12 +3053,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
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@@ -3343,12 +3273,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
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@@ -3392,12 +3316,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
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@@ -6199,12 +6117,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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       <ReturnValue>
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@@ -6312,12 +6224,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
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@@ -6425,12 +6331,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
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       <ReturnValue>
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@@ -6540,12 +6440,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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       <ReturnValue>
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@@ -7399,12 +7293,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
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       <ReturnValue>
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@@ -7453,12 +7341,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
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@@ -8042,12 +7924,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
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       <ReturnValue>
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@@ -8096,12 +7972,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
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       <ReturnValue>
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@@ -8547,12 +8417,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
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         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
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@@ -8601,12 +8465,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
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       <ReturnValue>
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@@ -12435,12 +12293,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
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       <ReturnValue>
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@@ -12489,12 +12341,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
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       <ReturnValue>
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@@ -12711,12 +12557,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
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       <ReturnValue>
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@@ -12756,12 +12596,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
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       <ReturnValue>
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@@ -12959,12 +12793,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
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       <ReturnValue>
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@@ -13006,12 +12834,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
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       <ReturnValue>
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@@ -13835,12 +13657,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
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       <ReturnValue>
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@@ -13889,12 +13705,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
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       <ReturnValue>
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@@ -14086,12 +13896,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
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       <ReturnValue>
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@@ -14131,12 +13935,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
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@@ -14609,12 +14407,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
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-      <Attributes>
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@@ -14663,12 +14455,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
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@@ -15483,10 +15269,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
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           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
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@@ -16689,12 +16471,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
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-      <Attributes>
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@@ -16815,12 +16591,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
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       <ReturnValue>
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@@ -16862,12 +16632,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
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-      <Attributes>
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@@ -17082,12 +16846,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
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@@ -17138,12 +16896,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
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-      <Attributes>
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       <ReturnValue>
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@@ -17194,12 +16946,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
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-      <Attributes>
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@@ -17259,12 +17005,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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@@ -17357,12 +17097,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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@@ -17453,12 +17187,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
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@@ -17541,12 +17269,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
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         <ReturnType>System.Drawing.SizeF</ReturnType>
       </ReturnValue>
@@ -17610,12 +17332,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.SizeF</ReturnType>
       </ReturnValue>
@@ -17704,12 +17420,6 @@ The <see cref="T:System.Drawing.Graphics" /> object has a transform applied othe
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.SizeF</ReturnType>
       </ReturnValue>
@@ -19729,12 +19439,6 @@ This is a more performant alternative to <xref:System.Drawing.Graphics.Transform
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -19778,12 +19482,6 @@ This is a more performant alternative to <xref:System.Drawing.Graphics.Transform
       <AssemblyInfo>
         <AssemblyName>System.Drawing</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing/Icon.xml b/xml/System.Drawing/Icon.xml
index dc688c12bc8..a6330e27f37 100644
--- a/xml/System.Drawing/Icon.xml
+++ b/xml/System.Drawing/Icon.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Editor("System.Drawing.Design.IconEditor, System.Drawing.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("System.Drawing.Design.IconEditor, System.Drawing.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))&gt;]</AttributeName>
diff --git a/xml/System.Drawing/IconConverter.xml b/xml/System.Drawing/IconConverter.xml
index 0fc7bc453fd..9266cfe71ff 100644
--- a/xml/System.Drawing/IconConverter.xml
+++ b/xml/System.Drawing/IconConverter.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Converts an <see cref="T:System.Drawing.Icon" /> object from one data type to another. Access this class through the <see cref="T:System.ComponentModel.TypeDescriptor" /> object.</summary>
@@ -126,12 +122,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing/Image+GetThumbnailImageAbort.xml b/xml/System.Drawing/Image+GetThumbnailImageAbort.xml
index ab83ef3f772..0af7c66c534 100644
--- a/xml/System.Drawing/Image+GetThumbnailImageAbort.xml
+++ b/xml/System.Drawing/Image+GetThumbnailImageAbort.xml
@@ -29,12 +29,6 @@
   <Base>
     <BaseTypeName>System.Delegate</BaseTypeName>
   </Base>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Parameters />
   <ReturnValue>
     <ReturnType>System.Boolean</ReturnType>
diff --git a/xml/System.Drawing/Image.xml b/xml/System.Drawing/Image.xml
index b232edcdc49..27aa7177f39 100644
--- a/xml/System.Drawing/Image.xml
+++ b/xml/System.Drawing/Image.xml
@@ -68,10 +68,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Editor("System.Drawing.Design.ImageEditor, System.Drawing.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Editor("System.Drawing.Design.ImageEditor, System.Drawing.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(System.Drawing.Design.UITypeEditor))&gt;]</AttributeName>
@@ -964,12 +960,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Imaging.EncoderParameters</ReturnType>
       </ReturnValue>
@@ -1093,12 +1083,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Imaging.PropertyItem</ReturnType>
       </ReturnValue>
@@ -2155,12 +2139,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2448,14 +2426,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.ComponentModel.Bindable(true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.Bindable(true)&gt;]</AttributeName>
diff --git a/xml/System.Drawing/ImageAnimator.xml b/xml/System.Drawing/ImageAnimator.xml
index 3aefea4231b..6261c01b468 100644
--- a/xml/System.Drawing/ImageAnimator.xml
+++ b/xml/System.Drawing/ImageAnimator.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Animates an image that has time-based frames.</summary>
@@ -123,12 +119,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -245,12 +235,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing/ImageConverter.xml b/xml/System.Drawing/ImageConverter.xml
index 0d3bb91bce1..35e80dc1d25 100644
--- a/xml/System.Drawing/ImageConverter.xml
+++ b/xml/System.Drawing/ImageConverter.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/System.Drawing/ImageFormatConverter.xml b/xml/System.Drawing/ImageFormatConverter.xml
index 41720259bd4..d2d91554ef9 100644
--- a/xml/System.Drawing/ImageFormatConverter.xml
+++ b/xml/System.Drawing/ImageFormatConverter.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -140,12 +136,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -388,12 +378,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.TypeConverter+StandardValuesCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing/Pen.xml b/xml/System.Drawing/Pen.xml
index 6b2b1e1b00f..cd8f0ae0371 100644
--- a/xml/System.Drawing/Pen.xml
+++ b/xml/System.Drawing/Pen.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines an object used to draw lines and curves. This class cannot be inherited.</summary>
diff --git a/xml/System.Drawing/Pens.xml b/xml/System.Drawing/Pens.xml
index fce7a91a9c9..e74e75ade6c 100644
--- a/xml/System.Drawing/Pens.xml
+++ b/xml/System.Drawing/Pens.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Pens for all the standard colors. This class cannot be inherited.</summary>
diff --git a/xml/System.Drawing/Point.xml b/xml/System.Drawing/Point.xml
index 04d3ac77836..0039bb58dea 100644
--- a/xml/System.Drawing/Point.xml
+++ b/xml/System.Drawing/Point.xml
@@ -524,10 +524,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -1300,10 +1296,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Drawing/PointConverter.xml b/xml/System.Drawing/PointConverter.xml
index 8b639239168..c59daaead17 100644
--- a/xml/System.Drawing/PointConverter.xml
+++ b/xml/System.Drawing/PointConverter.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Converts a <see cref="T:System.Drawing.Point" /> object from one data type to another.</summary>
@@ -138,12 +134,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -376,12 +366,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing/PointF.xml b/xml/System.Drawing/PointF.xml
index f377a6792b4..d7c7b1f0460 100644
--- a/xml/System.Drawing/PointF.xml
+++ b/xml/System.Drawing/PointF.xml
@@ -421,10 +421,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -1189,10 +1185,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Drawing/Rectangle.xml b/xml/System.Drawing/Rectangle.xml
index af77325e265..2fb14b5ccc2 100644
--- a/xml/System.Drawing/Rectangle.xml
+++ b/xml/System.Drawing/Rectangle.xml
@@ -683,10 +683,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -1993,10 +1989,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Drawing/RectangleConverter.xml b/xml/System.Drawing/RectangleConverter.xml
index a55465f7c74..8682d9fbf35 100644
--- a/xml/System.Drawing/RectangleConverter.xml
+++ b/xml/System.Drawing/RectangleConverter.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Converts rectangles from one data type to another. Access this class through the <see cref="T:System.ComponentModel.TypeDescriptor" />.</summary>
@@ -122,12 +118,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -358,12 +348,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing/RectangleF.xml b/xml/System.Drawing/RectangleF.xml
index 4b92a920b79..aa20d0cdecd 100644
--- a/xml/System.Drawing/RectangleF.xml
+++ b/xml/System.Drawing/RectangleF.xml
@@ -616,10 +616,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -1900,10 +1896,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Drawing/Region.xml b/xml/System.Drawing/Region.xml
index af35419a3f9..e0d38d15acf 100644
--- a/xml/System.Drawing/Region.xml
+++ b/xml/System.Drawing/Region.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -1091,12 +1087,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Drawing2D.RegionData</ReturnType>
       </ReturnValue>
@@ -1706,12 +1696,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1765,12 +1749,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1824,12 +1802,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1883,12 +1855,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1989,12 +1955,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2050,12 +2010,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2213,12 +2167,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2278,12 +2226,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing/Size.xml b/xml/System.Drawing/Size.xml
index 47474808492..942159fff32 100644
--- a/xml/System.Drawing/Size.xml
+++ b/xml/System.Drawing/Size.xml
@@ -440,10 +440,6 @@ The <xref:System.Drawing.Size> structure is used to specify a height and width t
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -1400,10 +1396,6 @@ The <xref:System.Drawing.Size> structure is used to specify a height and width t
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Drawing/SizeConverter.xml b/xml/System.Drawing/SizeConverter.xml
index e334998e566..4e74c0d9dd1 100644
--- a/xml/System.Drawing/SizeConverter.xml
+++ b/xml/System.Drawing/SizeConverter.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Drawing.SizeConverter" /> class is used to convert from one data type to another. Access this class through the <see cref="T:System.ComponentModel.TypeDescriptor" /> object.</summary>
@@ -122,12 +118,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -358,12 +348,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -465,10 +449,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
diff --git a/xml/System.Drawing/SizeF.xml b/xml/System.Drawing/SizeF.xml
index daee598af51..b6b68564db3 100644
--- a/xml/System.Drawing/SizeF.xml
+++ b/xml/System.Drawing/SizeF.xml
@@ -480,10 +480,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -1341,10 +1337,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Drawing/SizeFConverter.xml b/xml/System.Drawing/SizeFConverter.xml
index b645761fcf9..4d27f6871d7 100644
--- a/xml/System.Drawing/SizeFConverter.xml
+++ b/xml/System.Drawing/SizeFConverter.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Converts <see cref="T:System.Drawing.SizeF" /> objects from one type to another.</summary>
@@ -126,12 +122,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -353,12 +343,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -457,10 +441,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
diff --git a/xml/System.Drawing/SolidBrush.xml b/xml/System.Drawing/SolidBrush.xml
index 3a8fe88ebd6..4ea12a92038 100644
--- a/xml/System.Drawing/SolidBrush.xml
+++ b/xml/System.Drawing/SolidBrush.xml
@@ -125,12 +125,6 @@ The following code example adds a shadow to a <xref:System.Windows.Forms.ListBox
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing/StringFormat.xml b/xml/System.Drawing/StringFormat.xml
index 0387683967f..bf0a868b4e5 100644
--- a/xml/System.Drawing/StringFormat.xml
+++ b/xml/System.Drawing/StringFormat.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates text layout information (such as alignment, orientation and tab stops) display manipulations (such as ellipsis insertion and national digit substitution) and OpenType features. This class cannot be inherited.</summary>
diff --git a/xml/System.Drawing/SystemBrushes.xml b/xml/System.Drawing/SystemBrushes.xml
index bf6320a160e..c3a3e996144 100644
--- a/xml/System.Drawing/SystemBrushes.xml
+++ b/xml/System.Drawing/SystemBrushes.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Each property of the <see cref="T:System.Drawing.SystemBrushes" /> class is a <see cref="T:System.Drawing.SolidBrush" /> that is the color of a Windows display element.</summary>
diff --git a/xml/System.Drawing/SystemFonts.xml b/xml/System.Drawing/SystemFonts.xml
index 07c060e9ac1..5d3c473696f 100644
--- a/xml/System.Drawing/SystemFonts.xml
+++ b/xml/System.Drawing/SystemFonts.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the fonts used to display text in Windows display elements.</summary>
@@ -118,10 +114,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -179,10 +171,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -225,12 +213,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Drawing/SystemIcons.xml b/xml/System.Drawing/SystemIcons.xml
index 40441302e74..765ac780865 100644
--- a/xml/System.Drawing/SystemIcons.xml
+++ b/xml/System.Drawing/SystemIcons.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Each property of the <see cref="T:System.Drawing.SystemIcons" /> class is an <see cref="T:System.Drawing.Icon" /> object for Windows system-wide icons. This class cannot be inherited.</summary>
diff --git a/xml/System.Drawing/SystemPens.xml b/xml/System.Drawing/SystemPens.xml
index 8a9afb68191..78cef5ec4d5 100644
--- a/xml/System.Drawing/SystemPens.xml
+++ b/xml/System.Drawing/SystemPens.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Each property of the <see cref="T:System.Drawing.SystemPens" /> class is a <see cref="T:System.Drawing.Pen" /> that is the color of a Windows display element and that has a width of 1 pixel.</summary>
diff --git a/xml/System.Drawing/TextureBrush.xml b/xml/System.Drawing/TextureBrush.xml
index 5b6a68c9e43..c0c377bc1db 100644
--- a/xml/System.Drawing/TextureBrush.xml
+++ b/xml/System.Drawing/TextureBrush.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Each property of the <see cref="T:System.Drawing.TextureBrush" /> class is a <see cref="T:System.Drawing.Brush" /> object that uses an image to fill the interior of a shape. This class cannot be inherited.</summary>
diff --git a/xml/System.Drawing/ToolboxBitmapAttribute.xml b/xml/System.Drawing/ToolboxBitmapAttribute.xml
index 86c8148ef37..57d6b3baba4 100644
--- a/xml/System.Drawing/ToolboxBitmapAttribute.xml
+++ b/xml/System.Drawing/ToolboxBitmapAttribute.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Allows you to specify an icon to represent a control in a container, such as the Microsoft Visual Studio Form Designer.</summary>
@@ -101,12 +97,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="imageFile" Type="System.String" />
       </Parameters>
@@ -151,12 +141,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="t" Type="System.Type" />
       </Parameters>
@@ -206,12 +190,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="t" Type="System.Type" />
         <Parameter Name="name" Type="System.String" />
@@ -451,10 +429,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -555,10 +529,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Dynamic/BinaryOperationBinder.xml b/xml/System.Dynamic/BinaryOperationBinder.xml
index 36803ff8e9b..7c7034b99d1 100644
--- a/xml/System.Dynamic/BinaryOperationBinder.xml
+++ b/xml/System.Dynamic/BinaryOperationBinder.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-9.0">
       <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")&gt;]</AttributeName>
diff --git a/xml/System.Dynamic/BindingRestrictions.xml b/xml/System.Dynamic/BindingRestrictions.xml
index bf8fa4a3b93..f8be85ebf6c 100644
--- a/xml/System.Dynamic/BindingRestrictions.xml
+++ b/xml/System.Dynamic/BindingRestrictions.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("{DebugView}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("{DebugView}")&gt;]</AttributeName>
diff --git a/xml/System.Dynamic/CallInfo.xml b/xml/System.Dynamic/CallInfo.xml
index e2c50a50812..f08cc006239 100644
--- a/xml/System.Dynamic/CallInfo.xml
+++ b/xml/System.Dynamic/CallInfo.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Describes arguments in the dynamic binding process.</summary>
@@ -315,12 +311,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Dynamic/ConvertBinder.xml b/xml/System.Dynamic/ConvertBinder.xml
index 36725b08b52..ab123c89914 100644
--- a/xml/System.Dynamic/ConvertBinder.xml
+++ b/xml/System.Dynamic/ConvertBinder.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-9.0">
       <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")&gt;]</AttributeName>
diff --git a/xml/System.Dynamic/CreateInstanceBinder.xml b/xml/System.Dynamic/CreateInstanceBinder.xml
index 793758eda0d..3bf39720edf 100644
--- a/xml/System.Dynamic/CreateInstanceBinder.xml
+++ b/xml/System.Dynamic/CreateInstanceBinder.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-9.0">
       <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")&gt;]</AttributeName>
diff --git a/xml/System.Dynamic/DeleteIndexBinder.xml b/xml/System.Dynamic/DeleteIndexBinder.xml
index 9e0498c76b6..c5fe4d954c5 100644
--- a/xml/System.Dynamic/DeleteIndexBinder.xml
+++ b/xml/System.Dynamic/DeleteIndexBinder.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-9.0">
       <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")&gt;]</AttributeName>
diff --git a/xml/System.Dynamic/DeleteMemberBinder.xml b/xml/System.Dynamic/DeleteMemberBinder.xml
index 0c0585c00b8..9f6ee6b8943 100644
--- a/xml/System.Dynamic/DeleteMemberBinder.xml
+++ b/xml/System.Dynamic/DeleteMemberBinder.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-9.0">
       <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")&gt;]</AttributeName>
diff --git a/xml/System.Dynamic/DynamicMetaObject.xml b/xml/System.Dynamic/DynamicMetaObject.xml
index 333d6febbef..ab33c03c84f 100644
--- a/xml/System.Dynamic/DynamicMetaObject.xml
+++ b/xml/System.Dynamic/DynamicMetaObject.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the dynamic binding and a binding logic of an object participating in the dynamic binding.</summary>
@@ -1114,10 +1110,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -1167,10 +1159,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Dynamic/DynamicMetaObjectBinder.xml b/xml/System.Dynamic/DynamicMetaObjectBinder.xml
index 9c8c6832cf6..d82bb366980 100644
--- a/xml/System.Dynamic/DynamicMetaObjectBinder.xml
+++ b/xml/System.Dynamic/DynamicMetaObjectBinder.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-9.0">
       <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")&gt;]</AttributeName>
diff --git a/xml/System.Dynamic/DynamicObject.xml b/xml/System.Dynamic/DynamicObject.xml
index d9642204d8f..20dbce15f05 100644
--- a/xml/System.Dynamic/DynamicObject.xml
+++ b/xml/System.Dynamic/DynamicObject.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-9.0">
       <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")&gt;]</AttributeName>
@@ -550,12 +546,6 @@ Dim testExplicit2 = CTypeDynamic(sampleObject, GetType(String))
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -901,12 +891,6 @@ Dim testExplicit2 = CTypeDynamic(sampleObject, GetType(String))
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -986,12 +970,6 @@ Dim testExplicit2 = CTypeDynamic(sampleObject, GetType(String))
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Dynamic/GetIndexBinder.xml b/xml/System.Dynamic/GetIndexBinder.xml
index 9d468fefe22..1597594f719 100644
--- a/xml/System.Dynamic/GetIndexBinder.xml
+++ b/xml/System.Dynamic/GetIndexBinder.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-9.0">
       <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")&gt;]</AttributeName>
diff --git a/xml/System.Dynamic/GetMemberBinder.xml b/xml/System.Dynamic/GetMemberBinder.xml
index f470399bcc0..0789e3143bf 100644
--- a/xml/System.Dynamic/GetMemberBinder.xml
+++ b/xml/System.Dynamic/GetMemberBinder.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-9.0">
       <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")&gt;]</AttributeName>
diff --git a/xml/System.Dynamic/IDynamicMetaObjectProvider.xml b/xml/System.Dynamic/IDynamicMetaObjectProvider.xml
index 928b36be7f5..555ab96fda0 100644
--- a/xml/System.Dynamic/IDynamicMetaObjectProvider.xml
+++ b/xml/System.Dynamic/IDynamicMetaObjectProvider.xml
@@ -48,12 +48,6 @@
     <TypeForwarding From="System.Dynamic.Runtime" FromVersion="4.1.2.0" To="System.Linq.Expressions" ToVersion="4.2.2.0" FrameworkAlternate="netcore-3.1" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents a dynamic object, that can have its operations bound at runtime.</summary>
     <remarks>
diff --git a/xml/System.Dynamic/InvokeBinder.xml b/xml/System.Dynamic/InvokeBinder.xml
index 497e7389645..af174f3404f 100644
--- a/xml/System.Dynamic/InvokeBinder.xml
+++ b/xml/System.Dynamic/InvokeBinder.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-9.0">
       <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")&gt;]</AttributeName>
diff --git a/xml/System.Dynamic/InvokeMemberBinder.xml b/xml/System.Dynamic/InvokeMemberBinder.xml
index 8e56240840f..3c191e07a4c 100644
--- a/xml/System.Dynamic/InvokeMemberBinder.xml
+++ b/xml/System.Dynamic/InvokeMemberBinder.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-9.0">
       <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")&gt;]</AttributeName>
diff --git a/xml/System.Dynamic/SetIndexBinder.xml b/xml/System.Dynamic/SetIndexBinder.xml
index 0316b922dca..0655734b42e 100644
--- a/xml/System.Dynamic/SetIndexBinder.xml
+++ b/xml/System.Dynamic/SetIndexBinder.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-9.0">
       <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")&gt;]</AttributeName>
diff --git a/xml/System.Dynamic/SetMemberBinder.xml b/xml/System.Dynamic/SetMemberBinder.xml
index 9656b3cbda7..17a794e01df 100644
--- a/xml/System.Dynamic/SetMemberBinder.xml
+++ b/xml/System.Dynamic/SetMemberBinder.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-9.0">
       <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")&gt;]</AttributeName>
diff --git a/xml/System.Dynamic/UnaryOperationBinder.xml b/xml/System.Dynamic/UnaryOperationBinder.xml
index dfdb6aa68e4..fef33218175 100644
--- a/xml/System.Dynamic/UnaryOperationBinder.xml
+++ b/xml/System.Dynamic/UnaryOperationBinder.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-9.0">
       <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Creating a call site may require dynamic code generation.")&gt;]</AttributeName>
diff --git a/xml/System.Formats.Asn1/Asn1Tag.xml b/xml/System.Formats.Asn1/Asn1Tag.xml
index e2e4fa5c0fa..7bdcc487b73 100644
--- a/xml/System.Formats.Asn1/Asn1Tag.xml
+++ b/xml/System.Formats.Asn1/Asn1Tag.xml
@@ -362,12 +362,6 @@ This constructor allows for the creation undefined UNIVERSAL class tags.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -768,12 +762,6 @@ If <xref:System.Formats.Asn1.Asn1Tag.TagClass> is <xref:System.Formats.Asn1.TagC
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Formats.Asn1/AsnContentException.xml b/xml/System.Formats.Asn1/AsnContentException.xml
index 1e19e09683d..0bd2f86bff2 100644
--- a/xml/System.Formats.Asn1/AsnContentException.xml
+++ b/xml/System.Formats.Asn1/AsnContentException.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The exception that is thrown when an encoded ASN.1 value cannot be successfully decoded.</summary>
@@ -102,10 +98,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Formats.Asn1/AsnDecoder.xml b/xml/System.Formats.Asn1/AsnDecoder.xml
index 6a263b0e11f..d04d7a494b2 100644
--- a/xml/System.Formats.Asn1/AsnDecoder.xml
+++ b/xml/System.Formats.Asn1/AsnDecoder.xml
@@ -327,12 +327,6 @@ The contents are not valid under the current encoding rules.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Enum</ReturnType>
       </ReturnValue>
@@ -675,12 +669,6 @@ The contents are not valid under the current encoding rules.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Enum</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Formats.Asn1/AsnReader.xml b/xml/System.Formats.Asn1/AsnReader.xml
index 9085f49a815..924370e49f2 100644
--- a/xml/System.Formats.Asn1/AsnReader.xml
+++ b/xml/System.Formats.Asn1/AsnReader.xml
@@ -72,12 +72,6 @@ This constructor does not copy `data`. The caller is responsible for ensuring th
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Formats.Asn1.AsnReader</ReturnType>
       </ReturnValue>
@@ -200,12 +194,6 @@ This constructor does not copy `data`. The caller is responsible for ensuring th
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -282,12 +270,6 @@ The contents are not valid under the current encoding rules.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -394,12 +376,6 @@ The contents are not valid under the current encoding rules.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Enum</ReturnType>
       </ReturnValue>
@@ -461,12 +437,6 @@ The encoded value is too big to fit in a <paramref name="enumType" /> value.</ex
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TEnum</ReturnType>
       </ReturnValue>
@@ -649,12 +619,6 @@ The contents are not valid under the current encoding rules.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.BitArray</ReturnType>
       </ReturnValue>
@@ -692,12 +656,6 @@ The contents are not valid under the current encoding rules.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Enum</ReturnType>
       </ReturnValue>
@@ -751,12 +709,6 @@ The encoded value is too big to fit in a <paramref name="flagsEnumType" /> value
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TFlagsEnum</ReturnType>
       </ReturnValue>
@@ -895,12 +847,6 @@ The contents are not valid under the current encoding rules.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -938,12 +884,6 @@ The contents are not valid under the current encoding rules.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -981,12 +921,6 @@ The contents are not valid under the current encoding rules.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Formats.Asn1.AsnReader</ReturnType>
       </ReturnValue>
@@ -1032,12 +966,6 @@ The contents are not valid under the current encoding rules.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Formats.Asn1.AsnReader</ReturnType>
       </ReturnValue>
@@ -1083,12 +1011,6 @@ The contents are not valid under the current encoding rules.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Formats.Asn1.AsnReader</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Formats.Asn1/AsnWriter.xml b/xml/System.Formats.Asn1/AsnWriter.xml
index bdf4c3bf612..eb157a4d307 100644
--- a/xml/System.Formats.Asn1/AsnWriter.xml
+++ b/xml/System.Formats.Asn1/AsnWriter.xml
@@ -91,12 +91,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -132,12 +126,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -191,12 +179,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -661,12 +643,6 @@ In <xref:System.Formats.Asn1.AsnEncodingRules.CER> and <xref:System.Formats.Asn1
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -742,12 +718,6 @@ This method only checks that the tag and length are encoded according to the cur
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -783,12 +753,6 @@ This method only checks that the tag and length are encoded according to the cur
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1025,12 +989,6 @@ This method only checks that the tag and length are encoded according to the cur
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1071,12 +1029,6 @@ The index of the bit array corresponds to the bit number in the encoded format,
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1112,12 +1064,6 @@ The index of the bit array corresponds to the bit number in the encoded format,
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1223,12 +1169,6 @@ The index of the bit array corresponds to the bit number in the encoded format,
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Formats.Cbor/CborContentException.xml b/xml/System.Formats.Cbor/CborContentException.xml
index b18024bee13..a004320c17d 100644
--- a/xml/System.Formats.Cbor/CborContentException.xml
+++ b/xml/System.Formats.Cbor/CborContentException.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The exception that's thrown when CBOR data is invalid.</summary>
@@ -82,10 +78,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Formats.Cbor/CborReader.xml b/xml/System.Formats.Cbor/CborReader.xml
index 949d3224398..f18eb00f4d3 100644
--- a/xml/System.Formats.Cbor/CborReader.xml
+++ b/xml/System.Formats.Cbor/CborReader.xml
@@ -286,12 +286,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1078,12 +1072,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Formats.Cbor/CborWriter.xml b/xml/System.Formats.Cbor/CborWriter.xml
index c1c355f3a61..808df502999 100644
--- a/xml/System.Formats.Cbor/CborWriter.xml
+++ b/xml/System.Formats.Cbor/CborWriter.xml
@@ -222,12 +222,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -417,12 +411,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1160,12 +1148,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Formats.Nrbf/ArrayRecord.xml b/xml/System.Formats.Nrbf/ArrayRecord.xml
index bae613caeb4..c76f96bdc7c 100644
--- a/xml/System.Formats.Nrbf/ArrayRecord.xml
+++ b/xml/System.Formats.Nrbf/ArrayRecord.xml
@@ -59,10 +59,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("The code for an array of the specified type might not be available.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("The code for an array of the specified type might not be available.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Array</ReturnType>
diff --git a/xml/System.Formats.Nrbf/ClassRecord.xml b/xml/System.Formats.Nrbf/ClassRecord.xml
index 3dd3e4e2e2c..88c61289d8f 100644
--- a/xml/System.Formats.Nrbf/ClassRecord.xml
+++ b/xml/System.Formats.Nrbf/ClassRecord.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/System.Formats.Nrbf/NrbfDecoder.xml b/xml/System.Formats.Nrbf/NrbfDecoder.xml
index 8f45a92d359..f79ba35e1e2 100644
--- a/xml/System.Formats.Nrbf/NrbfDecoder.xml
+++ b/xml/System.Formats.Nrbf/NrbfDecoder.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -217,12 +213,6 @@
         <AssemblyName>System.Formats.Nrbf</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Formats.Nrbf/PayloadOptions.xml b/xml/System.Formats.Nrbf/PayloadOptions.xml
index f96c60f518e..522600fafd5 100644
--- a/xml/System.Formats.Nrbf/PayloadOptions.xml
+++ b/xml/System.Formats.Nrbf/PayloadOptions.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/System.Formats.Nrbf/PrimitiveTypeRecord.xml b/xml/System.Formats.Nrbf/PrimitiveTypeRecord.xml
index d162d114a91..731174c94fd 100644
--- a/xml/System.Formats.Nrbf/PrimitiveTypeRecord.xml
+++ b/xml/System.Formats.Nrbf/PrimitiveTypeRecord.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/System.Formats.Nrbf/PrimitiveTypeRecord`1.xml b/xml/System.Formats.Nrbf/PrimitiveTypeRecord`1.xml
index 78759331a83..50c277a2be5 100644
--- a/xml/System.Formats.Nrbf/PrimitiveTypeRecord`1.xml
+++ b/xml/System.Formats.Nrbf/PrimitiveTypeRecord`1.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of the primitive value.</typeparam>
diff --git a/xml/System.Formats.Nrbf/SerializationRecord.xml b/xml/System.Formats.Nrbf/SerializationRecord.xml
index 92eaba6e858..c9e048bac92 100644
--- a/xml/System.Formats.Nrbf/SerializationRecord.xml
+++ b/xml/System.Formats.Nrbf/SerializationRecord.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/System.Formats.Nrbf/SerializationRecordId.xml b/xml/System.Formats.Nrbf/SerializationRecordId.xml
index 8c3cd4e95d7..82737b03c02 100644
--- a/xml/System.Formats.Nrbf/SerializationRecordId.xml
+++ b/xml/System.Formats.Nrbf/SerializationRecordId.xml
@@ -76,12 +76,6 @@
         <AssemblyName>System.Formats.Nrbf</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Formats.Tar/GnuTarEntry.xml b/xml/System.Formats.Tar/GnuTarEntry.xml
index 18bff9df29f..b7b8bce2985 100644
--- a/xml/System.Formats.Tar/GnuTarEntry.xml
+++ b/xml/System.Formats.Tar/GnuTarEntry.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a tar entry in the GNU format.</summary>
diff --git a/xml/System.Formats.Tar/PaxGlobalExtendedAttributesTarEntry.xml b/xml/System.Formats.Tar/PaxGlobalExtendedAttributesTarEntry.xml
index 0b176845432..d25120328f6 100644
--- a/xml/System.Formats.Tar/PaxGlobalExtendedAttributesTarEntry.xml
+++ b/xml/System.Formats.Tar/PaxGlobalExtendedAttributesTarEntry.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a global extended attributes tar entry of the PAX format.</summary>
diff --git a/xml/System.Formats.Tar/PaxTarEntry.xml b/xml/System.Formats.Tar/PaxTarEntry.xml
index 70ef6a39c94..d504e603a3c 100644
--- a/xml/System.Formats.Tar/PaxTarEntry.xml
+++ b/xml/System.Formats.Tar/PaxTarEntry.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a tar entry in the PAX format.</summary>
diff --git a/xml/System.Formats.Tar/PosixTarEntry.xml b/xml/System.Formats.Tar/PosixTarEntry.xml
index 7aa1fe72307..cd0f4280a8e 100644
--- a/xml/System.Formats.Tar/PosixTarEntry.xml
+++ b/xml/System.Formats.Tar/PosixTarEntry.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the core behavior of a tar entry from an archive of a format that is based on the POSIX IEEE P1003.1 standard from 1988. This includes the formats <see cref="F:System.Formats.Tar.TarEntryFormat.Ustar" /> (represented by the <see cref="T:System.Formats.Tar.UstarTarEntry" /> class), <see cref="F:System.Formats.Tar.TarEntryFormat.Pax" /> (represented by the <see cref="T:System.Formats.Tar.PaxTarEntry" /> class), and <see cref="F:System.Formats.Tar.TarEntryFormat.Gnu" /> (represented by the <see cref="T:System.Formats.Tar.GnuTarEntry" /> class).</summary>
diff --git a/xml/System.Formats.Tar/TarEntry.xml b/xml/System.Formats.Tar/TarEntry.xml
index b0f2a36e88d..d36f65ea3fe 100644
--- a/xml/System.Formats.Tar/TarEntry.xml
+++ b/xml/System.Formats.Tar/TarEntry.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the core behavior of a tar entry from an archive.</summary>
@@ -96,14 +92,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Stream</ReturnType>
diff --git a/xml/System.Formats.Tar/TarFile.xml b/xml/System.Formats.Tar/TarFile.xml
index 838db4afa44..2f8dd562bfd 100644
--- a/xml/System.Formats.Tar/TarFile.xml
+++ b/xml/System.Formats.Tar/TarFile.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides static methods for creating and extracting tar archives.</summary>
diff --git a/xml/System.Formats.Tar/TarReader.xml b/xml/System.Formats.Tar/TarReader.xml
index 17d39cf26f1..d1dddd3dafd 100644
--- a/xml/System.Formats.Tar/TarReader.xml
+++ b/xml/System.Formats.Tar/TarReader.xml
@@ -40,12 +40,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="archiveStream" Type="System.IO.Stream" />
         <Parameter Name="leaveOpen" Type="System.Boolean" />
@@ -128,12 +122,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Formats.Tar.TarEntry</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Formats.Tar/TarWriter.xml b/xml/System.Formats.Tar/TarWriter.xml
index ead983e03e0..10f45ae93f7 100644
--- a/xml/System.Formats.Tar/TarWriter.xml
+++ b/xml/System.Formats.Tar/TarWriter.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Writes a tar archive into a stream.</summary>
diff --git a/xml/System.Formats.Tar/UstarTarEntry.xml b/xml/System.Formats.Tar/UstarTarEntry.xml
index c45ae14c347..48f44628c6c 100644
--- a/xml/System.Formats.Tar/UstarTarEntry.xml
+++ b/xml/System.Formats.Tar/UstarTarEntry.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a tar entry from an archive of the Ustar format.</summary>
diff --git a/xml/System.Formats.Tar/V7TarEntry.xml b/xml/System.Formats.Tar/V7TarEntry.xml
index 289f21c0f34..aba1016fd54 100644
--- a/xml/System.Formats.Tar/V7TarEntry.xml
+++ b/xml/System.Formats.Tar/V7TarEntry.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a tar entry from an archive of the V7 format.</summary>
diff --git a/xml/System.Globalization/Calendar.xml b/xml/System.Globalization/Calendar.xml
index 227fdf8e00c..667e9c292c8 100644
--- a/xml/System.Globalization/Calendar.xml
+++ b/xml/System.Globalization/Calendar.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Globalization/CharUnicodeInfo.xml b/xml/System.Globalization/CharUnicodeInfo.xml
index 937891c222b..51075297a6e 100644
--- a/xml/System.Globalization/CharUnicodeInfo.xml
+++ b/xml/System.Globalization/CharUnicodeInfo.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Retrieves information about a Unicode character. This class cannot be inherited.</summary>
diff --git a/xml/System.Globalization/ChineseLunisolarCalendar.xml b/xml/System.Globalization/ChineseLunisolarCalendar.xml
index 051e11a1060..2a2f9726aca 100644
--- a/xml/System.Globalization/ChineseLunisolarCalendar.xml
+++ b/xml/System.Globalization/ChineseLunisolarCalendar.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Globalization/CompareInfo.xml b/xml/System.Globalization/CompareInfo.xml
index 70f47af00ef..2d921125e8f 100644
--- a/xml/System.Globalization/CompareInfo.xml
+++ b/xml/System.Globalization/CompareInfo.xml
@@ -72,10 +72,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -151,12 +147,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -252,12 +242,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -320,10 +304,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -437,12 +417,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -560,12 +534,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -682,12 +650,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -818,10 +780,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -950,12 +908,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1372,12 +1324,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1635,12 +1581,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1693,12 +1633,6 @@ Use <xref:System.Globalization.CompareInfo.GetSortKeyLength(System.ReadOnlySpan{
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1931,12 +1865,6 @@ Use <xref:System.Globalization.CompareInfo.GetSortKeyLength(System.ReadOnlySpan{
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1980,12 +1908,6 @@ Use <xref:System.Globalization.CompareInfo.GetSortKeyLength(System.ReadOnlySpan{
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2402,12 +2324,6 @@ Use <xref:System.Globalization.CompareInfo.GetSortKeyLength(System.ReadOnlySpan{
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -3192,12 +3108,6 @@ This method has greater overhead than other <xref:System.Globalization.CompareIn
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3339,12 +3249,6 @@ This method has greater overhead than other <xref:System.Globalization.CompareIn
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3470,12 +3374,6 @@ This method has greater overhead than other <xref:System.Globalization.CompareIn
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3712,12 +3610,6 @@ This method has greater overhead than other <xref:System.Globalization.CompareIn
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3859,12 +3751,6 @@ This method has greater overhead than other <xref:System.Globalization.CompareIn
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4111,12 +3997,6 @@ This method has greater overhead than other <xref:System.Globalization.CompareIn
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -4160,12 +4040,6 @@ This method has greater overhead than other <xref:System.Globalization.CompareIn
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -4586,12 +4460,6 @@ This method has greater overhead than other <xref:System.Globalization.CompareIn
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Globalization/CultureInfo.xml b/xml/System.Globalization/CultureInfo.xml
index 8df62350bfd..eb6b4b35083 100644
--- a/xml/System.Globalization/CultureInfo.xml
+++ b/xml/System.Globalization/CultureInfo.xml
@@ -72,10 +72,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -1148,14 +1144,6 @@ You might choose to override some of the values associated with the current cult
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[set: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1243,14 +1231,6 @@ You might choose to override some of the values associated with the current cult
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[set: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1542,12 +1522,6 @@ csc /resource:GreetingStrings.resources Example1.cs
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2196,10 +2170,6 @@ Setting `predefinedOnly` to `true` will ensure a culture is created only if the
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Globalization/CultureNotFoundException.xml b/xml/System.Globalization/CultureNotFoundException.xml
index 40cf85d80e4..666c5c88ee3 100644
--- a/xml/System.Globalization/CultureNotFoundException.xml
+++ b/xml/System.Globalization/CultureNotFoundException.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -259,10 +255,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -670,10 +662,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -842,10 +830,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Globalization/DateTimeFormatInfo.xml b/xml/System.Globalization/DateTimeFormatInfo.xml
index 63fc4d33928..7ef97e537f1 100644
--- a/xml/System.Globalization/DateTimeFormatInfo.xml
+++ b/xml/System.Globalization/DateTimeFormatInfo.xml
@@ -79,10 +79,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -1621,12 +1617,6 @@ This property is affected if the value of the <xref:System.Globalization.DateTim
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Globalization/GlobalizationExtensions.xml b/xml/System.Globalization/GlobalizationExtensions.xml
index e1c1930746a..e8c18af4b6d 100644
--- a/xml/System.Globalization/GlobalizationExtensions.xml
+++ b/xml/System.Globalization/GlobalizationExtensions.xml
@@ -104,12 +104,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.StringComparer</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Globalization/GregorianCalendar.xml b/xml/System.Globalization/GregorianCalendar.xml
index 2ca027e3345..76edab430a3 100644
--- a/xml/System.Globalization/GregorianCalendar.xml
+++ b/xml/System.Globalization/GregorianCalendar.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Globalization/HebrewCalendar.xml b/xml/System.Globalization/HebrewCalendar.xml
index 91c381f1e93..c9a3f7d17b4 100644
--- a/xml/System.Globalization/HebrewCalendar.xml
+++ b/xml/System.Globalization/HebrewCalendar.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Globalization/HijriCalendar.xml b/xml/System.Globalization/HijriCalendar.xml
index 521911aeb55..ab16e3fb0e0 100644
--- a/xml/System.Globalization/HijriCalendar.xml
+++ b/xml/System.Globalization/HijriCalendar.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Globalization/IdnMapping.xml b/xml/System.Globalization/IdnMapping.xml
index d4881f05a2d..f75f01009e8 100644
--- a/xml/System.Globalization/IdnMapping.xml
+++ b/xml/System.Globalization/IdnMapping.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Supports the use of non-ASCII characters for Internet domain names. This class cannot be inherited.</summary>
@@ -235,12 +231,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Globalization/JapaneseCalendar.xml b/xml/System.Globalization/JapaneseCalendar.xml
index 654e42f3131..146426a4611 100644
--- a/xml/System.Globalization/JapaneseCalendar.xml
+++ b/xml/System.Globalization/JapaneseCalendar.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Globalization/JapaneseLunisolarCalendar.xml b/xml/System.Globalization/JapaneseLunisolarCalendar.xml
index 44541de6fc4..cea084057c4 100644
--- a/xml/System.Globalization/JapaneseLunisolarCalendar.xml
+++ b/xml/System.Globalization/JapaneseLunisolarCalendar.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Globalization/JulianCalendar.xml b/xml/System.Globalization/JulianCalendar.xml
index 3b7abdce308..80883154e06 100644
--- a/xml/System.Globalization/JulianCalendar.xml
+++ b/xml/System.Globalization/JulianCalendar.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Globalization/KoreanCalendar.xml b/xml/System.Globalization/KoreanCalendar.xml
index b97bfaeddf2..cf90a7caa95 100644
--- a/xml/System.Globalization/KoreanCalendar.xml
+++ b/xml/System.Globalization/KoreanCalendar.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Globalization/KoreanLunisolarCalendar.xml b/xml/System.Globalization/KoreanLunisolarCalendar.xml
index ff7d337c549..ef77998ec37 100644
--- a/xml/System.Globalization/KoreanLunisolarCalendar.xml
+++ b/xml/System.Globalization/KoreanLunisolarCalendar.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Globalization/NumberFormatInfo.xml b/xml/System.Globalization/NumberFormatInfo.xml
index e4490fb34d1..f2bbfbe1a37 100644
--- a/xml/System.Globalization/NumberFormatInfo.xml
+++ b/xml/System.Globalization/NumberFormatInfo.xml
@@ -71,10 +71,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -924,12 +920,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Globalization/PersianCalendar.xml b/xml/System.Globalization/PersianCalendar.xml
index 33ddc7658e3..03621c72f66 100644
--- a/xml/System.Globalization/PersianCalendar.xml
+++ b/xml/System.Globalization/PersianCalendar.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Globalization/RegionInfo.xml b/xml/System.Globalization/RegionInfo.xml
index 751d12c4d67..29464802f87 100644
--- a/xml/System.Globalization/RegionInfo.xml
+++ b/xml/System.Globalization/RegionInfo.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -697,12 +693,6 @@ This constructor throws an <xref:System.ArgumentException> if `name` is a neutra
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Globalization/SortKey.xml b/xml/System.Globalization/SortKey.xml
index 26a39a10c21..aac85e80917 100644
--- a/xml/System.Globalization/SortKey.xml
+++ b/xml/System.Globalization/SortKey.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -198,12 +194,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Globalization/SortVersion.xml b/xml/System.Globalization/SortVersion.xml
index 95acc341de7..9b2c8e103ab 100644
--- a/xml/System.Globalization/SortVersion.xml
+++ b/xml/System.Globalization/SortVersion.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Globalization/StringInfo.xml b/xml/System.Globalization/StringInfo.xml
index 2a08dcc41ee..e637f6e3c03 100644
--- a/xml/System.Globalization/StringInfo.xml
+++ b/xml/System.Globalization/StringInfo.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -272,10 +268,6 @@ This example uses the <xref:System.Globalization.StringInfo.GetTextElementEnumer
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -532,12 +524,6 @@ This example uses the <xref:System.Globalization.StringInfo.GetTextElementEnumer
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Globalization/TaiwanCalendar.xml b/xml/System.Globalization/TaiwanCalendar.xml
index 740aa72d3ec..8d449313838 100644
--- a/xml/System.Globalization/TaiwanCalendar.xml
+++ b/xml/System.Globalization/TaiwanCalendar.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Globalization/TaiwanLunisolarCalendar.xml b/xml/System.Globalization/TaiwanLunisolarCalendar.xml
index f48b89666e4..7f3013db8cd 100644
--- a/xml/System.Globalization/TaiwanLunisolarCalendar.xml
+++ b/xml/System.Globalization/TaiwanLunisolarCalendar.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Globalization/TextElementEnumerator.xml b/xml/System.Globalization/TextElementEnumerator.xml
index bdf0a0bc979..f6d176a6c58 100644
--- a/xml/System.Globalization/TextElementEnumerator.xml
+++ b/xml/System.Globalization/TextElementEnumerator.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Globalization/TextInfo.xml b/xml/System.Globalization/TextInfo.xml
index fdb5fe0851c..9046580ebb5 100644
--- a/xml/System.Globalization/TextInfo.xml
+++ b/xml/System.Globalization/TextInfo.xml
@@ -81,10 +81,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -382,12 +378,6 @@ The user might use the regional and language options portion of Control Panel to
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Globalization/ThaiBuddhistCalendar.xml b/xml/System.Globalization/ThaiBuddhistCalendar.xml
index ed17eddda0b..6b054f6b690 100644
--- a/xml/System.Globalization/ThaiBuddhistCalendar.xml
+++ b/xml/System.Globalization/ThaiBuddhistCalendar.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Globalization/UmAlQuraCalendar.xml b/xml/System.Globalization/UmAlQuraCalendar.xml
index dd690862ec3..995449e29b4 100644
--- a/xml/System.Globalization/UmAlQuraCalendar.xml
+++ b/xml/System.Globalization/UmAlQuraCalendar.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.IO.Compression/BrotliStream.xml b/xml/System.IO.Compression/BrotliStream.xml
index b0e69f10c06..b6d9b8ab20f 100644
--- a/xml/System.IO.Compression/BrotliStream.xml
+++ b/xml/System.IO.Compression/BrotliStream.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods and properties used to compress and decompress streams by using the Brotli data format specification.</summary>
@@ -774,12 +770,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -865,12 +855,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -1064,12 +1048,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1145,12 +1123,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Compression/DeflateStream.xml b/xml/System.IO.Compression/DeflateStream.xml
index d6b2c69fc0b..96bd13f7fde 100644
--- a/xml/System.IO.Compression/DeflateStream.xml
+++ b/xml/System.IO.Compression/DeflateStream.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods and properties for compressing and decompressing streams by using the Deflate algorithm.</summary>
@@ -1282,12 +1278,6 @@ This method stores in the task it returns all non-usage exceptions that the meth
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1422,12 +1412,6 @@ The following example shows how to compress and decompress bytes by using the <x
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -1685,12 +1669,6 @@ Use the <xref:System.IO.Compression.DeflateStream.CanRead%2A> property to determ
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1800,12 +1778,6 @@ The following example shows how to compress and decompress bytes by using the <x
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Compression/GZipStream.xml b/xml/System.IO.Compression/GZipStream.xml
index cf953f70817..cc4b7da1f14 100644
--- a/xml/System.IO.Compression/GZipStream.xml
+++ b/xml/System.IO.Compression/GZipStream.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods and properties used to compress and decompress streams by using the GZip data format specification.</summary>
@@ -1297,12 +1293,6 @@ This method stores in the task it returns all non-usage exceptions that the meth
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1443,12 +1433,6 @@ The following example shows how to compress and decompress bytes by using the <x
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -1708,12 +1692,6 @@ Use the <xref:System.IO.Compression.GZipStream.CanRead%2A> property to determine
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1832,12 +1810,6 @@ The following example shows how to compress and decompress bytes by using the <x
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Compression/ZLibStream.xml b/xml/System.IO.Compression/ZLibStream.xml
index 3a8215c0c57..4afec505095 100644
--- a/xml/System.IO.Compression/ZLibStream.xml
+++ b/xml/System.IO.Compression/ZLibStream.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods and properties used to compress and decompress streams by using the zlib data format specification.</summary>
@@ -689,12 +685,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -754,12 +744,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -908,12 +892,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -971,12 +949,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Compression/ZipArchive.xml b/xml/System.IO.Compression/ZipArchive.xml
index 22d78b01d51..4f643358dcf 100644
--- a/xml/System.IO.Compression/ZipArchive.xml
+++ b/xml/System.IO.Compression/ZipArchive.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a package of compressed files in the zip archive format.</summary>
diff --git a/xml/System.IO.Compression/ZipArchiveEntry.xml b/xml/System.IO.Compression/ZipArchiveEntry.xml
index cbd5adb9b0b..daa0f0c4565 100644
--- a/xml/System.IO.Compression/ZipArchiveEntry.xml
+++ b/xml/System.IO.Compression/ZipArchiveEntry.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a compressed file within a zip archive.</summary>
diff --git a/xml/System.IO.Compression/ZipFile.xml b/xml/System.IO.Compression/ZipFile.xml
index 1a8ad785152..e2631f4789e 100644
--- a/xml/System.IO.Compression/ZipFile.xml
+++ b/xml/System.IO.Compression/ZipFile.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides static methods for creating, extracting, and opening zip archives.</summary>
diff --git a/xml/System.IO.Compression/ZipFileExtensions.xml b/xml/System.IO.Compression/ZipFileExtensions.xml
index d8bce2ef927..35ace2f08e6 100644
--- a/xml/System.IO.Compression/ZipFileExtensions.xml
+++ b/xml/System.IO.Compression/ZipFileExtensions.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides extension methods for the <see cref="T:System.IO.Compression.ZipArchive" /> and <see cref="T:System.IO.Compression.ZipArchiveEntry" /> classes.</summary>
diff --git a/xml/System.IO.Enumeration/FileSystemEntry.xml b/xml/System.IO.Enumeration/FileSystemEntry.xml
index 14a04d241c7..563e35291f2 100644
--- a/xml/System.IO.Enumeration/FileSystemEntry.xml
+++ b/xml/System.IO.Enumeration/FileSystemEntry.xml
@@ -472,12 +472,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.FileSystemInfo</ReturnType>
       </ReturnValue>
@@ -513,12 +507,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -554,12 +542,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Enumeration/FileSystemEnumerable`1.xml b/xml/System.IO.Enumeration/FileSystemEnumerable`1.xml
index f0030a79183..0e8e3a03294 100644
--- a/xml/System.IO.Enumeration/FileSystemEnumerable`1.xml
+++ b/xml/System.IO.Enumeration/FileSystemEnumerable`1.xml
@@ -96,12 +96,6 @@ The following example shows how to use the <xref:System.IO.Enumeration.FileSyste
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="directory" Type="System.String" />
         <Parameter Name="transform" Type="System.IO.Enumeration.FileSystemEnumerable&lt;TResult&gt;+FindTransform" />
@@ -157,12 +151,6 @@ The following example shows how to use the <xref:System.IO.Enumeration.FileSyste
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IEnumerator&lt;TResult&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Enumeration/FileSystemEnumerator`1.xml b/xml/System.IO.Enumeration/FileSystemEnumerator`1.xml
index db040b401a3..507f8fc260c 100644
--- a/xml/System.IO.Enumeration/FileSystemEnumerator`1.xml
+++ b/xml/System.IO.Enumeration/FileSystemEnumerator`1.xml
@@ -89,12 +89,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="directory" Type="System.String" />
         <Parameter Name="options" Type="System.IO.EnumerationOptions">
@@ -185,10 +179,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TResult</ReturnType>
@@ -550,12 +540,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TResult</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Enumeration/FileSystemName.xml b/xml/System.IO.Enumeration/FileSystemName.xml
index 86305b40bce..5bf5d7d0c5e 100644
--- a/xml/System.IO.Enumeration/FileSystemName.xml
+++ b/xml/System.IO.Enumeration/FileSystemName.xml
@@ -165,12 +165,6 @@ Matching will not correspond to Win32 behavior unless you transform the expressi
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Hashing/Crc32.xml b/xml/System.IO.Hashing/Crc32.xml
index de51dda0be0..3489b383568 100644
--- a/xml/System.IO.Hashing/Crc32.xml
+++ b/xml/System.IO.Hashing/Crc32.xml
@@ -174,12 +174,6 @@ There are multiple, incompatible, definitions of a 32-bit cyclic redundancy
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Hashing/Crc64.xml b/xml/System.IO.Hashing/Crc64.xml
index ef567865b6d..c3cb8390143 100644
--- a/xml/System.IO.Hashing/Crc64.xml
+++ b/xml/System.IO.Hashing/Crc64.xml
@@ -174,12 +174,6 @@ There are multiple, incompatible, definitions of a 64-bit cyclic redundancy
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Hashing/NonCryptographicHashAlgorithm.xml b/xml/System.IO.Hashing/NonCryptographicHashAlgorithm.xml
index 973a8f15297..98232ee149d 100644
--- a/xml/System.IO.Hashing/NonCryptographicHashAlgorithm.xml
+++ b/xml/System.IO.Hashing/NonCryptographicHashAlgorithm.xml
@@ -58,12 +58,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -91,12 +85,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -148,12 +136,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -186,12 +168,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -284,12 +260,6 @@ The <xref:System.IO.Hashing.NonCryptographicHashAlgorithm> class validates the
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Hashing/XxHash128.xml b/xml/System.IO.Hashing/XxHash128.xml
index 1c0236070da..2c94f9a8526 100644
--- a/xml/System.IO.Hashing/XxHash128.xml
+++ b/xml/System.IO.Hashing/XxHash128.xml
@@ -157,12 +157,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -191,12 +185,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Hashing/XxHash3.xml b/xml/System.IO.Hashing/XxHash3.xml
index ebbfcbe016f..49ca2a0976d 100644
--- a/xml/System.IO.Hashing/XxHash3.xml
+++ b/xml/System.IO.Hashing/XxHash3.xml
@@ -157,12 +157,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -191,12 +185,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Hashing/XxHash32.xml b/xml/System.IO.Hashing/XxHash32.xml
index fba3988a2c1..95efe6b8f76 100644
--- a/xml/System.IO.Hashing/XxHash32.xml
+++ b/xml/System.IO.Hashing/XxHash32.xml
@@ -162,12 +162,6 @@ The XxHash32 algorithm supports an optional seed value.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -196,12 +190,6 @@ The XxHash32 algorithm supports an optional seed value.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Hashing/XxHash64.xml b/xml/System.IO.Hashing/XxHash64.xml
index 6ae456c342f..3d863968704 100644
--- a/xml/System.IO.Hashing/XxHash64.xml
+++ b/xml/System.IO.Hashing/XxHash64.xml
@@ -162,12 +162,6 @@ The XxHash64 algorithm supports an optional seed value.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -196,12 +190,6 @@ The XxHash64 algorithm supports an optional seed value.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.IsolatedStorage/INormalizeForIsolatedStorage.xml b/xml/System.IO.IsolatedStorage/INormalizeForIsolatedStorage.xml
index 1c1af8a3c1f..002261ebc37 100644
--- a/xml/System.IO.IsolatedStorage/INormalizeForIsolatedStorage.xml
+++ b/xml/System.IO.IsolatedStorage/INormalizeForIsolatedStorage.xml
@@ -38,10 +38,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.IO.IsolatedStorage/IsolatedStorage.xml b/xml/System.IO.IsolatedStorage/IsolatedStorage.xml
index ff2e31088e9..01c159003e5 100644
--- a/xml/System.IO.IsolatedStorage/IsolatedStorage.xml
+++ b/xml/System.IO.IsolatedStorage/IsolatedStorage.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -572,10 +568,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.IO.IsolatedStorage/IsolatedStorageException.xml b/xml/System.IO.IsolatedStorage/IsolatedStorageException.xml
index 7850fc53d6c..4b8b2748008 100644
--- a/xml/System.IO.IsolatedStorage/IsolatedStorageException.xml
+++ b/xml/System.IO.IsolatedStorage/IsolatedStorageException.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -234,10 +230,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.IO.IsolatedStorage/IsolatedStorageFile.xml b/xml/System.IO.IsolatedStorage/IsolatedStorageFile.xml
index 74ab4993438..6c358172fe3 100644
--- a/xml/System.IO.IsolatedStorage/IsolatedStorageFile.xml
+++ b/xml/System.IO.IsolatedStorage/IsolatedStorageFile.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -2007,10 +2003,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2100,10 +2092,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.IO.IsolatedStorage/IsolatedStorageFileStream.xml b/xml/System.IO.IsolatedStorage/IsolatedStorageFileStream.xml
index fd89a2b18d2..712cc71d809 100644
--- a/xml/System.IO.IsolatedStorage/IsolatedStorageFileStream.xml
+++ b/xml/System.IO.IsolatedStorage/IsolatedStorageFileStream.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -1774,12 +1770,6 @@ Dim source As New IsolatedStorageFileStream(UserName,FileMode.Open,isoFile)
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1880,12 +1870,6 @@ The <xref:System.IO.IsolatedStorage.IsolatedStorageFileStream.Read%2A> method wi
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -2262,12 +2246,6 @@ This method stores in the task it returns all non-usage exceptions that the meth
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2367,12 +2345,6 @@ If the write operation is successful, the current position of the <xref:System.I
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.MemoryMappedFiles/MemoryMappedFile.xml b/xml/System.IO.MemoryMappedFiles/MemoryMappedFile.xml
index 755dc6eb990..d7f952e732f 100644
--- a/xml/System.IO.MemoryMappedFiles/MemoryMappedFile.xml
+++ b/xml/System.IO.MemoryMappedFiles/MemoryMappedFile.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a memory-mapped file.</summary>
diff --git a/xml/System.IO.MemoryMappedFiles/MemoryMappedViewAccessor.xml b/xml/System.IO.MemoryMappedFiles/MemoryMappedViewAccessor.xml
index 4c101ba28de..3459247dc45 100644
--- a/xml/System.IO.MemoryMappedFiles/MemoryMappedViewAccessor.xml
+++ b/xml/System.IO.MemoryMappedFiles/MemoryMappedViewAccessor.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a randomly accessed view of a memory-mapped file.</summary>
diff --git a/xml/System.IO.MemoryMappedFiles/MemoryMappedViewStream.xml b/xml/System.IO.MemoryMappedFiles/MemoryMappedViewStream.xml
index 8fd8493ae16..c49708a3f39 100644
--- a/xml/System.IO.MemoryMappedFiles/MemoryMappedViewStream.xml
+++ b/xml/System.IO.MemoryMappedFiles/MemoryMappedViewStream.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a view of a memory-mapped file as a sequentially accessed stream.</summary>
diff --git a/xml/System.IO.Packaging/PackUriHelper.xml b/xml/System.IO.Packaging/PackUriHelper.xml
index 00bc6a239ff..46c599b50a5 100644
--- a/xml/System.IO.Packaging/PackUriHelper.xml
+++ b/xml/System.IO.Packaging/PackUriHelper.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides utility methods to compose and parse pack URI objects.</summary>
@@ -76,12 +72,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -153,12 +143,6 @@
         <AssemblyVersion>3.0.0.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Packaging/Package.xml b/xml/System.IO.Packaging/Package.xml
index 59af9f8f76e..60ac5dfc749 100644
--- a/xml/System.IO.Packaging/Package.xml
+++ b/xml/System.IO.Packaging/Package.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a container that can store multiple data objects.</summary>
diff --git a/xml/System.IO.Packaging/PackagePart.xml b/xml/System.IO.Packaging/PackagePart.xml
index 5846edf88d9..a7b634ac742 100644
--- a/xml/System.IO.Packaging/PackagePart.xml
+++ b/xml/System.IO.Packaging/PackagePart.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a base class for parts stored in a <see cref="T:System.IO.Packaging.Package" />.  This class is abstract.</summary>
@@ -1172,12 +1168,6 @@
         <AssemblyVersion>3.0.0.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Stream</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Packaging/PackagePartCollection.xml b/xml/System.IO.Packaging/PackagePartCollection.xml
index c9a90029597..a05562ace62 100644
--- a/xml/System.IO.Packaging/PackagePartCollection.xml
+++ b/xml/System.IO.Packaging/PackagePartCollection.xml
@@ -83,12 +83,6 @@
         <AssemblyVersion>3.0.0.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IEnumerator&lt;System.IO.Packaging.PackagePart&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Packaging/PackageProperties.xml b/xml/System.IO.Packaging/PackageProperties.xml
index 9dffe76c151..8f39e4cf881 100644
--- a/xml/System.IO.Packaging/PackageProperties.xml
+++ b/xml/System.IO.Packaging/PackageProperties.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the core properties of a <see cref="T:System.IO.Packaging.Package" />.</summary>
diff --git a/xml/System.IO.Packaging/PackageRelationship.xml b/xml/System.IO.Packaging/PackageRelationship.xml
index 005ca442da7..93364274e9d 100644
--- a/xml/System.IO.Packaging/PackageRelationship.xml
+++ b/xml/System.IO.Packaging/PackageRelationship.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an association between a source <see cref="T:System.IO.Packaging.Package" /> or <see cref="T:System.IO.Packaging.PackagePart" />, and a target object which can be a <see cref="T:System.IO.Packaging.PackagePart" /> or external resource.</summary>
diff --git a/xml/System.IO.Packaging/PackageRelationshipCollection.xml b/xml/System.IO.Packaging/PackageRelationshipCollection.xml
index f92517da3dd..5afb5bd6054 100644
--- a/xml/System.IO.Packaging/PackageRelationshipCollection.xml
+++ b/xml/System.IO.Packaging/PackageRelationshipCollection.xml
@@ -93,12 +93,6 @@
         <AssemblyVersion>3.0.0.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IEnumerator&lt;System.IO.Packaging.PackageRelationship&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Packaging/PackageRelationshipSelector.xml b/xml/System.IO.Packaging/PackageRelationshipSelector.xml
index a379cba329b..6ac57ffa76d 100644
--- a/xml/System.IO.Packaging/PackageRelationshipSelector.xml
+++ b/xml/System.IO.Packaging/PackageRelationshipSelector.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines <see cref="T:System.IO.Packaging.PackageRelationship" /> criteria to select part-level or package-level relationships.</summary>
diff --git a/xml/System.IO.Packaging/ZipPackage.xml b/xml/System.IO.Packaging/ZipPackage.xml
index d65739f8ff7..99a4c062b7c 100644
--- a/xml/System.IO.Packaging/ZipPackage.xml
+++ b/xml/System.IO.Packaging/ZipPackage.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Implements a derived subclass of the abstract <see cref="T:System.IO.Packaging.Package" /> base class - the <see cref="T:System.IO.Packaging.ZipPackage" /> class uses a ZIP archive as the container store. This class cannot be inherited.</summary>
diff --git a/xml/System.IO.Packaging/ZipPackagePart.xml b/xml/System.IO.Packaging/ZipPackagePart.xml
index 43b2dc8c5b1..62c187df252 100644
--- a/xml/System.IO.Packaging/ZipPackagePart.xml
+++ b/xml/System.IO.Packaging/ZipPackagePart.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a part that is stored in a <see cref="T:System.IO.Packaging.ZipPackage" />.</summary>
@@ -88,12 +84,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Stream</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Pipelines/IDuplexPipe.xml b/xml/System.IO.Pipelines/IDuplexPipe.xml
index 295ad890648..044e4c0dd76 100644
--- a/xml/System.IO.Pipelines/IDuplexPipe.xml
+++ b/xml/System.IO.Pipelines/IDuplexPipe.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Defines a class that provides a duplex pipe from which data can be read from and written to.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.IO.Pipelines/Pipe.xml b/xml/System.IO.Pipelines/Pipe.xml
index 1e2dd3f99a6..7b4df9667cd 100644
--- a/xml/System.IO.Pipelines/Pipe.xml
+++ b/xml/System.IO.Pipelines/Pipe.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The default <see cref="T:System.IO.Pipelines.PipeWriter" /> and <see cref="T:System.IO.Pipelines.PipeReader" /> implementation.</summary>
diff --git a/xml/System.IO.Pipelines/PipeOptions.xml b/xml/System.IO.Pipelines/PipeOptions.xml
index 64a97466f32..03db280694c 100644
--- a/xml/System.IO.Pipelines/PipeOptions.xml
+++ b/xml/System.IO.Pipelines/PipeOptions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a set of <see cref="T:System.IO.Pipelines.Pipe" /> options.</summary>
@@ -48,12 +44,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="pool" Type="System.Buffers.MemoryPool&lt;System.Byte&gt;" />
         <Parameter Name="readerScheduler" Type="System.IO.Pipelines.PipeScheduler" />
diff --git a/xml/System.IO.Pipelines/PipeReader.xml b/xml/System.IO.Pipelines/PipeReader.xml
index e6110925da7..01f1446e6e8 100644
--- a/xml/System.IO.Pipelines/PipeReader.xml
+++ b/xml/System.IO.Pipelines/PipeReader.xml
@@ -158,12 +158,6 @@ The examined parameter should be greater than or equal to the examined position
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Stream</ReturnType>
       </ReturnValue>
@@ -219,12 +213,6 @@ The canceled <xref:System.IO.Pipelines.PipeReader.ReadAsync(System.Threading.Can
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -249,12 +237,6 @@ The canceled <xref:System.IO.Pipelines.PipeReader.ReadAsync(System.Threading.Can
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
@@ -280,12 +262,6 @@ The canceled <xref:System.IO.Pipelines.PipeReader.ReadAsync(System.Threading.Can
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -314,12 +290,6 @@ The canceled <xref:System.IO.Pipelines.PipeReader.ReadAsync(System.Threading.Can
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -374,12 +344,6 @@ The canceled <xref:System.IO.Pipelines.PipeReader.ReadAsync(System.Threading.Can
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Pipelines.PipeReader</ReturnType>
       </ReturnValue>
@@ -420,10 +384,6 @@ The canceled <xref:System.IO.Pipelines.PipeReader.ReadAsync(System.Threading.Can
           <AttributeName Language="C#">[System.Obsolete("OnWriterCompleted has been deprecated and may not be invoked on all implementations of PipeReader.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("OnWriterCompleted has been deprecated and may not be invoked on all implementations of PipeReader.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.IO.Pipelines/PipeScheduler.xml b/xml/System.IO.Pipelines/PipeScheduler.xml
index 8dc9ce29b6d..6f4db29b48c 100644
--- a/xml/System.IO.Pipelines/PipeScheduler.xml
+++ b/xml/System.IO.Pipelines/PipeScheduler.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Abstraction for running <see cref="T:System.IO.Pipelines.PipeReader" /> and <see cref="T:System.IO.Pipelines.PipeWriter" /> callbacks and continuations.</summary>
@@ -89,12 +85,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Pipelines/PipeWriter.xml b/xml/System.IO.Pipelines/PipeWriter.xml
index f9b3ff74039..d465fff5640 100644
--- a/xml/System.IO.Pipelines/PipeWriter.xml
+++ b/xml/System.IO.Pipelines/PipeWriter.xml
@@ -88,12 +88,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Stream</ReturnType>
       </ReturnValue>
@@ -172,12 +166,6 @@ The canceled <xref:System.IO.Pipelines.PipeWriter.FlushAsync(System.Threading.Ca
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -202,12 +190,6 @@ The canceled <xref:System.IO.Pipelines.PipeWriter.FlushAsync(System.Threading.Ca
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
@@ -233,12 +215,6 @@ The canceled <xref:System.IO.Pipelines.PipeWriter.FlushAsync(System.Threading.Ca
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -267,12 +243,6 @@ The canceled <xref:System.IO.Pipelines.PipeWriter.FlushAsync(System.Threading.Ca
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Pipelines.PipeWriter</ReturnType>
       </ReturnValue>
@@ -417,10 +387,6 @@ You must request a new buffer after calling <xref:System.IO.Pipelines.PipeWriter
           <AttributeName Language="C#">[System.Obsolete("OnReaderCompleted has been deprecated and may not be invoked on all implementations of PipeWriter.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("OnReaderCompleted has been deprecated and may not be invoked on all implementations of PipeWriter.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.IO.Pipelines/StreamPipeExtensions.xml b/xml/System.IO.Pipelines/StreamPipeExtensions.xml
index 0f27d284d7a..acf6ea265c8 100644
--- a/xml/System.IO.Pipelines/StreamPipeExtensions.xml
+++ b/xml/System.IO.Pipelines/StreamPipeExtensions.xml
@@ -36,12 +36,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Pipelines/StreamPipeReaderOptions.xml b/xml/System.IO.Pipelines/StreamPipeReaderOptions.xml
index ea55f99f72f..65ad7a19586 100644
--- a/xml/System.IO.Pipelines/StreamPipeReaderOptions.xml
+++ b/xml/System.IO.Pipelines/StreamPipeReaderOptions.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a set of options for controlling the creation of the <see cref="T:System.IO.Pipelines.PipeReader" />.</summary>
@@ -47,12 +43,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="pool" Type="System.Buffers.MemoryPool&lt;System.Byte&gt;" />
         <Parameter Name="bufferSize" Type="System.Int32" />
@@ -81,12 +71,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="pool" Type="System.Buffers.MemoryPool&lt;System.Byte&gt;" />
         <Parameter Name="bufferSize" Type="System.Int32" />
diff --git a/xml/System.IO.Pipelines/StreamPipeWriterOptions.xml b/xml/System.IO.Pipelines/StreamPipeWriterOptions.xml
index af73d3053a6..b9a5ac9a54f 100644
--- a/xml/System.IO.Pipelines/StreamPipeWriterOptions.xml
+++ b/xml/System.IO.Pipelines/StreamPipeWriterOptions.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a set of options for controlling the creation of the <see cref="T:System.IO.Pipelines.PipeWriter" />.</summary>
@@ -46,12 +42,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="pool" Type="System.Buffers.MemoryPool&lt;System.Byte&gt;" />
         <Parameter Name="minimumBufferSize" Type="System.Int32" />
diff --git a/xml/System.IO.Pipes/AnonymousPipeClientStream.xml b/xml/System.IO.Pipes/AnonymousPipeClientStream.xml
index 859f6a1e44d..1bdec399b85 100644
--- a/xml/System.IO.Pipes/AnonymousPipeClientStream.xml
+++ b/xml/System.IO.Pipes/AnonymousPipeClientStream.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Exposes the client side of an anonymous pipe stream, which supports both synchronous and asynchronous read and write operations (without cancellation support on Windows platforms).</summary>
diff --git a/xml/System.IO.Pipes/AnonymousPipeServerStream.xml b/xml/System.IO.Pipes/AnonymousPipeServerStream.xml
index 6ef6573e7fb..0ebc14a1017 100644
--- a/xml/System.IO.Pipes/AnonymousPipeServerStream.xml
+++ b/xml/System.IO.Pipes/AnonymousPipeServerStream.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Exposes a stream around an anonymous pipe, which supports both synchronous and asynchronous read and write operations.</summary>
diff --git a/xml/System.IO.Pipes/AnonymousPipeServerStreamAcl.xml b/xml/System.IO.Pipes/AnonymousPipeServerStreamAcl.xml
index ee3a864191c..40c06ef28e1 100644
--- a/xml/System.IO.Pipes/AnonymousPipeServerStreamAcl.xml
+++ b/xml/System.IO.Pipes/AnonymousPipeServerStreamAcl.xml
@@ -38,12 +38,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Pipes.AnonymousPipeServerStream</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Pipes/NamedPipeClientStream.xml b/xml/System.IO.Pipes/NamedPipeClientStream.xml
index 4f0059f2fce..09ddccd2ae2 100644
--- a/xml/System.IO.Pipes/NamedPipeClientStream.xml
+++ b/xml/System.IO.Pipes/NamedPipeClientStream.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Exposes a <see cref="T:System.IO.Stream" /> around a named pipe, which supports both synchronous and asynchronous read and write operations.</summary>
diff --git a/xml/System.IO.Pipes/NamedPipeServerStream.xml b/xml/System.IO.Pipes/NamedPipeServerStream.xml
index 83de2e3650d..02a98c37184 100644
--- a/xml/System.IO.Pipes/NamedPipeServerStream.xml
+++ b/xml/System.IO.Pipes/NamedPipeServerStream.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Exposes a <see cref="T:System.IO.Stream" /> around a named pipe, supporting both synchronous and asynchronous read and write operations.</summary>
@@ -1013,10 +1009,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.IO.Pipes/NamedPipeServerStreamAcl.xml b/xml/System.IO.Pipes/NamedPipeServerStreamAcl.xml
index d290aaa4c64..b7fa548fae0 100644
--- a/xml/System.IO.Pipes/NamedPipeServerStreamAcl.xml
+++ b/xml/System.IO.Pipes/NamedPipeServerStreamAcl.xml
@@ -37,12 +37,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Pipes.NamedPipeServerStream</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Pipes/PipeAccessRule.xml b/xml/System.IO.Pipes/PipeAccessRule.xml
index 10f4f1ef451..af57664612c 100644
--- a/xml/System.IO.Pipes/PipeAccessRule.xml
+++ b/xml/System.IO.Pipes/PipeAccessRule.xml
@@ -31,10 +31,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an abstraction of an access control entry (ACE) that defines an access rule for a pipe.</summary>
diff --git a/xml/System.IO.Pipes/PipeAuditRule.xml b/xml/System.IO.Pipes/PipeAuditRule.xml
index 553ee848cc9..d499e1a7253 100644
--- a/xml/System.IO.Pipes/PipeAuditRule.xml
+++ b/xml/System.IO.Pipes/PipeAuditRule.xml
@@ -31,10 +31,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an abstraction of an access control entry (ACE) that defines an audit rule for a pipe.</summary>
diff --git a/xml/System.IO.Pipes/PipeSecurity.xml b/xml/System.IO.Pipes/PipeSecurity.xml
index 4589fd8d3d2..99a140397d3 100644
--- a/xml/System.IO.Pipes/PipeSecurity.xml
+++ b/xml/System.IO.Pipes/PipeSecurity.xml
@@ -31,10 +31,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the access control and audit security for a pipe.</summary>
diff --git a/xml/System.IO.Pipes/PipeStream.xml b/xml/System.IO.Pipes/PipeStream.xml
index d1ccec4fda6..4ecab9ba415 100644
--- a/xml/System.IO.Pipes/PipeStream.xml
+++ b/xml/System.IO.Pipes/PipeStream.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Exposes a <see cref="T:System.IO.Stream" /> object around a pipe, which supports both anonymous and named pipes.</summary>
@@ -1088,10 +1084,6 @@ When the disposing parameter is `true`, this method releases all resources held
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -1516,12 +1508,6 @@ When the disposing parameter is `true`, this method releases all resources held
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1676,12 +1662,6 @@ The pipe handle has not been set. (Did your <see cref="T:System.IO.Pipes.PipeStr
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -2260,12 +2240,6 @@ The pipe handle has not been set. (Did your <see cref="T:System.IO.Pipes.PipeStr
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2397,12 +2371,6 @@ The pipe handle has not been set. (Did your <see cref="T:System.IO.Pipes.PipeStr
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO.Pipes/PipesAclExtensions.xml b/xml/System.IO.Pipes/PipesAclExtensions.xml
index c5b98032364..23839fef45a 100644
--- a/xml/System.IO.Pipes/PipesAclExtensions.xml
+++ b/xml/System.IO.Pipes/PipesAclExtensions.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides Windows-specific static extension methods for manipulating Access Control List (ACL) security attributes for pipe streams.</summary>
diff --git a/xml/System.IO/BinaryReader.xml b/xml/System.IO/BinaryReader.xml
index e8c56a2019b..e0abcc94852 100644
--- a/xml/System.IO/BinaryReader.xml
+++ b/xml/System.IO/BinaryReader.xml
@@ -72,10 +72,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -849,12 +845,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -901,12 +891,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO/BinaryWriter.xml b/xml/System.IO/BinaryWriter.xml
index 39e51d7e970..d54891d4cd1 100644
--- a/xml/System.IO/BinaryWriter.xml
+++ b/xml/System.IO/BinaryWriter.xml
@@ -81,10 +81,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -1893,12 +1889,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1942,12 +1932,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO/BufferedStream.xml b/xml/System.IO/BufferedStream.xml
index b211adee31b..4551f233d5c 100644
--- a/xml/System.IO/BufferedStream.xml
+++ b/xml/System.IO/BufferedStream.xml
@@ -65,10 +65,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -1398,12 +1394,6 @@ Calling `DisposeAsync` allows the resources used by the <xref:System.IO.Buffered
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1560,12 +1550,6 @@ Use <xref:System.IO.BinaryReader> for reading primitive data types.
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -1942,12 +1926,6 @@ If the operation is canceled before it completes, the returned task contains the
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2091,12 +2069,6 @@ If the write operation is successful, the position within the buffered stream ad
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO/Directory.xml b/xml/System.IO/Directory.xml
index e248502f187..d937565ebee 100644
--- a/xml/System.IO/Directory.xml
+++ b/xml/System.IO/Directory.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -1914,10 +1910,6 @@ The returned collection is not cached. Each call to the <xref:System.Collections
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.IO/DirectoryInfo.xml b/xml/System.IO/DirectoryInfo.xml
index 341cb973f40..3093a0c9572 100644
--- a/xml/System.IO/DirectoryInfo.xml
+++ b/xml/System.IO/DirectoryInfo.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -3636,10 +3632,6 @@ namespace ConsoleApp
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[get: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.IO/DirectoryNotFoundException.xml b/xml/System.IO/DirectoryNotFoundException.xml
index ea24c163464..e2332c06012 100644
--- a/xml/System.IO/DirectoryNotFoundException.xml
+++ b/xml/System.IO/DirectoryNotFoundException.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -249,10 +245,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.IO/DriveInfo.xml b/xml/System.IO/DriveInfo.xml
index f30496255ef..5bab669f6a5 100644
--- a/xml/System.IO/DriveInfo.xml
+++ b/xml/System.IO/DriveInfo.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.IO/DriveNotFoundException.xml b/xml/System.IO/DriveNotFoundException.xml
index fdd1ffa6e20..ba183f4a8fd 100644
--- a/xml/System.IO/DriveNotFoundException.xml
+++ b/xml/System.IO/DriveNotFoundException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -234,10 +230,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.IO/EndOfStreamException.xml b/xml/System.IO/EndOfStreamException.xml
index 267f5f73413..a8dfaaae766 100644
--- a/xml/System.IO/EndOfStreamException.xml
+++ b/xml/System.IO/EndOfStreamException.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -266,10 +262,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.IO/ErrorEventArgs.xml b/xml/System.IO/ErrorEventArgs.xml
index 766d09d9fde..3c6ed1744dc 100644
--- a/xml/System.IO/ErrorEventArgs.xml
+++ b/xml/System.IO/ErrorEventArgs.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.IO.FileSystemWatcher.Error" /> event.</summary>
diff --git a/xml/System.IO/File.xml b/xml/System.IO/File.xml
index 19f9f83dae4..51292ca894e 100644
--- a/xml/System.IO/File.xml
+++ b/xml/System.IO/File.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -204,12 +200,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -673,12 +663,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2403,10 +2387,6 @@ An I/O error occurred.</exception>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -7025,12 +7005,6 @@ It is not possible to change the compression status of a <xref:System.IO.File> o
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -7699,12 +7673,6 @@ It is not possible to change the compression status of a <xref:System.IO.File> o
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO/FileFormatException.xml b/xml/System.IO/FileFormatException.xml
index ce999a537ac..f466d02705d 100644
--- a/xml/System.IO/FileFormatException.xml
+++ b/xml/System.IO/FileFormatException.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The exception that is thrown when an input file or a data stream that is supposed to conform to a certain file format specification is malformed.</summary>
@@ -226,10 +222,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;windowsdesktop-8.0;windowsdesktop-9.0" />
@@ -475,10 +467,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.IO/FileInfo.xml b/xml/System.IO/FileInfo.xml
index 31e8a5a339e..3526f7193ab 100644
--- a/xml/System.IO/FileInfo.xml
+++ b/xml/System.IO/FileInfo.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -860,10 +856,6 @@ C:\Users\userName\AppData\Local\Temp\tmp70CB.tmp was successfully deleted.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -941,10 +933,6 @@ C:\Users\userName\AppData\Local\Temp\tmp70CB.tmp was successfully deleted.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[get: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.IO/FileLoadException.xml b/xml/System.IO/FileLoadException.xml
index fcb5f792edb..1ea74d65f81 100644
--- a/xml/System.IO/FileLoadException.xml
+++ b/xml/System.IO/FileLoadException.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -254,10 +250,6 @@ The exact timing of when static assembly references are loaded is unspecified. T
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -617,10 +609,6 @@ The exact timing of when static assembly references are loaded is unspecified. T
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -682,10 +670,6 @@ The exact timing of when static assembly references are loaded is unspecified. T
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -744,10 +728,6 @@ The exact timing of when static assembly references are loaded is unspecified. T
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.IO/FileNotFoundException.xml b/xml/System.IO/FileNotFoundException.xml
index 14f6048bc36..0a8b44ff88c 100644
--- a/xml/System.IO/FileNotFoundException.xml
+++ b/xml/System.IO/FileNotFoundException.xml
@@ -64,10 +64,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -257,10 +253,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -635,10 +627,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -703,10 +691,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -767,10 +751,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.IO/FileStream.xml b/xml/System.IO/FileStream.xml
index 727fbc7ed45..a9745fbc3f0 100644
--- a/xml/System.IO/FileStream.xml
+++ b/xml/System.IO/FileStream.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -3420,12 +3416,6 @@ If the absolute path is not known, this property returns a string similar to "[U
       <AssemblyInfo>
         <AssemblyName>System.IO.FileSystem</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -3583,12 +3573,6 @@ Use <xref:System.IO.BinaryReader> for reading primitive data types.
       <AssemblyInfo>
         <AssemblyName>System.IO.FileSystem</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -4208,12 +4192,6 @@ The following example shows how to read from a file asynchronously.
       <AssemblyInfo>
         <AssemblyName>System.IO.FileSystem</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4374,12 +4352,6 @@ Another thread may have caused an unexpected change in the position of the opera
       <AssemblyInfo>
         <AssemblyName>System.IO.FileSystem</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO/FileSystemAclExtensions.xml b/xml/System.IO/FileSystemAclExtensions.xml
index 91852c5df40..cfe84dbb34d 100644
--- a/xml/System.IO/FileSystemAclExtensions.xml
+++ b/xml/System.IO/FileSystemAclExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.IO/FileSystemEventArgs.xml b/xml/System.IO/FileSystemEventArgs.xml
index f20cae13916..5e4b7468c46 100644
--- a/xml/System.IO/FileSystemEventArgs.xml
+++ b/xml/System.IO/FileSystemEventArgs.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the directory events: <see cref="E:System.IO.FileSystemWatcher.Changed" />, <see cref="E:System.IO.FileSystemWatcher.Created" />, <see cref="E:System.IO.FileSystemWatcher.Deleted" />.</summary>
@@ -302,10 +298,6 @@ The following example demonstrates the <xref:System.IO.FileSystemEventArgs.FullP
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.IO/FileSystemInfo.xml b/xml/System.IO/FileSystemInfo.xml
index afbb5c8a7f0..71e6f2c30d2 100644
--- a/xml/System.IO/FileSystemInfo.xml
+++ b/xml/System.IO/FileSystemInfo.xml
@@ -65,10 +65,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -1390,10 +1386,6 @@ The `Extension` property returns the <xref:System.IO.FileSystemInfo> extension,
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1609,12 +1601,6 @@ Call `Refresh` before attempting to get the attribute information, or the inform
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.FileSystemInfo</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO/FileSystemWatcher.xml b/xml/System.IO/FileSystemWatcher.xml
index 2cac8527682..e4c286af9d2 100644
--- a/xml/System.IO/FileSystemWatcher.xml
+++ b/xml/System.IO/FileSystemWatcher.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">
       <AttributeName Language="C#">[System.ComponentModel.DefaultEvent("Changed")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.DefaultEvent("Changed")&gt;]</AttributeName>
@@ -219,10 +215,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -300,12 +292,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="path" Type="System.String" />
         <Parameter Name="filter" Type="System.String" />
@@ -965,14 +951,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">
           <AttributeName Language="C#">[System.ComponentModel.DefaultValue("*.*")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.DefaultValue("*.*")&gt;]</AttributeName>
@@ -1075,10 +1053,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.ObjectModel.Collection&lt;System.String&gt;</ReturnType>
@@ -1346,12 +1320,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1416,12 +1384,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1486,12 +1448,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1554,12 +1510,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1620,12 +1570,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1694,14 +1638,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">
           <AttributeName Language="C#">[System.ComponentModel.DefaultValue("")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.DefaultValue("")&gt;]</AttributeName>
diff --git a/xml/System.IO/IOException.xml b/xml/System.IO/IOException.xml
index 6f229d7671f..ca2a0c3397b 100644
--- a/xml/System.IO/IOException.xml
+++ b/xml/System.IO/IOException.xml
@@ -70,10 +70,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -288,10 +284,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.IO/InternalBufferOverflowException.xml b/xml/System.IO/InternalBufferOverflowException.xml
index cd310d6c2c3..2789333bc97 100644
--- a/xml/System.IO/InternalBufferOverflowException.xml
+++ b/xml/System.IO/InternalBufferOverflowException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -232,10 +228,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.IO/InvalidDataException.xml b/xml/System.IO/InvalidDataException.xml
index bbcb1902f4d..ea9c92abb1f 100644
--- a/xml/System.IO/InvalidDataException.xml
+++ b/xml/System.IO/InvalidDataException.xml
@@ -74,10 +74,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.IO/MemoryStream.xml b/xml/System.IO/MemoryStream.xml
index 5218c0530bb..e715492b42d 100644
--- a/xml/System.IO/MemoryStream.xml
+++ b/xml/System.IO/MemoryStream.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -1825,12 +1821,6 @@ The pending operation does not support writing.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1981,12 +1971,6 @@ The pending operation does not support writing.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -2429,12 +2413,6 @@ The pending operation does not support writing.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2505,12 +2483,6 @@ The underlying buffer will not be exposed if the current `MemoryStream` instance
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2657,12 +2629,6 @@ The underlying buffer will not be exposed if the current `MemoryStream` instance
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO/Path.xml b/xml/System.IO/Path.xml
index 6eb64d53209..46b6c5ed6ae 100644
--- a/xml/System.IO/Path.xml
+++ b/xml/System.IO/Path.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -232,12 +228,6 @@ The following example displays <xref:System.IO.Path> field values on Windows and
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -396,12 +386,6 @@ This method is intended to concatenate individual strings into a single string t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -486,12 +470,6 @@ If any element in `paths` but the last one is not a drive and does not end with
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -573,12 +551,6 @@ If any element in `paths` but the last one is not a drive and does not end with
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -660,12 +632,6 @@ If any element in `paths` but the last one is not a drive and does not end with
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -829,12 +795,6 @@ The following example displays <xref:System.IO.Path> field values on Windows and
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -877,12 +837,6 @@ The following example displays <xref:System.IO.Path> field values on Windows and
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -927,12 +881,6 @@ The following example displays <xref:System.IO.Path> field values on Windows and
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -992,12 +940,6 @@ Unlike <xref:System.IO.File.Exists(System.String)>, this method returns `true` f
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlySpan&lt;System.Char&gt;</ReturnType>
       </ReturnValue>
@@ -1059,10 +1001,6 @@ Unlike the string overload, this method doesn't normalize directory separators.
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1139,12 +1077,6 @@ Note: In <see href="https://learn.microsoft.com/previous-versions/br230232(v=vs.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlySpan&lt;System.Char&gt;</ReturnType>
       </ReturnValue>
@@ -1203,12 +1135,6 @@ This method obtains the extension of `path` by searching `path` for a period (".
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1272,12 +1198,6 @@ This method obtains the extension of `path` by searching `path` for a period (.)
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlySpan&lt;System.Char&gt;</ReturnType>
       </ReturnValue>
@@ -1336,12 +1256,6 @@ The returned read-only span contains the characters of the path that follow the
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1411,12 +1325,6 @@ For a list of common I/O tasks, see [Common I/O Tasks](/dotnet/standard/io/commo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlySpan&lt;System.Char&gt;</ReturnType>
       </ReturnValue>
@@ -1469,12 +1377,6 @@ For a list of common I/O tasks, see [Common I/O Tasks](/dotnet/standard/io/commo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1548,10 +1450,6 @@ For a list of common I/O tasks, see [Common I/O Tasks](/dotnet/standard/io/commo
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1646,12 +1544,6 @@ For more information on file path formats on Windows, see [File path formats on
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1728,12 +1620,6 @@ The following example defines a variable, `basePath`, to represent an applicatio
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Char[]</ReturnType>
       </ReturnValue>
@@ -1796,12 +1682,6 @@ The following example defines a variable, `basePath`, to represent an applicatio
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Char[]</ReturnType>
       </ReturnValue>
@@ -1854,12 +1734,6 @@ The following example defines a variable, `basePath`, to represent an applicatio
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlySpan&lt;System.Char&gt;</ReturnType>
       </ReturnValue>
@@ -1947,10 +1821,6 @@ For more information on file paths on Windows, see [File path formats on Windows
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2062,12 +1932,6 @@ The following example demonstrates a use of the `GetPathRoot` method.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -2122,12 +1986,6 @@ Unlike <xref:System.IO.Path.GetTempFileName%2A>, <xref:System.IO.Path.GetRandomF
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -2197,10 +2055,6 @@ Paths are resolved by calling the <xref:System.IO.Path.GetFullPath%2A> method be
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2275,10 +2129,6 @@ On .NET 7 and earlier versions, when using this method on Windows, the <xref:Sys
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2367,12 +2217,6 @@ C:\Users\UserName\AppData\Local\Temp\
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2432,12 +2276,6 @@ A trailing period in `path` is not considered an extension.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2606,12 +2444,6 @@ There is a difference between a fully qualified path (as indicated by the `IsPat
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2660,12 +2492,6 @@ There is a difference between a fully qualified path (as indicated by the `IsPat
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2738,12 +2564,6 @@ Note that rooted paths can be either absolute (that is, fully qualified) or rela
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2797,12 +2617,6 @@ Note that rooted paths can be either absolute (that is, fully qualified) or rela
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2923,12 +2737,6 @@ Note that rooted paths can be either absolute (that is, fully qualified) or rela
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -2999,12 +2807,6 @@ Not all invalid characters for directory and file names are interpreted as unacc
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -3074,12 +2876,6 @@ The following example illustrates the difference in the paths returned by the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -3141,12 +2937,6 @@ Not all invalid characters for directory and file names are interpreted as unacc
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -3217,12 +3007,6 @@ The following example illustrates the difference in the paths returned by the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -3285,12 +3069,6 @@ Not all invalid characters for directory and file names are interpreted as unacc
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -3355,12 +3133,6 @@ Not all invalid characters for directory and file names are interpreted as unacc
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -3488,12 +3260,6 @@ Not all invalid characters for directory and file names are interpreted as unacc
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlySpan&lt;System.Char&gt;</ReturnType>
       </ReturnValue>
@@ -3534,12 +3300,6 @@ Not all invalid characters for directory and file names are interpreted as unacc
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -3597,12 +3357,6 @@ The destination character span must be large enough to hold the concatenated pat
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3660,12 +3414,6 @@ The destination character span must be large enough to hold the concatenated pat
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO/PathTooLongException.xml b/xml/System.IO/PathTooLongException.xml
index f68360b3320..de7b885807f 100644
--- a/xml/System.IO/PathTooLongException.xml
+++ b/xml/System.IO/PathTooLongException.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -258,10 +254,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.IO/RandomAccess.xml b/xml/System.IO/RandomAccess.xml
index fcf0be206b5..bc6f58d069a 100644
--- a/xml/System.IO/RandomAccess.xml
+++ b/xml/System.IO/RandomAccess.xml
@@ -38,12 +38,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -82,12 +76,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
@@ -122,12 +110,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
@@ -372,12 +354,6 @@ Position of the file is not advanced.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -415,12 +391,6 @@ Position of the file is not advanced.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -536,12 +506,6 @@ Position of the file is not advanced.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO/RenamedEventArgs.xml b/xml/System.IO/RenamedEventArgs.xml
index cba565585bd..faeedcc51d7 100644
--- a/xml/System.IO/RenamedEventArgs.xml
+++ b/xml/System.IO/RenamedEventArgs.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.IO.FileSystemWatcher.Renamed" /> event.</summary>
@@ -172,10 +168,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.IO/Stream.xml b/xml/System.IO/Stream.xml
index 6759890ec01..9a432fda1c7 100644
--- a/xml/System.IO/Stream.xml
+++ b/xml/System.IO/Stream.xml
@@ -79,10 +79,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -2012,12 +2008,6 @@
       <AssemblyInfo>
         <AssemblyName>System.IO</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2166,12 +2156,6 @@
       <AssemblyInfo>
         <AssemblyName>System.IO</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -2391,12 +2375,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2451,12 +2429,6 @@ When `minimumBytes` is 0 (zero), this read operation will be completed without w
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -2585,12 +2557,6 @@ When `minimumBytes` is 0 (zero), this read operation will be completed without w
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2695,12 +2661,6 @@ The range specified by the combination of <paramref name="offset" /> and <paramr
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
@@ -3197,12 +3157,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>System.IO</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3336,12 +3290,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>System.IO</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO/StreamReader.xml b/xml/System.IO/StreamReader.xml
index 78d06a10451..33fb2c12633 100644
--- a/xml/System.IO/StreamReader.xml
+++ b/xml/System.IO/StreamReader.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -1874,12 +1870,6 @@ Following a call to <xref:System.IO.StreamReader.Close%2A>, any operations on th
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2023,12 +2013,6 @@ Following a call to <xref:System.IO.StreamReader.Close%2A>, any operations on th
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -2159,12 +2143,6 @@ Following a call to <xref:System.IO.StreamReader.Close%2A>, any operations on th
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2284,12 +2262,6 @@ Following a call to <xref:System.IO.StreamReader.Close%2A>, any operations on th
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -2425,10 +2397,6 @@ Following a call to <xref:System.IO.StreamReader.Close%2A>, any operations on th
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.IO/StreamWriter.xml b/xml/System.IO/StreamWriter.xml
index 6e5e92b77d7..4d32dfbb5c0 100644
--- a/xml/System.IO/StreamWriter.xml
+++ b/xml/System.IO/StreamWriter.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -1752,10 +1748,6 @@ For a list of common I/O tasks, see [Common I/O Tasks](/dotnet/standard/io/commo
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1825,12 +1817,6 @@ For a list of common I/O tasks, see [Common I/O Tasks](/dotnet/standard/io/commo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1885,10 +1871,6 @@ For a list of common I/O tasks, see [Common I/O Tasks](/dotnet/standard/io/commo
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2248,12 +2230,6 @@ See <xref:System.IO.TextWriter.Write(System.String,System.Object[])> for a descr
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2319,12 +2295,6 @@ See <xref:System.IO.TextWriter.Write(System.String,System.Object,System.Object)>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2557,12 +2527,6 @@ This method stores in the task it returns all non-usage exceptions that the meth
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -2692,12 +2656,6 @@ This method stores in the task it returns all non-usage exceptions that the meth
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2754,12 +2712,6 @@ For a list of common I/O tasks, see [Common I/O Tasks](/dotnet/standard/io/commo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3012,12 +2964,6 @@ See <xref:System.IO.TextWriter.WriteLine(System.String,System.Object[])> for a d
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3083,12 +3029,6 @@ See <xref:System.IO.TextWriter.WriteLine(System.String,System.Object,System.Obje
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3386,12 +3326,6 @@ See <xref:System.IO.TextWriter.WriteLine(System.String,System.Object,System.Obje
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO/StringReader.xml b/xml/System.IO/StringReader.xml
index fd00053b53c..b91e18e1d29 100644
--- a/xml/System.IO/StringReader.xml
+++ b/xml/System.IO/StringReader.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -553,12 +549,6 @@ This implementation of `Close` calls the <xref:System.IO.StringReader.Dispose%2A
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -694,12 +684,6 @@ This implementation of `Close` calls the <xref:System.IO.StringReader.Dispose%2A
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -830,12 +814,6 @@ This implementation of `Close` calls the <xref:System.IO.StringReader.Dispose%2A
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -888,12 +866,6 @@ This implementation of `Close` calls the <xref:System.IO.StringReader.Dispose%2A
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -1035,10 +1007,6 @@ This implementation of `Close` calls the <xref:System.IO.StringReader.Dispose%2A
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.IO/StringWriter.xml b/xml/System.IO/StringWriter.xml
index 216a2def2ea..ddc277196e1 100644
--- a/xml/System.IO/StringWriter.xml
+++ b/xml/System.IO/StringWriter.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -263,10 +259,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -1069,12 +1061,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1129,10 +1115,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -1217,12 +1199,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1528,12 +1504,6 @@ This method stores in the task it returns all non-usage exceptions that the meth
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -1715,12 +1685,6 @@ This method stores in the task it returns all non-usage exceptions that the meth
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1763,12 +1727,6 @@ This method stores in the task it returns all non-usage exceptions that the meth
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1977,12 +1935,6 @@ The following example shows how to write a string by using the <xref:System.IO.S
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO/TextReader.xml b/xml/System.IO/TextReader.xml
index b77e58ee307..dc2ef99df6d 100644
--- a/xml/System.IO/TextReader.xml
+++ b/xml/System.IO/TextReader.xml
@@ -79,10 +79,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -629,12 +625,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -760,12 +750,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -897,12 +881,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1028,12 +1006,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -1173,12 +1145,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO/TextWriter.xml b/xml/System.IO/TextWriter.xml
index 02242904223..8461c04fb0f 100644
--- a/xml/System.IO/TextWriter.xml
+++ b/xml/System.IO/TextWriter.xml
@@ -87,10 +87,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -250,12 +246,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="formatProvider" Type="System.IFormatProvider" />
       </Parameters>
@@ -1372,12 +1362,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1721,12 +1705,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1789,12 +1767,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1927,12 +1899,6 @@ For a list of common I/O tasks, see [Common I/O Tasks](/dotnet/standard/io/commo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1995,12 +1961,6 @@ For a list of common I/O tasks, see [Common I/O Tasks](/dotnet/standard/io/commo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2600,12 +2560,6 @@ This method is equivalent to `Write(stringBuilder.ToString())`, but it uses the
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2728,12 +2682,6 @@ This method is equivalent to `Write(stringBuilder.ToString())`, but it uses the
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3076,12 +3024,6 @@ This method is equivalent to `Write(stringBuilder.ToString())`, but it uses the
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -3499,12 +3441,6 @@ For a list of common I/O tasks, see [Common I/O Tasks](/dotnet/standard/io/commo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3858,12 +3794,6 @@ For a list of common I/O tasks, see [Common I/O Tasks](/dotnet/standard/io/commo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3927,12 +3857,6 @@ For a list of common I/O tasks, see [Common I/O Tasks](/dotnet/standard/io/commo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4069,10 +3993,6 @@ For a list of common I/O tasks, see [Common I/O Tasks](/dotnet/standard/io/commo
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -4141,12 +4061,6 @@ For a list of common I/O tasks, see [Common I/O Tasks](/dotnet/standard/io/commo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4759,12 +4673,6 @@ For a list of common I/O tasks, see [Common I/O Tasks](/dotnet/standard/io/commo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4889,12 +4797,6 @@ For a list of common I/O tasks, see [Common I/O Tasks](/dotnet/standard/io/commo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5328,12 +5230,6 @@ This method stores in the task it returns all non-usage exceptions that the meth
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
diff --git a/xml/System.IO/UnmanagedMemoryAccessor.xml b/xml/System.IO/UnmanagedMemoryAccessor.xml
index 6ad18cc26ac..98ce4e48b39 100644
--- a/xml/System.IO/UnmanagedMemoryAccessor.xml
+++ b/xml/System.IO/UnmanagedMemoryAccessor.xml
@@ -151,10 +151,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -216,10 +212,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -535,10 +527,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.IO/UnmanagedMemoryStream.xml b/xml/System.IO/UnmanagedMemoryStream.xml
index f9033d6dc57..1c9567e0742 100644
--- a/xml/System.IO/UnmanagedMemoryStream.xml
+++ b/xml/System.IO/UnmanagedMemoryStream.xml
@@ -260,10 +260,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -411,10 +407,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -852,10 +844,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -1015,10 +1003,6 @@ This method is equivalent to the <xref:System.IO.UnmanagedMemoryStream.%23ctor%2
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1340,10 +1324,6 @@ This method is equivalent to the <xref:System.IO.UnmanagedMemoryStream.%23ctor%2
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1479,10 +1459,6 @@ This method is equivalent to the <xref:System.IO.UnmanagedMemoryStream.%23ctor%2
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -1822,10 +1798,6 @@ This method is equivalent to the <xref:System.IO.UnmanagedMemoryStream.%23ctor%2
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1971,10 +1943,6 @@ If an exception occurs during the write operation, it will be set as the <xref:S
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.IO/WaitForChangedResult.xml b/xml/System.IO/WaitForChangedResult.xml
index 7db492fb76d..f9bcb809420 100644
--- a/xml/System.IO/WaitForChangedResult.xml
+++ b/xml/System.IO/WaitForChangedResult.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains information on the change that occurred.</summary>
diff --git a/xml/System.Linq.Expressions/BinaryExpression.xml b/xml/System.Linq.Expressions/BinaryExpression.xml
index f36b159d0a0..d0aafbf15e6 100644
--- a/xml/System.Linq.Expressions/BinaryExpression.xml
+++ b/xml/System.Linq.Expressions/BinaryExpression.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+BinaryExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+BinaryExpressionProxy))&gt;]</AttributeName>
@@ -206,10 +202,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -418,10 +410,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/BlockExpression.xml b/xml/System.Linq.Expressions/BlockExpression.xml
index 8460a935d31..e2c329f0005 100644
--- a/xml/System.Linq.Expressions/BlockExpression.xml
+++ b/xml/System.Linq.Expressions/BlockExpression.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+BlockExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+BlockExpressionProxy))&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/CatchBlock.xml b/xml/System.Linq.Expressions/CatchBlock.xml
index e0810bae3e5..56aa16d2bdd 100644
--- a/xml/System.Linq.Expressions/CatchBlock.xml
+++ b/xml/System.Linq.Expressions/CatchBlock.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+CatchBlockProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+CatchBlockProxy))&gt;]</AttributeName>
@@ -152,10 +148,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -361,10 +353,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/ConditionalExpression.xml b/xml/System.Linq.Expressions/ConditionalExpression.xml
index fec82be0635..7ce713ec065 100644
--- a/xml/System.Linq.Expressions/ConditionalExpression.xml
+++ b/xml/System.Linq.Expressions/ConditionalExpression.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+ConditionalExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+ConditionalExpressionProxy))&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/ConstantExpression.xml b/xml/System.Linq.Expressions/ConstantExpression.xml
index b75fd3e0827..c5dc39d1503 100644
--- a/xml/System.Linq.Expressions/ConstantExpression.xml
+++ b/xml/System.Linq.Expressions/ConstantExpression.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+ConstantExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+ConstantExpressionProxy))&gt;]</AttributeName>
@@ -255,10 +251,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/DebugInfoExpression.xml b/xml/System.Linq.Expressions/DebugInfoExpression.xml
index d89befad52d..b4111a7a54d 100644
--- a/xml/System.Linq.Expressions/DebugInfoExpression.xml
+++ b/xml/System.Linq.Expressions/DebugInfoExpression.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+DebugInfoExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+DebugInfoExpressionProxy))&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/DefaultExpression.xml b/xml/System.Linq.Expressions/DefaultExpression.xml
index 5c987ffa3d8..3b161120bf8 100644
--- a/xml/System.Linq.Expressions/DefaultExpression.xml
+++ b/xml/System.Linq.Expressions/DefaultExpression.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+DefaultExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+DefaultExpressionProxy))&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/DynamicExpression.xml b/xml/System.Linq.Expressions/DynamicExpression.xml
index 9aa5e25bd69..90aa1cf1a12 100644
--- a/xml/System.Linq.Expressions/DynamicExpression.xml
+++ b/xml/System.Linq.Expressions/DynamicExpression.xml
@@ -68,10 +68,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+DynamicExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+DynamicExpressionProxy))&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/DynamicExpressionVisitor.xml b/xml/System.Linq.Expressions/DynamicExpressionVisitor.xml
index 4829e2d7481..a7a4d01fe51 100644
--- a/xml/System.Linq.Expressions/DynamicExpressionVisitor.xml
+++ b/xml/System.Linq.Expressions/DynamicExpressionVisitor.xml
@@ -138,12 +138,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Linq.Expressions.Expression</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Linq.Expressions/ElementInit.xml b/xml/System.Linq.Expressions/ElementInit.xml
index e3544bb7628..d1b9ca7f582 100644
--- a/xml/System.Linq.Expressions/ElementInit.xml
+++ b/xml/System.Linq.Expressions/ElementInit.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an initializer for a single element of an <see cref="T:System.Collections.IEnumerable" /> collection.</summary>
diff --git a/xml/System.Linq.Expressions/Expression.xml b/xml/System.Linq.Expressions/Expression.xml
index 2371aac8c5d..d7439f27524 100644
--- a/xml/System.Linq.Expressions/Expression.xml
+++ b/xml/System.Linq.Expressions/Expression.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the base class from which the classes that represent expression tree nodes are derived. It also contains <see langword="static" /> (<see langword="Shared" /> in Visual Basic) factory methods to create the various node types. This is an <see langword="abstract" /> class.</summary>
@@ -13837,12 +13833,6 @@ As with `Func`, the last argument is the return type. It can be set to `System.V
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Linq.Expressions.TryExpression</ReturnType>
       </ReturnValue>
@@ -22004,12 +21994,6 @@ As with `Func`, the last argument is the return type. It can be set to `System.V
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Linq.Expressions.SwitchExpression</ReturnType>
       </ReturnValue>
@@ -22078,12 +22062,6 @@ As with `Func`, the last argument is the return type. It can be set to `System.V
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Linq.Expressions.SwitchExpression</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Linq.Expressions/ExpressionVisitor.xml b/xml/System.Linq.Expressions/ExpressionVisitor.xml
index 85035e62635..83866e6676d 100644
--- a/xml/System.Linq.Expressions/ExpressionVisitor.xml
+++ b/xml/System.Linq.Expressions/ExpressionVisitor.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a visitor or rewriter for expression trees.</summary>
@@ -196,12 +192,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Linq.Expressions.Expression</ReturnType>
       </ReturnValue>
@@ -388,12 +378,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -1093,12 +1077,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Linq.Expressions.LabelTarget</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Linq.Expressions/Expression`1.xml b/xml/System.Linq.Expressions/Expression`1.xml
index 2858129300f..0587de29f63 100644
--- a/xml/System.Linq.Expressions/Expression`1.xml
+++ b/xml/System.Linq.Expressions/Expression`1.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TDelegate">The type of the delegate that the <see cref="T:System.Linq.Expressions.Expression`1" /> represents.</typeparam>
diff --git a/xml/System.Linq.Expressions/GotoExpression.xml b/xml/System.Linq.Expressions/GotoExpression.xml
index e6831190ba2..00c2a914b86 100644
--- a/xml/System.Linq.Expressions/GotoExpression.xml
+++ b/xml/System.Linq.Expressions/GotoExpression.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+GotoExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+GotoExpressionProxy))&gt;]</AttributeName>
@@ -390,10 +386,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/IArgumentProvider.xml b/xml/System.Linq.Expressions/IArgumentProvider.xml
index 3e3ecfef9ac..db4635c5d7f 100644
--- a/xml/System.Linq.Expressions/IArgumentProvider.xml
+++ b/xml/System.Linq.Expressions/IArgumentProvider.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Linq.Expressions" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an internal interface for accessing the arguments of multiple tree nodes (DynamicExpression, ElementInit, MethodCallExpression, InvocationExpression, NewExpression, and IndexExpression).  This API is for internal use only.</summary>
     <remarks>
diff --git a/xml/System.Linq.Expressions/IDynamicExpression.xml b/xml/System.Linq.Expressions/IDynamicExpression.xml
index 433f2d41473..cbd72f9dec1 100644
--- a/xml/System.Linq.Expressions/IDynamicExpression.xml
+++ b/xml/System.Linq.Expressions/IDynamicExpression.xml
@@ -41,12 +41,6 @@
       <InterfaceName>System.Linq.Expressions.IArgumentProvider</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an internal interface for accessing the arguments of DynamicExpression tree nodes as well as CallSite and Rewriting functionality.  You should not use this API.  It is only public due to DLL refactoring and exists only for internal performance optimizations.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Linq.Expressions/IndexExpression.xml b/xml/System.Linq.Expressions/IndexExpression.xml
index 0b1b4624e74..54876fc2b2d 100644
--- a/xml/System.Linq.Expressions/IndexExpression.xml
+++ b/xml/System.Linq.Expressions/IndexExpression.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+IndexExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+IndexExpressionProxy))&gt;]</AttributeName>
@@ -203,10 +199,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -300,10 +292,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/InvocationExpression.xml b/xml/System.Linq.Expressions/InvocationExpression.xml
index 479f03564e7..3b0ae6c2eab 100644
--- a/xml/System.Linq.Expressions/InvocationExpression.xml
+++ b/xml/System.Linq.Expressions/InvocationExpression.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+InvocationExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+InvocationExpressionProxy))&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/LabelExpression.xml b/xml/System.Linq.Expressions/LabelExpression.xml
index e1ea01b4ed6..1de4a226a51 100644
--- a/xml/System.Linq.Expressions/LabelExpression.xml
+++ b/xml/System.Linq.Expressions/LabelExpression.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+LabelExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+LabelExpressionProxy))&gt;]</AttributeName>
@@ -143,10 +139,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/LabelTarget.xml b/xml/System.Linq.Expressions/LabelTarget.xml
index 3abebdd1aa4..7acaf033515 100644
--- a/xml/System.Linq.Expressions/LabelTarget.xml
+++ b/xml/System.Linq.Expressions/LabelTarget.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Used to represent the target of a <see cref="T:System.Linq.Expressions.GotoExpression" />.</summary>
@@ -104,10 +100,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/LambdaExpression.xml b/xml/System.Linq.Expressions/LambdaExpression.xml
index be25025afc2..5290f5c9e15 100644
--- a/xml/System.Linq.Expressions/LambdaExpression.xml
+++ b/xml/System.Linq.Expressions/LambdaExpression.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+LambdaExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+LambdaExpressionProxy))&gt;]</AttributeName>
@@ -402,10 +398,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/ListInitExpression.xml b/xml/System.Linq.Expressions/ListInitExpression.xml
index d99861451e8..46bd7706a1f 100644
--- a/xml/System.Linq.Expressions/ListInitExpression.xml
+++ b/xml/System.Linq.Expressions/ListInitExpression.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+ListInitExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+ListInitExpressionProxy))&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/LoopExpression.xml b/xml/System.Linq.Expressions/LoopExpression.xml
index ccb30644440..acd9cc39758 100644
--- a/xml/System.Linq.Expressions/LoopExpression.xml
+++ b/xml/System.Linq.Expressions/LoopExpression.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+LoopExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+LoopExpressionProxy))&gt;]</AttributeName>
@@ -200,10 +196,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -256,10 +248,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/MemberAssignment.xml b/xml/System.Linq.Expressions/MemberAssignment.xml
index 36b4568589e..6c73db71c69 100644
--- a/xml/System.Linq.Expressions/MemberAssignment.xml
+++ b/xml/System.Linq.Expressions/MemberAssignment.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents assignment operation for a field or property of an object.</summary>
diff --git a/xml/System.Linq.Expressions/MemberBinding.xml b/xml/System.Linq.Expressions/MemberBinding.xml
index 6f4b5729a97..b47f267b6e7 100644
--- a/xml/System.Linq.Expressions/MemberBinding.xml
+++ b/xml/System.Linq.Expressions/MemberBinding.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the base class from which the classes that represent bindings that are used to initialize members of a newly created object derive.</summary>
diff --git a/xml/System.Linq.Expressions/MemberExpression.xml b/xml/System.Linq.Expressions/MemberExpression.xml
index aa492af819f..fbfd56b8d66 100644
--- a/xml/System.Linq.Expressions/MemberExpression.xml
+++ b/xml/System.Linq.Expressions/MemberExpression.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+MemberExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+MemberExpressionProxy))&gt;]</AttributeName>
@@ -173,10 +169,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/MemberInitExpression.xml b/xml/System.Linq.Expressions/MemberInitExpression.xml
index 8efdd8d163d..8ff45c62a50 100644
--- a/xml/System.Linq.Expressions/MemberInitExpression.xml
+++ b/xml/System.Linq.Expressions/MemberInitExpression.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+MemberInitExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+MemberInitExpressionProxy))&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/MemberListBinding.xml b/xml/System.Linq.Expressions/MemberListBinding.xml
index 4219355b682..dfd50dfd14c 100644
--- a/xml/System.Linq.Expressions/MemberListBinding.xml
+++ b/xml/System.Linq.Expressions/MemberListBinding.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents initializing the elements of a collection member of a newly created object.</summary>
diff --git a/xml/System.Linq.Expressions/MemberMemberBinding.xml b/xml/System.Linq.Expressions/MemberMemberBinding.xml
index 85561ac52dc..2eaa20fe1ea 100644
--- a/xml/System.Linq.Expressions/MemberMemberBinding.xml
+++ b/xml/System.Linq.Expressions/MemberMemberBinding.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents initializing members of a member of a newly created object.</summary>
diff --git a/xml/System.Linq.Expressions/MethodCallExpression.xml b/xml/System.Linq.Expressions/MethodCallExpression.xml
index b66dba9320d..a359af86cf7 100644
--- a/xml/System.Linq.Expressions/MethodCallExpression.xml
+++ b/xml/System.Linq.Expressions/MethodCallExpression.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+MethodCallExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+MethodCallExpressionProxy))&gt;]</AttributeName>
@@ -319,10 +315,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/NewArrayExpression.xml b/xml/System.Linq.Expressions/NewArrayExpression.xml
index 522b1c8aa11..158c7f91a6c 100644
--- a/xml/System.Linq.Expressions/NewArrayExpression.xml
+++ b/xml/System.Linq.Expressions/NewArrayExpression.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+NewArrayExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+NewArrayExpressionProxy))&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/NewExpression.xml b/xml/System.Linq.Expressions/NewExpression.xml
index 7fc25d711f9..3064df1f9aa 100644
--- a/xml/System.Linq.Expressions/NewExpression.xml
+++ b/xml/System.Linq.Expressions/NewExpression.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+NewExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+NewExpressionProxy))&gt;]</AttributeName>
@@ -231,10 +227,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/ParameterExpression.xml b/xml/System.Linq.Expressions/ParameterExpression.xml
index c304f30343d..47a325e84ba 100644
--- a/xml/System.Linq.Expressions/ParameterExpression.xml
+++ b/xml/System.Linq.Expressions/ParameterExpression.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+ParameterExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+ParameterExpressionProxy))&gt;]</AttributeName>
@@ -221,10 +217,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/RuntimeVariablesExpression.xml b/xml/System.Linq.Expressions/RuntimeVariablesExpression.xml
index 3a23f2100dc..bd563f1ab89 100644
--- a/xml/System.Linq.Expressions/RuntimeVariablesExpression.xml
+++ b/xml/System.Linq.Expressions/RuntimeVariablesExpression.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+RuntimeVariablesExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+RuntimeVariablesExpressionProxy))&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/SwitchCase.xml b/xml/System.Linq.Expressions/SwitchCase.xml
index 979ffe503bc..626094f5242 100644
--- a/xml/System.Linq.Expressions/SwitchCase.xml
+++ b/xml/System.Linq.Expressions/SwitchCase.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+SwitchCaseProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+SwitchCaseProxy))&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/SwitchExpression.xml b/xml/System.Linq.Expressions/SwitchExpression.xml
index 4a4a87e2c04..a2f61c713c6 100644
--- a/xml/System.Linq.Expressions/SwitchExpression.xml
+++ b/xml/System.Linq.Expressions/SwitchExpression.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+SwitchExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+SwitchExpressionProxy))&gt;]</AttributeName>
@@ -200,10 +196,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -256,10 +248,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/SymbolDocumentInfo.xml b/xml/System.Linq.Expressions/SymbolDocumentInfo.xml
index c4f0c56cf0f..52009860261 100644
--- a/xml/System.Linq.Expressions/SymbolDocumentInfo.xml
+++ b/xml/System.Linq.Expressions/SymbolDocumentInfo.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Stores information necessary to emit debugging symbol information for a source file, in particular the file name and unique language identifier.</summary>
diff --git a/xml/System.Linq.Expressions/TryExpression.xml b/xml/System.Linq.Expressions/TryExpression.xml
index 6d57c1a59ba..c36fcb61e64 100644
--- a/xml/System.Linq.Expressions/TryExpression.xml
+++ b/xml/System.Linq.Expressions/TryExpression.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+TryExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+TryExpressionProxy))&gt;]</AttributeName>
@@ -215,10 +211,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -271,10 +263,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/TypeBinaryExpression.xml b/xml/System.Linq.Expressions/TypeBinaryExpression.xml
index dea846aac73..b0485ed9826 100644
--- a/xml/System.Linq.Expressions/TypeBinaryExpression.xml
+++ b/xml/System.Linq.Expressions/TypeBinaryExpression.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+TypeBinaryExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+TypeBinaryExpressionProxy))&gt;]</AttributeName>
diff --git a/xml/System.Linq.Expressions/UnaryExpression.xml b/xml/System.Linq.Expressions/UnaryExpression.xml
index 39603798bf3..a415a706cd9 100644
--- a/xml/System.Linq.Expressions/UnaryExpression.xml
+++ b/xml/System.Linq.Expressions/UnaryExpression.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+UnaryExpressionProxy))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerTypeProxy(typeof(System.Linq.Expressions.Expression+UnaryExpressionProxy))&gt;]</AttributeName>
@@ -316,10 +312,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Linq/Enumerable.xml b/xml/System.Linq/Enumerable.xml
index 8740ee6b85f..738d56c0390 100644
--- a/xml/System.Linq/Enumerable.xml
+++ b/xml/System.Linq/Enumerable.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of <see langword="static" /> (<see langword="Shared" /> in Visual Basic) methods for querying objects that implement <see cref="T:System.Collections.Generic.IEnumerable`1" />.</summary>
@@ -3582,12 +3578,6 @@ This method throws an exception if `index` is out of range. To instead return a
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
       </ReturnValue>
@@ -3660,12 +3650,6 @@ The default value for reference and nullable types is `null`.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
       </ReturnValue>
@@ -4312,12 +4296,6 @@ Only unique elements are returned.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
       </ReturnValue>
@@ -6504,12 +6482,6 @@ If `comparer` is `null`, the default equality comparer, <xref:System.Collections
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
       </ReturnValue>
@@ -7543,12 +7515,6 @@ If `comparer` is `null`, the default equality comparer, <xref:System.Collections
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
       </ReturnValue>
@@ -7615,12 +7581,6 @@ If `comparer` is `null`, the default equality comparer, <xref:System.Collections
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
       </ReturnValue>
@@ -8516,12 +8476,6 @@ The following code example demonstrates how to use <xref:System.Linq.Enumerable.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TResult</ReturnType>
       </ReturnValue>
@@ -8601,12 +8555,6 @@ The following code example demonstrates how to use <xref:System.Linq.Enumerable.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
       </ReturnValue>
@@ -8671,12 +8619,6 @@ The following code example demonstrates how to use <xref:System.Linq.Enumerable.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
       </ReturnValue>
@@ -9387,12 +9329,6 @@ In Visual Basic query expression syntax, an `Aggregate Into Min()` clause transl
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
       </ReturnValue>
@@ -9461,12 +9397,6 @@ The following code example demonstrates how to use <xref:System.Linq.Enumerable.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
       </ReturnValue>
@@ -10376,12 +10306,6 @@ The following code example demonstrates how to use <xref:System.Linq.Enumerable.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TResult</ReturnType>
       </ReturnValue>
@@ -10461,12 +10385,6 @@ The following code example demonstrates how to use <xref:System.Linq.Enumerable.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
       </ReturnValue>
@@ -10531,12 +10449,6 @@ The following code example demonstrates how to use <xref:System.Linq.Enumerable.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
       </ReturnValue>
@@ -12614,12 +12526,6 @@ If comparer is `null`, the default comparer <see cref="P:System.Collections.Gene
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Linq/EnumerableExecutor`1.xml b/xml/System.Linq/EnumerableExecutor`1.xml
index 6a349a81a0f..102a6e4f871 100644
--- a/xml/System.Linq/EnumerableExecutor`1.xml
+++ b/xml/System.Linq/EnumerableExecutor`1.xml
@@ -85,10 +85,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Linq/EnumerableQuery`1.xml b/xml/System.Linq/EnumerableQuery`1.xml
index 7393f9cb406..f2224dd2851 100644
--- a/xml/System.Linq/EnumerableQuery`1.xml
+++ b/xml/System.Linq/EnumerableQuery`1.xml
@@ -138,10 +138,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Enumerating in-memory collections as IQueryable can require unreferenced code because expressions referencing IQueryable extension methods can get rebound to IEnumerable extension methods. The IEnumerable extension methods could be trimmed causing the application to fail at runtime.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Enumerating in-memory collections as IQueryable can require unreferenced code because expressions referencing IQueryable extension methods can get rebound to IEnumerable extension methods. The IEnumerable extension methods could be trimmed causing the application to fail at runtime.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="enumerable" Type="System.Collections.Generic.IEnumerable&lt;T&gt;" />
@@ -187,10 +183,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Enumerating in-memory collections as IQueryable can require unreferenced code because expressions referencing IQueryable extension methods can get rebound to IEnumerable extension methods. The IEnumerable extension methods could be trimmed causing the application to fail at runtime.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Enumerating in-memory collections as IQueryable can require unreferenced code because expressions referencing IQueryable extension methods can get rebound to IEnumerable extension methods. The IEnumerable extension methods could be trimmed causing the application to fail at runtime.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -705,12 +697,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Linq/IGrouping`2.xml b/xml/System.Linq/IGrouping`2.xml
index 27084611814..4f5ac8faae1 100644
--- a/xml/System.Linq/IGrouping`2.xml
+++ b/xml/System.Linq/IGrouping`2.xml
@@ -73,12 +73,6 @@
       <InterfaceName>System.Collections.IEnumerable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TKey">The type of the key of the <see cref="T:System.Linq.IGrouping`2" />.</typeparam>
     <typeparam name="TElement">The type of the values in the <see cref="T:System.Linq.IGrouping`2" />.</typeparam>
diff --git a/xml/System.Linq/ILookup`2.xml b/xml/System.Linq/ILookup`2.xml
index ba0a21be8af..303835066da 100644
--- a/xml/System.Linq/ILookup`2.xml
+++ b/xml/System.Linq/ILookup`2.xml
@@ -64,12 +64,6 @@
       <InterfaceName>System.Collections.IEnumerable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TKey">The type of the keys in the <see cref="T:System.Linq.ILookup`2" />.</typeparam>
     <typeparam name="TElement">The type of the elements in the <see cref="T:System.Collections.Generic.IEnumerable`1" /> sequences that make up the values in the <see cref="T:System.Linq.ILookup`2" />.</typeparam>
diff --git a/xml/System.Linq/IOrderedEnumerable`1.xml b/xml/System.Linq/IOrderedEnumerable`1.xml
index 567fef4c5be..52557c220a1 100644
--- a/xml/System.Linq/IOrderedEnumerable`1.xml
+++ b/xml/System.Linq/IOrderedEnumerable`1.xml
@@ -118,12 +118,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Linq.IOrderedEnumerable&lt;TElement&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Linq/IQueryProvider.xml b/xml/System.Linq/IQueryProvider.xml
index 7efc79bc5a6..a29ddf4de53 100644
--- a/xml/System.Linq/IQueryProvider.xml
+++ b/xml/System.Linq/IQueryProvider.xml
@@ -40,12 +40,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Linq.Expressions" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Defines methods to create and execute queries that are described by an <see cref="T:System.Linq.IQueryable" /> object.</summary>
     <remarks>
diff --git a/xml/System.Linq/IQueryable.xml b/xml/System.Linq/IQueryable.xml
index 49dda3d4c52..9187c5dcea4 100644
--- a/xml/System.Linq/IQueryable.xml
+++ b/xml/System.Linq/IQueryable.xml
@@ -44,12 +44,6 @@
       <InterfaceName>System.Collections.IEnumerable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides functionality to evaluate queries against a specific data source wherein the type of the data is not specified.</summary>
     <remarks>
diff --git a/xml/System.Linq/ImmutableArrayExtensions.xml b/xml/System.Linq/ImmutableArrayExtensions.xml
index 7554b62876b..26949897e67 100644
--- a/xml/System.Linq/ImmutableArrayExtensions.xml
+++ b/xml/System.Linq/ImmutableArrayExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>LINQ extension method overrides that offer greater efficiency for <see cref="T:System.Collections.Immutable.ImmutableArray`1" /> than the standard LINQ methods  
@@ -63,12 +59,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -340,12 +330,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -548,12 +532,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -756,12 +734,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -808,12 +780,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -860,12 +826,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -1075,12 +1035,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -1127,12 +1081,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -1179,12 +1127,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -1452,12 +1394,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1718,12 +1654,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -1772,12 +1702,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Linq/Lookup`2.xml b/xml/System.Linq/Lookup`2.xml
index a5502349bce..3146ebbfe2e 100644
--- a/xml/System.Linq/Lookup`2.xml
+++ b/xml/System.Linq/Lookup`2.xml
@@ -75,10 +75,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TKey">The type of the keys in the <see cref="T:System.Linq.Lookup`2" />.</typeparam>
diff --git a/xml/System.Linq/OrderedParallelQuery`1.xml b/xml/System.Linq/OrderedParallelQuery`1.xml
index 07929f2680b..8be7993dd7b 100644
--- a/xml/System.Linq/OrderedParallelQuery`1.xml
+++ b/xml/System.Linq/OrderedParallelQuery`1.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TSource">The type of elements in the source collection.</typeparam>
diff --git a/xml/System.Linq/ParallelEnumerable.xml b/xml/System.Linq/ParallelEnumerable.xml
index 5739e3abf78..b0e2a14ed4e 100644
--- a/xml/System.Linq/ParallelEnumerable.xml
+++ b/xml/System.Linq/ParallelEnumerable.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of methods for querying objects that implement ParallelQuery{TSource}. This is the parallel equivalent of <see cref="T:System.Linq.Enumerable" />.</summary>
@@ -3148,12 +3144,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
       </ReturnValue>
@@ -3718,12 +3708,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
       </ReturnValue>
@@ -5933,12 +5917,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
       </ReturnValue>
@@ -6703,12 +6681,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
       </ReturnValue>
@@ -7390,12 +7362,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TResult</ReturnType>
       </ReturnValue>
@@ -7968,12 +7934,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
       </ReturnValue>
@@ -8655,12 +8615,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TResult</ReturnType>
       </ReturnValue>
@@ -10190,12 +10144,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Linq/ParallelQuery`1.xml b/xml/System.Linq/ParallelQuery`1.xml
index 685c4d4aafc..dc4725a1476 100644
--- a/xml/System.Linq/ParallelQuery`1.xml
+++ b/xml/System.Linq/ParallelQuery`1.xml
@@ -95,12 +95,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IEnumerator&lt;TSource&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Linq/Queryable.xml b/xml/System.Linq/Queryable.xml
index db212ff3c93..f05c0832fc4 100644
--- a/xml/System.Linq/Queryable.xml
+++ b/xml/System.Linq/Queryable.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of <see langword="static" /> (<see langword="Shared" /> in Visual Basic) methods for querying data structures that implement <see cref="T:System.Linq.IQueryable`1" />.</summary>
@@ -3793,10 +3789,6 @@ The last chunk will contain the remaining elements and may be of a smaller size.
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
@@ -3863,10 +3855,6 @@ The last chunk will contain the remaining elements and may be of a smaller size.
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
@@ -4449,10 +4437,6 @@ The last chunk will contain the remaining elements and may be of a smaller size.
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
@@ -6627,10 +6611,6 @@ The last chunk will contain the remaining elements and may be of a smaller size.
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
@@ -7092,10 +7072,6 @@ The last chunk will contain the remaining elements and may be of a smaller size.
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
@@ -7168,10 +7144,6 @@ The last chunk will contain the remaining elements and may be of a smaller size.
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
@@ -7244,10 +7216,6 @@ The last chunk will contain the remaining elements and may be of a smaller size.
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TResult</ReturnType>
@@ -7333,10 +7301,6 @@ The last chunk will contain the remaining elements and may be of a smaller size.
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
@@ -7402,10 +7366,6 @@ The last chunk will contain the remaining elements and may be of a smaller size.
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
@@ -7490,10 +7450,6 @@ The last chunk will contain the remaining elements and may be of a smaller size.
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
@@ -7566,10 +7522,6 @@ The last chunk will contain the remaining elements and may be of a smaller size.
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
@@ -7643,10 +7595,6 @@ The last chunk will contain the remaining elements and may be of a smaller size.
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TResult</ReturnType>
@@ -7732,10 +7680,6 @@ The last chunk will contain the remaining elements and may be of a smaller size.
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
@@ -7801,10 +7745,6 @@ The last chunk will contain the remaining elements and may be of a smaller size.
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
@@ -9762,10 +9702,6 @@ The query behavior that occurs as a result of executing an expression tree
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TSource</ReturnType>
diff --git a/xml/System.Media/SoundPlayer.xml b/xml/System.Media/SoundPlayer.xml
index 64c28fe1a06..366c0d48ef8 100644
--- a/xml/System.Media/SoundPlayer.xml
+++ b/xml/System.Media/SoundPlayer.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -196,12 +192,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="soundLocation" Type="System.String" />
       </Parameters>
@@ -252,10 +242,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="serializationInfo" Type="System.Runtime.Serialization.SerializationInfo" />
@@ -547,12 +533,6 @@ This method stores in the task it returns all non-usage exceptions that the meth
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -604,12 +584,6 @@ This method stores in the task it returns all non-usage exceptions that the meth
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -661,12 +635,6 @@ This method stores in the task it returns all non-usage exceptions that the meth
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -911,14 +879,6 @@ This method stores in the task it returns all non-usage exceptions that the meth
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Media/SystemSounds.xml b/xml/System.Media/SystemSounds.xml
index 6e6789f7f83..5fb9494baf8 100644
--- a/xml/System.Media/SystemSounds.xml
+++ b/xml/System.Media/SystemSounds.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Retrieves sounds associated with a set of Windows operating system sound-event types. This class cannot be inherited.</summary>
diff --git a/xml/System.Net.Cache/HttpRequestCachePolicy.xml b/xml/System.Net.Cache/HttpRequestCachePolicy.xml
index efa4c063885..59d42fd2df0 100644
--- a/xml/System.Net.Cache/HttpRequestCachePolicy.xml
+++ b/xml/System.Net.Cache/HttpRequestCachePolicy.xml
@@ -751,12 +751,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Cache/RequestCachePolicy.xml b/xml/System.Net.Cache/RequestCachePolicy.xml
index 6f7ff194e4e..380816da5e8 100644
--- a/xml/System.Net.Cache/RequestCachePolicy.xml
+++ b/xml/System.Net.Cache/RequestCachePolicy.xml
@@ -281,12 +281,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Headers/AuthenticationHeaderValue.xml b/xml/System.Net.Http.Headers/AuthenticationHeaderValue.xml
index 6bb10fb288f..dcfb1afcbb3 100644
--- a/xml/System.Net.Http.Headers/AuthenticationHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/AuthenticationHeaderValue.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents authentication information in Authorization, ProxyAuthorization, WWW-Authenticate, and Proxy-Authenticate header values.</summary>
@@ -225,12 +221,6 @@ Authorization: Bearer ACCESS_TOKEN
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -331,10 +321,6 @@ Authorization: Bearer ACCESS_TOKEN
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -537,12 +523,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Headers/CacheControlHeaderValue.xml b/xml/System.Net.Http.Headers/CacheControlHeaderValue.xml
index dc17b82ce7c..2a44bf72f27 100644
--- a/xml/System.Net.Http.Headers/CacheControlHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/CacheControlHeaderValue.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the value of the Cache-Control header.</summary>
@@ -119,12 +115,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1066,12 +1056,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Headers/ContentDispositionHeaderValue.xml b/xml/System.Net.Http.Headers/ContentDispositionHeaderValue.xml
index 5c87cfbedab..038faa9791a 100644
--- a/xml/System.Net.Http.Headers/ContentDispositionHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/ContentDispositionHeaderValue.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the value of the Content-Disposition header.</summary>
@@ -111,12 +107,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="source" Type="System.Net.Http.Headers.ContentDispositionHeaderValue" />
       </Parameters>
@@ -153,12 +143,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="dispositionType" Type="System.String" />
       </Parameters>
@@ -236,14 +220,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -549,10 +525,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.ICollection&lt;System.Net.Http.Headers.NameValueHeaderValue&gt;</ReturnType>
@@ -591,12 +563,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.Headers.ContentDispositionHeaderValue</ReturnType>
       </ReturnValue>
@@ -760,12 +726,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Headers/ContentRangeHeaderValue.xml b/xml/System.Net.Http.Headers/ContentRangeHeaderValue.xml
index eadb9c7221c..7932c553d46 100644
--- a/xml/System.Net.Http.Headers/ContentRangeHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/ContentRangeHeaderValue.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the value of the Content-Range header.</summary>
@@ -213,12 +209,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -624,12 +614,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Headers/EntityTagHeaderValue.xml b/xml/System.Net.Http.Headers/EntityTagHeaderValue.xml
index 29793454d06..45034e811e1 100644
--- a/xml/System.Net.Http.Headers/EntityTagHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/EntityTagHeaderValue.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an entity-tag header value.</summary>
@@ -223,12 +219,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -525,12 +515,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Headers/HeaderStringValues+Enumerator.xml b/xml/System.Net.Http.Headers/HeaderStringValues+Enumerator.xml
index 3f07adf0066..8b78a95f6de 100644
--- a/xml/System.Net.Http.Headers/HeaderStringValues+Enumerator.xml
+++ b/xml/System.Net.Http.Headers/HeaderStringValues+Enumerator.xml
@@ -54,10 +54,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Net.Http.Headers/HeaderStringValues.xml b/xml/System.Net.Http.Headers/HeaderStringValues.xml
index 98e0489d677..6bb514442e3 100644
--- a/xml/System.Net.Http.Headers/HeaderStringValues.xml
+++ b/xml/System.Net.Http.Headers/HeaderStringValues.xml
@@ -173,12 +173,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Headers/HttpContentHeaders.xml b/xml/System.Net.Http.Headers/HttpContentHeaders.xml
index 54a70744696..0be676287f3 100644
--- a/xml/System.Net.Http.Headers/HttpContentHeaders.xml
+++ b/xml/System.Net.Http.Headers/HttpContentHeaders.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the collection of Content Headers as defined in RFC 2616.</summary>
@@ -83,10 +79,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.ICollection&lt;System.String&gt;</ReturnType>
@@ -166,10 +158,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.ICollection&lt;System.String&gt;</ReturnType>
@@ -212,10 +200,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.ICollection&lt;System.String&gt;</ReturnType>
diff --git a/xml/System.Net.Http.Headers/HttpHeaderValueCollection`1.xml b/xml/System.Net.Http.Headers/HttpHeaderValueCollection`1.xml
index 328f11baf20..d1e7573ffc7 100644
--- a/xml/System.Net.Http.Headers/HttpHeaderValueCollection`1.xml
+++ b/xml/System.Net.Http.Headers/HttpHeaderValueCollection`1.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The header collection type.</typeparam>
@@ -413,12 +409,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -588,12 +578,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Headers/HttpHeaders.xml b/xml/System.Net.Http.Headers/HttpHeaders.xml
index ffac89a801b..6f6806fd170 100644
--- a/xml/System.Net.Http.Headers/HttpHeaders.xml
+++ b/xml/System.Net.Http.Headers/HttpHeaders.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A collection of headers and their values as defined in RFC 2616.</summary>
diff --git a/xml/System.Net.Http.Headers/HttpHeadersNonValidated+Enumerator.xml b/xml/System.Net.Http.Headers/HttpHeadersNonValidated+Enumerator.xml
index e0c45ed2219..17b40baa458 100644
--- a/xml/System.Net.Http.Headers/HttpHeadersNonValidated+Enumerator.xml
+++ b/xml/System.Net.Http.Headers/HttpHeadersNonValidated+Enumerator.xml
@@ -26,12 +26,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Enumerates the elements of a <see cref="T:System.Net.Http.Headers.HttpHeadersNonValidated" />.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Net.Http.Headers/HttpHeadersNonValidated.xml b/xml/System.Net.Http.Headers/HttpHeadersNonValidated.xml
index b52ed562613..1d63fe527e4 100644
--- a/xml/System.Net.Http.Headers/HttpHeadersNonValidated.xml
+++ b/xml/System.Net.Http.Headers/HttpHeadersNonValidated.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a view on top of a <see cref="T:System.Net.Http.Headers.HttpHeaders" /> collection that avoids forcing validation or parsing on its contents.</summary>
diff --git a/xml/System.Net.Http.Headers/HttpRequestHeaders.xml b/xml/System.Net.Http.Headers/HttpRequestHeaders.xml
index dfcae823c5f..1b4f3b06434 100644
--- a/xml/System.Net.Http.Headers/HttpRequestHeaders.xml
+++ b/xml/System.Net.Http.Headers/HttpRequestHeaders.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the collection of Request Headers as defined in RFC 2616.</summary>
@@ -235,14 +231,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.Headers.AuthenticationHeaderValue</ReturnType>
@@ -286,14 +274,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.Headers.CacheControlHeaderValue</ReturnType>
@@ -519,14 +499,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -570,14 +542,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -731,14 +695,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.Headers.RangeConditionHeaderValue</ReturnType>
@@ -879,14 +835,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -930,14 +878,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.Headers.AuthenticationHeaderValue</ReturnType>
@@ -981,14 +921,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.Headers.RangeHeaderValue</ReturnType>
@@ -1032,14 +964,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Uri</ReturnType>
diff --git a/xml/System.Net.Http.Headers/HttpResponseHeaders.xml b/xml/System.Net.Http.Headers/HttpResponseHeaders.xml
index 827677de556..c4e389523ec 100644
--- a/xml/System.Net.Http.Headers/HttpResponseHeaders.xml
+++ b/xml/System.Net.Http.Headers/HttpResponseHeaders.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the collection of Response Headers as defined in RFC 2616.</summary>
@@ -163,14 +159,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.Headers.CacheControlHeaderValue</ReturnType>
@@ -323,14 +311,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.Headers.EntityTagHeaderValue</ReturnType>
@@ -374,14 +354,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Uri</ReturnType>
@@ -499,14 +471,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.Headers.RetryConditionHeaderValue</ReturnType>
diff --git a/xml/System.Net.Http.Headers/MediaTypeHeaderValue.xml b/xml/System.Net.Http.Headers/MediaTypeHeaderValue.xml
index c0004010568..6be6fd29ce3 100644
--- a/xml/System.Net.Http.Headers/MediaTypeHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/MediaTypeHeaderValue.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a media type used in a Content-Type header as defined in the RFC 2616.</summary>
@@ -107,12 +103,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="source" Type="System.Net.Http.Headers.MediaTypeHeaderValue" />
       </Parameters>
@@ -149,12 +139,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="mediaType" Type="System.String" />
       </Parameters>
@@ -181,12 +165,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="mediaType" Type="System.String" Index="0" FrameworkAlternate="net-7.0;net-8.0;net-9.0" />
         <Parameter Name="charSet" Type="System.String" Index="1" FrameworkAlternate="net-7.0;net-8.0;net-9.0">
@@ -413,10 +391,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.ICollection&lt;System.Net.Http.Headers.NameValueHeaderValue&gt;</ReturnType>
@@ -455,12 +429,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.Headers.MediaTypeHeaderValue</ReturnType>
       </ReturnValue>
@@ -552,12 +520,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Headers/MediaTypeWithQualityHeaderValue.xml b/xml/System.Net.Http.Headers/MediaTypeWithQualityHeaderValue.xml
index 0682c9693db..a576015d386 100644
--- a/xml/System.Net.Http.Headers/MediaTypeWithQualityHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/MediaTypeWithQualityHeaderValue.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a media type with an additional quality factor used in a Content-Type header.</summary>
@@ -311,12 +307,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Headers/NameValueHeaderValue.xml b/xml/System.Net.Http.Headers/NameValueHeaderValue.xml
index d7a18710c4e..2265609d2da 100644
--- a/xml/System.Net.Http.Headers/NameValueHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/NameValueHeaderValue.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a name/value pair used in various headers as defined in RFC 2616.</summary>
@@ -228,12 +224,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -493,12 +483,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -562,14 +546,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Net.Http.Headers/NameValueWithParametersHeaderValue.xml b/xml/System.Net.Http.Headers/NameValueWithParametersHeaderValue.xml
index a2967d0395f..ffcb2762650 100644
--- a/xml/System.Net.Http.Headers/NameValueWithParametersHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/NameValueWithParametersHeaderValue.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a name/value pair with parameters used in various headers as defined in RFC 2616.</summary>
@@ -224,12 +220,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -489,12 +479,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Headers/ProductHeaderValue.xml b/xml/System.Net.Http.Headers/ProductHeaderValue.xml
index 9d559f7ffa4..348ad609cda 100644
--- a/xml/System.Net.Http.Headers/ProductHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/ProductHeaderValue.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a product token value in a User-Agent header.</summary>
@@ -188,12 +184,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -449,12 +439,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -518,10 +502,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Net.Http.Headers/ProductInfoHeaderValue.xml b/xml/System.Net.Http.Headers/ProductInfoHeaderValue.xml
index db0a7b0721c..66e3781ea82 100644
--- a/xml/System.Net.Http.Headers/ProductInfoHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/ProductInfoHeaderValue.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a value which can either be a product or a comment in a User-Agent header.</summary>
@@ -231,10 +227,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -273,12 +265,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -423,10 +409,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.Headers.ProductHeaderValue</ReturnType>
diff --git a/xml/System.Net.Http.Headers/RangeConditionHeaderValue.xml b/xml/System.Net.Http.Headers/RangeConditionHeaderValue.xml
index 9cb54ef5da7..09e7921a5e1 100644
--- a/xml/System.Net.Http.Headers/RangeConditionHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/RangeConditionHeaderValue.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an If-Range header value which can either be a date/time or an entity-tag value.</summary>
@@ -255,10 +251,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.Headers.EntityTagHeaderValue</ReturnType>
@@ -297,12 +289,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -526,12 +512,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Headers/RangeHeaderValue.xml b/xml/System.Net.Http.Headers/RangeHeaderValue.xml
index 02bd3315514..bde02be338f 100644
--- a/xml/System.Net.Http.Headers/RangeHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/RangeHeaderValue.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Range header value.</summary>
@@ -211,12 +207,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -476,12 +466,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Headers/RangeItemHeaderValue.xml b/xml/System.Net.Http.Headers/RangeItemHeaderValue.xml
index 63496dd1ddf..3c8f1183f08 100644
--- a/xml/System.Net.Http.Headers/RangeItemHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/RangeItemHeaderValue.xml
@@ -153,12 +153,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -371,12 +365,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Headers/RetryConditionHeaderValue.xml b/xml/System.Net.Http.Headers/RetryConditionHeaderValue.xml
index aa32e698e1b..1d90cad9c3b 100644
--- a/xml/System.Net.Http.Headers/RetryConditionHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/RetryConditionHeaderValue.xml
@@ -240,12 +240,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -341,12 +335,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.Headers.RetryConditionHeaderValue</ReturnType>
       </ReturnValue>
@@ -437,12 +425,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -481,12 +463,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Headers/StringWithQualityHeaderValue.xml b/xml/System.Net.Http.Headers/StringWithQualityHeaderValue.xml
index f2d1dfc9238..427d7f2b9cf 100644
--- a/xml/System.Net.Http.Headers/StringWithQualityHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/StringWithQualityHeaderValue.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a string header value with an optional quality.</summary>
@@ -182,12 +178,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -447,12 +437,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Headers/TransferCodingHeaderValue.xml b/xml/System.Net.Http.Headers/TransferCodingHeaderValue.xml
index caaa1da55d4..9e79106c7cd 100644
--- a/xml/System.Net.Http.Headers/TransferCodingHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/TransferCodingHeaderValue.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an accept-encoding header value.</summary>
@@ -178,12 +174,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -443,12 +433,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Headers/TransferCodingWithQualityHeaderValue.xml b/xml/System.Net.Http.Headers/TransferCodingWithQualityHeaderValue.xml
index 75429c01b2d..5cf5e3fe685 100644
--- a/xml/System.Net.Http.Headers/TransferCodingWithQualityHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/TransferCodingWithQualityHeaderValue.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an Accept-Encoding header value with optional quality factor.</summary>
@@ -311,12 +307,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Headers/ViaHeaderValue.xml b/xml/System.Net.Http.Headers/ViaHeaderValue.xml
index ee8c8da468e..ecdad90346e 100644
--- a/xml/System.Net.Http.Headers/ViaHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/ViaHeaderValue.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the value of a Via header.</summary>
@@ -247,10 +243,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -289,12 +281,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -440,10 +426,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -644,12 +626,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Headers/WarningHeaderValue.xml b/xml/System.Net.Http.Headers/WarningHeaderValue.xml
index 84fc6392bb6..52625f44ee8 100644
--- a/xml/System.Net.Http.Headers/WarningHeaderValue.xml
+++ b/xml/System.Net.Http.Headers/WarningHeaderValue.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a warning value used by the Warning header.</summary>
@@ -289,12 +285,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -554,12 +544,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http.Json/HttpClientJsonExtensions.xml b/xml/System.Net.Http.Json/HttpClientJsonExtensions.xml
index e3cf7ff2e50..f36c29d6a28 100644
--- a/xml/System.Net.Http.Json/HttpClientJsonExtensions.xml
+++ b/xml/System.Net.Http.Json/HttpClientJsonExtensions.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains extension methods to send and receive HTTP content as JSON.</summary>
@@ -367,10 +363,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;TValue&gt;</ReturnType>
@@ -430,10 +422,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;TValue&gt;</ReturnType>
@@ -486,10 +474,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;TValue&gt;</ReturnType>
@@ -606,10 +590,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;TValue&gt;</ReturnType>
@@ -715,10 +695,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IAsyncEnumerable&lt;TValue&gt;</ReturnType>
@@ -778,10 +754,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IAsyncEnumerable&lt;TValue&gt;</ReturnType>
@@ -834,10 +806,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IAsyncEnumerable&lt;TValue&gt;</ReturnType>
@@ -954,10 +922,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IAsyncEnumerable&lt;TValue&gt;</ReturnType>
@@ -1392,10 +1356,6 @@ This method uses <xref:System.Text.Json.JsonSerializerDefaults.Web?displayProper
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;TValue&gt;</ReturnType>
@@ -1463,10 +1423,6 @@ This method uses <xref:System.Text.Json.JsonSerializerDefaults.Web?displayProper
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;TValue&gt;</ReturnType>
@@ -1527,10 +1483,6 @@ This method uses <xref:System.Text.Json.JsonSerializerDefaults.Web?displayProper
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;TValue&gt;</ReturnType>
@@ -1646,10 +1598,6 @@ This method uses <xref:System.Text.Json.JsonSerializerDefaults.Web?displayProper
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;TValue&gt;</ReturnType>
diff --git a/xml/System.Net.Http.Json/HttpContentJsonExtensions.xml b/xml/System.Net.Http.Json/HttpContentJsonExtensions.xml
index 24aaa98f9de..7ce59d9ba71 100644
--- a/xml/System.Net.Http.Json/HttpContentJsonExtensions.xml
+++ b/xml/System.Net.Http.Json/HttpContentJsonExtensions.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains extension methods to read and then parse the <see cref="T:System.Net.Http.HttpContent" /> from JSON.</summary>
@@ -103,10 +99,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IAsyncEnumerable&lt;TValue&gt;</ReturnType>
@@ -378,10 +370,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;T&gt;</ReturnType>
diff --git a/xml/System.Net.Http.Json/JsonContent.xml b/xml/System.Net.Http.Json/JsonContent.xml
index 28def3e5d67..8eced2c6e90 100644
--- a/xml/System.Net.Http.Json/JsonContent.xml
+++ b/xml/System.Net.Http.Json/JsonContent.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides HTTP content based on JSON.</summary>
@@ -97,10 +93,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.Json.JsonContent</ReturnType>
@@ -150,10 +142,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.Json.JsonContent</ReturnType>
@@ -195,12 +183,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.Json.JsonContent</ReturnType>
       </ReturnValue>
@@ -419,10 +401,6 @@ This method always returns `false` since <xref:System.Net.Http.Json.JsonContent.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Net.Http.Metrics/HttpMetricsEnrichmentContext.xml b/xml/System.Net.Http.Metrics/HttpMetricsEnrichmentContext.xml
index 71b20a7db62..c8c397045f1 100644
--- a/xml/System.Net.Http.Metrics/HttpMetricsEnrichmentContext.xml
+++ b/xml/System.Net.Http.Metrics/HttpMetricsEnrichmentContext.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides functionality for enriching the <c>http.client.request.duration</c> metric.</summary>
@@ -121,10 +117,6 @@ The callbacks are responsible for adding custom tags via <xref:System.Net.Http.M
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Exception</ReturnType>
@@ -175,10 +167,6 @@ The callbacks are responsible for adding custom tags via <xref:System.Net.Http.M
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.HttpResponseMessage</ReturnType>
diff --git a/xml/System.Net.Http/ByteArrayContent.xml b/xml/System.Net.Http/ByteArrayContent.xml
index 54f55c212e5..dab12011ff4 100644
--- a/xml/System.Net.Http/ByteArrayContent.xml
+++ b/xml/System.Net.Http/ByteArrayContent.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides HTTP content based on a byte array.</summary>
diff --git a/xml/System.Net.Http/DelegatingHandler.xml b/xml/System.Net.Http/DelegatingHandler.xml
index 84191c710b3..2d3a5022452 100644
--- a/xml/System.Net.Http/DelegatingHandler.xml
+++ b/xml/System.Net.Http/DelegatingHandler.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A type for HTTP handlers that delegate the processing of HTTP response messages to another handler, called the inner handler.</summary>
@@ -219,14 +215,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.HttpMessageHandler</ReturnType>
diff --git a/xml/System.Net.Http/FormUrlEncodedContent.xml b/xml/System.Net.Http/FormUrlEncodedContent.xml
index 5fa9c05a625..ba72fd12717 100644
--- a/xml/System.Net.Http/FormUrlEncodedContent.xml
+++ b/xml/System.Net.Http/FormUrlEncodedContent.xml
@@ -103,12 +103,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http/HttpClient.xml b/xml/System.Net.Http/HttpClient.xml
index bd09926e03a..1489a4c9230 100644
--- a/xml/System.Net.Http/HttpClient.xml
+++ b/xml/System.Net.Http/HttpClient.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a class for sending HTTP requests and receiving HTTP responses from a resource identified by a URI.</summary>
@@ -256,14 +252,6 @@ The specified `handler` will be disposed of by calling [HttpClient.Dispose](xref
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Uri</ReturnType>
@@ -2304,12 +2292,6 @@ The <paramref name="requestUri" /> is not an absolute URI.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Net.Http.HttpResponseMessage&gt;</ReturnType>
       </ReturnValue>
@@ -2364,12 +2346,6 @@ The <paramref name="requestUri" /> is not an absolute URI.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Net.Http.HttpResponseMessage&gt;</ReturnType>
       </ReturnValue>
@@ -2416,12 +2392,6 @@ The <paramref name="requestUri" /> is not an absolute URI.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Net.Http.HttpResponseMessage&gt;</ReturnType>
       </ReturnValue>
@@ -2479,12 +2449,6 @@ The <paramref name="requestUri" /> is not an absolute URI.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Net.Http.HttpResponseMessage&gt;</ReturnType>
       </ReturnValue>
@@ -2558,12 +2522,6 @@ The <paramref name="requestUri" /> is not an absolute URI.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Net.Http.HttpResponseMessage&gt;</ReturnType>
       </ReturnValue>
@@ -2631,12 +2589,6 @@ The <paramref name="requestUri" /> is not an absolute URI.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Net.Http.HttpResponseMessage&gt;</ReturnType>
       </ReturnValue>
@@ -2696,12 +2648,6 @@ The <paramref name="requestUri" /> is not an absolute URI.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Net.Http.HttpResponseMessage&gt;</ReturnType>
       </ReturnValue>
@@ -2772,12 +2718,6 @@ The <paramref name="requestUri" /> is not an absolute URI.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Net.Http.HttpResponseMessage&gt;</ReturnType>
       </ReturnValue>
@@ -2859,12 +2799,6 @@ The <paramref name="requestUri" /> is not an absolute URI.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Net.Http.HttpResponseMessage&gt;</ReturnType>
       </ReturnValue>
@@ -2932,12 +2866,6 @@ The <paramref name="requestUri" /> is not an absolute URI.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Net.Http.HttpResponseMessage&gt;</ReturnType>
       </ReturnValue>
@@ -2997,12 +2925,6 @@ The <paramref name="requestUri" /> is not an absolute URI.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Net.Http.HttpResponseMessage&gt;</ReturnType>
       </ReturnValue>
@@ -3073,12 +2995,6 @@ The <paramref name="requestUri" /> is not an absolute URI.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Net.Http.HttpResponseMessage&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http/HttpClientFactoryExtensions.xml b/xml/System.Net.Http/HttpClientFactoryExtensions.xml
index 3fc556c4383..57490504235 100644
--- a/xml/System.Net.Http/HttpClientFactoryExtensions.xml
+++ b/xml/System.Net.Http/HttpClientFactoryExtensions.xml
@@ -41,12 +41,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.HttpClient</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http/HttpClientHandler.xml b/xml/System.Net.Http/HttpClientHandler.xml
index b31489e04c1..c6ef2c31f73 100644
--- a/xml/System.Net.Http/HttpClientHandler.xml
+++ b/xml/System.Net.Http/HttpClientHandler.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The default message handler used by <see cref="T:System.Net.Http.HttpClient" /> in .NET Framework and .NET Core 2.0 and earlier.</summary>
@@ -325,10 +321,6 @@ After NuGet package v4.3.2, the default value of <xref:System.Net.DecompressionM
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netstandard-2.0">
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
@@ -387,14 +379,6 @@ On .NET Core, the key usage attribute on the X509 certificate, if present, is re
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.CookieContainer</ReturnType>
@@ -1037,10 +1021,6 @@ handler.ServerCertificateCustomValidationCallback = HttpClientHandler.DangerousA
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.HttpResponseMessage</ReturnType>
@@ -1101,12 +1081,6 @@ handler.ServerCertificateCustomValidationCallback = HttpClientHandler.DangerousA
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Net.Http.HttpResponseMessage&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http/HttpContent.xml b/xml/System.Net.Http/HttpContent.xml
index c93d7af217d..a3049c592b3 100644
--- a/xml/System.Net.Http/HttpContent.xml
+++ b/xml/System.Net.Http/HttpContent.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A base class representing an HTTP entity body and content headers.</summary>
diff --git a/xml/System.Net.Http/HttpDiagnosticsHttpRequestMessageExtensions.xml b/xml/System.Net.Http/HttpDiagnosticsHttpRequestMessageExtensions.xml
index caf4f9c55af..21ad6321959 100644
--- a/xml/System.Net.Http/HttpDiagnosticsHttpRequestMessageExtensions.xml
+++ b/xml/System.Net.Http/HttpDiagnosticsHttpRequestMessageExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/System.Net.Http/HttpIOException.xml b/xml/System.Net.Http/HttpIOException.xml
index adde3e6db67..655b9b96c83 100644
--- a/xml/System.Net.Http/HttpIOException.xml
+++ b/xml/System.Net.Http/HttpIOException.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The exception that is thrown when an error occurs while reading the response.</summary>
@@ -41,12 +37,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="httpRequestError" Type="System.Net.Http.HttpRequestError" />
         <Parameter Name="message" Type="System.String" />
diff --git a/xml/System.Net.Http/HttpMessageHandler.xml b/xml/System.Net.Http/HttpMessageHandler.xml
index 12ee3f1dd5d..cc5c241c694 100644
--- a/xml/System.Net.Http/HttpMessageHandler.xml
+++ b/xml/System.Net.Http/HttpMessageHandler.xml
@@ -214,12 +214,6 @@ When the `disposing` parameter is `true`, this method releases all resources hel
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.HttpResponseMessage</ReturnType>
       </ReturnValue>
@@ -264,12 +258,6 @@ When the `disposing` parameter is `true`, this method releases all resources hel
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Net.Http.HttpResponseMessage&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http/HttpMessageHandlerFactoryExtensions.xml b/xml/System.Net.Http/HttpMessageHandlerFactoryExtensions.xml
index c3c0ee01bfb..8008e07d827 100644
--- a/xml/System.Net.Http/HttpMessageHandlerFactoryExtensions.xml
+++ b/xml/System.Net.Http/HttpMessageHandlerFactoryExtensions.xml
@@ -40,12 +40,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.HttpMessageHandler</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Http/HttpMessageInvoker.xml b/xml/System.Net.Http/HttpMessageInvoker.xml
index 87fa19705f7..da792782ad2 100644
--- a/xml/System.Net.Http/HttpMessageInvoker.xml
+++ b/xml/System.Net.Http/HttpMessageInvoker.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A specialty class that allows applications to call the <see cref="M:System.Net.Http.HttpMessageInvoker.SendAsync(System.Net.Http.HttpRequestMessage,System.Threading.CancellationToken)" /> method on an HTTP handler chain.</summary>
diff --git a/xml/System.Net.Http/HttpMethod.xml b/xml/System.Net.Http/HttpMethod.xml
index 52aeee8cdde..ed6422e5680 100644
--- a/xml/System.Net.Http/HttpMethod.xml
+++ b/xml/System.Net.Http/HttpMethod.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A helper class for retrieving and comparing standard HTTP methods and for creating new HTTP methods.</summary>
@@ -209,12 +205,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -264,12 +254,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -471,12 +455,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -521,12 +499,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -595,12 +567,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.HttpMethod</ReturnType>
         <Attributes>
diff --git a/xml/System.Net.Http/HttpProtocolException.xml b/xml/System.Net.Http/HttpProtocolException.xml
index 203d1c52ac3..35442bde7b6 100644
--- a/xml/System.Net.Http/HttpProtocolException.xml
+++ b/xml/System.Net.Http/HttpProtocolException.xml
@@ -52,16 +52,6 @@ When calling <xref:System.Net.Http.HttpClient> or <xref:System.Net.Http.SocketsH
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="errorCode" Type="System.Int64" />
         <Parameter Name="message" Type="System.String" />
diff --git a/xml/System.Net.Http/HttpRequestException.xml b/xml/System.Net.Http/HttpRequestException.xml
index 23d24616b0e..c36a8e805e8 100644
--- a/xml/System.Net.Http/HttpRequestException.xml
+++ b/xml/System.Net.Http/HttpRequestException.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Net.Http/HttpRequestMessage.xml b/xml/System.Net.Http/HttpRequestMessage.xml
index 2ef3cdac8f3..ca196404442 100644
--- a/xml/System.Net.Http/HttpRequestMessage.xml
+++ b/xml/System.Net.Http/HttpRequestMessage.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a HTTP request message.</summary>
@@ -236,14 +232,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.HttpContent</ReturnType>
@@ -566,14 +554,6 @@ When the `disposing` parameter is `true`, this method releases all resources hel
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Uri</ReturnType>
diff --git a/xml/System.Net.Http/HttpRequestOptions.xml b/xml/System.Net.Http/HttpRequestOptions.xml
index a37f0cf347f..86c335284eb 100644
--- a/xml/System.Net.Http/HttpRequestOptions.xml
+++ b/xml/System.Net.Http/HttpRequestOptions.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of options for an HTTP request.</summary>
diff --git a/xml/System.Net.Http/HttpRequestOptionsKey`1.xml b/xml/System.Net.Http/HttpRequestOptionsKey`1.xml
index c8d3813f39f..8ff2d2d98be 100644
--- a/xml/System.Net.Http/HttpRequestOptionsKey`1.xml
+++ b/xml/System.Net.Http/HttpRequestOptionsKey`1.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TValue">The type of the value of the option.</typeparam>
diff --git a/xml/System.Net.Http/HttpResilienceHttpRequestMessageExtensions.xml b/xml/System.Net.Http/HttpResilienceHttpRequestMessageExtensions.xml
index e28e22b3d15..8cfdfb9de86 100644
--- a/xml/System.Net.Http/HttpResilienceHttpRequestMessageExtensions.xml
+++ b/xml/System.Net.Http/HttpResilienceHttpRequestMessageExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/System.Net.Http/HttpResponseMessage.xml b/xml/System.Net.Http/HttpResponseMessage.xml
index 28a8a48af19..988e7ed71dd 100644
--- a/xml/System.Net.Http/HttpResponseMessage.xml
+++ b/xml/System.Net.Http/HttpResponseMessage.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a HTTP response message including the status code and data.</summary>
@@ -460,14 +456,6 @@ When the `disposing` parameter is `true`, this method releases all resources hel
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -511,14 +499,6 @@ When the `disposing` parameter is `true`, this method releases all resources hel
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.HttpRequestMessage</ReturnType>
diff --git a/xml/System.Net.Http/IHttpClientFactory.xml b/xml/System.Net.Http/IHttpClientFactory.xml
index f00df02a99b..453dca5c7da 100644
--- a/xml/System.Net.Http/IHttpClientFactory.xml
+++ b/xml/System.Net.Http/IHttpClientFactory.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             A factory abstraction for a component that can create <see cref="T:System.Net.Http.HttpClient" /> instances with custom
diff --git a/xml/System.Net.Http/IHttpMessageHandlerFactory.xml b/xml/System.Net.Http/IHttpMessageHandlerFactory.xml
index e2f6ce1cf7b..2bbe4de073c 100644
--- a/xml/System.Net.Http/IHttpMessageHandlerFactory.xml
+++ b/xml/System.Net.Http/IHttpMessageHandlerFactory.xml
@@ -17,12 +17,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             A factory abstraction for a component that can create <see cref="T:System.Net.Http.HttpMessageHandler" /> instances with custom
diff --git a/xml/System.Net.Http/MessageProcessingHandler.xml b/xml/System.Net.Http/MessageProcessingHandler.xml
index 48f5f29b25c..bde89de9325 100644
--- a/xml/System.Net.Http/MessageProcessingHandler.xml
+++ b/xml/System.Net.Http/MessageProcessingHandler.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A base type for handlers which only do some small processing of request and/or response messages.</summary>
diff --git a/xml/System.Net.Http/MultipartContent.xml b/xml/System.Net.Http/MultipartContent.xml
index 13c3b181e99..8bd569d2b75 100644
--- a/xml/System.Net.Http/MultipartContent.xml
+++ b/xml/System.Net.Http/MultipartContent.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a collection of <see cref="T:System.Net.Http.HttpContent" /> objects that get serialized using the multipart/* content type specification.</summary>
diff --git a/xml/System.Net.Http/MultipartFormDataContent.xml b/xml/System.Net.Http/MultipartFormDataContent.xml
index fea935d9217..5fce0445415 100644
--- a/xml/System.Net.Http/MultipartFormDataContent.xml
+++ b/xml/System.Net.Http/MultipartFormDataContent.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a container for content encoded using multipart/form-data MIME type.</summary>
diff --git a/xml/System.Net.Http/ReadOnlyMemoryContent.xml b/xml/System.Net.Http/ReadOnlyMemoryContent.xml
index fa168bbe277..f6a609f94eb 100644
--- a/xml/System.Net.Http/ReadOnlyMemoryContent.xml
+++ b/xml/System.Net.Http/ReadOnlyMemoryContent.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides HTTP content based on a <see cref="T:System.ReadOnlyMemory`1" />.</summary>
@@ -67,12 +63,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="content" Type="System.ReadOnlyMemory&lt;System.Byte&gt;" />
       </Parameters>
diff --git a/xml/System.Net.Http/SocketsHttpConnectionContext.xml b/xml/System.Net.Http/SocketsHttpConnectionContext.xml
index 23abbe39004..c3ba64a2c9b 100644
--- a/xml/System.Net.Http/SocketsHttpConnectionContext.xml
+++ b/xml/System.Net.Http/SocketsHttpConnectionContext.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the context passed to the <see cref="P:System.Net.Http.SocketsHttpHandler.ConnectCallback" /> for a <see cref="T:System.Net.Http.SocketsHttpHandler" /> instance. .</summary>
diff --git a/xml/System.Net.Http/SocketsHttpHandler.xml b/xml/System.Net.Http/SocketsHttpHandler.xml
index 8273e3f4299..455516d4aef 100644
--- a/xml/System.Net.Http/SocketsHttpHandler.xml
+++ b/xml/System.Net.Http/SocketsHttpHandler.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the default message handler used by <see cref="T:System.Net.Http.HttpClient" /> in .NET Core 2.1 and later.</summary>
@@ -299,14 +295,6 @@ The following code example sets TCP `KeepAlive` on the underlying `Socket`.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.CookieContainer</ReturnType>
@@ -1112,12 +1100,6 @@ Draining occurs when a request is cancelled or a response is disposed prior to f
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Http.HttpResponseMessage</ReturnType>
       </ReturnValue>
@@ -1161,12 +1143,6 @@ Draining occurs when a request is cancelled or a response is disposed prior to f
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Net.Http.HttpResponseMessage&gt;</ReturnType>
       </ReturnValue>
@@ -1206,14 +1182,6 @@ Draining occurs when a request is cancelled or a response is disposed prior to f
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Security.SslClientAuthenticationOptions</ReturnType>
diff --git a/xml/System.Net.Http/SocketsHttpPlaintextStreamFilterContext.xml b/xml/System.Net.Http/SocketsHttpPlaintextStreamFilterContext.xml
index 252cb0f66fe..60e822be182 100644
--- a/xml/System.Net.Http/SocketsHttpPlaintextStreamFilterContext.xml
+++ b/xml/System.Net.Http/SocketsHttpPlaintextStreamFilterContext.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the context passed to the PlaintextStreamFilter for a SocketsHttpHandler instance.</summary>
diff --git a/xml/System.Net.Http/StreamContent.xml b/xml/System.Net.Http/StreamContent.xml
index 05c75047172..8ca5bb93ec3 100644
--- a/xml/System.Net.Http/StreamContent.xml
+++ b/xml/System.Net.Http/StreamContent.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides HTTP content based on a stream.</summary>
diff --git a/xml/System.Net.Http/StringContent.xml b/xml/System.Net.Http/StringContent.xml
index 25708bc2f88..9db15e3210d 100644
--- a/xml/System.Net.Http/StringContent.xml
+++ b/xml/System.Net.Http/StringContent.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides HTTP content based on a string.</summary>
@@ -212,12 +208,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="content" Type="System.String" Index="0" FrameworkAlternate="net-7.0;net-8.0;net-9.0">
           <Attributes>
@@ -274,12 +264,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="content" Type="System.String">
           <Attributes>
diff --git a/xml/System.Net.Http/WinHttpHandler.xml b/xml/System.Net.Http/WinHttpHandler.xml
index 21dc92593cd..a97a2f67f5e 100644
--- a/xml/System.Net.Http/WinHttpHandler.xml
+++ b/xml/System.Net.Http/WinHttpHandler.xml
@@ -31,10 +31,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -220,10 +216,6 @@ When this property is set to `true`, all HTTP redirect responses from the server
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509Certificate2Collection</ReturnType>
@@ -573,10 +565,6 @@ When this property is set to `true`, all HTTP redirect responses from the server
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IDictionary&lt;System.String,System.Object&gt;</ReturnType>
@@ -696,12 +684,6 @@ When this property is set to `true`, all HTTP redirect responses from the server
         <AssemblyVersion>8.0.0.2</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Net.Http.HttpResponseMessage&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Mail/AlternateView.xml b/xml/System.Net.Mail/AlternateView.xml
index 0d0be08db2c..6848a2b3f72 100644
--- a/xml/System.Net.Mail/AlternateView.xml
+++ b/xml/System.Net.Mail/AlternateView.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the format to view an email message.</summary>
@@ -497,14 +493,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Uri</ReturnType>
diff --git a/xml/System.Net.Mail/AlternateViewCollection.xml b/xml/System.Net.Mail/AlternateViewCollection.xml
index cf636a4194b..d88a3fb068b 100644
--- a/xml/System.Net.Mail/AlternateViewCollection.xml
+++ b/xml/System.Net.Mail/AlternateViewCollection.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Net.Mail.AlternateView" /> objects.</summary>
diff --git a/xml/System.Net.Mail/Attachment.xml b/xml/System.Net.Mail/Attachment.xml
index 89e3e84d47c..b3fe4dc7d4f 100644
--- a/xml/System.Net.Mail/Attachment.xml
+++ b/xml/System.Net.Mail/Attachment.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an attachment to an email.</summary>
@@ -116,12 +112,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="fileName" Type="System.String" />
       </Parameters>
@@ -185,12 +175,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="contentStream" Type="System.IO.Stream" />
         <Parameter Name="contentType" Type="System.Net.Mime.ContentType" />
@@ -256,12 +240,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="contentStream" Type="System.IO.Stream" />
         <Parameter Name="name" Type="System.String">
@@ -329,12 +307,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="fileName" Type="System.String" />
         <Parameter Name="contentType" Type="System.Net.Mime.ContentType" />
@@ -381,12 +353,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="fileName" Type="System.String" />
         <Parameter Name="mediaType" Type="System.String">
@@ -593,12 +559,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Mail.Attachment</ReturnType>
       </ReturnValue>
@@ -645,12 +605,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Mail.Attachment</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Mail/AttachmentBase.xml b/xml/System.Net.Mail/AttachmentBase.xml
index 599353c94a8..620ec573091 100644
--- a/xml/System.Net.Mail/AttachmentBase.xml
+++ b/xml/System.Net.Mail/AttachmentBase.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Base class that represents an email attachment. Classes <see cref="T:System.Net.Mail.Attachment" />, <see cref="T:System.Net.Mail.AlternateView" />, and <see cref="T:System.Net.Mail.LinkedResource" /> derive from this class.</summary>
diff --git a/xml/System.Net.Mail/AttachmentCollection.xml b/xml/System.Net.Mail/AttachmentCollection.xml
index b2f18734cfc..d461fd326c2 100644
--- a/xml/System.Net.Mail/AttachmentCollection.xml
+++ b/xml/System.Net.Mail/AttachmentCollection.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Stores attachments to be sent as part of an email message.</summary>
diff --git a/xml/System.Net.Mail/LinkedResource.xml b/xml/System.Net.Mail/LinkedResource.xml
index b9777c59fa9..ef9d8cd77e7 100644
--- a/xml/System.Net.Mail/LinkedResource.xml
+++ b/xml/System.Net.Mail/LinkedResource.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an embedded external resource in an email attachment, such as an image in an HTML attachment.</summary>
@@ -429,14 +425,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Uri</ReturnType>
diff --git a/xml/System.Net.Mail/LinkedResourceCollection.xml b/xml/System.Net.Mail/LinkedResourceCollection.xml
index b435b79c634..fed1c34d378 100644
--- a/xml/System.Net.Mail/LinkedResourceCollection.xml
+++ b/xml/System.Net.Mail/LinkedResourceCollection.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Stores linked resources to be sent as part of an email message.</summary>
diff --git a/xml/System.Net.Mail/MailAddress.xml b/xml/System.Net.Mail/MailAddress.xml
index 3797bcbd520..96afe4c543d 100644
--- a/xml/System.Net.Mail/MailAddress.xml
+++ b/xml/System.Net.Mail/MailAddress.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the address of an electronic mail sender or recipient.</summary>
@@ -328,12 +324,6 @@ The following code example demonstrates sending an email message by using the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="address" Type="System.String">
           <Attributes>
@@ -541,12 +531,6 @@ The following code example demonstrates sending an email message by using the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -754,12 +738,6 @@ The following code example demonstrates sending an email message by using the <x
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -810,12 +788,6 @@ The following code example demonstrates sending an email message by using the <x
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -868,12 +840,6 @@ The following code example demonstrates sending an email message by using the <x
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Mail/MailAddressCollection.xml b/xml/System.Net.Mail/MailAddressCollection.xml
index 0b47c456e06..d99af979691 100644
--- a/xml/System.Net.Mail/MailAddressCollection.xml
+++ b/xml/System.Net.Mail/MailAddressCollection.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Store email addresses that are associated with an email message.</summary>
diff --git a/xml/System.Net.Mail/MailMessage.xml b/xml/System.Net.Mail/MailMessage.xml
index bed70405ce9..f3da86104d9 100644
--- a/xml/System.Net.Mail/MailMessage.xml
+++ b/xml/System.Net.Mail/MailMessage.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an email message that can be sent using the <see cref="T:System.Net.Mail.SmtpClient" /> class.</summary>
@@ -684,14 +680,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1037,14 +1025,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Mail.MailAddress</ReturnType>
@@ -1213,14 +1193,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Encoding</ReturnType>
@@ -1377,14 +1349,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
           <AttributeName Language="C#">[System.Obsolete("ReplyTo is obsoleted for this type.  Please use ReplyToList instead which can accept multiple addresses. http://go.microsoft.com/fwlink/?linkid=14202")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("ReplyTo is obsoleted for this type.  Please use ReplyToList instead which can accept multiple addresses. http://go.microsoft.com/fwlink/?linkid=14202")&gt;]</AttributeName>
@@ -1489,14 +1453,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Mail.MailAddress</ReturnType>
@@ -1605,14 +1561,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Encoding</ReturnType>
diff --git a/xml/System.Net.Mail/SmtpClient.xml b/xml/System.Net.Mail/SmtpClient.xml
index cf357a69021..11e440cfd6b 100644
--- a/xml/System.Net.Mail/SmtpClient.xml
+++ b/xml/System.Net.Mail/SmtpClient.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Allows applications to send email by using the Simple Mail Transfer Protocol (SMTP). The <see cref="T:System.Net.Mail.SmtpClient" /> type is obsolete on some platforms and not recommended on others; for more information, see the Remarks section.</summary>
@@ -351,10 +347,6 @@ The classes shown in the following table are used to construct email messages th
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509CertificateCollection</ReturnType>
@@ -879,12 +871,6 @@ The classes shown in the following table are used to construct email messages th
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1081,12 +1067,6 @@ The classes shown in the following table are used to construct email messages th
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1201,12 +1181,6 @@ The classes shown in the following table are used to construct email messages th
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1345,12 +1319,6 @@ The classes shown in the following table are used to construct email messages th
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1747,12 +1715,6 @@ The classes shown in the following table are used to construct email messages th
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -1835,12 +1797,6 @@ The classes shown in the following table are used to construct email messages th
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -1941,12 +1897,6 @@ The classes shown in the following table are used to construct email messages th
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -2059,12 +2009,6 @@ The classes shown in the following table are used to construct email messages th
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -2192,10 +2136,6 @@ The classes shown in the following table are used to construct email messages th
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.ServicePoint</ReturnType>
diff --git a/xml/System.Net.Mail/SmtpException.xml b/xml/System.Net.Mail/SmtpException.xml
index 09016570854..f47013ec8ca 100644
--- a/xml/System.Net.Mail/SmtpException.xml
+++ b/xml/System.Net.Mail/SmtpException.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -350,10 +346,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="serializationInfo" Type="System.Runtime.Serialization.SerializationInfo" />
@@ -471,10 +463,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Net.Mail/SmtpFailedRecipientException.xml b/xml/System.Net.Mail/SmtpFailedRecipientException.xml
index 15cfb2663bc..1269c37d0cd 100644
--- a/xml/System.Net.Mail/SmtpFailedRecipientException.xml
+++ b/xml/System.Net.Mail/SmtpFailedRecipientException.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -262,10 +258,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
@@ -519,10 +511,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Net.Mail/SmtpFailedRecipientsException.xml b/xml/System.Net.Mail/SmtpFailedRecipientsException.xml
index 3d5ca730e9e..55e899088d7 100644
--- a/xml/System.Net.Mail/SmtpFailedRecipientsException.xml
+++ b/xml/System.Net.Mail/SmtpFailedRecipientsException.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -157,12 +153,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
       </Parameters>
@@ -264,12 +254,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
         <Parameter Name="innerException" Type="System.Exception" />
diff --git a/xml/System.Net.Mime/ContentDisposition.xml b/xml/System.Net.Mime/ContentDisposition.xml
index 0e985495fcf..53d3beb83af 100644
--- a/xml/System.Net.Mime/ContentDisposition.xml
+++ b/xml/System.Net.Mime/ContentDisposition.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a MIME protocol Content-Disposition header.</summary>
@@ -347,12 +343,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -410,14 +400,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Net.Mime/ContentType.xml b/xml/System.Net.Mime/ContentType.xml
index 1430e8b8cdd..a749c8b9595 100644
--- a/xml/System.Net.Mime/ContentType.xml
+++ b/xml/System.Net.Mime/ContentType.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a MIME protocol Content-Type header.</summary>
@@ -228,14 +224,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -303,14 +291,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -373,12 +353,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Mime/DispositionTypeNames.xml b/xml/System.Net.Mime/DispositionTypeNames.xml
index 718dd509df2..ee7eaf1fc8e 100644
--- a/xml/System.Net.Mime/DispositionTypeNames.xml
+++ b/xml/System.Net.Mime/DispositionTypeNames.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Supplies the strings used to specify the disposition type for an email attachment.</summary>
diff --git a/xml/System.Net.Mime/MediaTypeNames.xml b/xml/System.Net.Mime/MediaTypeNames.xml
index ddd2ef14147..4646c43238d 100644
--- a/xml/System.Net.Mime/MediaTypeNames.xml
+++ b/xml/System.Net.Mime/MediaTypeNames.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the media type information for an email message attachment.</summary>
diff --git a/xml/System.Net.NetworkInformation/GatewayIPAddressInformation.xml b/xml/System.Net.NetworkInformation/GatewayIPAddressInformation.xml
index e62e3e906d6..62f3b5c38ac 100644
--- a/xml/System.Net.NetworkInformation/GatewayIPAddressInformation.xml
+++ b/xml/System.Net.NetworkInformation/GatewayIPAddressInformation.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the IP address of the network gateway. This class cannot be instantiated.</summary>
diff --git a/xml/System.Net.NetworkInformation/GatewayIPAddressInformationCollection.xml b/xml/System.Net.NetworkInformation/GatewayIPAddressInformationCollection.xml
index 20d42949113..af1509d53be 100644
--- a/xml/System.Net.NetworkInformation/GatewayIPAddressInformationCollection.xml
+++ b/xml/System.Net.NetworkInformation/GatewayIPAddressInformationCollection.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Stores a set of <see cref="T:System.Net.NetworkInformation.GatewayIPAddressInformation" /> types.</summary>
diff --git a/xml/System.Net.NetworkInformation/IPAddressCollection.xml b/xml/System.Net.NetworkInformation/IPAddressCollection.xml
index de3d18784b4..d052e86f57c 100644
--- a/xml/System.Net.NetworkInformation/IPAddressCollection.xml
+++ b/xml/System.Net.NetworkInformation/IPAddressCollection.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Stores a set of <see cref="T:System.Net.IPAddress" /> types.</summary>
diff --git a/xml/System.Net.NetworkInformation/IPAddressInformation.xml b/xml/System.Net.NetworkInformation/IPAddressInformation.xml
index ce74a57e4ec..ba56f59430f 100644
--- a/xml/System.Net.NetworkInformation/IPAddressInformation.xml
+++ b/xml/System.Net.NetworkInformation/IPAddressInformation.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about a network interface address.</summary>
diff --git a/xml/System.Net.NetworkInformation/IPAddressInformationCollection.xml b/xml/System.Net.NetworkInformation/IPAddressInformationCollection.xml
index 97236b84ad0..808e9e39f9d 100644
--- a/xml/System.Net.NetworkInformation/IPAddressInformationCollection.xml
+++ b/xml/System.Net.NetworkInformation/IPAddressInformationCollection.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Stores a set of <see cref="T:System.Net.NetworkInformation.IPAddressInformation" /> types.</summary>
diff --git a/xml/System.Net.NetworkInformation/IPGlobalProperties.xml b/xml/System.Net.NetworkInformation/IPGlobalProperties.xml
index 0a82c36214f..c3fbf17aa37 100644
--- a/xml/System.Net.NetworkInformation/IPGlobalProperties.xml
+++ b/xml/System.Net.NetworkInformation/IPGlobalProperties.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about the network connectivity of the local computer.</summary>
@@ -149,12 +145,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.NetworkInformation/IPInterfaceProperties.xml b/xml/System.Net.NetworkInformation/IPInterfaceProperties.xml
index 80a43dbdec6..580eed99164 100644
--- a/xml/System.Net.NetworkInformation/IPInterfaceProperties.xml
+++ b/xml/System.Net.NetworkInformation/IPInterfaceProperties.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about network interfaces that support Internet Protocol version 4 (IPv4) or Internet Protocol version 6 (IPv6).</summary>
diff --git a/xml/System.Net.NetworkInformation/MulticastIPAddressInformationCollection.xml b/xml/System.Net.NetworkInformation/MulticastIPAddressInformationCollection.xml
index 4391fce38c1..04a1c2a3c96 100644
--- a/xml/System.Net.NetworkInformation/MulticastIPAddressInformationCollection.xml
+++ b/xml/System.Net.NetworkInformation/MulticastIPAddressInformationCollection.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Stores a set of <see cref="T:System.Net.NetworkInformation.MulticastIPAddressInformation" /> types.</summary>
diff --git a/xml/System.Net.NetworkInformation/NetworkChange.xml b/xml/System.Net.NetworkInformation/NetworkChange.xml
index ad4bb011e97..ff13b0f76e4 100644
--- a/xml/System.Net.NetworkInformation/NetworkChange.xml
+++ b/xml/System.Net.NetworkInformation/NetworkChange.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Allows applications to receive notification when the Internet Protocol (IP) address of a network interface, also called a network card or adapter, changes.</summary>
@@ -300,10 +296,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports the .NET Framework infrastructure and is not intended to be used directly from your code.", true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports the .NET Framework infrastructure and is not intended to be used directly from your code.", true)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Net.NetworkInformation/NetworkInformationException.xml b/xml/System.Net.NetworkInformation/NetworkInformationException.xml
index fea1d1cbc09..0407acf1fd3 100644
--- a/xml/System.Net.NetworkInformation/NetworkInformationException.xml
+++ b/xml/System.Net.NetworkInformation/NetworkInformationException.xml
@@ -209,10 +209,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Net.NetworkInformation/NetworkInterface.xml b/xml/System.Net.NetworkInformation/NetworkInterface.xml
index 8d131f3149d..0268e8c5552 100644
--- a/xml/System.Net.NetworkInformation/NetworkInterface.xml
+++ b/xml/System.Net.NetworkInformation/NetworkInterface.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides configuration and statistical information for a network interface.</summary>
diff --git a/xml/System.Net.NetworkInformation/PhysicalAddress.xml b/xml/System.Net.NetworkInformation/PhysicalAddress.xml
index 5af2abcf44d..3c42e16c718 100644
--- a/xml/System.Net.NetworkInformation/PhysicalAddress.xml
+++ b/xml/System.Net.NetworkInformation/PhysicalAddress.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the Media Access Control (MAC) address for a network interface (adapter).</summary>
@@ -160,12 +156,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -362,12 +352,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.NetworkInformation.PhysicalAddress</ReturnType>
       </ReturnValue>
@@ -567,12 +551,6 @@ In .NET Framework and .NET Core 3.1 and earlier, an address that contains `f0-e1
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -640,12 +618,6 @@ In .NET Framework and .NET Core 3.1 and earlier, an address that contains `f0-e1
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.NetworkInformation/Ping.xml b/xml/System.Net.NetworkInformation/Ping.xml
index 34a9287007a..1af399fefcf 100644
--- a/xml/System.Net.NetworkInformation/Ping.xml
+++ b/xml/System.Net.NetworkInformation/Ping.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Allows an application to determine whether a remote computer is accessible over the network.</summary>
@@ -352,14 +348,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.NetworkInformation.PingCompletedEventHandler</ReturnType>
diff --git a/xml/System.Net.NetworkInformation/PingCompletedEventArgs.xml b/xml/System.Net.NetworkInformation/PingCompletedEventArgs.xml
index db244ec2778..74fef100453 100644
--- a/xml/System.Net.NetworkInformation/PingCompletedEventArgs.xml
+++ b/xml/System.Net.NetworkInformation/PingCompletedEventArgs.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Net.NetworkInformation.Ping.PingCompleted" /> event.</summary>
diff --git a/xml/System.Net.NetworkInformation/PingException.xml b/xml/System.Net.NetworkInformation/PingException.xml
index 22f7e3ceeec..db825da73c8 100644
--- a/xml/System.Net.NetworkInformation/PingException.xml
+++ b/xml/System.Net.NetworkInformation/PingException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -171,10 +167,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Net.NetworkInformation/PingReply.xml b/xml/System.Net.NetworkInformation/PingReply.xml
index 171e6d195a5..48953469d31 100644
--- a/xml/System.Net.NetworkInformation/PingReply.xml
+++ b/xml/System.Net.NetworkInformation/PingReply.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about the status and data resulting from a <see cref="Overload:System.Net.NetworkInformation.Ping.Send" /> or <see cref="Overload:System.Net.NetworkInformation.Ping.SendAsync" /> operation.</summary>
@@ -235,10 +231,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.NetworkInformation.PingOptions</ReturnType>
diff --git a/xml/System.Net.NetworkInformation/TcpConnectionInformation.xml b/xml/System.Net.NetworkInformation/TcpConnectionInformation.xml
index 4af8cc4db28..1c0f1d29415 100644
--- a/xml/System.Net.NetworkInformation/TcpConnectionInformation.xml
+++ b/xml/System.Net.NetworkInformation/TcpConnectionInformation.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about the Transmission Control Protocol (TCP) connections on the local computer.</summary>
diff --git a/xml/System.Net.NetworkInformation/UnicastIPAddressInformation.xml b/xml/System.Net.NetworkInformation/UnicastIPAddressInformation.xml
index 43aed10e20f..c08c96a04a6 100644
--- a/xml/System.Net.NetworkInformation/UnicastIPAddressInformation.xml
+++ b/xml/System.Net.NetworkInformation/UnicastIPAddressInformation.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about a network interface's unicast address.</summary>
diff --git a/xml/System.Net.NetworkInformation/UnicastIPAddressInformationCollection.xml b/xml/System.Net.NetworkInformation/UnicastIPAddressInformationCollection.xml
index 1926e8b75eb..bcca258b2e9 100644
--- a/xml/System.Net.NetworkInformation/UnicastIPAddressInformationCollection.xml
+++ b/xml/System.Net.NetworkInformation/UnicastIPAddressInformationCollection.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Stores a set of <see cref="T:System.Net.NetworkInformation.UnicastIPAddressInformation" /> types.</summary>
diff --git a/xml/System.Net.Quic/QuicClientConnectionOptions.xml b/xml/System.Net.Quic/QuicClientConnectionOptions.xml
index 55334df79a8..ffbf9460b84 100644
--- a/xml/System.Net.Quic/QuicClientConnectionOptions.xml
+++ b/xml/System.Net.Quic/QuicClientConnectionOptions.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Options for client (outbound) <see cref="T:System.Net.Quic.QuicConnection">Quic connections</see>.</summary>
@@ -91,14 +87,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.IPEndPoint</ReturnType>
diff --git a/xml/System.Net.Quic/QuicConnection.xml b/xml/System.Net.Quic/QuicConnection.xml
index 8da389a0a24..62319c6c1c1 100644
--- a/xml/System.Net.Quic/QuicConnection.xml
+++ b/xml/System.Net.Quic/QuicConnection.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a QUIC connection, which doesn't send or receive data itself but rather allows opening or accepting multiple <see cref="T:System.Net.Quic.QuicStream">streams</see>.</summary>
@@ -302,10 +298,6 @@ If <xref:System.Net.Quic.QuicConnection.CloseAsync(System.Int64,System.Threading
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509Certificate</ReturnType>
diff --git a/xml/System.Net.Quic/QuicConnectionOptions.xml b/xml/System.Net.Quic/QuicConnectionOptions.xml
index 3665155b3d7..c798b59e21c 100644
--- a/xml/System.Net.Quic/QuicConnectionOptions.xml
+++ b/xml/System.Net.Quic/QuicConnectionOptions.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Shared options for both client (outbound) and server (inbound) <see cref="T:System.Net.Quic.QuicConnection">Quic connections</see>.</summary>
diff --git a/xml/System.Net.Quic/QuicException.xml b/xml/System.Net.Quic/QuicException.xml
index 8e68bfab604..7af8b26e15f 100644
--- a/xml/System.Net.Quic/QuicException.xml
+++ b/xml/System.Net.Quic/QuicException.xml
@@ -34,12 +34,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="error" Type="System.Net.Quic.QuicError" />
         <Parameter Name="applicationErrorCode" Type="System.Nullable&lt;System.Int64&gt;" />
diff --git a/xml/System.Net.Quic/QuicListener.xml b/xml/System.Net.Quic/QuicListener.xml
index 08959f7dde5..34a5a94c001 100644
--- a/xml/System.Net.Quic/QuicListener.xml
+++ b/xml/System.Net.Quic/QuicListener.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a listener that listens for incoming QUIC connections. <see cref="T:System.Net.Quic.QuicListener" /> can accept multiple <see cref="T:System.Net.Quic.QuicConnection">Quic connections</see>.</summary>
diff --git a/xml/System.Net.Quic/QuicListenerOptions.xml b/xml/System.Net.Quic/QuicListenerOptions.xml
index c1766618bdd..6d787b65425 100644
--- a/xml/System.Net.Quic/QuicListenerOptions.xml
+++ b/xml/System.Net.Quic/QuicListenerOptions.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Options to provide to a <see cref="T:System.Net.Quic.QuicListener" />.</summary>
diff --git a/xml/System.Net.Quic/QuicServerConnectionOptions.xml b/xml/System.Net.Quic/QuicServerConnectionOptions.xml
index c3b042bd37f..487fef054df 100644
--- a/xml/System.Net.Quic/QuicServerConnectionOptions.xml
+++ b/xml/System.Net.Quic/QuicServerConnectionOptions.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Options for server (inbound) <see cref="T:System.Net.Quic.QuicConnection">Quic connections</see>. These options are provided by <see cref="P:System.Net.Quic.QuicListenerOptions.ConnectionOptionsCallback" />.</summary>
diff --git a/xml/System.Net.Quic/QuicStream.xml b/xml/System.Net.Quic/QuicStream.xml
index fb7de0b6605..49a47857460 100644
--- a/xml/System.Net.Quic/QuicStream.xml
+++ b/xml/System.Net.Quic/QuicStream.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a QUIC stream. <see cref="T:System.Net.Quic.QuicStream" /> can be <see cref="F:System.Net.Quic.QuicStreamType.Unidirectional">unidirectional</see>, that is, write-only for the opening side, or <see cref="F:System.Net.Quic.QuicStreamType.Bidirectional">bidirectional</see>, which allows both sides to write.</summary>
@@ -552,12 +548,6 @@ Equivalent to using <xref:System.Net.Quic.QuicStream.WriteAsync(System.ReadOnlyM
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -617,12 +607,6 @@ Equivalent to using <xref:System.Net.Quic.QuicStream.WriteAsync(System.ReadOnlyM
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -867,12 +851,6 @@ Equivalent to using <xref:System.Net.Quic.QuicStream.WriteAsync(System.ReadOnlyM
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -930,12 +908,6 @@ Equivalent to using <xref:System.Net.Quic.QuicStream.WriteAsync(System.ReadOnlyM
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
@@ -966,12 +938,6 @@ Equivalent to using <xref:System.Net.Quic.QuicStream.WriteAsync(System.ReadOnlyM
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Security/AuthenticatedStream.xml b/xml/System.Net.Security/AuthenticatedStream.xml
index 9da629f0be9..78831047fa7 100644
--- a/xml/System.Net.Security/AuthenticatedStream.xml
+++ b/xml/System.Net.Security/AuthenticatedStream.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods for passing credentials across a stream and requesting or performing authentication for client-server applications.</summary>
diff --git a/xml/System.Net.Security/CipherSuitesPolicy.xml b/xml/System.Net.Security/CipherSuitesPolicy.xml
index 61e9961bd7c..b6669340f8f 100644
--- a/xml/System.Net.Security/CipherSuitesPolicy.xml
+++ b/xml/System.Net.Security/CipherSuitesPolicy.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-8.0;net-9.0">
       <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("android")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("android")&gt;]</AttributeName>
diff --git a/xml/System.Net.Security/NegotiateAuthentication.xml b/xml/System.Net.Security/NegotiateAuthentication.xml
index 685783c92fe..ee5ac4534bf 100644
--- a/xml/System.Net.Security/NegotiateAuthentication.xml
+++ b/xml/System.Net.Security/NegotiateAuthentication.xml
@@ -38,12 +38,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="clientOptions" Type="System.Net.Security.NegotiateAuthenticationClientOptions" />
       </Parameters>
@@ -67,12 +61,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="serverOptions" Type="System.Net.Security.NegotiateAuthenticationServerOptions" />
       </Parameters>
@@ -203,12 +191,6 @@ When <xref:System.Net.Security.NegotiateAuthenticationStatusCode.ContinueNeeded>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -397,10 +379,6 @@ When <xref:System.Net.Security.NegotiateAuthenticationStatusCode.ContinueNeeded>
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -482,10 +460,6 @@ The negotiated level of protection is only available when the session
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Principal.IIdentity</ReturnType>
@@ -517,10 +491,6 @@ The negotiated level of protection is only available when the session
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Net.Security/NegotiateAuthenticationClientOptions.xml b/xml/System.Net.Security/NegotiateAuthenticationClientOptions.xml
index a4b3ff572f6..b712304857d 100644
--- a/xml/System.Net.Security/NegotiateAuthenticationClientOptions.xml
+++ b/xml/System.Net.Security/NegotiateAuthenticationClientOptions.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a property bag for the client side of an authentication exchange.</summary>
@@ -97,14 +93,6 @@ When the authentication is wrapped in a secure channel, like TLS, the channel bi
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Authentication.ExtendedProtection.ChannelBinding</ReturnType>
@@ -228,14 +216,6 @@ When the authentication is wrapped in a secure channel, like TLS, the channel bi
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Net.Security/NegotiateAuthenticationServerOptions.xml b/xml/System.Net.Security/NegotiateAuthenticationServerOptions.xml
index d4102949e1b..054474313c0 100644
--- a/xml/System.Net.Security/NegotiateAuthenticationServerOptions.xml
+++ b/xml/System.Net.Security/NegotiateAuthenticationServerOptions.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a property bag for the server side of an authentication exchange.</summary>
@@ -68,14 +64,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Authentication.ExtendedProtection.ChannelBinding</ReturnType>
@@ -153,14 +141,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Authentication.ExtendedProtection.ExtendedProtectionPolicy</ReturnType>
diff --git a/xml/System.Net.Security/NegotiateStream.xml b/xml/System.Net.Security/NegotiateStream.xml
index 309617c0bc0..06039a64968 100644
--- a/xml/System.Net.Security/NegotiateStream.xml
+++ b/xml/System.Net.Security/NegotiateStream.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a stream that uses the Negotiate security protocol to authenticate the client, and optionally the server, in client-server communication.</summary>
@@ -1108,12 +1104,6 @@ The following example demonstrates calling this constructor. This code example i
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1659,12 +1649,6 @@ The following example demonstrates calling this constructor. This code example i
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -2167,12 +2151,6 @@ The following example demonstrates calling this method to begin an asynchronous
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -2236,12 +2214,6 @@ The following example demonstrates calling this method to begin an asynchronous
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -2411,12 +2383,6 @@ The following example demonstrates calling this method to begin an asynchronous
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -3931,12 +3897,6 @@ Authentication has not occurred.</exception>
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -4333,12 +4293,6 @@ This method reads asynchronously as much data as is available into `buffer` and
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Security/SslApplicationProtocol.xml b/xml/System.Net.Security/SslApplicationProtocol.xml
index 521198a37af..6b7c7c82554 100644
--- a/xml/System.Net.Security/SslApplicationProtocol.xml
+++ b/xml/System.Net.Security/SslApplicationProtocol.xml
@@ -86,12 +86,6 @@ The following code example demonstrates negotiation of the application-level pro
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="protocol" Type="System.Byte[]" />
       </Parameters>
@@ -123,12 +117,6 @@ The following code example demonstrates negotiation of the application-level pro
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="protocol" Type="System.String" />
       </Parameters>
@@ -200,12 +188,6 @@ The following code example demonstrates negotiation of the application-level pro
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -475,12 +457,6 @@ The following code example demonstrates negotiation of the application-level pro
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Security/SslCertificateTrust.xml b/xml/System.Net.Security/SslCertificateTrust.xml
index aa498d33af4..fe58fa71b1e 100644
--- a/xml/System.Net.Security/SslCertificateTrust.xml
+++ b/xml/System.Net.Security/SslCertificateTrust.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a trust policy for use with SSL/TLS connections.</summary>
diff --git a/xml/System.Net.Security/SslClientAuthenticationOptions.xml b/xml/System.Net.Security/SslClientAuthenticationOptions.xml
index 651ca67a99b..99f3bb4f8e7 100644
--- a/xml/System.Net.Security/SslClientAuthenticationOptions.xml
+++ b/xml/System.Net.Security/SslClientAuthenticationOptions.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a client authentication property bag for the <see cref="T:System.Net.Security.SslStream" />.</summary>
diff --git a/xml/System.Net.Security/SslClientHelloInfo.xml b/xml/System.Net.Security/SslClientHelloInfo.xml
index 37f1880fb5e..1a1168873b0 100644
--- a/xml/System.Net.Security/SslClientHelloInfo.xml
+++ b/xml/System.Net.Security/SslClientHelloInfo.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This struct contains information from received TLS Client Hello frame.</summary>
diff --git a/xml/System.Net.Security/SslServerAuthenticationOptions.xml b/xml/System.Net.Security/SslServerAuthenticationOptions.xml
index 245ae531b5a..69cf8b35e8d 100644
--- a/xml/System.Net.Security/SslServerAuthenticationOptions.xml
+++ b/xml/System.Net.Security/SslServerAuthenticationOptions.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This struct represents a server authentication property bag for the <see cref="T:System.Net.Security.SslStream" />.</summary>
@@ -504,4 +500,4 @@ When the value of this property is not `null`:
       </Docs>
     </Member>
   </Members>
-</Type>
\ No newline at end of file
+</Type>
diff --git a/xml/System.Net.Security/SslStream.xml b/xml/System.Net.Security/SslStream.xml
index 009dba13985..11b0b111eb7 100644
--- a/xml/System.Net.Security/SslStream.xml
+++ b/xml/System.Net.Security/SslStream.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a stream used for client-server communication that uses the Secure Socket Layer (SSL) security protocol to authenticate the server and optionally the client.</summary>
@@ -415,10 +411,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -517,12 +509,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="innerStream" Type="System.IO.Stream" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">
           <Attributes>
@@ -1913,12 +1899,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -2011,12 +1991,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -4132,10 +4106,6 @@ Authentication has not occurred.</exception>
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509Certificate</ReturnType>
@@ -4436,12 +4406,6 @@ This property gets the cipher suite that is going to be used in the communicatio
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -4684,10 +4648,6 @@ This property gets the cipher suite that is going to be used in the communicatio
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509Certificate</ReturnType>
@@ -5153,12 +5113,6 @@ If the property is accessed, the remote certificate will not be disposed when th
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Security/SslStreamCertificateContext.xml b/xml/System.Net.Security/SslStreamCertificateContext.xml
index a5f2159a66a..655f4512714 100644
--- a/xml/System.Net.Security/SslStreamCertificateContext.xml
+++ b/xml/System.Net.Security/SslStreamCertificateContext.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a set of certificates used for building a certificate chain.</summary>
diff --git a/xml/System.Net.ServerSentEvents/SseItem`1.xml b/xml/System.Net.ServerSentEvents/SseItem`1.xml
index e7908e4f54b..c02c29bcc4a 100644
--- a/xml/System.Net.ServerSentEvents/SseItem`1.xml
+++ b/xml/System.Net.ServerSentEvents/SseItem`1.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">Specifies the type of data payload in the event.</typeparam>
diff --git a/xml/System.Net.ServerSentEvents/SseParser.xml b/xml/System.Net.ServerSentEvents/SseParser.xml
index 1e02f91ccfb..e5675ea618d 100644
--- a/xml/System.Net.ServerSentEvents/SseParser.xml
+++ b/xml/System.Net.ServerSentEvents/SseParser.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a parser for parsing server-sent events.</summary>
diff --git a/xml/System.Net.ServerSentEvents/SseParser`1.xml b/xml/System.Net.ServerSentEvents/SseParser`1.xml
index cf2ff8a5a8d..0c7b8db07b6 100644
--- a/xml/System.Net.ServerSentEvents/SseParser`1.xml
+++ b/xml/System.Net.ServerSentEvents/SseParser`1.xml
@@ -126,10 +126,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Net.Sockets/IPPacketInformation.xml b/xml/System.Net.Sockets/IPPacketInformation.xml
index 31da5a1075b..821d765ebba 100644
--- a/xml/System.Net.Sockets/IPPacketInformation.xml
+++ b/xml/System.Net.Sockets/IPPacketInformation.xml
@@ -88,10 +88,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -172,12 +168,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Sockets/IPv6MulticastOption.xml b/xml/System.Net.Sockets/IPv6MulticastOption.xml
index 30a93c0e878..2e40dab5fb7 100644
--- a/xml/System.Net.Sockets/IPv6MulticastOption.xml
+++ b/xml/System.Net.Sockets/IPv6MulticastOption.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains option values for joining an IPv6 multicast group.</summary>
diff --git a/xml/System.Net.Sockets/LingerOption.xml b/xml/System.Net.Sockets/LingerOption.xml
index f0449b1f81b..55be0124d49 100644
--- a/xml/System.Net.Sockets/LingerOption.xml
+++ b/xml/System.Net.Sockets/LingerOption.xml
@@ -222,12 +222,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Sockets/MulticastOption.xml b/xml/System.Net.Sockets/MulticastOption.xml
index bab568ffd73..e4765e4a329 100644
--- a/xml/System.Net.Sockets/MulticastOption.xml
+++ b/xml/System.Net.Sockets/MulticastOption.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains <see cref="T:System.Net.IPAddress" /> values used to join and drop multicast groups.</summary>
@@ -397,14 +393,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Net.Sockets/NetworkStream.xml b/xml/System.Net.Sockets/NetworkStream.xml
index 63ea51cf6d7..4323270979b 100644
--- a/xml/System.Net.Sockets/NetworkStream.xml
+++ b/xml/System.Net.Sockets/NetworkStream.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the underlying stream of data for network access.</summary>
@@ -1465,12 +1461,6 @@ The Close method frees both unmanaged and managed resources associated with the
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1700,12 +1690,6 @@ There is a failure reading from the network.</exception>
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -2147,12 +2131,6 @@ Call `Dispose` when you are finished using the <xref:System.Net.Sockets.NetworkS
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2376,12 +2354,6 @@ There was a failure while writing to the network.</exception>
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Sockets/SendPacketsElement.xml b/xml/System.Net.Sockets/SendPacketsElement.xml
index 29aafe2ee63..9c67cf583fb 100644
--- a/xml/System.Net.Sockets/SendPacketsElement.xml
+++ b/xml/System.Net.Sockets/SendPacketsElement.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an element in a <see cref="T:System.Net.Sockets.SendPacketsElement" /> array.</summary>
@@ -184,12 +180,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="buffer" Type="System.ReadOnlyMemory&lt;System.Byte&gt;" Index="0" FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0" />
       </Parameters>
@@ -283,12 +273,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="buffer" Type="System.ReadOnlyMemory&lt;System.Byte&gt;" Index="0" FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0" />
         <Parameter Name="endOfPacket" Type="System.Boolean" Index="1" FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0" />
@@ -790,10 +774,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -956,10 +936,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1010,10 +986,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.FileStream</ReturnType>
@@ -1055,10 +1027,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.ReadOnlyMemory&lt;System.Byte&gt;&gt;</ReturnType>
diff --git a/xml/System.Net.Sockets/Socket.xml b/xml/System.Net.Sockets/Socket.xml
index 03f76ede49b..bbf47cf7eb2 100644
--- a/xml/System.Net.Sockets/Socket.xml
+++ b/xml/System.Net.Sockets/Socket.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Implements the Berkeley sockets interface.</summary>
@@ -676,12 +672,6 @@ This method populates the <xref:System.Net.Sockets.Socket> instance with data ga
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Net.Sockets.Socket&gt;</ReturnType>
       </ReturnValue>
@@ -887,12 +877,6 @@ This method populates the <xref:System.Net.Sockets.Socket> instance with data ga
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -987,10 +971,6 @@ This method populates the <xref:System.Net.Sockets.Socket> instance with data ga
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1091,12 +1071,6 @@ This method populates the <xref:System.Net.Sockets.Socket> instance with data ga
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -1651,12 +1625,6 @@ This method populates the <xref:System.Net.Sockets.Socket> instance with data ga
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -1741,12 +1709,6 @@ This method populates the <xref:System.Net.Sockets.Socket> instance with data ga
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -1848,12 +1810,6 @@ This method populates the <xref:System.Net.Sockets.Socket> instance with data ga
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -2084,12 +2040,6 @@ This method populates the <xref:System.Net.Sockets.Socket> instance with data ga
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -2477,12 +2427,6 @@ This method populates the <xref:System.Net.Sockets.Socket> instance with data ga
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -2589,12 +2533,6 @@ This method populates the <xref:System.Net.Sockets.Socket> instance with data ga
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -2833,12 +2771,6 @@ This method populates the <xref:System.Net.Sockets.Socket> instance with data ga
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -2974,12 +2906,6 @@ This method populates the <xref:System.Net.Sockets.Socket> instance with data ga
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -3060,12 +2986,6 @@ This method populates the <xref:System.Net.Sockets.Socket> instance with data ga
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -6475,12 +6395,6 @@ The GetHashCode method returns a hash code of this instance. This value can be u
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -6556,12 +6470,6 @@ In general, the `GetSocketOption` method should be used whenever getting a <xref
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -6861,12 +6769,6 @@ In general, the `GetSocketOption` method should be used whenever getting a <xref
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
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-        </Attribute>
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       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -6944,12 +6846,6 @@ In general, the `GetSocketOption` method should be used whenever getting a <xref
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
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-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -7090,14 +6986,6 @@ In general, the `GetSocketOption` method should be used whenever getting a <xref
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
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         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -7311,10 +7199,6 @@ The maximum length of the pending connections queue is determined automatically.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.EndPoint</ReturnType>
@@ -8025,12 +7909,6 @@ The maximum length of the pending connections queue is determined automatically.
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
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       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
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@@ -8295,12 +8173,6 @@ This member outputs trace information when you enable network tracing in your ap
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
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       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
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@@ -8571,12 +8443,6 @@ This member outputs trace information when you enable network tracing in your ap
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
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       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
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@@ -8861,12 +8727,6 @@ If you're using a connectionless <xref:System.Net.Sockets.Socket>, <xref:System.
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
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       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Int32&gt;</ReturnType>
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@@ -9043,12 +8903,6 @@ If you're using a connectionless <xref:System.Net.Sockets.Socket>, <xref:System.
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Int32&gt;</ReturnType>
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@@ -9137,12 +8991,6 @@ If you're using a connectionless <xref:System.Net.Sockets.Socket>, <xref:System.
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
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-        </Attribute>
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       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
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@@ -9184,12 +9032,6 @@ If you're using a connectionless <xref:System.Net.Sockets.Socket>, <xref:System.
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
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       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
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@@ -9408,12 +9250,6 @@ If you're using a connectionless <xref:System.Net.Sockets.Socket>, <xref:System.
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
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-        </Attribute>
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       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
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@@ -9569,12 +9405,6 @@ If you're using a connectionless <xref:System.Net.Sockets.Socket>, <xref:System.
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
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-        </Attribute>
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         <ReturnType>System.Int32</ReturnType>
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@@ -9625,12 +9455,6 @@ If you're using a connectionless <xref:System.Net.Sockets.Socket>, <xref:System.
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
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       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
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@@ -10126,12 +9950,6 @@ If you're using a connectionless <xref:System.Net.Sockets.Socket>, <xref:System.
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
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-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Net.Sockets.SocketReceiveFromResult&gt;</ReturnType>
       </ReturnValue>
@@ -10185,12 +10003,6 @@ If you're using a connectionless <xref:System.Net.Sockets.Socket>, <xref:System.
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
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       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Net.Sockets.SocketReceiveFromResult&gt;</ReturnType>
       </ReturnValue>
@@ -10244,12 +10056,6 @@ If you're using a connectionless <xref:System.Net.Sockets.Socket>, <xref:System.
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
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@@ -10305,12 +10111,6 @@ If you're using a connectionless <xref:System.Net.Sockets.Socket>, <xref:System.
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
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@@ -10676,12 +10476,6 @@ You must call the Bind method before performing this operation.</exception>
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       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Net.Sockets.SocketReceiveMessageFromResult&gt;</ReturnType>
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@@ -10734,12 +10528,6 @@ You must call the Bind method before performing this operation.</exception>
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         <AssemblyName>System.Net</AssemblyName>
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       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Net.Sockets.SocketReceiveMessageFromResult&gt;</ReturnType>
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@@ -10874,10 +10662,6 @@ You must call the Bind method before performing this operation.</exception>
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@@ -10993,12 +10777,6 @@ You must call the Bind method before performing this operation.</exception>
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@@ -11081,12 +10859,6 @@ You must call the Bind method before performing this operation.</exception>
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@@ -11328,12 +11100,6 @@ You must call the Bind method before performing this operation.</exception>
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@@ -11581,12 +11347,6 @@ This member outputs trace information when you enable network tracing in your ap
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@@ -11833,12 +11593,6 @@ The following code example sends the data found in buffer, and specifies <xref:S
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@@ -12141,12 +11895,6 @@ This member outputs trace information when you enable network tracing in your ap
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@@ -12324,12 +12072,6 @@ This member outputs trace information when you enable network tracing in your ap
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@@ -12419,12 +12161,6 @@ This member outputs trace information when you enable network tracing in your ap
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@@ -12464,12 +12200,6 @@ This member outputs trace information when you enable network tracing in your ap
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@@ -12596,12 +12326,6 @@ This member outputs trace information when you enable network tracing in your ap
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@@ -12680,12 +12404,6 @@ This member outputs trace information when you enable network tracing in your ap
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@@ -12766,12 +12484,6 @@ This member outputs trace information when you enable network tracing in your ap
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@@ -12825,12 +12537,6 @@ This member outputs trace information when you enable network tracing in your ap
       <AssemblyInfo>
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@@ -12874,12 +12580,6 @@ This member outputs trace information when you enable network tracing in your ap
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@@ -13189,12 +12889,6 @@ This member outputs trace information when you enable network tracing in your ap
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@@ -13339,12 +13033,6 @@ This member outputs trace information when you enable network tracing in your ap
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
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@@ -13395,12 +13083,6 @@ This member outputs trace information when you enable network tracing in your ap
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         <AssemblyName>System.Net</AssemblyName>
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@@ -13868,12 +13550,6 @@ This member outputs trace information when you enable network tracing in your ap
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-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -13926,12 +13602,6 @@ This member outputs trace information when you enable network tracing in your ap
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -13984,12 +13654,6 @@ This member outputs trace information when you enable network tracing in your ap
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -14118,12 +13782,6 @@ This member outputs trace information when you enable network tracing in your ap
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Sockets/SocketAsyncEventArgs.xml b/xml/System.Net.Sockets/SocketAsyncEventArgs.xml
index 29e3ea458fb..7882de10df8 100644
--- a/xml/System.Net.Sockets/SocketAsyncEventArgs.xml
+++ b/xml/System.Net.Sockets/SocketAsyncEventArgs.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an asynchronous socket operation.</summary>
@@ -1018,10 +1014,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Memory&lt;System.Byte&gt;</ReturnType>
@@ -1154,12 +1146,6 @@ This property is used with the <xref:System.Net.Sockets.Socket.AcceptAsync%2A?di
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1568,12 +1554,6 @@ This property is used with the <xref:System.Net.Sockets.Socket.AcceptAsync%2A?di
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Sockets/SocketException.xml b/xml/System.Net.Sockets/SocketException.xml
index f74a2a1a18d..fdf6f99ffd1 100644
--- a/xml/System.Net.Sockets/SocketException.xml
+++ b/xml/System.Net.Sockets/SocketException.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -216,12 +212,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="errorCode" Type="System.Int32" Index="0" FrameworkAlternate="net-8.0;net-9.0" />
         <Parameter Name="message" Type="System.String" Index="1" FrameworkAlternate="net-8.0;net-9.0" />
diff --git a/xml/System.Net.Sockets/SocketInformation.xml b/xml/System.Net.Sockets/SocketInformation.xml
index 52d30571a82..6e1706d08cb 100644
--- a/xml/System.Net.Sockets/SocketInformation.xml
+++ b/xml/System.Net.Sockets/SocketInformation.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Net.Sockets/SocketTaskExtensions.xml b/xml/System.Net.Sockets/SocketTaskExtensions.xml
index e819ec5eb54..c37fd0bd677 100644
--- a/xml/System.Net.Sockets/SocketTaskExtensions.xml
+++ b/xml/System.Net.Sockets/SocketTaskExtensions.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This class contains extension methods to the <see cref="T:System.Net.Sockets.Socket" /> class.</summary>
@@ -794,10 +790,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
@@ -1116,10 +1108,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
diff --git a/xml/System.Net.Sockets/TcpClient.xml b/xml/System.Net.Sockets/TcpClient.xml
index 82808f80119..8fe495242c4 100644
--- a/xml/System.Net.Sockets/TcpClient.xml
+++ b/xml/System.Net.Sockets/TcpClient.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides client connections for TCP network services.</summary>
@@ -2144,14 +2140,6 @@ The `GetStream` method returns a <xref:System.Net.Sockets.NetworkStream> that yo
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Sockets.LingerOption</ReturnType>
diff --git a/xml/System.Net.Sockets/TcpListener.xml b/xml/System.Net.Sockets/TcpListener.xml
index c5bd40f7ab8..c705615fc39 100644
--- a/xml/System.Net.Sockets/TcpListener.xml
+++ b/xml/System.Net.Sockets/TcpListener.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Listens for connections from TCP network clients.</summary>
@@ -818,12 +814,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -892,12 +882,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Sockets/UdpClient.xml b/xml/System.Net.Sockets/UdpClient.xml
index e1a0e601648..2a64107e051 100644
--- a/xml/System.Net.Sockets/UdpClient.xml
+++ b/xml/System.Net.Sockets/UdpClient.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides User Datagram Protocol (UDP) network services.</summary>
@@ -716,12 +712,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -889,12 +879,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -976,12 +960,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -2505,12 +2483,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Net.Sockets.UdpReceiveResult&gt;</ReturnType>
       </ReturnValue>
@@ -2555,12 +2527,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2665,12 +2631,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2804,12 +2764,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -3011,12 +2965,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -3128,12 +3076,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -3256,12 +3198,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Sockets/UdpReceiveResult.xml b/xml/System.Net.Sockets/UdpReceiveResult.xml
index 9e88a4f921b..b1fa3d9c186 100644
--- a/xml/System.Net.Sockets/UdpReceiveResult.xml
+++ b/xml/System.Net.Sockets/UdpReceiveResult.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Presents UDP receive result information from a call to the <see cref="M:System.Net.Sockets.UdpClient.ReceiveAsync" /> method.</summary>
@@ -225,12 +221,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.Sockets/UnixDomainSocketEndPoint.xml b/xml/System.Net.Sockets/UnixDomainSocketEndPoint.xml
index 11e8684f977..40dd9ca36bf 100644
--- a/xml/System.Net.Sockets/UnixDomainSocketEndPoint.xml
+++ b/xml/System.Net.Sockets/UnixDomainSocketEndPoint.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Unix Domain Socket endpoint as a path.</summary>
@@ -153,12 +149,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.WebSockets/ClientWebSocket.xml b/xml/System.Net.WebSockets/ClientWebSocket.xml
index 661d9d27293..dd2a4be6720 100644
--- a/xml/System.Net.WebSockets/ClientWebSocket.xml
+++ b/xml/System.Net.WebSockets/ClientWebSocket.xml
@@ -159,12 +159,6 @@ Exactly one send and one receive is supported on each <xref:System.Net.WebSocket
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -228,12 +222,6 @@ Exactly one send and one receive is supported on each <xref:System.Net.WebSocket
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -341,10 +329,6 @@ Exactly one send and one receive is supported on each <xref:System.Net.WebSocket
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -385,12 +369,6 @@ Exactly one send and one receive is supported on each <xref:System.Net.WebSocket
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -449,12 +427,6 @@ Exactly one send and one receive is supported on each <xref:System.Net.WebSocket
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -612,10 +584,6 @@ Exactly one send and one receive is supported on each <xref:System.Net.WebSocket
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.WebSockets.ClientWebSocketOptions</ReturnType>
@@ -971,10 +939,6 @@ Exactly one send and one receive is supported on each <xref:System.Net.WebSocket
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Net.WebSockets/ClientWebSocketOptions.xml b/xml/System.Net.WebSockets/ClientWebSocketOptions.xml
index ec280808114..3bbc885041f 100644
--- a/xml/System.Net.WebSockets/ClientWebSocketOptions.xml
+++ b/xml/System.Net.WebSockets/ClientWebSocketOptions.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Options to use with a  <see cref="T:System.Net.WebSockets.ClientWebSocket" /> object.</summary>
@@ -83,12 +79,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -140,14 +130,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509CertificateCollection</ReturnType>
@@ -343,14 +325,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Version</ReturnType>
@@ -648,10 +622,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -705,10 +675,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Net.WebSockets/HttpListenerWebSocketContext.xml b/xml/System.Net.WebSockets/HttpListenerWebSocketContext.xml
index 12204e65891..4d6f646bb7e 100644
--- a/xml/System.Net.WebSockets/HttpListenerWebSocketContext.xml
+++ b/xml/System.Net.WebSockets/HttpListenerWebSocketContext.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides access to information received by the <see cref="T:System.Net.HttpListener" /> class when accepting WebSocket connections.</summary>
diff --git a/xml/System.Net.WebSockets/WebSocket.xml b/xml/System.Net.WebSockets/WebSocket.xml
index ebcfc4408d0..15e062e3092 100644
--- a/xml/System.Net.WebSockets/WebSocket.xml
+++ b/xml/System.Net.WebSockets/WebSocket.xml
@@ -161,12 +161,6 @@ Exactly one send and one receive is supported on each <xref:System.Net.WebSocket
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -232,12 +226,6 @@ Exactly one send and one receive is supported on each <xref:System.Net.WebSocket
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -352,10 +340,6 @@ Exactly one send and one receive is supported on each <xref:System.Net.WebSocket
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -445,10 +429,6 @@ Exactly one send and one receive is supported on each <xref:System.Net.WebSocket
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.WebSockets.WebSocket</ReturnType>
@@ -508,12 +488,6 @@ Exactly one send and one receive is supported on each <xref:System.Net.WebSocket
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.WebSockets.WebSocket</ReturnType>
       </ReturnValue>
@@ -552,12 +526,6 @@ Exactly one send and one receive is supported on each <xref:System.Net.WebSocket
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.WebSockets.WebSocket</ReturnType>
       </ReturnValue>
@@ -1159,10 +1127,6 @@ Exactly one send and one receive is supported on each <xref:System.Net.WebSocket
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1202,12 +1166,6 @@ Exactly one send and one receive is supported on each <xref:System.Net.WebSocket
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net.WebSockets/WebSocketContext.xml b/xml/System.Net.WebSockets/WebSocketContext.xml
index ba5eff4cee9..27f397a7759 100644
--- a/xml/System.Net.WebSockets/WebSocketContext.xml
+++ b/xml/System.Net.WebSockets/WebSocketContext.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Used for accessing the information in the WebSocket handshake.</summary>
@@ -501,10 +497,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Principal.IPrincipal</ReturnType>
diff --git a/xml/System.Net.WebSockets/WebSocketCreationOptions.xml b/xml/System.Net.WebSockets/WebSocketCreationOptions.xml
index 7b74c90fe3f..a819751ea16 100644
--- a/xml/System.Net.WebSockets/WebSocketCreationOptions.xml
+++ b/xml/System.Net.WebSockets/WebSocketCreationOptions.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Options that control how a <see cref="T:System.Net.WebSockets.WebSocket" /> is created.</summary>
diff --git a/xml/System.Net.WebSockets/WebSocketException.xml b/xml/System.Net.WebSockets/WebSocketException.xml
index 0d142eb5131..59b5ded4810 100644
--- a/xml/System.Net.WebSockets/WebSocketException.xml
+++ b/xml/System.Net.WebSockets/WebSocketException.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -733,10 +729,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Net.WebSockets/WebSocketReceiveResult.xml b/xml/System.Net.WebSockets/WebSocketReceiveResult.xml
index 3e4d3f07d3e..7c45c373031 100644
--- a/xml/System.Net.WebSockets/WebSocketReceiveResult.xml
+++ b/xml/System.Net.WebSockets/WebSocketReceiveResult.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>An instance of this class represents the result of performing a single ReceiveAsync operation on a WebSocket.</summary>
diff --git a/xml/System.Net/AuthenticationManager.xml b/xml/System.Net/AuthenticationManager.xml
index c51e7459b41..158f68b9aea 100644
--- a/xml/System.Net/AuthenticationManager.xml
+++ b/xml/System.Net/AuthenticationManager.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-9.0">
       <AttributeName Language="C#">[System.Obsolete("AuthenticationManager is not supported. Methods will no-op or throw PlatformNotSupportedException.", DiagnosticId="SYSLIB0009", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("AuthenticationManager is not supported. Methods will no-op or throw PlatformNotSupportedException.", DiagnosticId="SYSLIB0009", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
@@ -188,14 +184,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Net/Authorization.xml b/xml/System.Net/Authorization.xml
index 4cd5397e9f4..1c86ab4bb5e 100644
--- a/xml/System.Net/Authorization.xml
+++ b/xml/System.Net/Authorization.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains an authentication message for an Internet server.</summary>
diff --git a/xml/System.Net/Cookie.xml b/xml/System.Net/Cookie.xml
index ed4a2ff59b8..7f0d7c562e0 100644
--- a/xml/System.Net/Cookie.xml
+++ b/xml/System.Net/Cookie.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -289,12 +285,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String">
           <Attributes>
@@ -398,12 +388,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String">
           <Attributes>
@@ -583,14 +567,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -813,12 +789,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net/CookieCollection.xml b/xml/System.Net/CookieCollection.xml
index 37e3bcfebf7..a3379d31d49 100644
--- a/xml/System.Net/CookieCollection.xml
+++ b/xml/System.Net/CookieCollection.xml
@@ -82,10 +82,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Net/CookieContainer.xml b/xml/System.Net/CookieContainer.xml
index 34b4f8c270d..0e9c24d9ac9 100644
--- a/xml/System.Net/CookieContainer.xml
+++ b/xml/System.Net/CookieContainer.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Net/CookieException.xml b/xml/System.Net/CookieException.xml
index b8224946a56..a22f6aaf715 100644
--- a/xml/System.Net/CookieException.xml
+++ b/xml/System.Net/CookieException.xml
@@ -199,10 +199,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -269,10 +265,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Net/CredentialCache.xml b/xml/System.Net/CredentialCache.xml
index 29832abcd2b..dde5b2509e3 100644
--- a/xml/System.Net/CredentialCache.xml
+++ b/xml/System.Net/CredentialCache.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides storage for multiple credentials.</summary>
@@ -694,12 +690,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -765,12 +755,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net/Dns.xml b/xml/System.Net/Dns.xml
index 28b921df986..61f3a73b5a5 100644
--- a/xml/System.Net/Dns.xml
+++ b/xml/System.Net/Dns.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides simple domain name resolution functionality.</summary>
diff --git a/xml/System.Net/DnsEndPoint.xml b/xml/System.Net/DnsEndPoint.xml
index 43b9f8e27a3..e439fdf9e99 100644
--- a/xml/System.Net/DnsEndPoint.xml
+++ b/xml/System.Net/DnsEndPoint.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a network endpoint as a host name or a string representation of an IP address and a port number.</summary>
@@ -297,12 +293,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net/DownloadDataCompletedEventArgs.xml b/xml/System.Net/DownloadDataCompletedEventArgs.xml
index e941942b3da..45f7017c379 100644
--- a/xml/System.Net/DownloadDataCompletedEventArgs.xml
+++ b/xml/System.Net/DownloadDataCompletedEventArgs.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Net.WebClient.DownloadDataCompleted" /> event.</summary>
diff --git a/xml/System.Net/DownloadStringCompletedEventArgs.xml b/xml/System.Net/DownloadStringCompletedEventArgs.xml
index c0ec3a30e9c..76856a75594 100644
--- a/xml/System.Net/DownloadStringCompletedEventArgs.xml
+++ b/xml/System.Net/DownloadStringCompletedEventArgs.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Net.WebClient.DownloadStringCompleted" /> event.</summary>
diff --git a/xml/System.Net/EndPoint.xml b/xml/System.Net/EndPoint.xml
index 0e45beec27d..e4bf55bda26 100644
--- a/xml/System.Net/EndPoint.xml
+++ b/xml/System.Net/EndPoint.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Net/FileWebRequest.xml b/xml/System.Net/FileWebRequest.xml
index f250c3c3970..25dec510952 100644
--- a/xml/System.Net/FileWebRequest.xml
+++ b/xml/System.Net/FileWebRequest.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -239,12 +235,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -315,12 +305,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -394,14 +378,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -523,14 +499,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -585,14 +553,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1237,14 +1197,6 @@ This method stores in the task it returns all non-usage exceptions that the meth
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Net/FileWebResponse.xml b/xml/System.Net/FileWebResponse.xml
index 48d9538642e..f0d157d8230 100644
--- a/xml/System.Net/FileWebResponse.xml
+++ b/xml/System.Net/FileWebResponse.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Net/FtpWebRequest.xml b/xml/System.Net/FtpWebRequest.xml
index e571e77ae6c..a105a130712 100644
--- a/xml/System.Net/FtpWebRequest.xml
+++ b/xml/System.Net/FtpWebRequest.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Implements a File Transfer Protocol (FTP) client.</summary>
@@ -376,14 +372,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509CertificateCollection</ReturnType>
@@ -900,12 +888,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Stream</ReturnType>
       </ReturnValue>
@@ -980,12 +962,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.WebResponse</ReturnType>
       </ReturnValue>
@@ -1065,12 +1041,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Stream</ReturnType>
       </ReturnValue>
@@ -1150,12 +1120,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.WebResponse</ReturnType>
       </ReturnValue>
@@ -1248,14 +1212,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.WebHeaderCollection</ReturnType>
@@ -1378,14 +1334,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1686,10 +1634,6 @@ The following code example displays this property value.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1760,10 +1704,6 @@ The following code example displays this property value.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.ServicePoint</ReturnType>
diff --git a/xml/System.Net/FtpWebResponse.xml b/xml/System.Net/FtpWebResponse.xml
index f1fbeb9e3a3..0ecccef52cb 100644
--- a/xml/System.Net/FtpWebResponse.xml
+++ b/xml/System.Net/FtpWebResponse.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates a File Transfer Protocol (FTP) server's response to a request.</summary>
@@ -410,12 +406,6 @@ This property is provided only for compatibility with other implementations of t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Stream</ReturnType>
       </ReturnValue>
@@ -486,10 +476,6 @@ This property is provided only for compatibility with other implementations of t
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.WebHeaderCollection</ReturnType>
@@ -608,10 +594,6 @@ This property is provided only for compatibility with other implementations of t
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Uri</ReturnType>
diff --git a/xml/System.Net/GlobalProxySelection.xml b/xml/System.Net/GlobalProxySelection.xml
index b02ed97780f..4ae956816a2 100644
--- a/xml/System.Net/GlobalProxySelection.xml
+++ b/xml/System.Net/GlobalProxySelection.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
       <AttributeName Language="C#">[System.Obsolete("This class has been deprecated. Please use WebRequest.DefaultWebProxy instead to access and set the global default proxy. Use 'null' instead of GetEmptyWebProxy. http://go.microsoft.com/fwlink/?linkid=14202")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("This class has been deprecated. Please use WebRequest.DefaultWebProxy instead to access and set the global default proxy. Use 'null' instead of GetEmptyWebProxy. http://go.microsoft.com/fwlink/?linkid=14202")&gt;]</AttributeName>
diff --git a/xml/System.Net/HttpDiagnosticsHttpWebRequestExtensions.xml b/xml/System.Net/HttpDiagnosticsHttpWebRequestExtensions.xml
index cb36fe31732..7a2448336f9 100644
--- a/xml/System.Net/HttpDiagnosticsHttpWebRequestExtensions.xml
+++ b/xml/System.Net/HttpDiagnosticsHttpWebRequestExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/System.Net/HttpListener+ExtendedProtectionSelector.xml b/xml/System.Net/HttpListener+ExtendedProtectionSelector.xml
index 92001c4fd6b..65015b51303 100644
--- a/xml/System.Net/HttpListener+ExtendedProtectionSelector.xml
+++ b/xml/System.Net/HttpListener+ExtendedProtectionSelector.xml
@@ -37,12 +37,6 @@
   <Base>
     <BaseTypeName>System.Delegate</BaseTypeName>
   </Base>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Parameters>
     <Parameter Name="request" Type="System.Net.HttpListenerRequest" />
   </Parameters>
diff --git a/xml/System.Net/HttpListener.xml b/xml/System.Net/HttpListener.xml
index ca8314ad27c..0b0d9df0431 100644
--- a/xml/System.Net/HttpListener.xml
+++ b/xml/System.Net/HttpListener.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a simple, programmatically controlled HTTP protocol listener. This class cannot be inherited.</summary>
@@ -282,14 +278,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.AuthenticationSchemeSelector</ReturnType>
@@ -361,12 +349,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -727,14 +709,6 @@ The following code example demonstrates calling the `Close` method:
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1149,14 +1123,6 @@ The following code example demonstrates calling the `Close` method:
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Net/HttpListenerBasicIdentity.xml b/xml/System.Net/HttpListenerBasicIdentity.xml
index 92be0243137..232b4e1aa1c 100644
--- a/xml/System.Net/HttpListenerBasicIdentity.xml
+++ b/xml/System.Net/HttpListenerBasicIdentity.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Holds the user name and password from a basic authentication request.</summary>
diff --git a/xml/System.Net/HttpListenerContext.xml b/xml/System.Net/HttpListenerContext.xml
index baffd619768..b0b2ff8cc6a 100644
--- a/xml/System.Net/HttpListenerContext.xml
+++ b/xml/System.Net/HttpListenerContext.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides access to the request and response objects used by the <see cref="T:System.Net.HttpListener" /> class. This class cannot be inherited.</summary>
@@ -333,10 +329,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
@@ -546,10 +538,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Principal.IPrincipal</ReturnType>
diff --git a/xml/System.Net/HttpListenerException.xml b/xml/System.Net/HttpListenerException.xml
index f28011ad11d..75abca277ee 100644
--- a/xml/System.Net/HttpListenerException.xml
+++ b/xml/System.Net/HttpListenerException.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Net/HttpListenerPrefixCollection.xml b/xml/System.Net/HttpListenerPrefixCollection.xml
index 7baf1937eaa..22a52516d71 100644
--- a/xml/System.Net/HttpListenerPrefixCollection.xml
+++ b/xml/System.Net/HttpListenerPrefixCollection.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the collection used to store Uniform Resource Identifier (URI) prefixes for <see cref="T:System.Net.HttpListener" /> objects.</summary>
diff --git a/xml/System.Net/HttpListenerRequest.xml b/xml/System.Net/HttpListenerRequest.xml
index 455e079dbaa..221229dbbe5 100644
--- a/xml/System.Net/HttpListenerRequest.xml
+++ b/xml/System.Net/HttpListenerRequest.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Describes an incoming HTTP request to an <see cref="T:System.Net.HttpListener" /> object. This class cannot be inherited.</summary>
@@ -172,12 +168,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -407,10 +397,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -584,12 +570,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509Certificate2</ReturnType>
       </ReturnValue>
@@ -1398,10 +1378,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1569,10 +1545,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1696,10 +1668,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1834,10 +1802,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Uri</ReturnType>
@@ -1908,10 +1872,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Net/HttpListenerResponse.xml b/xml/System.Net/HttpListenerResponse.xml
index a3fe7e7c7d3..44f36ee8ccd 100644
--- a/xml/System.Net/HttpListenerResponse.xml
+++ b/xml/System.Net/HttpListenerResponse.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a response to a request being handled by an <see cref="T:System.Net.HttpListener" /> object.</summary>
@@ -515,14 +511,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -663,14 +651,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1193,14 +1173,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Net/HttpVersion.xml b/xml/System.Net/HttpVersion.xml
index 793709b1324..3a95f7a05c4 100644
--- a/xml/System.Net/HttpVersion.xml
+++ b/xml/System.Net/HttpVersion.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the HTTP version numbers that are supported by the <see cref="T:System.Net.HttpWebRequest" /> and <see cref="T:System.Net.HttpWebResponse" /> classes.</summary>
diff --git a/xml/System.Net/HttpWebRequest.xml b/xml/System.Net/HttpWebRequest.xml
index daa865218cb..4fcfc42fc3b 100644
--- a/xml/System.Net/HttpWebRequest.xml
+++ b/xml/System.Net/HttpWebRequest.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -253,10 +249,6 @@ Both <xref:System.Net.HttpWebRequest> constructors are obsolete and should not b
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
           <AttributeName Language="C#">[System.Obsolete("Serialization is obsoleted for this type.  http://go.microsoft.com/fwlink/?linkid=14202")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Serialization is obsoleted for this type.  http://go.microsoft.com/fwlink/?linkid=14202")&gt;]</AttributeName>
@@ -857,12 +849,6 @@ Both <xref:System.Net.HttpWebRequest> constructors are obsolete and should not b
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -951,12 +937,6 @@ Both <xref:System.Net.HttpWebRequest> constructors are obsolete and should not b
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1047,12 +1027,6 @@ Both <xref:System.Net.HttpWebRequest> constructors are obsolete and should not b
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1147,12 +1121,6 @@ Both <xref:System.Net.HttpWebRequest> constructors are obsolete and should not b
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1254,10 +1222,6 @@ Both <xref:System.Net.HttpWebRequest> constructors are obsolete and should not b
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1777,14 +1741,6 @@ Both <xref:System.Net.HttpWebRequest> constructors are obsolete and should not b
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509CertificateCollection</ReturnType>
@@ -2685,12 +2641,6 @@ Both <xref:System.Net.HttpWebRequest> constructors are obsolete and should not b
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Stream</ReturnType>
       </ReturnValue>
@@ -2774,12 +2724,6 @@ Both <xref:System.Net.HttpWebRequest> constructors are obsolete and should not b
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Stream</ReturnType>
       </ReturnValue>
@@ -2871,12 +2815,6 @@ Both <xref:System.Net.HttpWebRequest> constructors are obsolete and should not b
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.WebResponse</ReturnType>
       </ReturnValue>
@@ -3061,10 +2999,6 @@ The GetHashCode method returns a hash code of the web request. This value can be
           <AttributeName Language="C#">[System.Obsolete("Serialization has been deprecated for HttpWebRequest.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Serialization has been deprecated for HttpWebRequest.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2">
           <AttributeName Language="C#">[System.Obsolete("Serialization is obsoleted for this type.  http://go.microsoft.com/fwlink/?linkid=14202")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Serialization is obsoleted for this type.  http://go.microsoft.com/fwlink/?linkid=14202")&gt;]</AttributeName>
@@ -3136,12 +3070,6 @@ The GetHashCode method returns a hash code of the web request. This value can be
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Stream</ReturnType>
       </ReturnValue>
@@ -3238,12 +3166,6 @@ The GetHashCode method returns a hash code of the web request. This value can be
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Stream</ReturnType>
       </ReturnValue>
@@ -3347,12 +3269,6 @@ The GetHashCode method returns a hash code of the web request. This value can be
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.WebResponse</ReturnType>
       </ReturnValue>
@@ -3535,14 +3451,6 @@ The GetHashCode method returns a hash code of the web request. This value can be
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -3635,14 +3543,6 @@ The GetHashCode method returns a hash code of the web request. This value can be
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -4082,14 +3982,6 @@ The GetHashCode method returns a hash code of the web request. This value can be
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -4364,14 +4256,6 @@ The GetHashCode method returns a hash code of the web request. This value can be
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Version</ReturnType>
@@ -4675,10 +4559,6 @@ The GetHashCode method returns a hash code of the web request. This value can be
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -4871,10 +4751,6 @@ The GetHashCode method returns a hash code of the web request. This value can be
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Net/HttpWebResponse.xml b/xml/System.Net/HttpWebResponse.xml
index d1b780c4dd6..a7bfa392623 100644
--- a/xml/System.Net/HttpWebResponse.xml
+++ b/xml/System.Net/HttpWebResponse.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -297,10 +293,6 @@ The contents of the response from the Internet resource are returned as a <xref:
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Net/IAuthenticationModule.xml b/xml/System.Net/IAuthenticationModule.xml
index 626c2fb67f4..0ac32eb479b 100644
--- a/xml/System.Net/IAuthenticationModule.xml
+++ b/xml/System.Net/IAuthenticationModule.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Net.Requests" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides the base authentication interface for Web client authentication modules.</summary>
     <remarks>
diff --git a/xml/System.Net/ICredentialPolicy.xml b/xml/System.Net/ICredentialPolicy.xml
index 34ae9e7d176..4063f633af4 100644
--- a/xml/System.Net/ICredentialPolicy.xml
+++ b/xml/System.Net/ICredentialPolicy.xml
@@ -36,12 +36,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Net.Requests" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Defines the credential policy to be used for resource requests that are made using <see cref="T:System.Net.WebRequest" /> and its derived classes.</summary>
     <remarks>
diff --git a/xml/System.Net/ICredentials.xml b/xml/System.Net/ICredentials.xml
index 60b93f15136..0b78f5c698f 100644
--- a/xml/System.Net/ICredentials.xml
+++ b/xml/System.Net/ICredentials.xml
@@ -46,12 +46,6 @@
     <TypeForwarding From="System.Net" FromVersion="4.0.0.0" To="System" ToVersion="4.0.0.0" FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides the base authentication interface for retrieving credentials for Web client authentication.</summary>
     <remarks>
diff --git a/xml/System.Net/ICredentialsByHost.xml b/xml/System.Net/ICredentialsByHost.xml
index 60ac6a9e9fb..4108fa56efc 100644
--- a/xml/System.Net/ICredentialsByHost.xml
+++ b/xml/System.Net/ICredentialsByHost.xml
@@ -39,12 +39,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Net.Primitives" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides the interface for retrieving credentials for a host, port, and authentication type.</summary>
     <remarks>
diff --git a/xml/System.Net/IPAddress.xml b/xml/System.Net/IPAddress.xml
index 4d3c44fe910..5b6640763a4 100644
--- a/xml/System.Net/IPAddress.xml
+++ b/xml/System.Net/IPAddress.xml
@@ -74,10 +74,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -258,12 +254,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="address" Type="System.ReadOnlySpan&lt;System.Byte&gt;" Index="0" FrameworkAlternate="netcore-2.1;netcore-2.2;netcore-3.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0" />
       </Parameters>
@@ -375,12 +365,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="address" Type="System.ReadOnlySpan&lt;System.Byte&gt;" Index="0" FrameworkAlternate="netcore-2.1;netcore-2.2;netcore-3.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0" />
         <Parameter Name="scopeid" Type="System.Int64" Index="1" FrameworkAlternate="netcore-2.1;netcore-2.2;netcore-3.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0" />
@@ -693,10 +677,6 @@
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -2109,12 +2089,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.IPAddress</ReturnType>
       </ReturnValue>
@@ -2593,12 +2567,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2643,12 +2611,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2700,12 +2662,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2790,12 +2746,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2853,12 +2803,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net/IPEndPoint.xml b/xml/System.Net/IPEndPoint.xml
index 6954692b2f5..d4c03600f34 100644
--- a/xml/System.Net/IPEndPoint.xml
+++ b/xml/System.Net/IPEndPoint.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -441,12 +437,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -684,12 +674,6 @@ Literal IPv6 addresses require to be enclosed in square brackets [] when passing
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.IPEndPoint</ReturnType>
       </ReturnValue>
@@ -979,12 +963,6 @@ Literal IPv6 addresses require to be enclosed in square brackets [] when passing
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net/IPHostEntry.xml b/xml/System.Net/IPHostEntry.xml
index 531cafab666..69fbe9f24da 100644
--- a/xml/System.Net/IPHostEntry.xml
+++ b/xml/System.Net/IPHostEntry.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a container class for Internet host address information.</summary>
diff --git a/xml/System.Net/IPNetwork.xml b/xml/System.Net/IPNetwork.xml
index d7040e16e26..aaaf99a2e7b 100644
--- a/xml/System.Net/IPNetwork.xml
+++ b/xml/System.Net/IPNetwork.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="baseAddress" Type="System.Net.IPAddress" />
         <Parameter Name="prefixLength" Type="System.Int32" />
@@ -100,10 +94,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.IPAddress</ReturnType>
@@ -127,12 +117,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -192,12 +176,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -342,12 +320,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.IPNetwork</ReturnType>
       </ReturnValue>
@@ -644,12 +616,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -760,12 +726,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net/IWebProxy.xml b/xml/System.Net/IWebProxy.xml
index 4203f16c7ad..4b6905724aa 100644
--- a/xml/System.Net/IWebProxy.xml
+++ b/xml/System.Net/IWebProxy.xml
@@ -40,12 +40,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Net.Primitives" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides the base interface for implementation of proxy access for the <see cref="T:System.Net.Http.HttpClient" /> class.</summary>
     <remarks>
@@ -156,12 +150,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Uri</ReturnType>
       </ReturnValue>
@@ -224,12 +212,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net/IWebProxyScript.xml b/xml/System.Net/IWebProxyScript.xml
index 8999daec7e1..6afbfaa79bf 100644
--- a/xml/System.Net/IWebProxyScript.xml
+++ b/xml/System.Net/IWebProxyScript.xml
@@ -36,12 +36,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Net.WebProxy" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides the base interface to load and execute scripts for automatic proxy detection.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Net/IWebRequestCreate.xml b/xml/System.Net/IWebRequestCreate.xml
index c03e7dc7173..55bfe85afd8 100644
--- a/xml/System.Net/IWebRequestCreate.xml
+++ b/xml/System.Net/IWebRequestCreate.xml
@@ -44,12 +44,6 @@
     <TypeForwarding From="System.Net" FromVersion="4.0.0.0" To="System" ToVersion="4.0.0.0" FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides the base interface for creating <see cref="T:System.Net.WebRequest" /> instances.</summary>
     <remarks>
diff --git a/xml/System.Net/NetworkCredential.xml b/xml/System.Net/NetworkCredential.xml
index 872db3610c5..2d5317fed67 100644
--- a/xml/System.Net/NetworkCredential.xml
+++ b/xml/System.Net/NetworkCredential.xml
@@ -66,10 +66,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides credentials for password-based authentication schemes such as basic, digest, NTLM, and Kerberos authentication.</summary>
@@ -204,10 +200,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="userName" Type="System.String" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
@@ -270,12 +262,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="userName" Type="System.String" />
         <Parameter Name="password" Type="System.String" />
@@ -341,10 +327,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="userName" Type="System.String" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
@@ -409,12 +391,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="userName" Type="System.String" />
         <Parameter Name="password" Type="System.String" />
@@ -548,12 +524,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.NetworkCredential</ReturnType>
       </ReturnValue>
@@ -623,12 +593,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.NetworkCredential</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net/OpenReadCompletedEventArgs.xml b/xml/System.Net/OpenReadCompletedEventArgs.xml
index d2d3c41f4b0..dbddde0fba7 100644
--- a/xml/System.Net/OpenReadCompletedEventArgs.xml
+++ b/xml/System.Net/OpenReadCompletedEventArgs.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Net.WebClient.OpenReadCompleted" /> event.</summary>
diff --git a/xml/System.Net/OpenWriteCompletedEventArgs.xml b/xml/System.Net/OpenWriteCompletedEventArgs.xml
index 7b7f5c2cce1..3ff903dcc1f 100644
--- a/xml/System.Net/OpenWriteCompletedEventArgs.xml
+++ b/xml/System.Net/OpenWriteCompletedEventArgs.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Net.WebClient.OpenWriteCompleted" /> event.</summary>
diff --git a/xml/System.Net/ProtocolViolationException.xml b/xml/System.Net/ProtocolViolationException.xml
index 0b5f2e04e9b..503b83bed43 100644
--- a/xml/System.Net/ProtocolViolationException.xml
+++ b/xml/System.Net/ProtocolViolationException.xml
@@ -172,10 +172,6 @@
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -240,10 +236,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -310,10 +302,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Net/ServicePoint.xml b/xml/System.Net/ServicePoint.xml
index 6b2db519f48..732897b19c8 100644
--- a/xml/System.Net/ServicePoint.xml
+++ b/xml/System.Net/ServicePoint.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides connection management for HTTP connections.</summary>
@@ -179,14 +175,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -251,10 +239,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509Certificate</ReturnType>
@@ -325,10 +309,6 @@ Although a <xref:System.Net.ServicePoint> object can make multiple connections t
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509Certificate</ReturnType>
diff --git a/xml/System.Net/ServicePointManager.xml b/xml/System.Net/ServicePointManager.xml
index d9fac771ead..b50b2a6133f 100644
--- a/xml/System.Net/ServicePointManager.xml
+++ b/xml/System.Net/ServicePointManager.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-9.0">
       <AttributeName Language="C#">[System.Obsolete("WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead. Settings on ServicePointManager no longer affect SslStream or HttpClient.", DiagnosticId="SYSLIB0014", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead. Settings on ServicePointManager no longer affect SslStream or HttpClient.", DiagnosticId="SYSLIB0014", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
@@ -1152,14 +1148,6 @@ For versions of the .NET Framework through the .NET Framework 4.6.2, no default
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Security.RemoteCertificateValidationCallback</ReturnType>
diff --git a/xml/System.Net/SocketAddress.xml b/xml/System.Net/SocketAddress.xml
index cbe1e2aeaa7..f44bf53abb2 100644
--- a/xml/System.Net/SocketAddress.xml
+++ b/xml/System.Net/SocketAddress.xml
@@ -252,12 +252,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -308,12 +302,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -618,12 +606,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net/TransportContext.xml b/xml/System.Net/TransportContext.xml
index 992bda6c389..3565031f1ad 100644
--- a/xml/System.Net/TransportContext.xml
+++ b/xml/System.Net/TransportContext.xml
@@ -137,12 +137,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Authentication.ExtendedProtection.ChannelBinding</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net/UploadDataCompletedEventArgs.xml b/xml/System.Net/UploadDataCompletedEventArgs.xml
index a8ac7b706ea..98593f27b4f 100644
--- a/xml/System.Net/UploadDataCompletedEventArgs.xml
+++ b/xml/System.Net/UploadDataCompletedEventArgs.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Net.WebClient.UploadDataCompleted" /> event.</summary>
diff --git a/xml/System.Net/UploadFileCompletedEventArgs.xml b/xml/System.Net/UploadFileCompletedEventArgs.xml
index 50040da2ee4..6a479b1d18c 100644
--- a/xml/System.Net/UploadFileCompletedEventArgs.xml
+++ b/xml/System.Net/UploadFileCompletedEventArgs.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Net.WebClient.UploadFileCompleted" /> event.</summary>
diff --git a/xml/System.Net/UploadStringCompletedEventArgs.xml b/xml/System.Net/UploadStringCompletedEventArgs.xml
index bc293eaca89..e2bc502c18b 100644
--- a/xml/System.Net/UploadStringCompletedEventArgs.xml
+++ b/xml/System.Net/UploadStringCompletedEventArgs.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Net.WebClient.UploadStringCompleted" /> event.</summary>
diff --git a/xml/System.Net/UploadValuesCompletedEventArgs.xml b/xml/System.Net/UploadValuesCompletedEventArgs.xml
index 2fe4259d23a..11b09495299 100644
--- a/xml/System.Net/UploadValuesCompletedEventArgs.xml
+++ b/xml/System.Net/UploadValuesCompletedEventArgs.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Net.WebClient.UploadValuesCompleted" /> event.</summary>
diff --git a/xml/System.Net/WebClient.xml b/xml/System.Net/WebClient.xml
index 21d6b5b6dda..ce458e983d8 100644
--- a/xml/System.Net/WebClient.xml
+++ b/xml/System.Net/WebClient.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -412,14 +408,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -537,14 +525,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -951,14 +931,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.DownloadDataCompletedEventHandler</ReturnType>
@@ -1573,14 +1545,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.AsyncCompletedEventHandler</ReturnType>
@@ -1835,14 +1799,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.DownloadProgressChangedEventHandler</ReturnType>
@@ -2263,14 +2219,6 @@ internal class MyWebClient : WebClientProtocol
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.DownloadStringCompletedEventHandler</ReturnType>
@@ -4100,14 +4048,6 @@ internal class MyWebClient : WebClientProtocol
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.OpenReadCompletedEventHandler</ReturnType>
@@ -4852,12 +4792,6 @@ internal class MyWebClient : WebClientProtocol
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4948,14 +4882,6 @@ internal class MyWebClient : WebClientProtocol
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.OpenWriteCompletedEventHandler</ReturnType>
@@ -5390,14 +5316,6 @@ internal class MyWebClient : WebClientProtocol
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.IWebProxy</ReturnType>
@@ -5536,10 +5454,6 @@ internal class MyWebClient : WebClientProtocol
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.WebHeaderCollection</ReturnType>
@@ -6270,14 +6184,6 @@ internal class MyWebClient : WebClientProtocol
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.UploadDataCompletedEventHandler</ReturnType>
@@ -7457,14 +7363,6 @@ internal class MyWebClient : WebClientProtocol
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.UploadFileCompletedEventHandler</ReturnType>
@@ -7949,14 +7847,6 @@ internal class MyWebClient : WebClientProtocol
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.UploadProgressChangedEventHandler</ReturnType>
@@ -8688,14 +8578,6 @@ internal class MyWebClient : WebClientProtocol
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.UploadStringCompletedEventHandler</ReturnType>
@@ -9853,14 +9735,6 @@ internal class MyWebClient : WebClientProtocol
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.UploadValuesCompletedEventHandler</ReturnType>
@@ -10404,14 +10278,6 @@ internal class MyWebClient : WebClientProtocol
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.WriteStreamClosedEventHandler</ReturnType>
diff --git a/xml/System.Net/WebException.xml b/xml/System.Net/WebException.xml
index 003af32eeec..a2799afc0ec 100644
--- a/xml/System.Net/WebException.xml
+++ b/xml/System.Net/WebException.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -270,10 +266,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="serializationInfo" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
@@ -556,10 +548,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Net/WebHeaderCollection.xml b/xml/System.Net/WebHeaderCollection.xml
index 04ffae17585..7a41a51676f 100644
--- a/xml/System.Net/WebHeaderCollection.xml
+++ b/xml/System.Net/WebHeaderCollection.xml
@@ -82,10 +82,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -398,12 +394,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -471,12 +461,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -902,12 +886,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -974,12 +952,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1587,14 +1559,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1653,14 +1617,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1813,12 +1769,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2079,12 +2029,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2152,12 +2096,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net/WebProxy.xml b/xml/System.Net/WebProxy.xml
index 47ffbb4e383..04da27f7c64 100644
--- a/xml/System.Net/WebProxy.xml
+++ b/xml/System.Net/WebProxy.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -330,10 +326,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="serializationInfo" Type="System.Runtime.Serialization.SerializationInfo" />
@@ -446,12 +438,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="Host" Type="System.String" />
         <Parameter Name="Port" Type="System.Int32" />
@@ -944,10 +930,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.ArrayList</ReturnType>
@@ -1001,14 +983,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String[]</ReturnType>
@@ -1201,10 +1175,6 @@
           <AttributeName Language="C#">[System.Obsolete("WebProxy.GetDefaultProxy has been deprecated. Use the proxy selected for you by default.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("WebProxy.GetDefaultProxy has been deprecated. Use the proxy selected for you by default.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
           <AttributeName Language="C#">[System.Obsolete("This method has been deprecated. Please use the proxy selected for you by default. http://go.microsoft.com/fwlink/?linkid=14202")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This method has been deprecated. Please use the proxy selected for you by default. http://go.microsoft.com/fwlink/?linkid=14202")&gt;]</AttributeName>
@@ -1271,12 +1241,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1333,12 +1297,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Uri</ReturnType>
       </ReturnValue>
@@ -1406,12 +1364,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net/WebRequest.xml b/xml/System.Net/WebRequest.xml
index de74efe689f..be6741cf91e 100644
--- a/xml/System.Net/WebRequest.xml
+++ b/xml/System.Net/WebRequest.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -424,12 +420,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -510,12 +500,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Net</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -599,14 +583,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -692,14 +668,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -841,14 +809,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1399,14 +1359,6 @@ This property allows an application to determine which <xref:System.Net.IWebRequ
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.ICredentials</ReturnType>
@@ -1482,14 +1434,6 @@ This property allows an application to determine which <xref:System.Net.IWebRequ
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.Cache.RequestCachePolicy</ReturnType>
@@ -1571,14 +1515,6 @@ This property allows an application to determine which <xref:System.Net.IWebRequ
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.IWebProxy</ReturnType>
@@ -2450,14 +2386,6 @@ This property allows an application to determine which <xref:System.Net.IWebRequ
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Net.IWebProxy</ReturnType>
diff --git a/xml/System.Net/WebRequestMethods.xml b/xml/System.Net/WebRequestMethods.xml
index 2abcdf1b87f..d883ba5c4f8 100644
--- a/xml/System.Net/WebRequestMethods.xml
+++ b/xml/System.Net/WebRequestMethods.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Container class for <see cref="T:System.Net.WebRequestMethods.Ftp" />, <see cref="T:System.Net.WebRequestMethods.File" />, and <see cref="T:System.Net.WebRequestMethods.Http" /> classes. This class cannot be inherited.</summary>
diff --git a/xml/System.Net/WebResponse.xml b/xml/System.Net/WebResponse.xml
index b3431a6f2a7..18129ec3090 100644
--- a/xml/System.Net/WebResponse.xml
+++ b/xml/System.Net/WebResponse.xml
@@ -66,10 +66,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Net/WebUtility.xml b/xml/System.Net/WebUtility.xml
index 7e518392ed0..e01055cde7c 100644
--- a/xml/System.Net/WebUtility.xml
+++ b/xml/System.Net/WebUtility.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods for encoding and decoding URLs when processing Web requests.</summary>
@@ -184,12 +180,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -329,12 +319,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Net/WriteStreamClosedEventArgs.xml b/xml/System.Net/WriteStreamClosedEventArgs.xml
index 4c0f01df381..8cfb21083b4 100644
--- a/xml/System.Net/WriteStreamClosedEventArgs.xml
+++ b/xml/System.Net/WriteStreamClosedEventArgs.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Net.WebClient.WriteStreamClosed" /> event.</summary>
diff --git a/xml/System.Numerics.Tensors/IReadOnlyTensor`2.xml b/xml/System.Numerics.Tensors/IReadOnlyTensor`2.xml
index 948965d6930..527f6b68b42 100644
--- a/xml/System.Numerics.Tensors/IReadOnlyTensor`2.xml
+++ b/xml/System.Numerics.Tensors/IReadOnlyTensor`2.xml
@@ -263,10 +263,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TSelf</ReturnType>
@@ -351,12 +347,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>T</ReturnType>
         <Attributes>
diff --git a/xml/System.Numerics.Tensors/ITensor`2.xml b/xml/System.Numerics.Tensors/ITensor`2.xml
index 15a33dc9e73..773fbe1f6e6 100644
--- a/xml/System.Numerics.Tensors/ITensor`2.xml
+++ b/xml/System.Numerics.Tensors/ITensor`2.xml
@@ -446,12 +446,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -478,12 +472,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Ref">
         <ReturnType>T</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Numerics.Tensors/ReadOnlyTensorSpan`1+Enumerator.xml b/xml/System.Numerics.Tensors/ReadOnlyTensorSpan`1+Enumerator.xml
index 8886e1c5889..ccc6ba27f20 100644
--- a/xml/System.Numerics.Tensors/ReadOnlyTensorSpan`1+Enumerator.xml
+++ b/xml/System.Numerics.Tensors/ReadOnlyTensorSpan`1+Enumerator.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Enumerates the elements of a <see cref="T:System.Numerics.Tensors.ReadOnlyTensorSpan`1" />.</summary>
diff --git a/xml/System.Numerics.Tensors/ReadOnlyTensorSpan`1.xml b/xml/System.Numerics.Tensors/ReadOnlyTensorSpan`1.xml
index d823f60d7e4..cd144076fd8 100644
--- a/xml/System.Numerics.Tensors/ReadOnlyTensorSpan`1.xml
+++ b/xml/System.Numerics.Tensors/ReadOnlyTensorSpan`1.xml
@@ -70,12 +70,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="array" Type="System.Array" />
       </Parameters>
@@ -539,12 +533,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.ReadOnlyTensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -680,10 +668,6 @@
           <AttributeName Language="C#">[System.Obsolete("Equals() on ReadOnlyTensorSpan will always throw an exception. Use the equality operator instead.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Equals() on ReadOnlyTensorSpan will always throw an exception. Use the equality operator instead.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -839,10 +823,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>T</ReturnType>
@@ -1347,12 +1327,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Numerics.Tensors/Tensor.xml b/xml/System.Numerics.Tensors/Tensor.xml
index 24258a28fb4..0978bd28108 100644
--- a/xml/System.Numerics.Tensors/Tensor.xml
+++ b/xml/System.Numerics.Tensors/Tensor.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -98,12 +94,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -229,12 +219,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -360,12 +344,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -491,12 +469,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -922,12 +894,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1053,12 +1019,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1184,12 +1144,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1263,12 +1217,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.ReadOnlyTensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1333,12 +1281,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1455,12 +1397,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1707,12 +1643,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -2138,12 +2068,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -2448,12 +2372,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -2579,12 +2497,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -2834,12 +2746,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -3130,12 +3036,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -3377,12 +3277,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.Tensor&lt;T&gt;</ReturnType>
         <Attributes>
@@ -3454,12 +3348,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3564,12 +3452,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3676,12 +3558,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -3807,12 +3683,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -3939,12 +3809,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -4044,8 +3908,8 @@
       </Parameters>
       <Docs>
         <typeparam name="T">To be added.</typeparam>
-        <param name="tensors">The tensors must have the same shape, except in the dimension corresponding to axis (the first, by default).</param>
         <param name="dimension">The axis along which the tensors will be joined. If axis is -1, arrays are flattened before use. Default is 0.</param>
+        <param name="tensors">The tensors must have the same shape, except in the dimension corresponding to axis (the first, by default).</param>
         <summary>
             Join a sequence of tensors along an existing axis.
             </summary>
@@ -4065,12 +3929,6 @@
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         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -4116,8 +3974,8 @@
       </Parameters>
       <Docs>
         <typeparam name="T">To be added.</typeparam>
-        <param name="tensors">The tensors must have the same shape, except in the dimension corresponding to axis (the first, by default).</param>
         <param name="dimension">The axis along which the tensors will be joined. If axis is -1, arrays are flattened before use. Default is 0.</param>
+        <param name="tensors">The tensors must have the same shape, except in the dimension corresponding to axis (the first, by default).</param>
         <param name="destination" />
         <summary>
             Join a sequence of tensors along an existing axis.
@@ -4740,12 +4598,6 @@
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         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -4969,12 +4821,6 @@
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@@ -5100,12 +4946,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -5244,12 +5084,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -5401,12 +5235,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -5488,12 +5316,6 @@
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       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.Tensor&lt;T&gt;</ReturnType>
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@@ -5598,12 +5420,6 @@
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       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.Tensor&lt;T&gt;</ReturnType>
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@@ -5719,12 +5535,6 @@
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       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.Tensor&lt;T&gt;</ReturnType>
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@@ -5795,12 +5605,6 @@
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       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.Tensor&lt;T&gt;</ReturnType>
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@@ -5874,12 +5678,6 @@
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@@ -5990,12 +5788,6 @@
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@@ -6105,12 +5897,6 @@
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@@ -6163,12 +5949,6 @@
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@@ -6283,12 +6063,6 @@
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@@ -6609,12 +6383,6 @@
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@@ -7057,12 +6825,6 @@
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@@ -7146,12 +6908,6 @@
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@@ -7227,12 +6983,6 @@
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@@ -7352,12 +7102,6 @@
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@@ -7529,12 +7273,6 @@
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@@ -7660,12 +7398,6 @@
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@@ -7789,12 +7521,6 @@
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@@ -7916,12 +7642,6 @@
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@@ -8043,12 +7763,6 @@
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@@ -8170,12 +7884,6 @@
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@@ -8246,12 +7954,6 @@
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@@ -8318,12 +8020,6 @@
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@@ -8391,12 +8087,6 @@
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@@ -8487,12 +8177,6 @@
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@@ -8624,12 +8308,6 @@
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@@ -8701,12 +8379,6 @@
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@@ -8932,12 +8604,6 @@
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@@ -9024,12 +8690,6 @@
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@@ -9196,12 +8850,6 @@
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@@ -9378,12 +9026,6 @@
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@@ -9536,8 +9178,8 @@
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-        <param name="y">First <see cref="T:System.Numerics.Tensors.ReadOnlyTensorSpan`1" /> to compare.</param>
         <param name="x">Value to compare against.</param>
+        <param name="y">First <see cref="T:System.Numerics.Tensors.ReadOnlyTensorSpan`1" /> to compare.</param>
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             Compares the elements of two <see cref="T:System.Numerics.Tensors.ReadOnlyTensorSpan`1" /> to see if any elements of <paramref name="y" /> are greater than <paramref name="x" />.
             If the shapes are not the same, the tensors are broadcasted to the smallest broadcastable size before they are compared.
@@ -9749,12 +9391,6 @@
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@@ -9841,12 +9477,6 @@
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@@ -9927,12 +9557,6 @@
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         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;System.Boolean&gt;</ReturnType>
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@@ -10013,12 +9637,6 @@
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@@ -10195,12 +9813,6 @@
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@@ -10353,8 +9965,8 @@
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       <Docs>
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-        <param name="y">First <see cref="T:System.Numerics.Tensors.ReadOnlyTensorSpan`1" /> to compare.</param>
         <param name="x">Value to compare against.</param>
+        <param name="y">First <see cref="T:System.Numerics.Tensors.ReadOnlyTensorSpan`1" /> to compare.</param>
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             Compares the elements of two <see cref="T:System.Numerics.Tensors.ReadOnlyTensorSpan`1" /> to see if any elements of <paramref name="y" /> are greater than <paramref name="x" />.
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@@ -10443,12 +10055,6 @@
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@@ -10707,12 +10313,6 @@
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@@ -11009,12 +10609,6 @@
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         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;System.Int32&gt;</ReturnType>
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@@ -11078,12 +10672,6 @@
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@@ -11132,12 +10720,6 @@
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       <ReturnValue>
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@@ -11186,12 +10768,6 @@
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@@ -11240,12 +10816,6 @@
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       <ReturnValue>
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@@ -11348,12 +10918,6 @@
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         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -11616,12 +11180,6 @@
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         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;System.Boolean&gt;</ReturnType>
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@@ -11708,12 +11266,6 @@
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         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;System.Boolean&gt;</ReturnType>
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@@ -11794,12 +11346,6 @@
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@@ -11880,12 +11426,6 @@
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@@ -12038,8 +11578,8 @@
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       <Docs>
         <typeparam name="T">To be added.</typeparam>
-        <param name="y">First value to compare.</param>
         <param name="x">Second value to compare against.</param>
+        <param name="y">First value to compare.</param>
         <summary>
             Compares the elements of two <see cref="T:System.Numerics.Tensors.ReadOnlyTensorSpan`1" /> to see if all elements of <paramref name="y" /> are less than <paramref name="x" />.
             If the shapes are not the same, the tensors are broadcasted to the smallest broadcastable size before they are compared.
@@ -12062,12 +11602,6 @@
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@@ -12433,12 +11967,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;System.Boolean&gt;</ReturnType>
         <Attributes>
@@ -12525,12 +12053,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;System.Boolean&gt;</ReturnType>
         <Attributes>
@@ -12611,12 +12133,6 @@
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@@ -12697,12 +12213,6 @@
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       <ReturnValue>
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@@ -12855,8 +12365,8 @@
       </Parameters>
       <Docs>
         <typeparam name="T">To be added.</typeparam>
-        <param name="y">First value to compare.</param>
         <param name="x">Second value to compare against.</param>
+        <param name="y">First value to compare.</param>
         <summary>
             Compares the elements of two <see cref="T:System.Numerics.Tensors.ReadOnlyTensorSpan`1" /> to see if all elements of <paramref name="y" /> are less than <paramref name="x" />.
             If the shapes are not the same, the tensors are broadcasted to the smallest broadcastable size before they are compared.
@@ -12879,12 +12389,6 @@
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       <ReturnValue>
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@@ -13176,12 +12680,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -13307,12 +12805,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -13532,12 +13024,6 @@
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       <ReturnValue RefType="Readonly">
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@@ -13663,12 +13149,6 @@
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       <ReturnValue RefType="Readonly">
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@@ -13794,12 +13274,6 @@
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@@ -13925,12 +13399,6 @@
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@@ -14056,12 +13524,6 @@
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@@ -14304,12 +13766,6 @@
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@@ -14646,12 +14102,6 @@
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@@ -14988,12 +14438,6 @@
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@@ -15330,12 +14774,6 @@
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@@ -15672,12 +15110,6 @@
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@@ -16014,12 +15446,6 @@
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@@ -16356,12 +15782,6 @@
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@@ -16698,12 +16118,6 @@
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@@ -17225,12 +16639,6 @@
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@@ -17408,12 +16816,6 @@
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@@ -17593,12 +16995,6 @@
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@@ -17837,12 +17233,6 @@
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@@ -18194,12 +17584,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -18321,12 +17705,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -18398,12 +17776,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.ReadOnlyTensorSpan&lt;T&gt;</ReturnType>
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@@ -18535,12 +17907,6 @@
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       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -18662,12 +18028,6 @@
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       <ReturnValue>
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@@ -18789,12 +18149,6 @@
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@@ -18903,12 +18257,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -19030,12 +18378,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -19160,12 +18502,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -19220,8 +18556,8 @@
       <Docs>
         <typeparam name="T">To be added.</typeparam>
         <param name="x">The tensor, represented as a span.</param>
-        <param name="destination">The destination tensor, represented as a span.</param>
         <param name="n">The degree of the root to be computed, represented as a scalar.</param>
+        <param name="destination">The destination tensor, represented as a span.</param>
         <summary>Computes the element-wise n-th root of the values in the specified tensor.</summary>
         <returns>To be added.</returns>
         <remarks>To be added.</remarks>
@@ -19292,12 +18628,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -19425,12 +18755,6 @@
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         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -19659,12 +18983,6 @@
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         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -19790,12 +19108,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -19869,12 +19181,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -19948,12 +19254,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -20029,12 +19329,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -20102,12 +19396,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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       <ReturnValue>
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@@ -20242,12 +19530,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -20386,12 +19668,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -20515,12 +19791,6 @@
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         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -20644,12 +19914,6 @@
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         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -20771,12 +20035,6 @@
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         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -20898,12 +20156,6 @@
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         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -21085,12 +20337,6 @@
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         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -21164,12 +20410,6 @@
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       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.ReadOnlyTensorSpan&lt;T&gt;</ReturnType>
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@@ -21256,12 +20496,6 @@
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         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -21310,12 +20544,6 @@
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       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.ReadOnlyTensorSpan&lt;T&gt;</ReturnType>
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@@ -21408,12 +20636,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -21518,12 +20740,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -21627,8 +20843,8 @@
       </Parameters>
       <Docs>
         <typeparam name="T">To be added.</typeparam>
-        <param name="tensors">Input <see cref="T:System.Numerics.Tensors.Tensor`1" />.</param>
         <param name="dimension">Index of where the new dimension will be.</param>
+        <param name="tensors">Input <see cref="T:System.Numerics.Tensors.Tensor`1" />.</param>
         <summary>
             Join multiple <see cref="T:System.Numerics.Tensors.Tensor`1" /> along a new dimension. The axis parameter specifies the index of the new dimension. All tensors must have the same shape.
             </summary>
@@ -21648,12 +20864,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -21950,12 +21160,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -22315,12 +21519,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -22442,12 +21640,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -22569,12 +21761,6 @@
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -22646,12 +21832,6 @@
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       <ReturnValue>
         <ReturnType>System.String</ReturnType>
         <Attributes>
@@ -22775,12 +21955,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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       <ReturnValue>
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         <Attributes>
@@ -22899,12 +22073,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -23064,12 +22232,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -23141,12 +22303,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
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       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -23257,12 +22413,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-        <Attribute>
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       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
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@@ -23320,12 +22470,6 @@
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       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.ReadOnlyTensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -23416,12 +22560,6 @@
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       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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@@ -23589,12 +22727,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
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       <ReturnValue RefType="Readonly">
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
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diff --git a/xml/System.Numerics.Tensors/TensorPrimitives.xml b/xml/System.Numerics.Tensors/TensorPrimitives.xml
index f3389e64627..229a5bf6027 100644
--- a/xml/System.Numerics.Tensors/TensorPrimitives.xml
+++ b/xml/System.Numerics.Tensors/TensorPrimitives.xml
@@ -384,12 +384,6 @@
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       <ReturnValue>
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@@ -463,12 +457,6 @@
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@@ -655,12 +643,6 @@
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@@ -743,12 +725,6 @@
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       <ReturnValue>
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@@ -824,12 +800,6 @@
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@@ -1204,12 +1174,6 @@
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@@ -1276,12 +1240,6 @@
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@@ -1415,12 +1373,6 @@
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@@ -1487,12 +1439,6 @@
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@@ -1738,12 +1684,6 @@
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@@ -1869,12 +1809,6 @@
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@@ -2370,12 +2304,6 @@
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@@ -2649,12 +2577,6 @@
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@@ -2885,12 +2807,6 @@
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@@ -3109,12 +3025,6 @@
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@@ -3182,12 +3092,6 @@
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@@ -3301,12 +3205,6 @@
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@@ -3911,12 +3809,6 @@
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@@ -3998,12 +3890,6 @@
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@@ -4135,12 +4021,6 @@
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@@ -4318,12 +4198,6 @@
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@@ -4386,12 +4260,6 @@
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@@ -4970,12 +4838,6 @@
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@@ -5050,12 +4912,6 @@
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@@ -5304,12 +5160,6 @@
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@@ -5818,12 +5668,6 @@
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@@ -5951,12 +5795,6 @@
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@@ -6101,12 +5939,6 @@
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@@ -6229,12 +6061,6 @@
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@@ -6299,12 +6125,6 @@
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@@ -6434,12 +6254,6 @@
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@@ -6511,12 +6325,6 @@
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@@ -6643,12 +6451,6 @@
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@@ -6798,12 +6600,6 @@
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@@ -6931,12 +6727,6 @@
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@@ -7086,12 +6876,6 @@
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@@ -7219,12 +7003,6 @@
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@@ -7294,12 +7072,6 @@
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@@ -7429,12 +7201,6 @@
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@@ -7506,12 +7272,6 @@
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@@ -7638,12 +7398,6 @@
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -7791,12 +7545,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
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@@ -7870,12 +7618,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
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@@ -8064,12 +7806,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
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@@ -8152,12 +7888,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
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@@ -8234,12 +7964,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
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@@ -8394,12 +8118,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -8479,12 +8197,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
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@@ -8695,12 +8407,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -8971,12 +8677,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -9039,12 +8739,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -9142,12 +8836,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -9248,12 +8936,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -9371,12 +9053,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -11100,12 +10776,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -11171,12 +10841,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -11276,12 +10940,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -11377,12 +11035,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -11485,12 +11137,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -11957,12 +11603,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Numerics.Tensors/TensorSpan`1+Enumerator.xml b/xml/System.Numerics.Tensors/TensorSpan`1+Enumerator.xml
index 7f1912902f6..94b32391c6c 100644
--- a/xml/System.Numerics.Tensors/TensorSpan`1+Enumerator.xml
+++ b/xml/System.Numerics.Tensors/TensorSpan`1+Enumerator.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Enumerates the elements of a <see cref="T:System.Numerics.Tensors.TensorSpan`1" />.</summary>
diff --git a/xml/System.Numerics.Tensors/TensorSpan`1.xml b/xml/System.Numerics.Tensors/TensorSpan`1.xml
index 7138c5bda10..d36847061ae 100644
--- a/xml/System.Numerics.Tensors/TensorSpan`1.xml
+++ b/xml/System.Numerics.Tensors/TensorSpan`1.xml
@@ -70,12 +70,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="array" Type="System.Array" />
       </Parameters>
@@ -641,10 +635,6 @@
           <AttributeName Language="C#">[System.Obsolete("Equals() on TensorSpan will always throw an exception. Use the equality operator instead.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Equals() on TensorSpan will always throw an exception. Use the equality operator instead.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -676,12 +666,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
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       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -832,10 +816,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue RefType="Ref">
         <ReturnType>T</ReturnType>
@@ -1364,12 +1344,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Numerics.Tensors/Tensor`1.xml b/xml/System.Numerics.Tensors/Tensor`1.xml
index 28624a45fa2..06a099cf061 100644
--- a/xml/System.Numerics.Tensors/Tensor`1.xml
+++ b/xml/System.Numerics.Tensors/Tensor`1.xml
@@ -495,10 +495,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.Tensor&lt;T&gt;</ReturnType>
@@ -526,12 +522,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
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@@ -624,12 +614,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Collections.Generic.IEnumerator&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -689,10 +673,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
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-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
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       <ReturnValue RefType="Ref">
         <ReturnType>T</ReturnType>
@@ -778,10 +758,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.Tensor&lt;T&gt;</ReturnType>
@@ -980,12 +956,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.ReadOnlyTensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1017,12 +987,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.TensorSpan&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1054,12 +1018,6 @@
         <AssemblyName>System.Numerics.Tensors</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
-        <Attribute>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Tensors.Tensor&lt;T&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Numerics/BigInteger.xml b/xml/System.Numerics/BigInteger.xml
index adbc873b145..2fa4685579a 100644
--- a/xml/System.Numerics/BigInteger.xml
+++ b/xml/System.Numerics/BigInteger.xml
@@ -277,10 +277,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="value" Type="System.Byte[]" />
@@ -1255,12 +1251,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1429,12 +1419,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.BigInteger</ReturnType>
       </ReturnValue>
@@ -1486,12 +1470,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.BigInteger</ReturnType>
       </ReturnValue>
@@ -1543,12 +1521,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.BigInteger</ReturnType>
       </ReturnValue>
@@ -1935,12 +1907,6 @@
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         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
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-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -8518,12 +8484,6 @@ This operation performs an unsigned (otherwise known as a logical) right shift o
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         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.BigInteger</ReturnType>
       </ReturnValue>
@@ -8652,12 +8612,6 @@ This operation performs an unsigned (otherwise known as a logical) right shift o
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.BigInteger</ReturnType>
       </ReturnValue>
@@ -8794,12 +8748,6 @@ This operation performs an unsigned (otherwise known as a logical) right shift o
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.BigInteger</ReturnType>
       </ReturnValue>
@@ -9045,12 +8993,6 @@ If `provider` is `null`, the <xref:System.Globalization.NumberFormatInfo> object
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.BigInteger</ReturnType>
       </ReturnValue>
@@ -11031,12 +10973,6 @@ The following example calls the <xref:System.Numerics.BigInteger.CompareTo%28Sys
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -11101,12 +11037,6 @@ The following example calls the <xref:System.Numerics.BigInteger.CompareTo%28Sys
       <AssemblyInfo>
         <AssemblyName>System.Numerics</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -11180,12 +11110,6 @@ The integer value `33022` can be exported in four different arrays:
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -11253,12 +11177,6 @@ The integer value `33022` can be exported in four different arrays:
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -11342,12 +11260,6 @@ The integer value `33022` can be exported in four different arrays:
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -11442,12 +11354,6 @@ The integer value `33022` can be exported in four different arrays:
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -11700,12 +11606,6 @@ The integer value `33022` can be exported in four different arrays:
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -11836,12 +11736,6 @@ The integer value `33022` can be exported in four different arrays:
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -12024,12 +11918,6 @@ If `provider` is `null`, the <xref:System.Globalization.NumberFormatInfo> object
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Numerics/Complex.xml b/xml/System.Numerics/Complex.xml
index 5753ef8f85c..8e2046abc62 100644
--- a/xml/System.Numerics/Complex.xml
+++ b/xml/System.Numerics/Complex.xml
@@ -870,12 +870,6 @@ $(a + c) + bi$
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Complex</ReturnType>
       </ReturnValue>
@@ -927,12 +921,6 @@ $(a + c) + bi$
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Complex</ReturnType>
       </ReturnValue>
@@ -984,12 +972,6 @@ $(a + c) + bi$
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Complex</ReturnType>
       </ReturnValue>
@@ -1320,12 +1302,6 @@ $\frac{ac + bd}{c^2 + d^2} + (\frac{bc - ad}{c^2 + d^2})i$
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5093,12 +5069,6 @@ Languages that don't support custom operators can call the <xref:System.Numerics
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Complex</ReturnType>
       </ReturnValue>
@@ -5193,12 +5163,6 @@ Languages that don't support custom operators can call the <xref:System.Numerics
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Complex</ReturnType>
       </ReturnValue>
@@ -6758,12 +6722,6 @@ Languages that support custom operators can use the <xref:System.Numerics.Comple
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -6819,12 +6777,6 @@ Languages that support custom operators can use the <xref:System.Numerics.Comple
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -6898,12 +6850,6 @@ Languages that support custom operators can use the <xref:System.Numerics.Comple
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -6987,12 +6933,6 @@ Languages that support custom operators can use the <xref:System.Numerics.Comple
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -7234,12 +7174,6 @@ An implementation of this interface should produce the same string of characters
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7334,12 +7268,6 @@ An implementation of this interface should produce the same string of characters
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Numerics/IAdditionOperators`3.xml b/xml/System.Numerics/IAdditionOperators`3.xml
index 8aa43ac3dde..d9b40614f01 100644
--- a/xml/System.Numerics/IAdditionOperators`3.xml
+++ b/xml/System.Numerics/IAdditionOperators`3.xml
@@ -42,12 +42,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements this interface.</typeparam>
     <typeparam name="TOther">The type that will be added to <typeparamref name="TSelf" />.</typeparam>
diff --git a/xml/System.Numerics/IAdditiveIdentity`2.xml b/xml/System.Numerics/IAdditiveIdentity`2.xml
index beee73280b5..8cd60cccdba 100644
--- a/xml/System.Numerics/IAdditiveIdentity`2.xml
+++ b/xml/System.Numerics/IAdditiveIdentity`2.xml
@@ -34,12 +34,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements this interface.</typeparam>
     <typeparam name="TResult">The type that contains the additive identity of <typeparamref name="TSelf" />.</typeparam>
diff --git a/xml/System.Numerics/IBinaryInteger`1.xml b/xml/System.Numerics/IBinaryInteger`1.xml
index e524b53ec26..bea948a4db8 100644
--- a/xml/System.Numerics/IBinaryInteger`1.xml
+++ b/xml/System.Numerics/IBinaryInteger`1.xml
@@ -116,12 +116,6 @@
       <InterfaceName>System.IUtf8SpanParsable&lt;TSelf&gt;</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements the interface.</typeparam>
     <summary>Defines an integer type that is represented in a base-2 format.</summary>
@@ -311,12 +305,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSelf</ReturnType>
       </ReturnValue>
@@ -415,12 +403,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSelf</ReturnType>
       </ReturnValue>
@@ -572,12 +554,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -618,12 +594,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -664,12 +634,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -700,12 +664,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -763,12 +721,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -852,12 +804,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Numerics/IBinaryNumber`1.xml b/xml/System.Numerics/IBinaryNumber`1.xml
index 18e1c7f3a95..2af1b50a4f3 100644
--- a/xml/System.Numerics/IBinaryNumber`1.xml
+++ b/xml/System.Numerics/IBinaryNumber`1.xml
@@ -129,10 +129,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TSelf</ReturnType>
@@ -157,12 +153,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -191,12 +181,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSelf</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Numerics/IBitwiseOperators`3.xml b/xml/System.Numerics/IBitwiseOperators`3.xml
index 0ad2a5b425d..64e63905dfb 100644
--- a/xml/System.Numerics/IBitwiseOperators`3.xml
+++ b/xml/System.Numerics/IBitwiseOperators`3.xml
@@ -42,12 +42,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements this interface.</typeparam>
     <typeparam name="TOther">The type that is used in the operation with <typeparamref name="TSelf" />.</typeparam>
diff --git a/xml/System.Numerics/IComparisonOperators`3.xml b/xml/System.Numerics/IComparisonOperators`3.xml
index 8b7767421fb..dcc71517706 100644
--- a/xml/System.Numerics/IComparisonOperators`3.xml
+++ b/xml/System.Numerics/IComparisonOperators`3.xml
@@ -46,12 +46,6 @@
       <InterfaceName>System.Numerics.IEqualityOperators&lt;TSelf,TOther,TResult&gt;</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements this interface.</typeparam>
     <typeparam name="TOther">The type that will be compared with <typeparamref name="TSelf" />.</typeparam>
diff --git a/xml/System.Numerics/IDecrementOperators`1.xml b/xml/System.Numerics/IDecrementOperators`1.xml
index ae64202e6fd..8fb2f9dd667 100644
--- a/xml/System.Numerics/IDecrementOperators`1.xml
+++ b/xml/System.Numerics/IDecrementOperators`1.xml
@@ -26,12 +26,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements this interface.</typeparam>
     <summary>Defines a mechanism for decrementing a given value.</summary>
diff --git a/xml/System.Numerics/IDivisionOperators`3.xml b/xml/System.Numerics/IDivisionOperators`3.xml
index 704b6dd675a..04f99f6164b 100644
--- a/xml/System.Numerics/IDivisionOperators`3.xml
+++ b/xml/System.Numerics/IDivisionOperators`3.xml
@@ -42,12 +42,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements this interface.</typeparam>
     <typeparam name="TOther">The type that will divide <typeparamref name="TSelf" />.</typeparam>
diff --git a/xml/System.Numerics/IEqualityOperators`3.xml b/xml/System.Numerics/IEqualityOperators`3.xml
index 4089cd6b5f7..566ad7381bd 100644
--- a/xml/System.Numerics/IEqualityOperators`3.xml
+++ b/xml/System.Numerics/IEqualityOperators`3.xml
@@ -28,12 +28,6 @@
     <TypeParameter Name="TResult" />
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements this interface.</typeparam>
     <typeparam name="TOther">The type that will be compared with <typeparamref name="TSelf" />.</typeparam>
diff --git a/xml/System.Numerics/IExponentialFunctions`1.xml b/xml/System.Numerics/IExponentialFunctions`1.xml
index 7369aac74e3..445f96e3acd 100644
--- a/xml/System.Numerics/IExponentialFunctions`1.xml
+++ b/xml/System.Numerics/IExponentialFunctions`1.xml
@@ -92,12 +92,6 @@
       <InterfaceName>System.IUtf8SpanParsable&lt;TSelf&gt;</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements this interface.</typeparam>
     <summary>Defines support for exponential functions.</summary>
diff --git a/xml/System.Numerics/IFloatingPointConstants`1.xml b/xml/System.Numerics/IFloatingPointConstants`1.xml
index 061cefd30de..13d67a7f42d 100644
--- a/xml/System.Numerics/IFloatingPointConstants`1.xml
+++ b/xml/System.Numerics/IFloatingPointConstants`1.xml
@@ -89,12 +89,6 @@
       <InterfaceName>System.IUtf8SpanParsable&lt;TSelf&gt;</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements the interface.</typeparam>
     <summary>Defines support for floating-point constants.</summary>
diff --git a/xml/System.Numerics/IFloatingPointIeee754`1.xml b/xml/System.Numerics/IFloatingPointIeee754`1.xml
index aa7d9f4277c..84a184e5e2c 100644
--- a/xml/System.Numerics/IFloatingPointIeee754`1.xml
+++ b/xml/System.Numerics/IFloatingPointIeee754`1.xml
@@ -134,12 +134,6 @@
       <InterfaceName>System.IUtf8SpanParsable&lt;TSelf&gt;</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements the interface.</typeparam>
     <summary>Defines an IEEE 754 floating-point type.</summary>
diff --git a/xml/System.Numerics/IFloatingPoint`1.xml b/xml/System.Numerics/IFloatingPoint`1.xml
index 668dbaf60ad..1f7997df56c 100644
--- a/xml/System.Numerics/IFloatingPoint`1.xml
+++ b/xml/System.Numerics/IFloatingPoint`1.xml
@@ -113,12 +113,6 @@
       <InterfaceName>System.IUtf8SpanParsable&lt;TSelf&gt;</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements the interface.</typeparam>
     <summary>Defines a floating-point type.</summary>
@@ -510,12 +504,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -546,12 +534,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -582,12 +564,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -618,12 +594,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -681,12 +651,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -770,12 +734,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -859,12 +817,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -948,12 +900,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Numerics/IHyperbolicFunctions`1.xml b/xml/System.Numerics/IHyperbolicFunctions`1.xml
index 58d59a70c9d..26d7950bfae 100644
--- a/xml/System.Numerics/IHyperbolicFunctions`1.xml
+++ b/xml/System.Numerics/IHyperbolicFunctions`1.xml
@@ -92,12 +92,6 @@
       <InterfaceName>System.IUtf8SpanParsable&lt;TSelf&gt;</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements this interface.</typeparam>
     <summary>Defines support for hyperbolic functions.</summary>
diff --git a/xml/System.Numerics/IIncrementOperators`1.xml b/xml/System.Numerics/IIncrementOperators`1.xml
index 0bf8c7a069a..48fef7a89a0 100644
--- a/xml/System.Numerics/IIncrementOperators`1.xml
+++ b/xml/System.Numerics/IIncrementOperators`1.xml
@@ -26,12 +26,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements this interface.</typeparam>
     <summary>Defines a mechanism for incrementing a given value.</summary>
diff --git a/xml/System.Numerics/ILogarithmicFunctions`1.xml b/xml/System.Numerics/ILogarithmicFunctions`1.xml
index 31306395cf2..fe44946ffd0 100644
--- a/xml/System.Numerics/ILogarithmicFunctions`1.xml
+++ b/xml/System.Numerics/ILogarithmicFunctions`1.xml
@@ -92,12 +92,6 @@
       <InterfaceName>System.IUtf8SpanParsable&lt;TSelf&gt;</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements this interface.</typeparam>
     <summary>Defines support for logarithmic functions.</summary>
diff --git a/xml/System.Numerics/IMinMaxValue`1.xml b/xml/System.Numerics/IMinMaxValue`1.xml
index 735a199660f..ab338ca45e8 100644
--- a/xml/System.Numerics/IMinMaxValue`1.xml
+++ b/xml/System.Numerics/IMinMaxValue`1.xml
@@ -26,12 +26,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements this interface.</typeparam>
     <summary>Defines a mechanism for getting the minimum and maximum value of a type.</summary>
diff --git a/xml/System.Numerics/IModulusOperators`3.xml b/xml/System.Numerics/IModulusOperators`3.xml
index b0238fe24c7..36bdaec8f54 100644
--- a/xml/System.Numerics/IModulusOperators`3.xml
+++ b/xml/System.Numerics/IModulusOperators`3.xml
@@ -28,12 +28,6 @@
     <TypeParameter Name="TResult" />
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements this interface.</typeparam>
     <typeparam name="TOther">The type that will divide <typeparamref name="TSelf" />.</typeparam>
@@ -64,12 +58,6 @@ This type represents the `%` operator in C#, which is often used to compute the
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TResult</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Numerics/IMultiplicativeIdentity`2.xml b/xml/System.Numerics/IMultiplicativeIdentity`2.xml
index 85f2e103812..bb5cdf66caf 100644
--- a/xml/System.Numerics/IMultiplicativeIdentity`2.xml
+++ b/xml/System.Numerics/IMultiplicativeIdentity`2.xml
@@ -34,12 +34,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements this interface.</typeparam>
     <typeparam name="TResult">The type that contains the multiplicative identity of <typeparamref name="TSelf" />.</typeparam>
diff --git a/xml/System.Numerics/IMultiplyOperators`3.xml b/xml/System.Numerics/IMultiplyOperators`3.xml
index afe96aabe48..57deadffd61 100644
--- a/xml/System.Numerics/IMultiplyOperators`3.xml
+++ b/xml/System.Numerics/IMultiplyOperators`3.xml
@@ -42,12 +42,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements this interface.</typeparam>
     <typeparam name="TOther">The type that will multiply <typeparamref name="TSelf" />.</typeparam>
diff --git a/xml/System.Numerics/INumberBase`1.xml b/xml/System.Numerics/INumberBase`1.xml
index ec76083e56f..64ab0860fe3 100644
--- a/xml/System.Numerics/INumberBase`1.xml
+++ b/xml/System.Numerics/INumberBase`1.xml
@@ -86,12 +86,6 @@
       <InterfaceName>System.IUtf8SpanParsable&lt;TSelf&gt;</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements the interface.</typeparam>
     <summary>Defines the base of other number types.</summary>
@@ -140,12 +134,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSelf</ReturnType>
       </ReturnValue>
@@ -192,12 +180,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSelf</ReturnType>
       </ReturnValue>
@@ -242,12 +224,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSelf</ReturnType>
       </ReturnValue>
@@ -1070,12 +1046,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSelf</ReturnType>
         <Attributes>
@@ -1126,12 +1096,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSelf</ReturnType>
       </ReturnValue>
@@ -1353,12 +1317,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1417,12 +1375,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1479,12 +1431,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1541,12 +1487,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1605,12 +1545,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1667,12 +1601,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1728,12 +1656,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1788,12 +1710,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1848,12 +1764,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Numerics/INumber`1.xml b/xml/System.Numerics/INumber`1.xml
index c47d0467759..6880e0907ab 100644
--- a/xml/System.Numerics/INumber`1.xml
+++ b/xml/System.Numerics/INumber`1.xml
@@ -104,12 +104,6 @@
       <InterfaceName>System.IUtf8SpanParsable&lt;TSelf&gt;</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements the interface.</typeparam>
     <summary>Defines a number type.</summary>
diff --git a/xml/System.Numerics/IPowerFunctions`1.xml b/xml/System.Numerics/IPowerFunctions`1.xml
index 40eb464909c..e2610672e73 100644
--- a/xml/System.Numerics/IPowerFunctions`1.xml
+++ b/xml/System.Numerics/IPowerFunctions`1.xml
@@ -103,12 +103,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSelf</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Numerics/IRootFunctions`1.xml b/xml/System.Numerics/IRootFunctions`1.xml
index 9bdcd90ca8d..8ae181e1952 100644
--- a/xml/System.Numerics/IRootFunctions`1.xml
+++ b/xml/System.Numerics/IRootFunctions`1.xml
@@ -106,12 +106,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSelf</ReturnType>
       </ReturnValue>
@@ -139,12 +133,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSelf</ReturnType>
       </ReturnValue>
@@ -174,12 +162,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSelf</ReturnType>
       </ReturnValue>
@@ -209,12 +191,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSelf</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Numerics/IShiftOperators`3.xml b/xml/System.Numerics/IShiftOperators`3.xml
index 00500ac1505..f8067f48f1e 100644
--- a/xml/System.Numerics/IShiftOperators`3.xml
+++ b/xml/System.Numerics/IShiftOperators`3.xml
@@ -42,12 +42,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements this interface.</typeparam>
     <typeparam name="TOther">The type used to specify the amount by which <typeparamref name="TSelf" /> should be shifted.</typeparam>
diff --git a/xml/System.Numerics/ISignedNumber`1.xml b/xml/System.Numerics/ISignedNumber`1.xml
index 9b362fec5ac..2c02047b700 100644
--- a/xml/System.Numerics/ISignedNumber`1.xml
+++ b/xml/System.Numerics/ISignedNumber`1.xml
@@ -108,10 +108,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TSelf</ReturnType>
diff --git a/xml/System.Numerics/ISubtractionOperators`3.xml b/xml/System.Numerics/ISubtractionOperators`3.xml
index 38269b84ad6..953121e6cf6 100644
--- a/xml/System.Numerics/ISubtractionOperators`3.xml
+++ b/xml/System.Numerics/ISubtractionOperators`3.xml
@@ -42,12 +42,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements this interface.</typeparam>
     <typeparam name="TOther">The type that will be subtracted from <typeparamref name="TSelf" />.</typeparam>
diff --git a/xml/System.Numerics/ITrigonometricFunctions`1.xml b/xml/System.Numerics/ITrigonometricFunctions`1.xml
index f9e4deca34e..abe733b3177 100644
--- a/xml/System.Numerics/ITrigonometricFunctions`1.xml
+++ b/xml/System.Numerics/ITrigonometricFunctions`1.xml
@@ -92,12 +92,6 @@
       <InterfaceName>System.IUtf8SpanParsable&lt;TSelf&gt;</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements this interface.</typeparam>
     <summary>Defines support for trigonometric functions.</summary>
diff --git a/xml/System.Numerics/IUnaryNegationOperators`2.xml b/xml/System.Numerics/IUnaryNegationOperators`2.xml
index b093336d121..9e1ef785ee7 100644
--- a/xml/System.Numerics/IUnaryNegationOperators`2.xml
+++ b/xml/System.Numerics/IUnaryNegationOperators`2.xml
@@ -34,12 +34,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TSelf">The type that implements this interface.</typeparam>
     <typeparam name="TResult">The type that contains the result of negating <typeparamref name="TSelf" />.</typeparam>
diff --git a/xml/System.Numerics/IUnaryPlusOperators`2.xml b/xml/System.Numerics/IUnaryPlusOperators`2.xml
index fbf55061d2b..739bb0fa235 100644
--- a/xml/System.Numerics/IUnaryPlusOperators`2.xml
+++ b/xml/System.Numerics/IUnaryPlusOperators`2.xml
@@ -49,12 +49,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TResult</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Numerics/Matrix3x2.xml b/xml/System.Numerics/Matrix3x2.xml
index deeee79197f..59c22a9d80f 100644
--- a/xml/System.Numerics/Matrix3x2.xml
+++ b/xml/System.Numerics/Matrix3x2.xml
@@ -890,10 +890,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -2137,10 +2133,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Numerics/Matrix4x4.xml b/xml/System.Numerics/Matrix4x4.xml
index 4325eee0cde..2e3add719ef 100644
--- a/xml/System.Numerics/Matrix4x4.xml
+++ b/xml/System.Numerics/Matrix4x4.xml
@@ -2332,10 +2332,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -3981,10 +3977,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Numerics/Plane.xml b/xml/System.Numerics/Plane.xml
index 784c6188485..ba053848216 100644
--- a/xml/System.Numerics/Plane.xml
+++ b/xml/System.Numerics/Plane.xml
@@ -554,10 +554,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -877,10 +873,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Numerics/Quaternion.xml b/xml/System.Numerics/Quaternion.xml
index 164bc6589c5..42cf9db2b6c 100644
--- a/xml/System.Numerics/Quaternion.xml
+++ b/xml/System.Numerics/Quaternion.xml
@@ -669,10 +669,6 @@ w = cos(theta/2)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -1863,10 +1859,6 @@ w = cos(theta/2)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Numerics/TotalOrderIeee754Comparer`1.xml b/xml/System.Numerics/TotalOrderIeee754Comparer`1.xml
index ce2b41a0f89..b941a26b766 100644
--- a/xml/System.Numerics/TotalOrderIeee754Comparer`1.xml
+++ b/xml/System.Numerics/TotalOrderIeee754Comparer`1.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of the numbers to be compared, must be an IEEE 754 floating-point type.</typeparam>
@@ -233,12 +229,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Numerics/Vector.xml b/xml/System.Numerics/Vector.xml
index f29f9302880..c7ffaa706da 100644
--- a/xml/System.Numerics/Vector.xml
+++ b/xml/System.Numerics/Vector.xml
@@ -78,12 +78,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -148,12 +142,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -227,12 +215,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -295,12 +277,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;TTo&gt;</ReturnType>
       </ReturnValue>
@@ -1541,12 +1517,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1620,12 +1590,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1766,12 +1730,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1836,12 +1794,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -2017,12 +1969,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -2538,12 +2484,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -2657,12 +2597,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -2710,12 +2644,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -2762,12 +2690,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -2892,12 +2814,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -2953,12 +2869,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -3032,12 +2942,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -3293,12 +3197,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -3372,12 +3270,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3452,12 +3344,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3728,12 +3614,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -3980,12 +3860,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -4059,12 +3933,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4139,12 +4007,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4395,12 +4257,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -4474,12 +4330,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4554,12 +4404,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4723,12 +4567,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -4775,12 +4613,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -4827,12 +4659,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -4879,12 +4705,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -4931,12 +4751,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -5242,12 +5056,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -5321,12 +5129,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5401,12 +5203,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5657,12 +5453,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -5736,12 +5526,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5816,12 +5600,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5882,10 +5660,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
@@ -5938,10 +5712,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
@@ -5994,10 +5764,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
@@ -6046,12 +5812,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6111,10 +5871,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
@@ -6306,12 +6062,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -6367,12 +6117,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6428,12 +6172,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6489,12 +6227,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6550,12 +6282,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6630,12 +6356,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -6691,12 +6411,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6752,12 +6466,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6813,12 +6521,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6874,12 +6576,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6954,12 +6650,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -7033,12 +6723,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -7111,12 +6795,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -7622,12 +7300,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -7692,12 +7364,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -8934,12 +8600,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -8990,10 +8650,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -9048,10 +8704,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -9106,10 +8758,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -9160,12 +8808,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -9220,10 +8862,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -9294,12 +8932,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -9362,12 +8994,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -9420,12 +9046,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -10360,12 +9980,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -10444,12 +10058,6 @@ Note that this method returns a <xref:System.Single> instead of an integral type
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Numerics/Vector2.xml b/xml/System.Numerics/Vector2.xml
index c96fcc89494..e3ff0aaf937 100644
--- a/xml/System.Numerics/Vector2.xml
+++ b/xml/System.Numerics/Vector2.xml
@@ -455,10 +455,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -565,10 +561,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1185,10 +1177,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -3468,10 +3456,6 @@ The behavior of this method changed in .NET 5. For more information, see [Behavi
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -3530,10 +3514,6 @@ The behavior of this method changed in .NET 5. For more information, see [Behavi
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -3611,10 +3591,6 @@ The behavior of this method changed in .NET 5. For more information, see [Behavi
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Numerics/Vector3.xml b/xml/System.Numerics/Vector3.xml
index 3bd12032637..c26aeed9c9f 100644
--- a/xml/System.Numerics/Vector3.xml
+++ b/xml/System.Numerics/Vector3.xml
@@ -501,10 +501,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -611,10 +607,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1314,10 +1306,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -3589,10 +3577,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -3651,10 +3635,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -3732,10 +3712,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Numerics/Vector4.xml b/xml/System.Numerics/Vector4.xml
index 1a25bfd7ad1..66e2f799ef2 100644
--- a/xml/System.Numerics/Vector4.xml
+++ b/xml/System.Numerics/Vector4.xml
@@ -549,10 +549,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -659,10 +655,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1349,10 +1341,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -3584,10 +3572,6 @@ The behavior of this method changed in .NET 5. For more information, see [Behavi
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -3646,10 +3630,6 @@ The behavior of this method changed in .NET 5. For more information, see [Behavi
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -3727,10 +3707,6 @@ The behavior of this method changed in .NET 5. For more information, see [Behavi
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Numerics/Vector`1.xml b/xml/System.Numerics/Vector`1.xml
index 52d774536ad..bb9b8b67ec1 100644
--- a/xml/System.Numerics/Vector`1.xml
+++ b/xml/System.Numerics/Vector`1.xml
@@ -302,12 +302,6 @@ The type `T` can be any of the following numeric types:
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="value" Type="T" />
       </Parameters>
@@ -347,12 +341,6 @@ The type `T` can be any of the following numeric types:
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="values" Type="T[]" />
       </Parameters>
@@ -405,12 +393,6 @@ The type `T` can be any of the following numeric types:
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="values" Type="T[]" />
         <Parameter Name="index" Type="System.Int32" />
@@ -600,10 +582,6 @@ The type `T` can be any of the following numeric types:
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -664,10 +642,6 @@ The type `T` can be any of the following numeric types:
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -845,10 +819,6 @@ The type `T` can be any of the following numeric types:
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -1022,10 +992,6 @@ The type `T` can be any of the following numeric types:
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
@@ -1374,12 +1340,6 @@ The type `T` can be any of the following numeric types:
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -2436,12 +2396,6 @@ The type `T` can be any of the following numeric types:
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -2501,12 +2455,6 @@ The type `T` can be any of the following numeric types:
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -2877,10 +2825,6 @@ The type `T` can be any of the following numeric types:
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2936,10 +2880,6 @@ The type `T` can be any of the following numeric types:
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -3012,10 +2952,6 @@ The type `T` can be any of the following numeric types:
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Reflection.Context/CustomReflectionContext.xml b/xml/System.Reflection.Context/CustomReflectionContext.xml
index fd134d53b67..41aa9760933 100644
--- a/xml/System.Reflection.Context/CustomReflectionContext.xml
+++ b/xml/System.Reflection.Context/CustomReflectionContext.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a customizable reflection context.</summary>
diff --git a/xml/System.Reflection.Emit/AssemblyBuilder.xml b/xml/System.Reflection.Emit/AssemblyBuilder.xml
index ee6e05f93d9..25cd980b947 100644
--- a/xml/System.Reflection.Emit/AssemblyBuilder.xml
+++ b/xml/System.Reflection.Emit/AssemblyBuilder.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -85,8 +81,7 @@ For more information about this API, see [Supplemental API remarks for AssemblyB
 
 > [!WARNING]
 > `AssemblyBuilder` APIs require a fully trusted environment with trusted input, similar to other technologies such as compilers. There are no restrictions other than basic validation for generated IL that the `AssemblyBuilder` can contain. That includes validation for member name, count, and associated metadata, such as custom attributes.
-]]>
-      </format>
+]]></format>
     </remarks>
     <example>
       <format type="text/markdown"><![CDATA[
@@ -344,10 +339,6 @@ The following code example shows how to define and use a dynamic assembly. The e
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1420,10 +1411,6 @@ The following code example shows how to define and use a dynamic assembly. The e
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
@@ -1465,12 +1452,6 @@ The following code example shows how to define and use a dynamic assembly. The e
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1547,10 +1528,6 @@ The following code example shows how to define and use a dynamic assembly. The e
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -3462,12 +3439,6 @@ For information on how to format `binaryAttribute`, see the metadata specificati
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Emit/ConstructorBuilder.xml b/xml/System.Reflection.Emit/ConstructorBuilder.xml
index a5e7a1e4a89..0a54906e592 100644
--- a/xml/System.Reflection.Emit/ConstructorBuilder.xml
+++ b/xml/System.Reflection.Emit/ConstructorBuilder.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -324,10 +320,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -1040,12 +1032,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -1112,12 +1098,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -1451,10 +1431,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -1674,12 +1650,6 @@ For information on how to format `binaryAttribute`, see the metadata specificati
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Emit/CustomAttributeBuilder.xml b/xml/System.Reflection.Emit/CustomAttributeBuilder.xml
index e7d9a5e7e7e..8a9b3f41eda 100644
--- a/xml/System.Reflection.Emit/CustomAttributeBuilder.xml
+++ b/xml/System.Reflection.Emit/CustomAttributeBuilder.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
diff --git a/xml/System.Reflection.Emit/DynamicILInfo.xml b/xml/System.Reflection.Emit/DynamicILInfo.xml
index b732130f975..768f8f2781d 100644
--- a/xml/System.Reflection.Emit/DynamicILInfo.xml
+++ b/xml/System.Reflection.Emit/DynamicILInfo.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -560,12 +556,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -623,10 +613,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -703,12 +689,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -760,10 +740,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -834,12 +810,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -893,10 +863,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Reflection.Emit/DynamicMethod.xml b/xml/System.Reflection.Emit/DynamicMethod.xml
index b3dc520e131..7abe6f6ab2a 100644
--- a/xml/System.Reflection.Emit/DynamicMethod.xml
+++ b/xml/System.Reflection.Emit/DynamicMethod.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -1270,10 +1266,6 @@ The following code example creates a dynamic method that takes two parameters. T
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -1330,12 +1322,6 @@ The following code example creates a dynamic method that takes two parameters. T
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Emit.ParameterBuilder</ReturnType>
       </ReturnValue>
@@ -1934,10 +1920,6 @@ The following code example creates a dynamic method that takes two parameters. T
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2537,10 +2519,6 @@ The following code example creates a dynamic method that takes two parameters. T
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
diff --git a/xml/System.Reflection.Emit/EnumBuilder.xml b/xml/System.Reflection.Emit/EnumBuilder.xml
index 719098dfbf2..0b5129566c9 100644
--- a/xml/System.Reflection.Emit/EnumBuilder.xml
+++ b/xml/System.Reflection.Emit/EnumBuilder.xml
@@ -68,10 +68,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -224,10 +220,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -320,10 +312,6 @@ The following code sample demonstrates the use of the `AssemblyQualifiedName` pr
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -548,10 +536,6 @@ The following code sample demonstrates the use of the `AssemblyQualifiedName` pr
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -716,10 +700,6 @@ The following code sample demonstrates the use of the `AssemblyQualifiedName` pr
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -925,10 +905,6 @@ The following code sample demonstrates the use of the `AssemblyQualifiedName` pr
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.ConstructorInfo</ReturnType>
@@ -1194,12 +1170,6 @@ The following code sample demonstrates the use of the `AssemblyQualifiedName` pr
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
       </ReturnValue>
@@ -1956,10 +1926,6 @@ The following code sample demonstrates the use of the `AssemblyQualifiedName` pr
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
@@ -2293,10 +2259,6 @@ The following code sample demonstrates the use of the `AssemblyQualifiedName` pr
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.PropertyInfo</ReturnType>
@@ -2468,10 +2430,6 @@ The following code sample demonstrates the use of the `AssemblyQualifiedName` pr
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -2590,12 +2548,6 @@ The following code sample demonstrates the use of the `AssemblyQualifiedName` pr
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3558,10 +3510,6 @@ The following code sample demonstrates the use of the `AssemblyQualifiedName` pr
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -3620,10 +3568,6 @@ The following code sample demonstrates the use of the `AssemblyQualifiedName` pr
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -3793,12 +3737,6 @@ For information on how to format `binaryAttribute`, see the metadata specificati
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Emit/EventBuilder.xml b/xml/System.Reflection.Emit/EventBuilder.xml
index f2a70793c5a..2177453bbf6 100644
--- a/xml/System.Reflection.Emit/EventBuilder.xml
+++ b/xml/System.Reflection.Emit/EventBuilder.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -460,12 +456,6 @@ For information on how to format `binaryAttribute`, see the metadata specificati
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Emit/FieldBuilder.xml b/xml/System.Reflection.Emit/FieldBuilder.xml
index f04a694f656..61322f39ebd 100644
--- a/xml/System.Reflection.Emit/FieldBuilder.xml
+++ b/xml/System.Reflection.Emit/FieldBuilder.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -210,10 +206,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -470,12 +462,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -714,10 +700,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -774,10 +756,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -831,12 +809,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1016,12 +988,6 @@ For information on how to format `binaryAttribute`, see the metadata specificati
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1225,12 +1191,6 @@ For information on how to format `binaryAttribute`, see the metadata specificati
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Emit/GenericTypeParameterBuilder.xml b/xml/System.Reflection.Emit/GenericTypeParameterBuilder.xml
index 9c5bfaf1c7d..bd763456985 100644
--- a/xml/System.Reflection.Emit/GenericTypeParameterBuilder.xml
+++ b/xml/System.Reflection.Emit/GenericTypeParameterBuilder.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -193,10 +189,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -278,10 +270,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -382,10 +370,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodBase</ReturnType>
@@ -439,10 +423,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -491,12 +471,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -547,10 +521,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1021,12 +991,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
       </ReturnValue>
@@ -2159,10 +2123,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.PropertyInfo</ReturnType>
@@ -2327,10 +2287,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -2457,12 +2413,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2522,12 +2472,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3705,10 +3649,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -3755,10 +3695,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -3801,10 +3737,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -3867,12 +3799,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4023,12 +3949,6 @@ For information on how to format `binaryAttribute`, see the metadata specificati
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Emit/ILGenerator.xml b/xml/System.Reflection.Emit/ILGenerator.xml
index 5a55b1aab0b..22f5aa25a9e 100644
--- a/xml/System.Reflection.Emit/ILGenerator.xml
+++ b/xml/System.Reflection.Emit/ILGenerator.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -157,12 +153,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1938,12 +1928,6 @@ The following code example emits two methods, a `varargs` method and a method th
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2027,10 +2011,6 @@ The following code example emits two methods, a `varargs` method and a method th
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1;netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Reflection.Emit/Label.xml b/xml/System.Reflection.Emit/Label.xml
index 87418fd8ca9..28293f9ba1f 100644
--- a/xml/System.Reflection.Emit/Label.xml
+++ b/xml/System.Reflection.Emit/Label.xml
@@ -110,12 +110,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Emit/LocalBuilder.xml b/xml/System.Reflection.Emit/LocalBuilder.xml
index 1947aa469ed..eafc97bd1e4 100644
--- a/xml/System.Reflection.Emit/LocalBuilder.xml
+++ b/xml/System.Reflection.Emit/LocalBuilder.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
diff --git a/xml/System.Reflection.Emit/MethodBuilder.xml b/xml/System.Reflection.Emit/MethodBuilder.xml
index 184ec3f5f5f..07c33f578df 100644
--- a/xml/System.Reflection.Emit/MethodBuilder.xml
+++ b/xml/System.Reflection.Emit/MethodBuilder.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -416,10 +412,6 @@ The following example uses the <xref:System.Reflection.Emit.MethodBuilder> class
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -742,10 +734,6 @@ The following example uses the <xref:System.Reflection.Emit.MethodBuilder> class
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1510,12 +1498,6 @@ The following example uses the <xref:System.Reflection.Emit.MethodBuilder> class
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -2181,10 +2163,6 @@ The following example uses the <xref:System.Reflection.Emit.MethodBuilder> class
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -2495,12 +2473,6 @@ For information on how to format `binaryAttribute`, see the metadata specificati
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2856,10 +2828,6 @@ For information on how to format `binaryAttribute`, see the metadata specificati
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2935,10 +2903,6 @@ For information on how to format `binaryAttribute`, see the metadata specificati
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -3046,12 +3010,6 @@ For information on how to format `binaryAttribute`, see the metadata specificati
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Emit/ModuleBuilder.xml b/xml/System.Reflection.Emit/ModuleBuilder.xml
index aa442dcd79c..3ac690f9147 100644
--- a/xml/System.Reflection.Emit/ModuleBuilder.xml
+++ b/xml/System.Reflection.Emit/ModuleBuilder.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -2538,12 +2534,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3333,10 +3323,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Methods might be removed")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Methods might be removed")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
@@ -4725,10 +4711,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Trimming changes metadata tokens")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Trimming changes metadata tokens")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.FieldInfo</ReturnType>
@@ -4814,10 +4796,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Trimming changes metadata tokens")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Trimming changes metadata tokens")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MemberInfo</ReturnType>
@@ -4907,10 +4885,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Trimming changes metadata tokens")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Trimming changes metadata tokens")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodBase</ReturnType>
@@ -5358,12 +5332,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Emit/OpCode.xml b/xml/System.Reflection.Emit/OpCode.xml
index 727dbcfcb25..3036126643b 100644
--- a/xml/System.Reflection.Emit/OpCode.xml
+++ b/xml/System.Reflection.Emit/OpCode.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Reflection.Emit/ParameterBuilder.xml b/xml/System.Reflection.Emit/ParameterBuilder.xml
index 79a869c80ed..6e0c5e1f9e8 100644
--- a/xml/System.Reflection.Emit/ParameterBuilder.xml
+++ b/xml/System.Reflection.Emit/ParameterBuilder.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -515,10 +511,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1;netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -570,10 +562,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1;netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -626,12 +614,6 @@ For information on how to format `binaryAttribute`, see the metadata specificati
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Emit/PersistedAssemblyBuilder.xml b/xml/System.Reflection.Emit/PersistedAssemblyBuilder.xml
index bb83aba6475..637623c60e7 100644
--- a/xml/System.Reflection.Emit/PersistedAssemblyBuilder.xml
+++ b/xml/System.Reflection.Emit/PersistedAssemblyBuilder.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an AssemblyBuilder implementation that can persist assembly to a disk or stream.</summary>
@@ -118,10 +114,6 @@ For more information about this API, see [Persisted dynamic assemblies in .NET](
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -351,12 +343,6 @@ For more information about this API, see [Persisted dynamic assemblies in .NET](
         <AssemblyName>System.Reflection.Emit</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Emit/PropertyBuilder.xml b/xml/System.Reflection.Emit/PropertyBuilder.xml
index abf81551a1c..83bedc594c7 100644
--- a/xml/System.Reflection.Emit/PropertyBuilder.xml
+++ b/xml/System.Reflection.Emit/PropertyBuilder.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -377,10 +373,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -591,12 +583,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
       </ReturnValue>
@@ -698,12 +684,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
       </ReturnValue>
@@ -784,12 +764,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -845,12 +819,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -1129,10 +1097,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -1176,10 +1140,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1234,12 +1194,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1400,12 +1354,6 @@ For information on how to format `binaryAttribute`, see the metadata specificati
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1659,12 +1607,6 @@ For information on how to format `binaryAttribute`, see the metadata specificati
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1721,12 +1663,6 @@ For information on how to format `binaryAttribute`, see the metadata specificati
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Emit/SignatureHelper.xml b/xml/System.Reflection.Emit/SignatureHelper.xml
index f16ec98cb01..1ff4b7e9e38 100644
--- a/xml/System.Reflection.Emit/SignatureHelper.xml
+++ b/xml/System.Reflection.Emit/SignatureHelper.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -463,12 +459,6 @@ For more information, see [ECMA 335 Common Language Infrastructure (CLI)](https:
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -818,10 +808,6 @@ For more information, see [ECMA 335 Common Language Infrastructure (CLI)](https:
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1;netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -933,10 +919,6 @@ For more information, see [ECMA 335 Common Language Infrastructure (CLI)](https:
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1;netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1025,12 +1007,6 @@ For more information, see [ECMA 335 Common Language Infrastructure (CLI)](https:
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Emit.SignatureHelper</ReturnType>
       </ReturnValue>
@@ -1102,10 +1078,6 @@ For more information, see [ECMA 335 Common Language Infrastructure (CLI)](https:
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1239,10 +1211,6 @@ For more information, see [ECMA 335 Common Language Infrastructure (CLI)](https:
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1;netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Reflection.Emit/TypeBuilder.xml b/xml/System.Reflection.Emit/TypeBuilder.xml
index a07ee9edee5..86e026d3f55 100644
--- a/xml/System.Reflection.Emit/TypeBuilder.xml
+++ b/xml/System.Reflection.Emit/TypeBuilder.xml
@@ -68,10 +68,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -387,10 +383,6 @@ The following code sample demonstrates how to build a type dynamically by using
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -471,10 +463,6 @@ See <xref:System.Reflection.AssemblyName> for a description of the format of the
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -716,10 +704,6 @@ See <xref:System.Reflection.AssemblyName> for a description of the format of the
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodBase</ReturnType>
@@ -776,10 +760,6 @@ See <xref:System.Reflection.AssemblyName> for a description of the format of the
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -4407,10 +4387,6 @@ See <xref:System.Reflection.AssemblyName> for a description of the format of the
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -4742,10 +4718,6 @@ See <xref:System.Reflection.AssemblyName> for a description of the format of the
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.ConstructorInfo</ReturnType>
@@ -5973,10 +5945,6 @@ See <xref:System.Reflection.AssemblyName> for a description of the format of the
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
@@ -6314,10 +6282,6 @@ See <xref:System.Reflection.AssemblyName> for a description of the format of the
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.PropertyInfo</ReturnType>
@@ -6498,10 +6462,6 @@ See <xref:System.Reflection.AssemblyName> for a description of the format of the
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -6636,12 +6596,6 @@ See <xref:System.Reflection.AssemblyName> for a description of the format of the
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6695,12 +6649,6 @@ See <xref:System.Reflection.AssemblyName> for a description of the format of the
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -8183,10 +8131,6 @@ See <xref:System.Reflection.AssemblyName> for a description of the format of the
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -8302,10 +8246,6 @@ See <xref:System.Reflection.AssemblyName> for a description of the format of the
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -8475,12 +8415,6 @@ For more information on how to format `binaryAttribute`, see [ECMA C# and Common
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -8535,10 +8469,6 @@ For more information on how to format `binaryAttribute`, see [ECMA C# and Common
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -8604,12 +8534,6 @@ For more information on how to format `binaryAttribute`, see [ECMA C# and Common
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata.Ecma335/ArrayShapeEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/ArrayShapeEncoder.xml
index 7e5d947584c..824a6560523 100644
--- a/xml/System.Reflection.Metadata.Ecma335/ArrayShapeEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/ArrayShapeEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -117,12 +113,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata.Ecma335/BlobEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/BlobEncoder.xml
index 2ebf20a4e5b..5362276479e 100644
--- a/xml/System.Reflection.Metadata.Ecma335/BlobEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/BlobEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/ControlFlowBuilder.xml b/xml/System.Reflection.Metadata.Ecma335/ControlFlowBuilder.xml
index a512c82863d..143b9c93164 100644
--- a/xml/System.Reflection.Metadata.Ecma335/ControlFlowBuilder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/ControlFlowBuilder.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Emits branches and exception blocks in a method body.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/CustomAttributeArrayTypeEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/CustomAttributeArrayTypeEncoder.xml
index 6da1d2bfb3f..4758bce13f6 100644
--- a/xml/System.Reflection.Metadata.Ecma335/CustomAttributeArrayTypeEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/CustomAttributeArrayTypeEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/CustomAttributeElementTypeEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/CustomAttributeElementTypeEncoder.xml
index f01da3cde71..ddd91723f3e 100644
--- a/xml/System.Reflection.Metadata.Ecma335/CustomAttributeElementTypeEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/CustomAttributeElementTypeEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/CustomAttributeNamedArgumentsEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/CustomAttributeNamedArgumentsEncoder.xml
index 384018e3bfb..e982012d4a1 100644
--- a/xml/System.Reflection.Metadata.Ecma335/CustomAttributeNamedArgumentsEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/CustomAttributeNamedArgumentsEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/CustomModifiersEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/CustomModifiersEncoder.xml
index 7ac334c9291..6f94866aeaa 100644
--- a/xml/System.Reflection.Metadata.Ecma335/CustomModifiersEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/CustomModifiersEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/EditAndContinueLogEntry.xml b/xml/System.Reflection.Metadata.Ecma335/EditAndContinueLogEntry.xml
index 37af97fad1c..e65e7b6dddd 100644
--- a/xml/System.Reflection.Metadata.Ecma335/EditAndContinueLogEntry.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/EditAndContinueLogEntry.xml
@@ -94,12 +94,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata.Ecma335/ExceptionRegionEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/ExceptionRegionEncoder.xml
index b458ebbaa3a..4d8107fb3fb 100644
--- a/xml/System.Reflection.Metadata.Ecma335/ExceptionRegionEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/ExceptionRegionEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/FieldTypeEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/FieldTypeEncoder.xml
index 1415b3d6c86..5c591dc04ce 100644
--- a/xml/System.Reflection.Metadata.Ecma335/FieldTypeEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/FieldTypeEncoder.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides encoder for field signature blob, with additional support for encoding ref fields, custom modifiers and typed references.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/FixedArgumentsEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/FixedArgumentsEncoder.xml
index 8f346f5c874..5052440b634 100644
--- a/xml/System.Reflection.Metadata.Ecma335/FixedArgumentsEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/FixedArgumentsEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/GenericTypeArgumentsEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/GenericTypeArgumentsEncoder.xml
index b7adfca4d58..79202647f4b 100644
--- a/xml/System.Reflection.Metadata.Ecma335/GenericTypeArgumentsEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/GenericTypeArgumentsEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/InstructionEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/InstructionEncoder.xml
index b28bd20f6fa..db93dcc685e 100644
--- a/xml/System.Reflection.Metadata.Ecma335/InstructionEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/InstructionEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encodes Common Intermediate Language (CIL) instructions.</summary>
@@ -343,10 +339,6 @@ This example shows how to emit a method body using <xref:System.Reflection.Metad
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Metadata.Ecma335.ControlFlowBuilder</ReturnType>
diff --git a/xml/System.Reflection.Metadata.Ecma335/LabelHandle.xml b/xml/System.Reflection.Metadata.Ecma335/LabelHandle.xml
index 839b84bcbf5..9294d49bba3 100644
--- a/xml/System.Reflection.Metadata.Ecma335/LabelHandle.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/LabelHandle.xml
@@ -58,12 +58,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata.Ecma335/LiteralEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/LiteralEncoder.xml
index 9bd34b84038..28beb0c7ba5 100644
--- a/xml/System.Reflection.Metadata.Ecma335/LiteralEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/LiteralEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods for encoding literals.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/LiteralsEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/LiteralsEncoder.xml
index 80b382bd97f..f76b20f61f4 100644
--- a/xml/System.Reflection.Metadata.Ecma335/LiteralsEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/LiteralsEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/LocalVariableTypeEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/LocalVariableTypeEncoder.xml
index 1d70b79f5e2..fdc6e0c14b2 100644
--- a/xml/System.Reflection.Metadata.Ecma335/LocalVariableTypeEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/LocalVariableTypeEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/LocalVariablesEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/LocalVariablesEncoder.xml
index f75b4053ae5..904cfefbec9 100644
--- a/xml/System.Reflection.Metadata.Ecma335/LocalVariablesEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/LocalVariablesEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/MetadataAggregator.xml b/xml/System.Reflection.Metadata.Ecma335/MetadataAggregator.xml
index 86d60975803..2f786968fc5 100644
--- a/xml/System.Reflection.Metadata.Ecma335/MetadataAggregator.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/MetadataAggregator.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -93,12 +89,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="baseTableRowCounts" Type="System.Collections.Generic.IReadOnlyList&lt;System.Int32&gt;" />
         <Parameter Name="baseHeapSizes" Type="System.Collections.Generic.IReadOnlyList&lt;System.Int32&gt;" />
diff --git a/xml/System.Reflection.Metadata.Ecma335/MetadataBuilder.xml b/xml/System.Reflection.Metadata.Ecma335/MetadataBuilder.xml
index 8a58889035d..3414fc75c81 100644
--- a/xml/System.Reflection.Metadata.Ecma335/MetadataBuilder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/MetadataBuilder.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The MetadataBuilder class writes metadata for an assembly in a highly performant manner. It is designed for use by compilers and other assembly generation tools.</summary>
@@ -231,12 +227,6 @@ This example shows how to emit a console application assembly using <xref:System
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Metadata.ConstantHandle</ReturnType>
       </ReturnValue>
@@ -1946,12 +1936,6 @@ Entries must be added in the same order as the corresponding type definitions.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Metadata.BlobHandle</ReturnType>
       </ReturnValue>
@@ -2091,12 +2075,6 @@ Entries must be added in the same order as the corresponding type definitions.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Metadata.BlobHandle</ReturnType>
       </ReturnValue>
@@ -2306,12 +2284,6 @@ For more information about document name blobs, see: https://github.com/dotnet/r
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -2341,12 +2313,6 @@ For more information about document name blobs, see: https://github.com/dotnet/r
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Metadata.ReservedBlob&lt;System.Reflection.Metadata.GuidHandle&gt;</ReturnType>
       </ReturnValue>
@@ -2377,12 +2343,6 @@ For more information about document name blobs, see: https://github.com/dotnet/r
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Metadata.ReservedBlob&lt;System.Reflection.Metadata.UserStringHandle&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata.Ecma335/MetadataReaderExtensions.xml b/xml/System.Reflection.Metadata.Ecma335/MetadataReaderExtensions.xml
index 8962a587907..d2decb371fc 100644
--- a/xml/System.Reflection.Metadata.Ecma335/MetadataReaderExtensions.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/MetadataReaderExtensions.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides extension methods for working with certain raw elements of the ECMA-335 metadata tables and heaps.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/MetadataRootBuilder.xml b/xml/System.Reflection.Metadata.Ecma335/MetadataRootBuilder.xml
index 5f056297a6a..70df22ebc32 100644
--- a/xml/System.Reflection.Metadata.Ecma335/MetadataRootBuilder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/MetadataRootBuilder.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Builder of a Metadata Root to be embedded in a Portable Executable image.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/MetadataTokens.xml b/xml/System.Reflection.Metadata.Ecma335/MetadataTokens.xml
index 7f6fb55b0ce..061e2d154ce 100644
--- a/xml/System.Reflection.Metadata.Ecma335/MetadataTokens.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/MetadataTokens.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/MethodBodyStreamEncoder+MethodBody.xml b/xml/System.Reflection.Metadata.Ecma335/MethodBodyStreamEncoder+MethodBody.xml
index b0f2838c093..a5d8bd734f1 100644
--- a/xml/System.Reflection.Metadata.Ecma335/MethodBodyStreamEncoder+MethodBody.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/MethodBodyStreamEncoder+MethodBody.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Describes a method body. This class is meant to used along with the <see cref="T:System.Reflection.Metadata.Ecma335.MethodBodyStreamEncoder" /> class.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/MethodBodyStreamEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/MethodBodyStreamEncoder.xml
index 1a932845249..130946e5191 100644
--- a/xml/System.Reflection.Metadata.Ecma335/MethodBodyStreamEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/MethodBodyStreamEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an encoder for a method body stream.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/MethodSignatureEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/MethodSignatureEncoder.xml
index 8a2cf454995..6a7fdec49d0 100644
--- a/xml/System.Reflection.Metadata.Ecma335/MethodSignatureEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/MethodSignatureEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an encoder for method signatures.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/NameEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/NameEncoder.xml
index bff1db7717c..472b4d504dd 100644
--- a/xml/System.Reflection.Metadata.Ecma335/NameEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/NameEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/NamedArgumentTypeEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/NamedArgumentTypeEncoder.xml
index e60f99e5a38..8cd457ffc8d 100644
--- a/xml/System.Reflection.Metadata.Ecma335/NamedArgumentTypeEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/NamedArgumentTypeEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/NamedArgumentsEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/NamedArgumentsEncoder.xml
index ef2184052ac..8ba806e84aa 100644
--- a/xml/System.Reflection.Metadata.Ecma335/NamedArgumentsEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/NamedArgumentsEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/ParameterTypeEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/ParameterTypeEncoder.xml
index 07f8fcee6f2..914c87abd74 100644
--- a/xml/System.Reflection.Metadata.Ecma335/ParameterTypeEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/ParameterTypeEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/ParametersEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/ParametersEncoder.xml
index ba63df05497..5b9eb3c0dea 100644
--- a/xml/System.Reflection.Metadata.Ecma335/ParametersEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/ParametersEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/PermissionSetEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/PermissionSetEncoder.xml
index 18ba3aa5f3b..7a0efc20b33 100644
--- a/xml/System.Reflection.Metadata.Ecma335/PermissionSetEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/PermissionSetEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -89,12 +85,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Metadata.Ecma335.PermissionSetEncoder</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata.Ecma335/PortablePdbBuilder.xml b/xml/System.Reflection.Metadata.Ecma335/PortablePdbBuilder.xml
index 9ead9df83e0..36931262979 100644
--- a/xml/System.Reflection.Metadata.Ecma335/PortablePdbBuilder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/PortablePdbBuilder.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the builder of a Portable PDB image.</summary>
@@ -56,12 +52,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="tablesAndHeaps" Type="System.Reflection.Metadata.Ecma335.MetadataBuilder">
           <Attributes>
diff --git a/xml/System.Reflection.Metadata.Ecma335/ReturnTypeEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/ReturnTypeEncoder.xml
index dc950e8d076..54b80b3bfa1 100644
--- a/xml/System.Reflection.Metadata.Ecma335/ReturnTypeEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/ReturnTypeEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/ScalarEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/ScalarEncoder.xml
index dedcbb36a62..f72b097a174 100644
--- a/xml/System.Reflection.Metadata.Ecma335/ScalarEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/ScalarEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -118,12 +114,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -185,12 +175,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata.Ecma335/SignatureDecoder`2.xml b/xml/System.Reflection.Metadata.Ecma335/SignatureDecoder`2.xml
index 53dd63662b0..423f231ba0e 100644
--- a/xml/System.Reflection.Metadata.Ecma335/SignatureDecoder`2.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/SignatureDecoder`2.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TType">To be added.</typeparam>
diff --git a/xml/System.Reflection.Metadata.Ecma335/SignatureTypeEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/SignatureTypeEncoder.xml
index 0a00ca455e2..2838c98379e 100644
--- a/xml/System.Reflection.Metadata.Ecma335/SignatureTypeEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/SignatureTypeEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encodes a type in a signature.</summary>
diff --git a/xml/System.Reflection.Metadata.Ecma335/VectorEncoder.xml b/xml/System.Reflection.Metadata.Ecma335/VectorEncoder.xml
index 970301687e2..89e6ead358f 100644
--- a/xml/System.Reflection.Metadata.Ecma335/VectorEncoder.xml
+++ b/xml/System.Reflection.Metadata.Ecma335/VectorEncoder.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata/AssemblyDefinition.xml b/xml/System.Reflection.Metadata/AssemblyDefinition.xml
index 973f58bec94..cb74a2bf9c1 100644
--- a/xml/System.Reflection.Metadata/AssemblyDefinition.xml
+++ b/xml/System.Reflection.Metadata/AssemblyDefinition.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata/AssemblyDefinitionHandle.xml b/xml/System.Reflection.Metadata/AssemblyDefinitionHandle.xml
index 4a8e6591b73..d1573a2f663 100644
--- a/xml/System.Reflection.Metadata/AssemblyDefinitionHandle.xml
+++ b/xml/System.Reflection.Metadata/AssemblyDefinitionHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/AssemblyFileHandle.xml b/xml/System.Reflection.Metadata/AssemblyFileHandle.xml
index 8ea8f24099f..093ba1a00b7 100644
--- a/xml/System.Reflection.Metadata/AssemblyFileHandle.xml
+++ b/xml/System.Reflection.Metadata/AssemblyFileHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/AssemblyNameInfo.xml b/xml/System.Reflection.Metadata/AssemblyNameInfo.xml
index a916856d84c..bcbdf5b7a5b 100644
--- a/xml/System.Reflection.Metadata/AssemblyNameInfo.xml
+++ b/xml/System.Reflection.Metadata/AssemblyNameInfo.xml
@@ -35,12 +35,6 @@
         <AssemblyName>System.Reflection.Metadata</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String">
           <Attributes>
@@ -91,10 +85,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -143,10 +133,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -174,10 +160,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -253,12 +235,6 @@
         <AssemblyName>System.Reflection.Metadata</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.AssemblyName</ReturnType>
       </ReturnValue>
@@ -325,10 +301,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Version</ReturnType>
diff --git a/xml/System.Reflection.Metadata/AssemblyReference.xml b/xml/System.Reflection.Metadata/AssemblyReference.xml
index d17a772b9d1..79759f5539c 100644
--- a/xml/System.Reflection.Metadata/AssemblyReference.xml
+++ b/xml/System.Reflection.Metadata/AssemblyReference.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata/AssemblyReferenceHandle.xml b/xml/System.Reflection.Metadata/AssemblyReferenceHandle.xml
index da18d56d6b1..b4455fed3e9 100644
--- a/xml/System.Reflection.Metadata/AssemblyReferenceHandle.xml
+++ b/xml/System.Reflection.Metadata/AssemblyReferenceHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/BlobBuilder+Blobs.xml b/xml/System.Reflection.Metadata/BlobBuilder+Blobs.xml
index 89268b86b69..6e455baaedf 100644
--- a/xml/System.Reflection.Metadata/BlobBuilder+Blobs.xml
+++ b/xml/System.Reflection.Metadata/BlobBuilder+Blobs.xml
@@ -39,12 +39,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>To be added.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Reflection.Metadata/BlobBuilder.xml b/xml/System.Reflection.Metadata/BlobBuilder.xml
index c516d616676..a907b000e5c 100644
--- a/xml/System.Reflection.Metadata/BlobBuilder.xml
+++ b/xml/System.Reflection.Metadata/BlobBuilder.xml
@@ -31,10 +31,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -584,12 +580,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;System.Byte&gt;</ReturnType>
       </ReturnValue>
@@ -620,12 +610,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;System.Byte&gt;</ReturnType>
       </ReturnValue>
@@ -799,12 +783,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -874,12 +852,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -957,12 +929,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1095,12 +1061,6 @@ If the value lies between -268435456 (0xF000000) and 268435455 (0x0FFFFFFF), inc
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1593,12 +1553,6 @@ If the value lies between -268435456 (0xF000000) and 268435455 (0x0FFFFFFF), inc
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/BlobContentId.xml b/xml/System.Reflection.Metadata/BlobContentId.xml
index 7137e884f7e..35f69bfb50c 100644
--- a/xml/System.Reflection.Metadata/BlobContentId.xml
+++ b/xml/System.Reflection.Metadata/BlobContentId.xml
@@ -57,12 +57,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="id" Type="System.Byte[]" />
       </Parameters>
@@ -150,12 +144,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -231,12 +219,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Metadata.BlobContentId</ReturnType>
       </ReturnValue>
@@ -330,12 +312,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Func&lt;System.Collections.Generic.IEnumerable&lt;System.Reflection.Metadata.Blob&gt;,System.Reflection.Metadata.BlobContentId&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/BlobHandle.xml b/xml/System.Reflection.Metadata/BlobHandle.xml
index 54e9d09f94c..f62ee317b0a 100644
--- a/xml/System.Reflection.Metadata/BlobHandle.xml
+++ b/xml/System.Reflection.Metadata/BlobHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/BlobReader.xml b/xml/System.Reflection.Metadata/BlobReader.xml
index e08a4105d80..c8e287ac8c5 100644
--- a/xml/System.Reflection.Metadata/BlobReader.xml
+++ b/xml/System.Reflection.Metadata/BlobReader.xml
@@ -356,12 +356,6 @@ Blobs that contain references to other blobs are used in Portable PDB format, fo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -396,12 +390,6 @@ Blobs that contain references to other blobs are used in Portable PDB format, fo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -536,12 +524,6 @@ Blobs that contain references to other blobs are used in Portable PDB format, fo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -869,12 +851,6 @@ Decimal number is encoded in 13 bytes as follows:
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1132,12 +1108,6 @@ Defined as a 'SerString' in the ECMA CLI specification.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1174,12 +1144,6 @@ Defined as a 'SerString' in the ECMA CLI specification.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/BlobWriter.xml b/xml/System.Reflection.Metadata/BlobWriter.xml
index e753abe112b..36bb2916ffb 100644
--- a/xml/System.Reflection.Metadata/BlobWriter.xml
+++ b/xml/System.Reflection.Metadata/BlobWriter.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -470,12 +466,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;System.Byte&gt;</ReturnType>
       </ReturnValue>
@@ -505,12 +495,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;System.Byte&gt;</ReturnType>
       </ReturnValue>
@@ -641,12 +625,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -747,12 +725,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -866,12 +838,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1001,12 +967,6 @@ If the value lies between -268435456 (0xF000000) and 268435455 (0x0FFFFFFF), inc
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1385,12 +1345,6 @@ If the value lies between -268435456 (0xF000000) and 268435455 (0x0FFFFFFF), inc
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/ConstantHandle.xml b/xml/System.Reflection.Metadata/ConstantHandle.xml
index 36eb71bf71a..f878cb589af 100644
--- a/xml/System.Reflection.Metadata/ConstantHandle.xml
+++ b/xml/System.Reflection.Metadata/ConstantHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/CustomAttribute.xml b/xml/System.Reflection.Metadata/CustomAttribute.xml
index ac67d8492da..64ee19b38c6 100644
--- a/xml/System.Reflection.Metadata/CustomAttribute.xml
+++ b/xml/System.Reflection.Metadata/CustomAttribute.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about a custom attribute.</summary>
diff --git a/xml/System.Reflection.Metadata/CustomAttributeHandle.xml b/xml/System.Reflection.Metadata/CustomAttributeHandle.xml
index 38674b378c4..87d69a59bf7 100644
--- a/xml/System.Reflection.Metadata/CustomAttributeHandle.xml
+++ b/xml/System.Reflection.Metadata/CustomAttributeHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/CustomAttributeNamedArgument`1.xml b/xml/System.Reflection.Metadata/CustomAttributeNamedArgument`1.xml
index 543c5fc3533..37227fbc96e 100644
--- a/xml/System.Reflection.Metadata/CustomAttributeNamedArgument`1.xml
+++ b/xml/System.Reflection.Metadata/CustomAttributeNamedArgument`1.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TType">The type used to represent types of values decoded from the custom attribute signature.</typeparam>
@@ -173,10 +169,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TType</ReturnType>
diff --git a/xml/System.Reflection.Metadata/CustomAttributeTypedArgument`1.xml b/xml/System.Reflection.Metadata/CustomAttributeTypedArgument`1.xml
index 0d221a2d1e2..155e8b5b57e 100644
--- a/xml/System.Reflection.Metadata/CustomAttributeTypedArgument`1.xml
+++ b/xml/System.Reflection.Metadata/CustomAttributeTypedArgument`1.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TType">The type of the argument.</typeparam>
@@ -147,10 +143,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Reflection.Metadata/CustomDebugInformationHandle.xml b/xml/System.Reflection.Metadata/CustomDebugInformationHandle.xml
index e64954e9cbd..db198a69217 100644
--- a/xml/System.Reflection.Metadata/CustomDebugInformationHandle.xml
+++ b/xml/System.Reflection.Metadata/CustomDebugInformationHandle.xml
@@ -60,12 +60,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/DeclarativeSecurityAttributeHandle.xml b/xml/System.Reflection.Metadata/DeclarativeSecurityAttributeHandle.xml
index 1dd56798179..2d928042e0c 100644
--- a/xml/System.Reflection.Metadata/DeclarativeSecurityAttributeHandle.xml
+++ b/xml/System.Reflection.Metadata/DeclarativeSecurityAttributeHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/DocumentHandle.xml b/xml/System.Reflection.Metadata/DocumentHandle.xml
index cbe37d3cf50..884390a6431 100644
--- a/xml/System.Reflection.Metadata/DocumentHandle.xml
+++ b/xml/System.Reflection.Metadata/DocumentHandle.xml
@@ -60,12 +60,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/DocumentNameBlobHandle.xml b/xml/System.Reflection.Metadata/DocumentNameBlobHandle.xml
index 0d2d8de961c..f5599d179c9 100644
--- a/xml/System.Reflection.Metadata/DocumentNameBlobHandle.xml
+++ b/xml/System.Reflection.Metadata/DocumentNameBlobHandle.xml
@@ -70,12 +70,6 @@ The handle is a specialization of <xref:System.Reflection.Metadata.BlobHandle> a
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/EntityHandle.xml b/xml/System.Reflection.Metadata/EntityHandle.xml
index c50fa38a894..d74649c121a 100644
--- a/xml/System.Reflection.Metadata/EntityHandle.xml
+++ b/xml/System.Reflection.Metadata/EntityHandle.xml
@@ -99,12 +99,6 @@ Use <xref:System.Reflection.Metadata.EntityHandle> to store multiple kinds of en
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/EventDefinitionHandle.xml b/xml/System.Reflection.Metadata/EventDefinitionHandle.xml
index 8b9ef64bf11..dab56d3f716 100644
--- a/xml/System.Reflection.Metadata/EventDefinitionHandle.xml
+++ b/xml/System.Reflection.Metadata/EventDefinitionHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/ExportedType.xml b/xml/System.Reflection.Metadata/ExportedType.xml
index 45db4defed1..df0da73ab2c 100644
--- a/xml/System.Reflection.Metadata/ExportedType.xml
+++ b/xml/System.Reflection.Metadata/ExportedType.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata/ExportedTypeHandle.xml b/xml/System.Reflection.Metadata/ExportedTypeHandle.xml
index bd1f1797e64..7df9dd644dd 100644
--- a/xml/System.Reflection.Metadata/ExportedTypeHandle.xml
+++ b/xml/System.Reflection.Metadata/ExportedTypeHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/FieldDefinition.xml b/xml/System.Reflection.Metadata/FieldDefinition.xml
index 721a160e607..61453880aa9 100644
--- a/xml/System.Reflection.Metadata/FieldDefinition.xml
+++ b/xml/System.Reflection.Metadata/FieldDefinition.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata/FieldDefinitionHandle.xml b/xml/System.Reflection.Metadata/FieldDefinitionHandle.xml
index e04c9e82970..9b1f7b11ef5 100644
--- a/xml/System.Reflection.Metadata/FieldDefinitionHandle.xml
+++ b/xml/System.Reflection.Metadata/FieldDefinitionHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/GenericParameterConstraintHandle.xml b/xml/System.Reflection.Metadata/GenericParameterConstraintHandle.xml
index d7849c4754c..e0867133681 100644
--- a/xml/System.Reflection.Metadata/GenericParameterConstraintHandle.xml
+++ b/xml/System.Reflection.Metadata/GenericParameterConstraintHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/GenericParameterHandle.xml b/xml/System.Reflection.Metadata/GenericParameterHandle.xml
index de734129489..4583d524338 100644
--- a/xml/System.Reflection.Metadata/GenericParameterHandle.xml
+++ b/xml/System.Reflection.Metadata/GenericParameterHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/GuidHandle.xml b/xml/System.Reflection.Metadata/GuidHandle.xml
index fc61572e75a..cfe0c74556c 100644
--- a/xml/System.Reflection.Metadata/GuidHandle.xml
+++ b/xml/System.Reflection.Metadata/GuidHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/Handle.xml b/xml/System.Reflection.Metadata/Handle.xml
index 83638213c78..71759ee6adb 100644
--- a/xml/System.Reflection.Metadata/Handle.xml
+++ b/xml/System.Reflection.Metadata/Handle.xml
@@ -99,12 +99,6 @@ Use `Handle` to store multiple kinds of handles.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/HandleComparer.xml b/xml/System.Reflection.Metadata/HandleComparer.xml
index 436be2bdca3..e0a582c75ba 100644
--- a/xml/System.Reflection.Metadata/HandleComparer.xml
+++ b/xml/System.Reflection.Metadata/HandleComparer.xml
@@ -165,10 +165,6 @@ Returns 0 if and only if <xref:System.Reflection.Metadata.HandleComparer.Equals(
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Metadata.HandleComparer</ReturnType>
diff --git a/xml/System.Reflection.Metadata/IConstructedTypeProvider`1.xml b/xml/System.Reflection.Metadata/IConstructedTypeProvider`1.xml
index 76a524cdecb..e5ff0ff0a8c 100644
--- a/xml/System.Reflection.Metadata/IConstructedTypeProvider`1.xml
+++ b/xml/System.Reflection.Metadata/IConstructedTypeProvider`1.xml
@@ -34,12 +34,6 @@
       <InterfaceName>System.Reflection.Metadata.ISZArrayTypeProvider&lt;TType&gt;</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TType">To be added.</typeparam>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata/ICustomAttributeTypeProvider`1.xml b/xml/System.Reflection.Metadata/ICustomAttributeTypeProvider`1.xml
index fa79d7118d9..2f6a04a9c09 100644
--- a/xml/System.Reflection.Metadata/ICustomAttributeTypeProvider`1.xml
+++ b/xml/System.Reflection.Metadata/ICustomAttributeTypeProvider`1.xml
@@ -48,12 +48,6 @@
       <InterfaceName>System.Reflection.Metadata.ITypeProvider&lt;TType&gt;</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TType">To be added.</typeparam>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata/ISZArrayTypeProvider`1.xml b/xml/System.Reflection.Metadata/ISZArrayTypeProvider`1.xml
index a4570c25d4d..d38a66c9259 100644
--- a/xml/System.Reflection.Metadata/ISZArrayTypeProvider`1.xml
+++ b/xml/System.Reflection.Metadata/ISZArrayTypeProvider`1.xml
@@ -30,12 +30,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TType">To be added.</typeparam>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata/ISignatureTypeProvider`2.xml b/xml/System.Reflection.Metadata/ISignatureTypeProvider`2.xml
index 5f1bfb3b392..3ed247982f1 100644
--- a/xml/System.Reflection.Metadata/ISignatureTypeProvider`2.xml
+++ b/xml/System.Reflection.Metadata/ISignatureTypeProvider`2.xml
@@ -48,12 +48,6 @@
       <InterfaceName>System.Reflection.Metadata.ISZArrayTypeProvider&lt;TType&gt;</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TType">To be added.</typeparam>
     <typeparam name="TGenericContext">To be added.</typeparam>
diff --git a/xml/System.Reflection.Metadata/ISimpleTypeProvider`1.xml b/xml/System.Reflection.Metadata/ISimpleTypeProvider`1.xml
index 58da4abc0f5..fa3fc217916 100644
--- a/xml/System.Reflection.Metadata/ISimpleTypeProvider`1.xml
+++ b/xml/System.Reflection.Metadata/ISimpleTypeProvider`1.xml
@@ -29,12 +29,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TType">To be added.</typeparam>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata/ImageFormatLimitationException.xml b/xml/System.Reflection.Metadata/ImageFormatLimitationException.xml
index 5fd33732c4c..56bf4f746d5 100644
--- a/xml/System.Reflection.Metadata/ImageFormatLimitationException.xml
+++ b/xml/System.Reflection.Metadata/ImageFormatLimitationException.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The exception that is thrown when an attempt to write metadata exceeds a limit given by the format specification. For example, when the heap size limit is exceeded.</summary>
@@ -120,10 +116,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-3.0;netcore-3.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
diff --git a/xml/System.Reflection.Metadata/ImportScopeHandle.xml b/xml/System.Reflection.Metadata/ImportScopeHandle.xml
index ce893daa9a2..267073315be 100644
--- a/xml/System.Reflection.Metadata/ImportScopeHandle.xml
+++ b/xml/System.Reflection.Metadata/ImportScopeHandle.xml
@@ -60,12 +60,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/InterfaceImplementationHandle.xml b/xml/System.Reflection.Metadata/InterfaceImplementationHandle.xml
index c25f2323acc..f39bc9b7e3b 100644
--- a/xml/System.Reflection.Metadata/InterfaceImplementationHandle.xml
+++ b/xml/System.Reflection.Metadata/InterfaceImplementationHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/LocalConstantHandle.xml b/xml/System.Reflection.Metadata/LocalConstantHandle.xml
index ed3a6caabb8..24712c6d74f 100644
--- a/xml/System.Reflection.Metadata/LocalConstantHandle.xml
+++ b/xml/System.Reflection.Metadata/LocalConstantHandle.xml
@@ -60,12 +60,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/LocalScopeHandle.xml b/xml/System.Reflection.Metadata/LocalScopeHandle.xml
index cae85f2c758..e3275181633 100644
--- a/xml/System.Reflection.Metadata/LocalScopeHandle.xml
+++ b/xml/System.Reflection.Metadata/LocalScopeHandle.xml
@@ -60,12 +60,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/LocalVariableHandle.xml b/xml/System.Reflection.Metadata/LocalVariableHandle.xml
index 855d4a6a26a..63b304bb68e 100644
--- a/xml/System.Reflection.Metadata/LocalVariableHandle.xml
+++ b/xml/System.Reflection.Metadata/LocalVariableHandle.xml
@@ -60,12 +60,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/ManifestResourceHandle.xml b/xml/System.Reflection.Metadata/ManifestResourceHandle.xml
index 8a2064eea03..001b70e31cd 100644
--- a/xml/System.Reflection.Metadata/ManifestResourceHandle.xml
+++ b/xml/System.Reflection.Metadata/ManifestResourceHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/MemberReference.xml b/xml/System.Reflection.Metadata/MemberReference.xml
index bcf8c3492da..76a4732b781 100644
--- a/xml/System.Reflection.Metadata/MemberReference.xml
+++ b/xml/System.Reflection.Metadata/MemberReference.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata/MemberReferenceHandle.xml b/xml/System.Reflection.Metadata/MemberReferenceHandle.xml
index 390846bcf1d..c5636edb88f 100644
--- a/xml/System.Reflection.Metadata/MemberReferenceHandle.xml
+++ b/xml/System.Reflection.Metadata/MemberReferenceHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/MetadataReader.xml b/xml/System.Reflection.Metadata/MetadataReader.xml
index 2978975869c..736d314204c 100644
--- a/xml/System.Reflection.Metadata/MetadataReader.xml
+++ b/xml/System.Reflection.Metadata/MetadataReader.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Reads metadata as defined by the ECMA 335 CLI specification.</summary>
@@ -75,12 +71,6 @@ This example shows how to create <xref:System.Reflection.Metadata.MetadataReader
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="metadata" Type="System.Byte*" />
         <Parameter Name="length" Type="System.Int32" />
@@ -120,12 +110,6 @@ The memory is owned by the caller. It must be kept alive and unmodified througho
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="metadata" Type="System.Byte*" />
         <Parameter Name="length" Type="System.Int32" />
@@ -170,12 +154,6 @@ Use <xref:System.Reflection.Metadata.PEReaderExtensions.GetMetadataReader(System
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="metadata" Type="System.Byte*" />
         <Parameter Name="length" Type="System.Int32" />
@@ -360,10 +338,6 @@ Use <xref:System.Reflection.Metadata.PEReaderExtensions.GetMetadataReader(System
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Metadata.DebugMetadataHeader</ReturnType>
@@ -711,12 +685,6 @@ Use <xref:System.Reflection.Metadata.PEReaderExtensions.GetMetadataReader(System
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;System.Byte&gt;</ReturnType>
       </ReturnValue>
@@ -2460,10 +2428,6 @@ Use <xref:System.Reflection.Metadata.PEReaderExtensions.GetMetadataReader(System
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte*</ReturnType>
diff --git a/xml/System.Reflection.Metadata/MetadataReaderProvider.xml b/xml/System.Reflection.Metadata/MetadataReaderProvider.xml
index 819d03328cb..fcc17ad50fe 100644
--- a/xml/System.Reflection.Metadata/MetadataReaderProvider.xml
+++ b/xml/System.Reflection.Metadata/MetadataReaderProvider.xml
@@ -198,12 +198,6 @@ The content of the blob is not read during the construction of the <xref:System.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Metadata.MetadataReaderProvider</ReturnType>
       </ReturnValue>
@@ -349,12 +343,6 @@ The content of the blob is not read during the construction of the <xref:System.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Metadata.MetadataReaderProvider</ReturnType>
       </ReturnValue>
@@ -410,12 +398,6 @@ If <xref:System.Reflection.Metadata.MetadataStreamOptions.PrefetchMetadata?displ
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Metadata.MetadataReader</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/MetadataStringComparer.xml b/xml/System.Reflection.Metadata/MetadataStringComparer.xml
index 73850a3d90c..0826912ae30 100644
--- a/xml/System.Reflection.Metadata/MetadataStringComparer.xml
+++ b/xml/System.Reflection.Metadata/MetadataStringComparer.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides string comparison helpers to query strings in metadata while avoiding allocation if possible.</summary>
diff --git a/xml/System.Reflection.Metadata/MetadataStringDecoder.xml b/xml/System.Reflection.Metadata/MetadataStringDecoder.xml
index c5f6920515b..cd45569c2b9 100644
--- a/xml/System.Reflection.Metadata/MetadataStringDecoder.xml
+++ b/xml/System.Reflection.Metadata/MetadataStringDecoder.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the <see cref="T:System.Reflection.Metadata.MetadataReader" /> with a custom mechanism for decoding byte sequences in metadata that represent text.</summary>
@@ -169,12 +165,6 @@ To cache and reuse existing strings, create a derived class and override <xref:S
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/MetadataUpdateHandlerAttribute.xml b/xml/System.Reflection.Metadata/MetadataUpdateHandlerAttribute.xml
index c0080403a8a..ca8b2652d39 100644
--- a/xml/System.Reflection.Metadata/MetadataUpdateHandlerAttribute.xml
+++ b/xml/System.Reflection.Metadata/MetadataUpdateHandlerAttribute.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates that a type that should receive notifications of metadata updates.</summary>
diff --git a/xml/System.Reflection.Metadata/MethodBodyBlock.xml b/xml/System.Reflection.Metadata/MethodBodyBlock.xml
index 24820194797..a5acb104f9f 100644
--- a/xml/System.Reflection.Metadata/MethodBodyBlock.xml
+++ b/xml/System.Reflection.Metadata/MethodBodyBlock.xml
@@ -63,12 +63,6 @@ This example shows how to read method bodies for all methods in the specified ty
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Metadata.MethodBodyBlock</ReturnType>
       </ReturnValue>
@@ -136,12 +130,6 @@ This example shows how to read method bodies for all methods in the specified ty
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/MethodDebugInformationHandle.xml b/xml/System.Reflection.Metadata/MethodDebugInformationHandle.xml
index 7e1958e8f6f..e230808497d 100644
--- a/xml/System.Reflection.Metadata/MethodDebugInformationHandle.xml
+++ b/xml/System.Reflection.Metadata/MethodDebugInformationHandle.xml
@@ -60,12 +60,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/MethodDefinition.xml b/xml/System.Reflection.Metadata/MethodDefinition.xml
index a6d91a0262d..4792d40c285 100644
--- a/xml/System.Reflection.Metadata/MethodDefinition.xml
+++ b/xml/System.Reflection.Metadata/MethodDefinition.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata/MethodDefinitionHandle.xml b/xml/System.Reflection.Metadata/MethodDefinitionHandle.xml
index 86b7304d124..e55935a8cbf 100644
--- a/xml/System.Reflection.Metadata/MethodDefinitionHandle.xml
+++ b/xml/System.Reflection.Metadata/MethodDefinitionHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/MethodImplementationHandle.xml b/xml/System.Reflection.Metadata/MethodImplementationHandle.xml
index 3601a6b6457..128738f15ea 100644
--- a/xml/System.Reflection.Metadata/MethodImplementationHandle.xml
+++ b/xml/System.Reflection.Metadata/MethodImplementationHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/MethodSignature`1.xml b/xml/System.Reflection.Metadata/MethodSignature`1.xml
index d560a407077..b411ea3cc10 100644
--- a/xml/System.Reflection.Metadata/MethodSignature`1.xml
+++ b/xml/System.Reflection.Metadata/MethodSignature`1.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TType">The method type.</typeparam>
diff --git a/xml/System.Reflection.Metadata/MethodSpecification.xml b/xml/System.Reflection.Metadata/MethodSpecification.xml
index 4707c0c393a..8b2c293fb43 100644
--- a/xml/System.Reflection.Metadata/MethodSpecification.xml
+++ b/xml/System.Reflection.Metadata/MethodSpecification.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata/MethodSpecificationHandle.xml b/xml/System.Reflection.Metadata/MethodSpecificationHandle.xml
index 5b21ff45ae5..42a804f74cd 100644
--- a/xml/System.Reflection.Metadata/MethodSpecificationHandle.xml
+++ b/xml/System.Reflection.Metadata/MethodSpecificationHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/ModuleDefinitionHandle.xml b/xml/System.Reflection.Metadata/ModuleDefinitionHandle.xml
index 6c7f6749f2c..8d4c80ee916 100644
--- a/xml/System.Reflection.Metadata/ModuleDefinitionHandle.xml
+++ b/xml/System.Reflection.Metadata/ModuleDefinitionHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/ModuleReferenceHandle.xml b/xml/System.Reflection.Metadata/ModuleReferenceHandle.xml
index b3b08b1245d..9905b98b76c 100644
--- a/xml/System.Reflection.Metadata/ModuleReferenceHandle.xml
+++ b/xml/System.Reflection.Metadata/ModuleReferenceHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/NamespaceDefinitionHandle.xml b/xml/System.Reflection.Metadata/NamespaceDefinitionHandle.xml
index aab45d29c1c..613c6920750 100644
--- a/xml/System.Reflection.Metadata/NamespaceDefinitionHandle.xml
+++ b/xml/System.Reflection.Metadata/NamespaceDefinitionHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/PEReaderExtensions.xml b/xml/System.Reflection.Metadata/PEReaderExtensions.xml
index 530dd89dc27..d3b58c0810f 100644
--- a/xml/System.Reflection.Metadata/PEReaderExtensions.xml
+++ b/xml/System.Reflection.Metadata/PEReaderExtensions.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata/ParameterHandle.xml b/xml/System.Reflection.Metadata/ParameterHandle.xml
index 2843db7136b..00feb0c4571 100644
--- a/xml/System.Reflection.Metadata/ParameterHandle.xml
+++ b/xml/System.Reflection.Metadata/ParameterHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/PropertyDefinition.xml b/xml/System.Reflection.Metadata/PropertyDefinition.xml
index 1271d7b6a66..f02baa62250 100644
--- a/xml/System.Reflection.Metadata/PropertyDefinition.xml
+++ b/xml/System.Reflection.Metadata/PropertyDefinition.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata/PropertyDefinitionHandle.xml b/xml/System.Reflection.Metadata/PropertyDefinitionHandle.xml
index ab45dc4b115..6c13d482955 100644
--- a/xml/System.Reflection.Metadata/PropertyDefinitionHandle.xml
+++ b/xml/System.Reflection.Metadata/PropertyDefinitionHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/SequencePoint.xml b/xml/System.Reflection.Metadata/SequencePoint.xml
index 1b42269690f..7404b57dcbe 100644
--- a/xml/System.Reflection.Metadata/SequencePoint.xml
+++ b/xml/System.Reflection.Metadata/SequencePoint.xml
@@ -160,12 +160,6 @@ This example shows how to read sequence points of the method defined by the meta
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/SignatureHeader.xml b/xml/System.Reflection.Metadata/SignatureHeader.xml
index 4b69f6a8562..c20f5b6a89c 100644
--- a/xml/System.Reflection.Metadata/SignatureHeader.xml
+++ b/xml/System.Reflection.Metadata/SignatureHeader.xml
@@ -220,12 +220,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -574,12 +568,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/StandaloneSignature.xml b/xml/System.Reflection.Metadata/StandaloneSignature.xml
index 40aad3cffbe..51ae49dbb28 100644
--- a/xml/System.Reflection.Metadata/StandaloneSignature.xml
+++ b/xml/System.Reflection.Metadata/StandaloneSignature.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata/StandaloneSignatureHandle.xml b/xml/System.Reflection.Metadata/StandaloneSignatureHandle.xml
index 4e5bb67ee8d..f370841fb71 100644
--- a/xml/System.Reflection.Metadata/StandaloneSignatureHandle.xml
+++ b/xml/System.Reflection.Metadata/StandaloneSignatureHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/StringHandle.xml b/xml/System.Reflection.Metadata/StringHandle.xml
index c6185bf86ac..c891cc8198e 100644
--- a/xml/System.Reflection.Metadata/StringHandle.xml
+++ b/xml/System.Reflection.Metadata/StringHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/TypeDefinitionHandle.xml b/xml/System.Reflection.Metadata/TypeDefinitionHandle.xml
index 8ce6ef819c4..ce9672af0a5 100644
--- a/xml/System.Reflection.Metadata/TypeDefinitionHandle.xml
+++ b/xml/System.Reflection.Metadata/TypeDefinitionHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/TypeName.xml b/xml/System.Reflection.Metadata/TypeName.xml
index add7b0c746a..db4722576e3 100644
--- a/xml/System.Reflection.Metadata/TypeName.xml
+++ b/xml/System.Reflection.Metadata/TypeName.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -49,10 +45,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Metadata.AssemblyNameInfo</ReturnType>
@@ -647,12 +639,6 @@
         <AssemblyName>System.Reflection.Metadata</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Metadata.TypeName</ReturnType>
         <Attributes>
@@ -694,12 +680,6 @@
         <AssemblyName>System.Reflection.Metadata</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/TypeReferenceHandle.xml b/xml/System.Reflection.Metadata/TypeReferenceHandle.xml
index cf8fd1ff6c8..803e9a9f209 100644
--- a/xml/System.Reflection.Metadata/TypeReferenceHandle.xml
+++ b/xml/System.Reflection.Metadata/TypeReferenceHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/TypeSpecification.xml b/xml/System.Reflection.Metadata/TypeSpecification.xml
index a46e33f7f1f..4f46ba56b99 100644
--- a/xml/System.Reflection.Metadata/TypeSpecification.xml
+++ b/xml/System.Reflection.Metadata/TypeSpecification.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection.Metadata/TypeSpecificationHandle.xml b/xml/System.Reflection.Metadata/TypeSpecificationHandle.xml
index 7cf2dbf3b1f..8f6e73b48a2 100644
--- a/xml/System.Reflection.Metadata/TypeSpecificationHandle.xml
+++ b/xml/System.Reflection.Metadata/TypeSpecificationHandle.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.Metadata/UserStringHandle.xml b/xml/System.Reflection.Metadata/UserStringHandle.xml
index 06a6e027578..94ed1c8002d 100644
--- a/xml/System.Reflection.Metadata/UserStringHandle.xml
+++ b/xml/System.Reflection.Metadata/UserStringHandle.xml
@@ -70,12 +70,6 @@ The handle is 32-bits wide.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.PortableExecutable/CodeViewDebugDirectoryData.xml b/xml/System.Reflection.PortableExecutable/CodeViewDebugDirectoryData.xml
index e4c236adce2..f3279a47a5d 100644
--- a/xml/System.Reflection.PortableExecutable/CodeViewDebugDirectoryData.xml
+++ b/xml/System.Reflection.PortableExecutable/CodeViewDebugDirectoryData.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about a Program Debug Database (PDB) file.</summary>
diff --git a/xml/System.Reflection.PortableExecutable/DebugDirectoryBuilder.xml b/xml/System.Reflection.PortableExecutable/DebugDirectoryBuilder.xml
index eadadf66954..0f6b49d6be5 100644
--- a/xml/System.Reflection.PortableExecutable/DebugDirectoryBuilder.xml
+++ b/xml/System.Reflection.PortableExecutable/DebugDirectoryBuilder.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -274,12 +270,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.PortableExecutable/ManagedPEBuilder.xml b/xml/System.Reflection.PortableExecutable/ManagedPEBuilder.xml
index 4400664515a..31c1a391020 100644
--- a/xml/System.Reflection.PortableExecutable/ManagedPEBuilder.xml
+++ b/xml/System.Reflection.PortableExecutable/ManagedPEBuilder.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -56,12 +52,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="header" Type="System.Reflection.PortableExecutable.PEHeaderBuilder">
           <Attributes>
@@ -138,12 +128,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;System.Reflection.PortableExecutable.PEBuilder+Section&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.PortableExecutable/PEBuilder.xml b/xml/System.Reflection.PortableExecutable/PEBuilder.xml
index e8480f0688a..bcf71d8356e 100644
--- a/xml/System.Reflection.PortableExecutable/PEBuilder.xml
+++ b/xml/System.Reflection.PortableExecutable/PEBuilder.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -94,12 +90,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;System.Reflection.PortableExecutable.PEBuilder+Section&gt;</ReturnType>
       </ReturnValue>
@@ -158,12 +148,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;System.Reflection.PortableExecutable.PEBuilder+Section&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.PortableExecutable/PEHeaderBuilder.xml b/xml/System.Reflection.PortableExecutable/PEHeaderBuilder.xml
index 466c7f850b3..714bf5953ec 100644
--- a/xml/System.Reflection.PortableExecutable/PEHeaderBuilder.xml
+++ b/xml/System.Reflection.PortableExecutable/PEHeaderBuilder.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the header for a portable executable (PE) file.</summary>
diff --git a/xml/System.Reflection.PortableExecutable/PEHeaders.xml b/xml/System.Reflection.PortableExecutable/PEHeaders.xml
index cdd4ad0a778..52415ae919a 100644
--- a/xml/System.Reflection.PortableExecutable/PEHeaders.xml
+++ b/xml/System.Reflection.PortableExecutable/PEHeaders.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines a type that reads PE (Portable Executable) and COFF (Common Object File Format) headers from a stream.</summary>
@@ -240,10 +236,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.PortableExecutable.CorHeader</ReturnType>
@@ -529,10 +521,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.PortableExecutable.PEHeader</ReturnType>
@@ -607,10 +595,6 @@ For more information and an example, see the <xref:System.Reflection.PortableExe
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;System.Reflection.PortableExecutable.SectionHeader&gt;</ReturnType>
diff --git a/xml/System.Reflection.PortableExecutable/PEReader.xml b/xml/System.Reflection.PortableExecutable/PEReader.xml
index 86f6f4e746d..252bb7858d8 100644
--- a/xml/System.Reflection.PortableExecutable/PEReader.xml
+++ b/xml/System.Reflection.PortableExecutable/PEReader.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a reader for Portable Executable format (PE) files.</summary>
@@ -72,12 +68,6 @@ The implementation is thread-safe. That is, multiple threads can read data from
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="peImage" Type="System.Collections.Immutable.ImmutableArray&lt;System.Byte&gt;" />
       </Parameters>
@@ -157,12 +147,6 @@ Ownership of the stream is transferred to the <xref:System.Reflection.PortableEx
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="peImage" Type="System.Byte*" />
         <Parameter Name="size" Type="System.Int32" />
@@ -258,12 +242,6 @@ If `options` includes <xref:System.Reflection.PortableExecutable.PEStreamOptions
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="peImage" Type="System.Byte*" Index="0" FrameworkAlternate="netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
         <Parameter Name="size" Type="System.Int32" Index="1" FrameworkAlternate="netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
@@ -724,12 +702,6 @@ The property returns `false` if the <xref:System.Reflection.PortableExecutable.P
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Immutable.ImmutableArray&lt;System.Reflection.PortableExecutable.DebugDirectoryEntry&gt;</ReturnType>
       </ReturnValue>
@@ -834,12 +806,6 @@ The property returns `false` if the <xref:System.Reflection.PortableExecutable.P
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.PortableExecutable/PdbChecksumDebugDirectoryData.xml b/xml/System.Reflection.PortableExecutable/PdbChecksumDebugDirectoryData.xml
index 8a1b0c4a6f2..0953e6b8371 100644
--- a/xml/System.Reflection.PortableExecutable/PdbChecksumDebugDirectoryData.xml
+++ b/xml/System.Reflection.PortableExecutable/PdbChecksumDebugDirectoryData.xml
@@ -61,10 +61,6 @@ For more information, see: https://github.com/dotnet/runtime/blob/main/docs/desi
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Reflection.PortableExecutable/ResourceSectionBuilder.xml b/xml/System.Reflection.PortableExecutable/ResourceSectionBuilder.xml
index 89069a1947a..2363b449d12 100644
--- a/xml/System.Reflection.PortableExecutable/ResourceSectionBuilder.xml
+++ b/xml/System.Reflection.PortableExecutable/ResourceSectionBuilder.xml
@@ -70,12 +70,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection.PortableExecutable/SectionHeader.xml b/xml/System.Reflection.PortableExecutable/SectionHeader.xml
index 02848cdfb05..757fb913f76 100644
--- a/xml/System.Reflection.PortableExecutable/SectionHeader.xml
+++ b/xml/System.Reflection.PortableExecutable/SectionHeader.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about the section header of a PE/COFF file.</summary>
diff --git a/xml/System.Reflection/AmbiguousMatchException.xml b/xml/System.Reflection/AmbiguousMatchException.xml
index be739642299..10e573f8cb8 100644
--- a/xml/System.Reflection/AmbiguousMatchException.xml
+++ b/xml/System.Reflection/AmbiguousMatchException.xml
@@ -67,10 +67,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Reflection/Assembly.xml b/xml/System.Reflection/Assembly.xml
index 4b51e0b8802..f1e55a92b21 100644
--- a/xml/System.Reflection/Assembly.xml
+++ b/xml/System.Reflection/Assembly.xml
@@ -92,10 +92,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -266,10 +262,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -558,10 +550,6 @@ In .NET 5 and later versions, for bundled assemblies, this property throws an ex
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Assembly.CreateInstance is not supported with trimming. Use Type.GetType instead.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Assembly.CreateInstance is not supported with trimming. Use Type.GetType instead.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -667,12 +655,6 @@ In .NET 5 and later versions, for bundled assemblies, this property throws an ex
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -852,10 +834,6 @@ In .NET 5 and later versions, for bundled assemblies, this property throws an ex
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
@@ -906,12 +884,6 @@ In .NET 5 and later versions, for bundled assemblies, this property throws an ex
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1137,10 +1109,6 @@ In .NET 5 and later versions, for bundled assemblies, this property throws an ex
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1575,10 +1543,6 @@ In .NET 5 and later versions, for bundled assemblies, this property throws an ex
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -5742,14 +5706,6 @@ In .NET 5 and later versions, for bundled assemblies, the value returned is an e
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[add: System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;add: System.Security.SecurityCritical&gt;]</AttributeName>
@@ -5854,12 +5810,6 @@ In .NET 5 and later versions, for bundled assemblies, the value returned is an e
       <AssemblyInfo>
         <AssemblyName>System.Reflection</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5909,12 +5859,6 @@ In .NET 5 and later versions, for bundled assemblies, the value returned is an e
       <AssemblyInfo>
         <AssemblyName>System.Reflection</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6360,12 +6304,6 @@ In .NET 5 and later versions, for bundled assemblies, the value returned is an e
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection/AssemblyCompanyAttribute.xml b/xml/System.Reflection/AssemblyCompanyAttribute.xml
index ea6ed414380..25aef610084 100644
--- a/xml/System.Reflection/AssemblyCompanyAttribute.xml
+++ b/xml/System.Reflection/AssemblyCompanyAttribute.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)&gt;]</AttributeName>
diff --git a/xml/System.Reflection/AssemblyConfigurationAttribute.xml b/xml/System.Reflection/AssemblyConfigurationAttribute.xml
index c90dd06ec4b..7deffa01bee 100644
--- a/xml/System.Reflection/AssemblyConfigurationAttribute.xml
+++ b/xml/System.Reflection/AssemblyConfigurationAttribute.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)&gt;]</AttributeName>
diff --git a/xml/System.Reflection/AssemblyCopyrightAttribute.xml b/xml/System.Reflection/AssemblyCopyrightAttribute.xml
index 530230327b4..362d88a61b9 100644
--- a/xml/System.Reflection/AssemblyCopyrightAttribute.xml
+++ b/xml/System.Reflection/AssemblyCopyrightAttribute.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)&gt;]</AttributeName>
diff --git a/xml/System.Reflection/AssemblyCultureAttribute.xml b/xml/System.Reflection/AssemblyCultureAttribute.xml
index 59d56794e64..b5c1dbd3b37 100644
--- a/xml/System.Reflection/AssemblyCultureAttribute.xml
+++ b/xml/System.Reflection/AssemblyCultureAttribute.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)&gt;]</AttributeName>
diff --git a/xml/System.Reflection/AssemblyDefaultAliasAttribute.xml b/xml/System.Reflection/AssemblyDefaultAliasAttribute.xml
index be794dabdaa..b4729552561 100644
--- a/xml/System.Reflection/AssemblyDefaultAliasAttribute.xml
+++ b/xml/System.Reflection/AssemblyDefaultAliasAttribute.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)&gt;]</AttributeName>
diff --git a/xml/System.Reflection/AssemblyDescriptionAttribute.xml b/xml/System.Reflection/AssemblyDescriptionAttribute.xml
index 8ec1e91df10..04294562c56 100644
--- a/xml/System.Reflection/AssemblyDescriptionAttribute.xml
+++ b/xml/System.Reflection/AssemblyDescriptionAttribute.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)&gt;]</AttributeName>
diff --git a/xml/System.Reflection/AssemblyExtensions.xml b/xml/System.Reflection/AssemblyExtensions.xml
index 926f92e2388..c341a34dece 100644
--- a/xml/System.Reflection/AssemblyExtensions.xml
+++ b/xml/System.Reflection/AssemblyExtensions.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection/AssemblyFileVersionAttribute.xml b/xml/System.Reflection/AssemblyFileVersionAttribute.xml
index ff69e5b3292..b06159657f5 100644
--- a/xml/System.Reflection/AssemblyFileVersionAttribute.xml
+++ b/xml/System.Reflection/AssemblyFileVersionAttribute.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)&gt;]</AttributeName>
diff --git a/xml/System.Reflection/AssemblyInformationalVersionAttribute.xml b/xml/System.Reflection/AssemblyInformationalVersionAttribute.xml
index 9c083acec60..d0a666640d5 100644
--- a/xml/System.Reflection/AssemblyInformationalVersionAttribute.xml
+++ b/xml/System.Reflection/AssemblyInformationalVersionAttribute.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)&gt;]</AttributeName>
diff --git a/xml/System.Reflection/AssemblyKeyFileAttribute.xml b/xml/System.Reflection/AssemblyKeyFileAttribute.xml
index b7d821a0117..9923e6f4abc 100644
--- a/xml/System.Reflection/AssemblyKeyFileAttribute.xml
+++ b/xml/System.Reflection/AssemblyKeyFileAttribute.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)&gt;]</AttributeName>
diff --git a/xml/System.Reflection/AssemblyKeyNameAttribute.xml b/xml/System.Reflection/AssemblyKeyNameAttribute.xml
index 24cca4bfa49..de6d6210336 100644
--- a/xml/System.Reflection/AssemblyKeyNameAttribute.xml
+++ b/xml/System.Reflection/AssemblyKeyNameAttribute.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)&gt;]</AttributeName>
diff --git a/xml/System.Reflection/AssemblyMetadataAttribute.xml b/xml/System.Reflection/AssemblyMetadataAttribute.xml
index 16c59405d25..c8c6c41e035 100644
--- a/xml/System.Reflection/AssemblyMetadataAttribute.xml
+++ b/xml/System.Reflection/AssemblyMetadataAttribute.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines a key/value metadata pair for the decorated assembly.</summary>
@@ -195,10 +191,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Reflection/AssemblyName.xml b/xml/System.Reflection/AssemblyName.xml
index f73df1fc7d8..0b40bf7156e 100644
--- a/xml/System.Reflection/AssemblyName.xml
+++ b/xml/System.Reflection/AssemblyName.xml
@@ -84,10 +84,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -308,10 +304,6 @@ ExampleAssembly, Version=1.0.0.0, Culture=en, PublicKeyToken=a5d015c7d5a0b012
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -387,12 +379,6 @@ Note: In <see href="https://go.microsoft.com/fwlink/?LinkID=247912">.NET for Win
       <AssemblyInfo>
         <AssemblyName>System.Reflection</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -796,10 +782,6 @@ Note: In <see href="https://go.microsoft.com/fwlink/?LinkID=247912">.NET for Win
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[get: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -874,10 +856,6 @@ mylib, Version=1.2.1900.0, Culture=neutral, PublicKeyToken=a14f3033def15840
         <AssemblyName>System.Reflection</AssemblyName>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -968,10 +946,6 @@ mylib, Version=1.2.1900.0, Culture=neutral, PublicKeyToken=a14f3033def15840
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -1868,12 +1842,6 @@ mylib, Version=1.2.1900.0, Culture=neutral, PublicKeyToken=a14f3033def15840
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection/AssemblyNameProxy.xml b/xml/System.Reflection/AssemblyNameProxy.xml
index 37b8b8cfdf9..e560142f0bd 100644
--- a/xml/System.Reflection/AssemblyNameProxy.xml
+++ b/xml/System.Reflection/AssemblyNameProxy.xml
@@ -132,10 +132,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Reflection/AssemblyProductAttribute.xml b/xml/System.Reflection/AssemblyProductAttribute.xml
index 4626506c9de..97e536d7ea5 100644
--- a/xml/System.Reflection/AssemblyProductAttribute.xml
+++ b/xml/System.Reflection/AssemblyProductAttribute.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)&gt;]</AttributeName>
diff --git a/xml/System.Reflection/AssemblySignatureKeyAttribute.xml b/xml/System.Reflection/AssemblySignatureKeyAttribute.xml
index fccfd8d309a..e18926bc989 100644
--- a/xml/System.Reflection/AssemblySignatureKeyAttribute.xml
+++ b/xml/System.Reflection/AssemblySignatureKeyAttribute.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides migration from an older, simpler strong name key to a larger key with a stronger hashing algorithm.</summary>
diff --git a/xml/System.Reflection/AssemblyTitleAttribute.xml b/xml/System.Reflection/AssemblyTitleAttribute.xml
index c7ad595d481..4d31af4a108 100644
--- a/xml/System.Reflection/AssemblyTitleAttribute.xml
+++ b/xml/System.Reflection/AssemblyTitleAttribute.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)&gt;]</AttributeName>
diff --git a/xml/System.Reflection/AssemblyTrademarkAttribute.xml b/xml/System.Reflection/AssemblyTrademarkAttribute.xml
index c00bd53b159..36d64cf5b70 100644
--- a/xml/System.Reflection/AssemblyTrademarkAttribute.xml
+++ b/xml/System.Reflection/AssemblyTrademarkAttribute.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)&gt;]</AttributeName>
diff --git a/xml/System.Reflection/AssemblyVersionAttribute.xml b/xml/System.Reflection/AssemblyVersionAttribute.xml
index d55321b131e..8a239c61136 100644
--- a/xml/System.Reflection/AssemblyVersionAttribute.xml
+++ b/xml/System.Reflection/AssemblyVersionAttribute.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Assembly, AllowMultiple=false)&gt;]</AttributeName>
diff --git a/xml/System.Reflection/Binder.xml b/xml/System.Reflection/Binder.xml
index fae45877223..8d9089ad5f5 100644
--- a/xml/System.Reflection/Binder.xml
+++ b/xml/System.Reflection/Binder.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDual)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDual)&gt;]</AttributeName>
@@ -240,12 +236,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodBase</ReturnType>
       </ReturnValue>
@@ -557,12 +547,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.PropertyInfo</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection/ConstructorInfo.xml b/xml/System.Reflection/ConstructorInfo.xml
index 1d29d6aa36e..7462a0539d6 100644
--- a/xml/System.Reflection/ConstructorInfo.xml
+++ b/xml/System.Reflection/ConstructorInfo.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -401,10 +397,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Diagnostics.DebuggerStepThrough]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerStepThrough&gt;]</AttributeName>
diff --git a/xml/System.Reflection/ConstructorInvoker.xml b/xml/System.Reflection/ConstructorInvoker.xml
index ebce5d2fc51..0acdac91c66 100644
--- a/xml/System.Reflection/ConstructorInvoker.xml
+++ b/xml/System.Reflection/ConstructorInvoker.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods to invoke the method specified by the provided <see cref="T:System.Reflection.ConstructorInfo" />.</summary>
@@ -165,12 +161,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
         <Attributes>
@@ -206,12 +196,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
         <Attributes>
@@ -249,12 +233,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
         <Attributes>
diff --git a/xml/System.Reflection/CustomAttributeData.xml b/xml/System.Reflection/CustomAttributeData.xml
index 013883fe4a2..5ce79c2152a 100644
--- a/xml/System.Reflection/CustomAttributeData.xml
+++ b/xml/System.Reflection/CustomAttributeData.xml
@@ -64,10 +64,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -413,12 +409,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Reflection</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection/CustomAttributeExtensions.xml b/xml/System.Reflection/CustomAttributeExtensions.xml
index a86be24b5a2..aa6afe69db0 100644
--- a/xml/System.Reflection/CustomAttributeExtensions.xml
+++ b/xml/System.Reflection/CustomAttributeExtensions.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains static methods for retrieving custom attributes.</summary>
diff --git a/xml/System.Reflection/CustomAttributeFormatException.xml b/xml/System.Reflection/CustomAttributeFormatException.xml
index 8651fc0e591..1a76fb25b7a 100644
--- a/xml/System.Reflection/CustomAttributeFormatException.xml
+++ b/xml/System.Reflection/CustomAttributeFormatException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -229,10 +225,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Reflection/CustomAttributeNamedArgument.xml b/xml/System.Reflection/CustomAttributeNamedArgument.xml
index e3fac519bb5..646a88f5c2b 100644
--- a/xml/System.Reflection/CustomAttributeNamedArgument.xml
+++ b/xml/System.Reflection/CustomAttributeNamedArgument.xml
@@ -73,10 +73,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -280,12 +276,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection/CustomAttributeTypedArgument.xml b/xml/System.Reflection/CustomAttributeTypedArgument.xml
index 04df158c561..84d7f84e604 100644
--- a/xml/System.Reflection/CustomAttributeTypedArgument.xml
+++ b/xml/System.Reflection/CustomAttributeTypedArgument.xml
@@ -73,10 +73,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -348,12 +344,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -657,10 +647,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Reflection/DefaultMemberAttribute.xml b/xml/System.Reflection/DefaultMemberAttribute.xml
index 2176b2a330f..42a53e58bf4 100644
--- a/xml/System.Reflection/DefaultMemberAttribute.xml
+++ b/xml/System.Reflection/DefaultMemberAttribute.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Reflection/DispatchProxy.xml b/xml/System.Reflection/DispatchProxy.xml
index e2f253a0aa4..c4ce61cd229 100644
--- a/xml/System.Reflection/DispatchProxy.xml
+++ b/xml/System.Reflection/DispatchProxy.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a mechanism for instantiating proxy objects and handling their method dispatch.</summary>
@@ -247,12 +243,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection/EventInfo.xml b/xml/System.Reflection/EventInfo.xml
index 7ef56bdb8a0..8f7e6fcf9ae 100644
--- a/xml/System.Reflection/EventInfo.xml
+++ b/xml/System.Reflection/EventInfo.xml
@@ -70,10 +70,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -741,12 +737,6 @@ add_<EventName>(<EventHandlerType> handler)
       <AssemblyInfo>
         <AssemblyName>System.Reflection</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo[]</ReturnType>
       </ReturnValue>
@@ -807,12 +797,6 @@ add_<EventName>(<EventHandlerType> handler)
       <AssemblyInfo>
         <AssemblyName>System.Reflection</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection/EventInfoExtensions.xml b/xml/System.Reflection/EventInfoExtensions.xml
index 3c7bee79a0a..e9f32794fe0 100644
--- a/xml/System.Reflection/EventInfoExtensions.xml
+++ b/xml/System.Reflection/EventInfoExtensions.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection/ExceptionHandlingClause.xml b/xml/System.Reflection/ExceptionHandlingClause.xml
index 8d1cc4c9342..3319a766f54 100644
--- a/xml/System.Reflection/ExceptionHandlingClause.xml
+++ b/xml/System.Reflection/ExceptionHandlingClause.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -502,12 +498,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection/FieldInfo.xml b/xml/System.Reflection/FieldInfo.xml
index 9feb67d3c01..a6efc1958fe 100644
--- a/xml/System.Reflection/FieldInfo.xml
+++ b/xml/System.Reflection/FieldInfo.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -265,12 +261,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -778,12 +768,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -937,12 +921,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -1038,10 +1016,6 @@ Note: In <see href="https://go.microsoft.com/fwlink/?LinkID=247912">.NET for Win
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -2211,12 +2185,6 @@ Myfield.field - a private field; MemberType is a Field
       <AssemblyInfo>
         <AssemblyName>System.Reflection</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2267,10 +2235,6 @@ Myfield.field - a private field; MemberType is a Field
         <AssemblyName>System.Reflection</AssemblyName>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -2350,10 +2314,6 @@ Myfield.field - a private field; MemberType is a Field
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Diagnostics.DebuggerStepThrough]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerStepThrough&gt;]</AttributeName>
@@ -2450,12 +2410,6 @@ Note: In <see href="https://go.microsoft.com/fwlink/?LinkID=247912">.NET for Win
       <AssemblyInfo>
         <AssemblyName>System.Reflection</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection/ICustomAttributeProvider.xml b/xml/System.Reflection/ICustomAttributeProvider.xml
index fa5d39cb827..52e32eac8b8 100644
--- a/xml/System.Reflection/ICustomAttributeProvider.xml
+++ b/xml/System.Reflection/ICustomAttributeProvider.xml
@@ -51,10 +51,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Reflection/ICustomTypeProvider.xml b/xml/System.Reflection/ICustomTypeProvider.xml
index 6215f118366..f17e84639a2 100644
--- a/xml/System.Reflection/ICustomTypeProvider.xml
+++ b/xml/System.Reflection/ICustomTypeProvider.xml
@@ -21,12 +21,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents an object that provides a custom type.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Reflection/IReflect.xml b/xml/System.Reflection/IReflect.xml
index 46d3ace42db..f04a9cb3305 100644
--- a/xml/System.Reflection/IReflect.xml
+++ b/xml/System.Reflection/IReflect.xml
@@ -38,10 +38,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("AFBF15E5-C37C-11d2-B88E-00A0C9B471B8")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("AFBF15E5-C37C-11d2-B88E-00A0C9B471B8")&gt;]</AttributeName>
@@ -405,10 +401,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
@@ -668,10 +660,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.PropertyInfo</ReturnType>
@@ -758,10 +746,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Reflection/IReflectableType.xml b/xml/System.Reflection/IReflectableType.xml
index 47110a2827d..eecdd1caa08 100644
--- a/xml/System.Reflection/IReflectableType.xml
+++ b/xml/System.Reflection/IReflectableType.xml
@@ -51,12 +51,6 @@
     <TypeForwarding From="System.Reflection" FromVersion="4.1.1.0" To="mscorlib" ToVersion="4.0.0.0" FrameworkAlternate="netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents a type that you can reflect over.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Reflection/InterfaceMapping.xml b/xml/System.Reflection/InterfaceMapping.xml
index 3089678d49d..296c3eda8e2 100644
--- a/xml/System.Reflection/InterfaceMapping.xml
+++ b/xml/System.Reflection/InterfaceMapping.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Reflection/IntrospectionExtensions.xml b/xml/System.Reflection/IntrospectionExtensions.xml
index abf8b5f4abf..98941fcba72 100644
--- a/xml/System.Reflection/IntrospectionExtensions.xml
+++ b/xml/System.Reflection/IntrospectionExtensions.xml
@@ -104,10 +104,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.TypeInfo</ReturnType>
diff --git a/xml/System.Reflection/InvalidFilterCriteriaException.xml b/xml/System.Reflection/InvalidFilterCriteriaException.xml
index 41f9f385695..31ea6e1c557 100644
--- a/xml/System.Reflection/InvalidFilterCriteriaException.xml
+++ b/xml/System.Reflection/InvalidFilterCriteriaException.xml
@@ -64,10 +64,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -258,10 +254,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Reflection/LocalVariableInfo.xml b/xml/System.Reflection/LocalVariableInfo.xml
index 250a6d32eee..30405a912c1 100644
--- a/xml/System.Reflection/LocalVariableInfo.xml
+++ b/xml/System.Reflection/LocalVariableInfo.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Reflection/ManifestResourceInfo.xml b/xml/System.Reflection/ManifestResourceInfo.xml
index 2827e10d5d5..61492452d42 100644
--- a/xml/System.Reflection/ManifestResourceInfo.xml
+++ b/xml/System.Reflection/ManifestResourceInfo.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Reflection/MemberInfo.xml b/xml/System.Reflection/MemberInfo.xml
index b668bb26979..4e26f688ca9 100644
--- a/xml/System.Reflection/MemberInfo.xml
+++ b/xml/System.Reflection/MemberInfo.xml
@@ -78,10 +78,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -262,10 +258,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -339,12 +331,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1094,12 +1080,6 @@ For more information, see [How to use and debug assembly unloadability in .NET C
       <AssemblyInfo>
         <AssemblyName>System.Reflection</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1150,10 +1130,6 @@ For more information, see [How to use and debug assembly unloadability in .NET C
         <AssemblyName>System.Reflection</AssemblyName>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -1218,10 +1194,6 @@ For more information, see [How to use and debug assembly unloadability in .NET C
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
diff --git a/xml/System.Reflection/MemberInfoExtensions.xml b/xml/System.Reflection/MemberInfoExtensions.xml
index bc090c2e810..a17c5e5b771 100644
--- a/xml/System.Reflection/MemberInfoExtensions.xml
+++ b/xml/System.Reflection/MemberInfoExtensions.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection/MetadataAssemblyResolver.xml b/xml/System.Reflection/MetadataAssemblyResolver.xml
index 04f6ab6e16a..db7f71a1a63 100644
--- a/xml/System.Reflection/MetadataAssemblyResolver.xml
+++ b/xml/System.Reflection/MetadataAssemblyResolver.xml
@@ -56,12 +56,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Assembly</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection/MetadataLoadContext.xml b/xml/System.Reflection/MetadataLoadContext.xml
index ee9f51a01c2..2f45efc5bc1 100644
--- a/xml/System.Reflection/MetadataLoadContext.xml
+++ b/xml/System.Reflection/MetadataLoadContext.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a closed universe of Type objects loaded for inspection-only purposes. Each MetadataLoadContext can have its own binding rules and is isolated from all other MetadataLoadContexts.</summary>
@@ -99,10 +95,6 @@ For more information and examples, see [How to: Inspect assembly contents using
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Assembly</ReturnType>
diff --git a/xml/System.Reflection/MethodBase.xml b/xml/System.Reflection/MethodBase.xml
index 4f201b3bdf9..1cbb85095f3 100644
--- a/xml/System.Reflection/MethodBase.xml
+++ b/xml/System.Reflection/MethodBase.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -512,10 +508,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -927,12 +919,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.ParameterInfo[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection/MethodBody.xml b/xml/System.Reflection/MethodBody.xml
index 4b1dbec1129..3d104832ef8 100644
--- a/xml/System.Reflection/MethodBody.xml
+++ b/xml/System.Reflection/MethodBody.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -237,12 +233,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection/MethodInfo.xml b/xml/System.Reflection/MethodInfo.xml
index 71b11b3b087..1668151398e 100644
--- a/xml/System.Reflection/MethodInfo.xml
+++ b/xml/System.Reflection/MethodInfo.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -476,12 +472,6 @@ For a list of the invariant conditions for other terms used in generic reflectio
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1330,12 +1320,6 @@ public:
       <AssemblyInfo>
         <AssemblyName>System.Reflection</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1386,10 +1370,6 @@ public:
         <AssemblyName>System.Reflection</AssemblyName>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Reflection/MethodInfoExtensions.xml b/xml/System.Reflection/MethodInfoExtensions.xml
index 4c8aa6b26ec..e39879de8d9 100644
--- a/xml/System.Reflection/MethodInfoExtensions.xml
+++ b/xml/System.Reflection/MethodInfoExtensions.xml
@@ -46,12 +46,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1">System.Reflection.MethodInfo</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection/MethodInvoker.xml b/xml/System.Reflection/MethodInvoker.xml
index 78cc9a7578c..e6175f3f89f 100644
--- a/xml/System.Reflection/MethodInvoker.xml
+++ b/xml/System.Reflection/MethodInvoker.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods to invoke the method specified by the provided <see cref="T:System.Reflection.MethodBase" />.</summary>
@@ -42,12 +38,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInvoker</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection/Module.xml b/xml/System.Reflection/Module.xml
index 975377061ab..57a2c3052e2 100644
--- a/xml/System.Reflection/Module.xml
+++ b/xml/System.Reflection/Module.xml
@@ -89,10 +89,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -319,12 +315,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -500,10 +490,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Types might be removed")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Types might be removed")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type[]</ReturnType>
@@ -1276,10 +1262,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Methods might be removed")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Methods might be removed")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
@@ -1363,10 +1345,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Methods might be removed")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Methods might be removed")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
@@ -2523,12 +2501,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Reflection</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2578,12 +2550,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Reflection</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2649,10 +2615,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Trimming changes metadata tokens")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Trimming changes metadata tokens")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.FieldInfo</ReturnType>
@@ -2731,10 +2693,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Trimming changes metadata tokens")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Trimming changes metadata tokens")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.FieldInfo</ReturnType>
@@ -2836,10 +2794,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Trimming changes metadata tokens")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Trimming changes metadata tokens")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MemberInfo</ReturnType>
@@ -2922,10 +2876,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Trimming changes metadata tokens")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Trimming changes metadata tokens")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MemberInfo</ReturnType>
@@ -3031,10 +2981,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Trimming changes metadata tokens")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Trimming changes metadata tokens")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodBase</ReturnType>
@@ -3139,10 +3085,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Trimming changes metadata tokens")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Trimming changes metadata tokens")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodBase</ReturnType>
diff --git a/xml/System.Reflection/ModuleExtensions.xml b/xml/System.Reflection/ModuleExtensions.xml
index b5d3e13826d..c8a2782f3ad 100644
--- a/xml/System.Reflection/ModuleExtensions.xml
+++ b/xml/System.Reflection/ModuleExtensions.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection/NullabilityInfo.xml b/xml/System.Reflection/NullabilityInfo.xml
index d4ea524d5ae..fe1b0b00017 100644
--- a/xml/System.Reflection/NullabilityInfo.xml
+++ b/xml/System.Reflection/NullabilityInfo.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents nullability information.</summary>
@@ -51,10 +47,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.NullabilityInfo</ReturnType>
diff --git a/xml/System.Reflection/NullabilityInfoContext.xml b/xml/System.Reflection/NullabilityInfoContext.xml
index 1feab6168bd..686eb38519b 100644
--- a/xml/System.Reflection/NullabilityInfoContext.xml
+++ b/xml/System.Reflection/NullabilityInfoContext.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides APIs for populating nullability information and context from reflection members: <see cref="T:System.Reflection.ParameterInfo" />, <see cref="T:System.Reflection.FieldInfo" />, <see cref="T:System.Reflection.PropertyInfo" />, and <see cref="T:System.Reflection.EventInfo" />.</summary>
diff --git a/xml/System.Reflection/ObfuscationAttribute.xml b/xml/System.Reflection/ObfuscationAttribute.xml
index 5ab3bed98c1..be2a6357ac9 100644
--- a/xml/System.Reflection/ObfuscationAttribute.xml
+++ b/xml/System.Reflection/ObfuscationAttribute.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Reflection/ParameterInfo.xml b/xml/System.Reflection/ParameterInfo.xml
index 6edb7c4bad1..7cc01fe6f27 100644
--- a/xml/System.Reflection/ParameterInfo.xml
+++ b/xml/System.Reflection/ParameterInfo.xml
@@ -90,10 +90,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -435,10 +431,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1588,10 +1580,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1894,10 +1882,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Reflection/PathAssemblyResolver.xml b/xml/System.Reflection/PathAssemblyResolver.xml
index d93656d0ece..8ac53493fcb 100644
--- a/xml/System.Reflection/PathAssemblyResolver.xml
+++ b/xml/System.Reflection/PathAssemblyResolver.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a metadata assembly resolver that uses paths to every assembly that may be loaded.</summary>
diff --git a/xml/System.Reflection/Pointer.xml b/xml/System.Reflection/Pointer.xml
index a7cddc70254..d0f059a42a6 100644
--- a/xml/System.Reflection/Pointer.xml
+++ b/xml/System.Reflection/Pointer.xml
@@ -94,10 +94,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -150,12 +146,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Reflection/PropertyInfo.xml b/xml/System.Reflection/PropertyInfo.xml
index d7b813aa24c..15fd20fc020 100644
--- a/xml/System.Reflection/PropertyInfo.xml
+++ b/xml/System.Reflection/PropertyInfo.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -486,12 +482,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo[]</ReturnType>
       </ReturnValue>
@@ -561,12 +551,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo[]</ReturnType>
       </ReturnValue>
@@ -894,12 +878,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.ParameterInfo[]</ReturnType>
       </ReturnValue>
@@ -995,12 +973,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
       </ReturnValue>
@@ -1060,12 +1032,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Type[]</ReturnType>
       </ReturnValue>
@@ -1178,12 +1144,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Type[]</ReturnType>
       </ReturnValue>
@@ -1942,10 +1902,6 @@ Console.WriteLine("CurrCult: " +
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
diff --git a/xml/System.Reflection/PropertyInfoExtensions.xml b/xml/System.Reflection/PropertyInfoExtensions.xml
index 8dc8868276f..e691fb682e2 100644
--- a/xml/System.Reflection/PropertyInfoExtensions.xml
+++ b/xml/System.Reflection/PropertyInfoExtensions.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Reflection/ReflectionContext.xml b/xml/System.Reflection/ReflectionContext.xml
index 89f89b6a0ab..ff49569e9fb 100644
--- a/xml/System.Reflection/ReflectionContext.xml
+++ b/xml/System.Reflection/ReflectionContext.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a context that can provide reflection objects.</summary>
diff --git a/xml/System.Reflection/ReflectionTypeLoadException.xml b/xml/System.Reflection/ReflectionTypeLoadException.xml
index 1e81f14e1a3..65d0a31b000 100644
--- a/xml/System.Reflection/ReflectionTypeLoadException.xml
+++ b/xml/System.Reflection/ReflectionTypeLoadException.xml
@@ -73,10 +73,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -152,12 +148,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="classes" Type="System.Type[]" />
         <Parameter Name="exceptions" Type="System.Exception[]" />
@@ -208,12 +198,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="classes" Type="System.Type[]" />
         <Parameter Name="exceptions" Type="System.Exception[]" />
diff --git a/xml/System.Reflection/RuntimeReflectionExtensions.xml b/xml/System.Reflection/RuntimeReflectionExtensions.xml
index c80f0f4868f..7013c871cb4 100644
--- a/xml/System.Reflection/RuntimeReflectionExtensions.xml
+++ b/xml/System.Reflection/RuntimeReflectionExtensions.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods that retrieve information about types at run time.</summary>
diff --git a/xml/System.Reflection/StrongNameKeyPair.xml b/xml/System.Reflection/StrongNameKeyPair.xml
index 4d866ebf1f4..95611945e93 100644
--- a/xml/System.Reflection/StrongNameKeyPair.xml
+++ b/xml/System.Reflection/StrongNameKeyPair.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Reflection/TargetException.xml b/xml/System.Reflection/TargetException.xml
index bb628a395f7..370d5c0c2b9 100644
--- a/xml/System.Reflection/TargetException.xml
+++ b/xml/System.Reflection/TargetException.xml
@@ -64,10 +64,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -257,10 +253,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Reflection/TargetInvocationException.xml b/xml/System.Reflection/TargetInvocationException.xml
index f0de3804b01..f9b3a7ba831 100644
--- a/xml/System.Reflection/TargetInvocationException.xml
+++ b/xml/System.Reflection/TargetInvocationException.xml
@@ -67,10 +67,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Reflection/TargetParameterCountException.xml b/xml/System.Reflection/TargetParameterCountException.xml
index 7522533622a..b53770a3fa7 100644
--- a/xml/System.Reflection/TargetParameterCountException.xml
+++ b/xml/System.Reflection/TargetParameterCountException.xml
@@ -67,10 +67,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Reflection/TypeDelegator.xml b/xml/System.Reflection/TypeDelegator.xml
index e2768608a1a..eafb819ebbb 100644
--- a/xml/System.Reflection/TypeDelegator.xml
+++ b/xml/System.Reflection/TypeDelegator.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -287,10 +283,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -338,10 +330,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -396,10 +384,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -503,10 +487,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.ConstructorInfo</ReturnType>
@@ -743,12 +723,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
       </ReturnValue>
@@ -1523,10 +1497,6 @@ This method can be used to find a constructed generic member given a member from
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
@@ -1816,10 +1786,6 @@ This method can be used to find a constructed generic member given a member from
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.PropertyInfo</ReturnType>
@@ -1985,10 +1951,6 @@ This method can be used to find a constructed generic member given a member from
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -2142,12 +2104,6 @@ t.InvokeMember ("MyArray", BindingFlags.SetField, null, this, new
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2923,10 +2879,6 @@ t.InvokeMember ("MyArray", BindingFlags.SetField, null, this, new
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Reflection/TypeExtensions.xml b/xml/System.Reflection/TypeExtensions.xml
index fd72ca0d278..034c962609d 100644
--- a/xml/System.Reflection/TypeExtensions.xml
+++ b/xml/System.Reflection/TypeExtensions.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -80,22 +76,36 @@
       </Docs>
     </Member>
     <Member MemberName="GetConstructors">
-      <MemberSignature Language="C#" Value="public static System.Reflection.ConstructorInfo[] GetConstructors (Type type);" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
-      <MemberSignature Language="ILAsm" Value=".method public static hidebysig class System.Reflection.ConstructorInfo[] GetConstructors(class System.Type type) cil managed" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
-      <MemberSignature Language="DocId" Value="M:System.Reflection.TypeExtensions.GetConstructors(System.Type)" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
-      <MemberSignature Language="VB.NET" Value="Public Shared Function GetConstructors (type As Type) As ConstructorInfo()" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
-      <MemberSignature Language="F#" Value="static member GetConstructors : Type -&gt; System.Reflection.ConstructorInfo[]" Usage="System.Reflection.TypeExtensions.GetConstructors type" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
-      <MemberSignature Language="C++ CLI" Value="public:&#xA; static cli::array &lt;System::Reflection::ConstructorInfo ^&gt; ^ GetConstructors(Type ^ type);" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
+      <MemberSignature Language="C#" Value="public static System.Reflection.ConstructorInfo[] GetConstructors (this Type type);" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
+      <MemberSignature Language="ILAsm" Value=".method public static hidebysig class System.Reflection.ConstructorInfo[] GetConstructors(class System.Type type) cil managed" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
+      <MemberSignature Language="DocId" Value="M:System.Reflection.TypeExtensions.GetConstructors(System.Type)" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
+      <MemberSignature Language="VB.NET" Value="&lt;Extension()&gt;&#xA;Public Function GetConstructors (type As Type) As ConstructorInfo()" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
+      <MemberSignature Language="F#" Value="static member GetConstructors : Type -&gt; System.Reflection.ConstructorInfo[]" Usage="System.Reflection.TypeExtensions.GetConstructors type" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
+      <MemberSignature Language="C++ CLI" Value="public:&#xA;[System::Runtime::CompilerServices::Extension]&#xA; static cli::array &lt;System::Reflection::ConstructorInfo ^&gt; ^ GetConstructors(Type ^ type);" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
       <MemberType>Method</MemberType>
       <AssemblyInfo>
         <AssemblyName>System.Reflection.TypeExtensions</AssemblyName>
-        <AssemblyVersion>4.1.5.0</AssemblyVersion>
+        <AssemblyVersion>4.0.0.0</AssemblyVersion>
+        <AssemblyVersion>4.1.0.0</AssemblyVersion>
+        <AssemblyVersion>4.1.2.0</AssemblyVersion>
+        <AssemblyVersion>5.0.0.0</AssemblyVersion>
+        <AssemblyVersion>6.0.0.0</AssemblyVersion>
+        <AssemblyVersion>7.0.0.0</AssemblyVersion>
+        <AssemblyVersion>8.0.0.0</AssemblyVersion>
+        <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <ReturnValue>
-        <ReturnType FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">System.Reflection.ConstructorInfo[]</ReturnType>
+        <ReturnType FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1">System.Reflection.ConstructorInfo[]</ReturnType>
       </ReturnValue>
       <Parameters>
-        <Parameter Name="type" Type="System.Type" Index="0" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
+        <Parameter Name="type" Type="System.Type" RefType="this" Index="0" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1">
+          <Attributes>
+            <Attribute FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0">
+              <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors)]</AttributeName>
+              <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors)&gt;]</AttributeName>
+            </Attribute>
+          </Attributes>
+        </Parameter>
       </Parameters>
       <Docs>
         <param name="type">To be added.</param>
@@ -146,22 +156,36 @@
       </Docs>
     </Member>
     <Member MemberName="GetDefaultMembers">
-      <MemberSignature Language="C#" Value="public static System.Reflection.MemberInfo[] GetDefaultMembers (Type type);" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
-      <MemberSignature Language="ILAsm" Value=".method public static hidebysig class System.Reflection.MemberInfo[] GetDefaultMembers(class System.Type type) cil managed" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
-      <MemberSignature Language="DocId" Value="M:System.Reflection.TypeExtensions.GetDefaultMembers(System.Type)" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
-      <MemberSignature Language="VB.NET" Value="Public Shared Function GetDefaultMembers (type As Type) As MemberInfo()" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
-      <MemberSignature Language="F#" Value="static member GetDefaultMembers : Type -&gt; System.Reflection.MemberInfo[]" Usage="System.Reflection.TypeExtensions.GetDefaultMembers type" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
-      <MemberSignature Language="C++ CLI" Value="public:&#xA; static cli::array &lt;System::Reflection::MemberInfo ^&gt; ^ GetDefaultMembers(Type ^ type);" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
+      <MemberSignature Language="C#" Value="public static System.Reflection.MemberInfo[] GetDefaultMembers (this Type type);" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
+      <MemberSignature Language="ILAsm" Value=".method public static hidebysig class System.Reflection.MemberInfo[] GetDefaultMembers(class System.Type type) cil managed" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
+      <MemberSignature Language="DocId" Value="M:System.Reflection.TypeExtensions.GetDefaultMembers(System.Type)" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
+      <MemberSignature Language="VB.NET" Value="&lt;Extension()&gt;&#xA;Public Function GetDefaultMembers (type As Type) As MemberInfo()" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
+      <MemberSignature Language="F#" Value="static member GetDefaultMembers : Type -&gt; System.Reflection.MemberInfo[]" Usage="System.Reflection.TypeExtensions.GetDefaultMembers type" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
+      <MemberSignature Language="C++ CLI" Value="public:&#xA;[System::Runtime::CompilerServices::Extension]&#xA; static cli::array &lt;System::Reflection::MemberInfo ^&gt; ^ GetDefaultMembers(Type ^ type);" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
       <MemberType>Method</MemberType>
       <AssemblyInfo>
         <AssemblyName>System.Reflection.TypeExtensions</AssemblyName>
-        <AssemblyVersion>4.1.5.0</AssemblyVersion>
+        <AssemblyVersion>4.0.0.0</AssemblyVersion>
+        <AssemblyVersion>4.1.0.0</AssemblyVersion>
+        <AssemblyVersion>4.1.2.0</AssemblyVersion>
+        <AssemblyVersion>5.0.0.0</AssemblyVersion>
+        <AssemblyVersion>6.0.0.0</AssemblyVersion>
+        <AssemblyVersion>7.0.0.0</AssemblyVersion>
+        <AssemblyVersion>8.0.0.0</AssemblyVersion>
+        <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <ReturnValue>
-        <ReturnType FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">System.Reflection.MemberInfo[]</ReturnType>
+        <ReturnType FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1">System.Reflection.MemberInfo[]</ReturnType>
       </ReturnValue>
       <Parameters>
-        <Parameter Name="type" Type="System.Type" Index="0" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
+        <Parameter Name="type" Type="System.Type" RefType="this" Index="0" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1">
+          <Attributes>
+            <Attribute FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0">
+              <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicEvents | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicFields | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicNestedTypes | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)]</AttributeName>
+              <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicEvents | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicFields | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicNestedTypes | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)&gt;]</AttributeName>
+            </Attribute>
+          </Attributes>
+        </Parameter>
       </Parameters>
       <Docs>
         <param name="type">To be added.</param>
@@ -171,23 +195,38 @@
       </Docs>
     </Member>
     <Member MemberName="GetEvent">
-      <MemberSignature Language="C#" Value="public static System.Reflection.EventInfo GetEvent (Type type, string name);" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
-      <MemberSignature Language="ILAsm" Value=".method public static hidebysig class System.Reflection.EventInfo GetEvent(class System.Type type, string name) cil managed" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
-      <MemberSignature Language="DocId" Value="M:System.Reflection.TypeExtensions.GetEvent(System.Type,System.String)" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
-      <MemberSignature Language="VB.NET" Value="Public Shared Function GetEvent (type As Type, name As String) As EventInfo" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
-      <MemberSignature Language="F#" Value="static member GetEvent : Type * string -&gt; System.Reflection.EventInfo" Usage="System.Reflection.TypeExtensions.GetEvent (type, name)" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
-      <MemberSignature Language="C++ CLI" Value="public:&#xA; static System::Reflection::EventInfo ^ GetEvent(Type ^ type, System::String ^ name);" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
+      <MemberSignature Language="C#" Value="public static System.Reflection.EventInfo GetEvent (this Type type, string name);" FrameworkAlternate="dotnet-uwp-10.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
+      <MemberSignature Language="ILAsm" Value=".method public static hidebysig class System.Reflection.EventInfo GetEvent(class System.Type type, string name) cil managed" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
+      <MemberSignature Language="DocId" Value="M:System.Reflection.TypeExtensions.GetEvent(System.Type,System.String)" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
+      <MemberSignature Language="VB.NET" Value="&lt;Extension()&gt;&#xA;Public Function GetEvent (type As Type, name As String) As EventInfo" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
+      <MemberSignature Language="F#" Value="static member GetEvent : Type * string -&gt; System.Reflection.EventInfo" Usage="System.Reflection.TypeExtensions.GetEvent (type, name)" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
+      <MemberSignature Language="C++ CLI" Value="public:&#xA;[System::Runtime::CompilerServices::Extension]&#xA; static System::Reflection::EventInfo ^ GetEvent(Type ^ type, System::String ^ name);" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
+      <MemberSignature Language="C#" Value="public static System.Reflection.EventInfo? GetEvent (this Type type, string name);" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0" />
       <MemberType>Method</MemberType>
       <AssemblyInfo>
         <AssemblyName>System.Reflection.TypeExtensions</AssemblyName>
-        <AssemblyVersion>4.1.5.0</AssemblyVersion>
+        <AssemblyVersion>4.0.0.0</AssemblyVersion>
+        <AssemblyVersion>4.1.0.0</AssemblyVersion>
+        <AssemblyVersion>4.1.2.0</AssemblyVersion>
+        <AssemblyVersion>5.0.0.0</AssemblyVersion>
+        <AssemblyVersion>6.0.0.0</AssemblyVersion>
+        <AssemblyVersion>7.0.0.0</AssemblyVersion>
+        <AssemblyVersion>8.0.0.0</AssemblyVersion>
+        <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <ReturnValue>
-        <ReturnType FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">System.Reflection.EventInfo</ReturnType>
+        <ReturnType FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1">System.Reflection.EventInfo</ReturnType>
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     <Member MemberName="GetProperty">
-      <MemberSignature Language="C#" Value="public static System.Reflection.PropertyInfo GetProperty (this Type type, string name);" FrameworkAlternate="dotnet-uwp-10.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
-      <MemberSignature Language="ILAsm" Value=".method public static hidebysig class System.Reflection.PropertyInfo GetProperty(class System.Type type, string name) cil managed" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
-      <MemberSignature Language="DocId" Value="M:System.Reflection.TypeExtensions.GetProperty(System.Type,System.String)" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
-      <MemberSignature Language="VB.NET" Value="&lt;Extension()&gt;&#xA;Public Function GetProperty (type As Type, name As String) As PropertyInfo" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
-      <MemberSignature Language="F#" Value="static member GetProperty : Type * string -&gt; System.Reflection.PropertyInfo" Usage="System.Reflection.TypeExtensions.GetProperty (type, name)" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
-      <MemberSignature Language="C++ CLI" Value="public:&#xA;[System::Runtime::CompilerServices::Extension]&#xA; static System::Reflection::PropertyInfo ^ GetProperty(Type ^ type, System::String ^ name);" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
-      <MemberSignature Language="C#" Value="public static System.Reflection.PropertyInfo? GetProperty (this Type type, string name);" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0" />
+      <MemberSignature Language="C#" Value="public static System.Reflection.PropertyInfo GetProperty (Type type, string name);" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
+      <MemberSignature Language="ILAsm" Value=".method public static hidebysig class System.Reflection.PropertyInfo GetProperty(class System.Type type, string name) cil managed" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
+      <MemberSignature Language="DocId" Value="M:System.Reflection.TypeExtensions.GetProperty(System.Type,System.String)" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
+      <MemberSignature Language="VB.NET" Value="Public Shared Function GetProperty (type As Type, name As String) As PropertyInfo" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
+      <MemberSignature Language="F#" Value="static member GetProperty : Type * string -&gt; System.Reflection.PropertyInfo" Usage="System.Reflection.TypeExtensions.GetProperty (type, name)" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
+      <MemberSignature Language="C++ CLI" Value="public:&#xA; static System::Reflection::PropertyInfo ^ GetProperty(Type ^ type, System::String ^ name);" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
       <MemberType>Method</MemberType>
       <AssemblyInfo>
         <AssemblyName>System.Reflection.TypeExtensions</AssemblyName>
-        <AssemblyVersion>4.0.0.0</AssemblyVersion>
-        <AssemblyVersion>4.1.0.0</AssemblyVersion>
-        <AssemblyVersion>4.1.2.0</AssemblyVersion>
-        <AssemblyVersion>5.0.0.0</AssemblyVersion>
-        <AssemblyVersion>6.0.0.0</AssemblyVersion>
-        <AssemblyVersion>7.0.0.0</AssemblyVersion>
-        <AssemblyVersion>8.0.0.0</AssemblyVersion>
-        <AssemblyVersion>9.0.0.0</AssemblyVersion>
+        <AssemblyVersion>4.1.5.0</AssemblyVersion>
       </AssemblyInfo>
       <ReturnValue>
-        <ReturnType FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1">System.Reflection.PropertyInfo</ReturnType>
+        <ReturnType FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">System.Reflection.PropertyInfo</ReturnType>
       </ReturnValue>
       <Parameters>
-        <Parameter Name="type" Type="System.Type" RefType="this" Index="0" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1">
-          <Attributes>
-            <Attribute FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0">
-              <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)]</AttributeName>
-              <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)&gt;]</AttributeName>
-            </Attribute>
-          </Attributes>
-        </Parameter>
-        <Parameter Name="name" Type="System.String" Index="1" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
+        <Parameter Name="type" Type="System.Type" Index="0" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
+        <Parameter Name="name" Type="System.String" Index="1" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
       </Parameters>
       <Docs>
         <param name="type">To be added.</param>
@@ -1116,42 +1170,23 @@
       </Docs>
     </Member>
     <Member MemberName="IsAssignableFrom">
-      <MemberSignature Language="C#" Value="public static bool IsAssignableFrom (this Type type, Type c);" FrameworkAlternate="dotnet-uwp-10.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
-      <MemberSignature Language="ILAsm" Value=".method public static hidebysig bool IsAssignableFrom(class System.Type type, class System.Type c) cil managed" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
-      <MemberSignature Language="DocId" Value="M:System.Reflection.TypeExtensions.IsAssignableFrom(System.Type,System.Type)" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
-      <MemberSignature Language="VB.NET" Value="&lt;Extension()&gt;&#xA;Public Function IsAssignableFrom (type As Type, c As Type) As Boolean" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
-      <MemberSignature Language="F#" Value="static member IsAssignableFrom : Type * Type -&gt; bool" Usage="System.Reflection.TypeExtensions.IsAssignableFrom (type, c)" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
-      <MemberSignature Language="C++ CLI" Value="public:&#xA;[System::Runtime::CompilerServices::Extension]&#xA; static bool IsAssignableFrom(Type ^ type, Type ^ c);" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
-      <MemberSignature Language="C#" Value="public static bool IsAssignableFrom (this Type type, Type? c);" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0" />
+      <MemberSignature Language="C#" Value="public static bool IsAssignableFrom (Type type, Type c);" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
+      <MemberSignature Language="ILAsm" Value=".method public static hidebysig bool IsAssignableFrom(class System.Type type, class System.Type c) cil managed" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
+      <MemberSignature Language="DocId" Value="M:System.Reflection.TypeExtensions.IsAssignableFrom(System.Type,System.Type)" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
+      <MemberSignature Language="VB.NET" Value="Public Shared Function IsAssignableFrom (type As Type, c As Type) As Boolean" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
+      <MemberSignature Language="F#" Value="static member IsAssignableFrom : Type * Type -&gt; bool" Usage="System.Reflection.TypeExtensions.IsAssignableFrom (type, c)" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
+      <MemberSignature Language="C++ CLI" Value="public:&#xA; static bool IsAssignableFrom(Type ^ type, Type ^ c);" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
       <MemberType>Method</MemberType>
       <AssemblyInfo>
         <AssemblyName>System.Reflection.TypeExtensions</AssemblyName>
-        <AssemblyVersion>4.0.0.0</AssemblyVersion>
-        <AssemblyVersion>4.1.0.0</AssemblyVersion>
-        <AssemblyVersion>4.1.2.0</AssemblyVersion>
-        <AssemblyVersion>5.0.0.0</AssemblyVersion>
-        <AssemblyVersion>6.0.0.0</AssemblyVersion>
-        <AssemblyVersion>7.0.0.0</AssemblyVersion>
-        <AssemblyVersion>8.0.0.0</AssemblyVersion>
-        <AssemblyVersion>9.0.0.0</AssemblyVersion>
+        <AssemblyVersion>4.1.5.0</AssemblyVersion>
       </AssemblyInfo>
       <ReturnValue>
-        <ReturnType FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1">System.Boolean</ReturnType>
+        <ReturnType FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">System.Boolean</ReturnType>
       </ReturnValue>
       <Parameters>
-        <Parameter Name="type" Type="System.Type" RefType="this" Index="0" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1" />
-        <Parameter Name="c" Type="System.Type" Index="1" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1">
-          <Attributes>
-            <Attribute FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0">
-              <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.NotNullWhen(true)]</AttributeName>
-              <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.NotNullWhen(true)&gt;]</AttributeName>
-            </Attribute>
-            <Attribute FrameworkAlternate="net-8.0;net-9.0">
-              <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
-              <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
-            </Attribute>
-          </Attributes>
-        </Parameter>
+        <Parameter Name="type" Type="System.Type" Index="0" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
+        <Parameter Name="c" Type="System.Type" Index="1" FrameworkAlternate="netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
       </Parameters>
       <Docs>
         <param name="type">To be added.</param>
diff --git a/xml/System.Reflection/TypeInfo.xml b/xml/System.Reflection/TypeInfo.xml
index b7fb3a6f56e..7f941e4f0bb 100644
--- a/xml/System.Reflection/TypeInfo.xml
+++ b/xml/System.Reflection/TypeInfo.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -3232,12 +3228,6 @@ The following example uses the reflection types and members in .NET to retrieve
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Resources.Extensions/DeserializingResourceReader.xml b/xml/System.Resources.Extensions/DeserializingResourceReader.xml
index 27a7ae98931..a3c5968f7af 100644
--- a/xml/System.Resources.Extensions/DeserializingResourceReader.xml
+++ b/xml/System.Resources.Extensions/DeserializingResourceReader.xml
@@ -53,12 +53,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="stream" Type="System.IO.Stream" />
       </Parameters>
@@ -86,12 +80,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="fileName" Type="System.String" />
       </Parameters>
@@ -182,12 +170,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IDictionaryEnumerator</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Resources.Extensions/PreserializedResourceWriter.xml b/xml/System.Resources.Extensions/PreserializedResourceWriter.xml
index 4605ea3c04f..afeebdaf658 100644
--- a/xml/System.Resources.Extensions/PreserializedResourceWriter.xml
+++ b/xml/System.Resources.Extensions/PreserializedResourceWriter.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides APIs similar to <see cref="T:System.Resources.ResourceWriter" /> that can write pre-serialized resource data.</summary>
diff --git a/xml/System.Resources.Tools/ITargetAwareCodeDomProvider.xml b/xml/System.Resources.Tools/ITargetAwareCodeDomProvider.xml
index 69557cc0971..433be6d0370 100644
--- a/xml/System.Resources.Tools/ITargetAwareCodeDomProvider.xml
+++ b/xml/System.Resources.Tools/ITargetAwareCodeDomProvider.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines an interface that enables the strongly typed resource builder (<see cref="T:System.Resources.Tools.StronglyTypedResourceBuilder" /> object) to determine which types and properties are available so it can emit the correct Code Document Object Model (CodeDOM) tree.</summary>
diff --git a/xml/System.Resources.Tools/StronglyTypedResourceBuilder.xml b/xml/System.Resources.Tools/StronglyTypedResourceBuilder.xml
index 026832d6973..d5126066f3d 100644
--- a/xml/System.Resources.Tools/StronglyTypedResourceBuilder.xml
+++ b/xml/System.Resources.Tools/StronglyTypedResourceBuilder.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides support for strongly typed resources. This class cannot be inherited.</summary>
diff --git a/xml/System.Resources/IResourceReader.xml b/xml/System.Resources/IResourceReader.xml
index e2a877986da..7aa7de2442a 100644
--- a/xml/System.Resources/IResourceReader.xml
+++ b/xml/System.Resources/IResourceReader.xml
@@ -156,12 +156,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IDictionaryEnumerator</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Resources/IResourceWriter.xml b/xml/System.Resources/IResourceWriter.xml
index e78fb2dc4c0..55c536471b9 100644
--- a/xml/System.Resources/IResourceWriter.xml
+++ b/xml/System.Resources/IResourceWriter.xml
@@ -42,10 +42,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Resources/MissingManifestResourceException.xml b/xml/System.Resources/MissingManifestResourceException.xml
index 20458d68d8d..7fde47206c3 100644
--- a/xml/System.Resources/MissingManifestResourceException.xml
+++ b/xml/System.Resources/MissingManifestResourceException.xml
@@ -65,10 +65,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -245,10 +241,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Resources/MissingSatelliteAssemblyException.xml b/xml/System.Resources/MissingSatelliteAssemblyException.xml
index b24673c2f34..27ffd565951 100644
--- a/xml/System.Resources/MissingSatelliteAssemblyException.xml
+++ b/xml/System.Resources/MissingSatelliteAssemblyException.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -294,10 +290,6 @@ HelloWorld2
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Resources/NeutralResourcesLanguageAttribute.xml b/xml/System.Resources/NeutralResourcesLanguageAttribute.xml
index 5a722acc3c7..d9f1a573f7d 100644
--- a/xml/System.Resources/NeutralResourcesLanguageAttribute.xml
+++ b/xml/System.Resources/NeutralResourcesLanguageAttribute.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Resources/ResXDataNode.xml b/xml/System.Resources/ResXDataNode.xml
index 040b6f97972..9f42a95b528 100644
--- a/xml/System.Resources/ResXDataNode.xml
+++ b/xml/System.Resources/ResXDataNode.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an element in an XML resource (.resx) file.</summary>
@@ -99,10 +95,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" />
@@ -150,10 +142,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" />
@@ -188,12 +176,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" Index="0" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0" />
         <Parameter Name="value" Type="System.Object" Index="1" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0">
@@ -244,12 +226,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" Index="0" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0" />
         <Parameter Name="fileRef" Type="System.Resources.ResXFileRef" Index="1" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0" />
@@ -301,14 +277,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -590,14 +558,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -631,12 +591,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Resources/ResXFileRef+Converter.xml b/xml/System.Resources/ResXFileRef+Converter.xml
index d0cd49dad52..79b6ef3c06a 100644
--- a/xml/System.Resources/ResXFileRef+Converter.xml
+++ b/xml/System.Resources/ResXFileRef+Converter.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert data for a <see cref="T:System.Resources.ResXFileRef" /> to and from a string.</summary>
@@ -97,12 +93,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Resources/ResXFileRef.xml b/xml/System.Resources/ResXFileRef.xml
index c1d449e19ad..a3392090635 100644
--- a/xml/System.Resources/ResXFileRef.xml
+++ b/xml/System.Resources/ResXFileRef.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a link to an external resource.</summary>
@@ -223,10 +219,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Encoding</ReturnType>
diff --git a/xml/System.Resources/ResXResourceReader.xml b/xml/System.Resources/ResXResourceReader.xml
index a41fd29dd03..15f8d8742d0 100644
--- a/xml/System.Resources/ResXResourceReader.xml
+++ b/xml/System.Resources/ResXResourceReader.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Enumerates XML resource (.resx) files and streams, and reads the sequential resource name and value pairs.</summary>
@@ -476,14 +472,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Resources/ResXResourceSet.xml b/xml/System.Resources/ResXResourceSet.xml
index 67c55b7e12e..d4f2ca32230 100644
--- a/xml/System.Resources/ResXResourceSet.xml
+++ b/xml/System.Resources/ResXResourceSet.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents all resources in an XML resource (.resx) file.</summary>
diff --git a/xml/System.Resources/ResXResourceWriter.xml b/xml/System.Resources/ResXResourceWriter.xml
index f34ae7c45c7..5e5bad1563e 100644
--- a/xml/System.Resources/ResXResourceWriter.xml
+++ b/xml/System.Resources/ResXResourceWriter.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Writes resources in an XML resource (.resx) file or an output stream.</summary>
@@ -761,14 +757,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Resources/ResourceManager.xml b/xml/System.Resources/ResourceManager.xml
index 2760a668635..9c95d32cbb2 100644
--- a/xml/System.Resources/ResourceManager.xml
+++ b/xml/System.Resources/ResourceManager.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -713,12 +709,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -1152,10 +1142,6 @@ csc GetStream.cs /resource:AppResources.resources
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5">
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
@@ -1312,10 +1298,6 @@ csc GetStream.cs /resource:AppResources.resources
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Resources/ResourceReader.xml b/xml/System.Resources/ResourceReader.xml
index e68e8be6ec3..854f6ea1ac4 100644
--- a/xml/System.Resources/ResourceReader.xml
+++ b/xml/System.Resources/ResourceReader.xml
@@ -149,10 +149,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -255,10 +251,6 @@ Label11="Mobile Phone:"
         <AssemblyName>System.Resources.Reader</AssemblyName>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -483,12 +475,6 @@ Label11="Mobile Phone:"
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IDictionaryEnumerator</ReturnType>
       </ReturnValue>
@@ -595,12 +581,6 @@ Label11="Mobile Phone:"
       <AssemblyInfo>
         <AssemblyName>System.Resources.Reader</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Resources/ResourceSet.xml b/xml/System.Resources/ResourceSet.xml
index 42856607cdf..45cf70db3f0 100644
--- a/xml/System.Resources/ResourceSet.xml
+++ b/xml/System.Resources/ResourceSet.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Resources/ResourceWriter.xml b/xml/System.Resources/ResourceWriter.xml
index d1fa3a5cf54..9a196986f42 100644
--- a/xml/System.Resources/ResourceWriter.xml
+++ b/xml/System.Resources/ResourceWriter.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Resources/SatelliteContractVersionAttribute.xml b/xml/System.Resources/SatelliteContractVersionAttribute.xml
index cb5ece9b72f..11eea8989cf 100644
--- a/xml/System.Resources/SatelliteContractVersionAttribute.xml
+++ b/xml/System.Resources/SatelliteContractVersionAttribute.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.CompilerServices/AccessedThroughPropertyAttribute.xml b/xml/System.Runtime.CompilerServices/AccessedThroughPropertyAttribute.xml
index 6fff2185198..0a7b1d66d1a 100644
--- a/xml/System.Runtime.CompilerServices/AccessedThroughPropertyAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/AccessedThroughPropertyAttribute.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.CompilerServices/AsyncIteratorMethodBuilder.xml b/xml/System.Runtime.CompilerServices/AsyncIteratorMethodBuilder.xml
index 10e8c469bc6..f03e07f7d61 100644
--- a/xml/System.Runtime.CompilerServices/AsyncIteratorMethodBuilder.xml
+++ b/xml/System.Runtime.CompilerServices/AsyncIteratorMethodBuilder.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a builder for asynchronous iterators.</summary>
diff --git a/xml/System.Runtime.CompilerServices/AsyncIteratorStateMachineAttribute.xml b/xml/System.Runtime.CompilerServices/AsyncIteratorStateMachineAttribute.xml
index 14ed6c8dd66..cf573158940 100644
--- a/xml/System.Runtime.CompilerServices/AsyncIteratorStateMachineAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/AsyncIteratorStateMachineAttribute.xml
@@ -72,12 +72,6 @@
         <AssemblyName>Microsoft.Bcl.AsyncInterfaces</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="stateMachineType" Type="System.Type" />
       </Parameters>
diff --git a/xml/System.Runtime.CompilerServices/AsyncMethodBuilderAttribute.xml b/xml/System.Runtime.CompilerServices/AsyncMethodBuilderAttribute.xml
index 53fade46c98..ea6aa9d88ce 100644
--- a/xml/System.Runtime.CompilerServices/AsyncMethodBuilderAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/AsyncMethodBuilderAttribute.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates the type of the async method builder that should be used by a language compiler to build the attributed type when used as the return type of an async method.</summary>
diff --git a/xml/System.Runtime.CompilerServices/AsyncStateMachineAttribute.xml b/xml/System.Runtime.CompilerServices/AsyncStateMachineAttribute.xml
index e158249d3b2..6c0ab57f6a0 100644
--- a/xml/System.Runtime.CompilerServices/AsyncStateMachineAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/AsyncStateMachineAttribute.xml
@@ -119,12 +119,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="stateMachineType" Type="System.Type" />
       </Parameters>
diff --git a/xml/System.Runtime.CompilerServices/AsyncTaskMethodBuilder.xml b/xml/System.Runtime.CompilerServices/AsyncTaskMethodBuilder.xml
index 772130bf6d4..3980a2fb7f4 100644
--- a/xml/System.Runtime.CompilerServices/AsyncTaskMethodBuilder.xml
+++ b/xml/System.Runtime.CompilerServices/AsyncTaskMethodBuilder.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a builder for asynchronous methods that return a task.</summary>
diff --git a/xml/System.Runtime.CompilerServices/AsyncTaskMethodBuilder`1.xml b/xml/System.Runtime.CompilerServices/AsyncTaskMethodBuilder`1.xml
index 965d25a2a9e..e5621b014de 100644
--- a/xml/System.Runtime.CompilerServices/AsyncTaskMethodBuilder`1.xml
+++ b/xml/System.Runtime.CompilerServices/AsyncTaskMethodBuilder`1.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TResult">The result to use to complete the task.</typeparam>
diff --git a/xml/System.Runtime.CompilerServices/AsyncValueTaskMethodBuilder.xml b/xml/System.Runtime.CompilerServices/AsyncValueTaskMethodBuilder.xml
index ebeb4b675c3..93b7cf9ea25 100644
--- a/xml/System.Runtime.CompilerServices/AsyncValueTaskMethodBuilder.xml
+++ b/xml/System.Runtime.CompilerServices/AsyncValueTaskMethodBuilder.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a builder for asynchronous methods that return a <see cref="T:System.Threading.Tasks.ValueTask" />.</summary>
diff --git a/xml/System.Runtime.CompilerServices/AsyncValueTaskMethodBuilder`1.xml b/xml/System.Runtime.CompilerServices/AsyncValueTaskMethodBuilder`1.xml
index 3cc51aa5892..b60b1a81577 100644
--- a/xml/System.Runtime.CompilerServices/AsyncValueTaskMethodBuilder`1.xml
+++ b/xml/System.Runtime.CompilerServices/AsyncValueTaskMethodBuilder`1.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TResult">The type of the result produced by the task.</typeparam>
diff --git a/xml/System.Runtime.CompilerServices/AsyncVoidMethodBuilder.xml b/xml/System.Runtime.CompilerServices/AsyncVoidMethodBuilder.xml
index ab02263bfe2..c9d91e21cfb 100644
--- a/xml/System.Runtime.CompilerServices/AsyncVoidMethodBuilder.xml
+++ b/xml/System.Runtime.CompilerServices/AsyncVoidMethodBuilder.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a builder for asynchronous methods that do not return a value.</summary>
diff --git a/xml/System.Runtime.CompilerServices/CallSite.xml b/xml/System.Runtime.CompilerServices/CallSite.xml
index ecfb139a495..fd3745792c4 100644
--- a/xml/System.Runtime.CompilerServices/CallSite.xml
+++ b/xml/System.Runtime.CompilerServices/CallSite.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A dynamic call site base class. This type is used as a parameter type to the dynamic site targets.</summary>
@@ -147,12 +143,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.CompilerServices.CallSite</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.CompilerServices/CallSiteBinder.xml b/xml/System.Runtime.CompilerServices/CallSiteBinder.xml
index 722c2b0c2fc..49181b7792f 100644
--- a/xml/System.Runtime.CompilerServices/CallSiteBinder.xml
+++ b/xml/System.Runtime.CompilerServices/CallSiteBinder.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Class responsible for runtime binding of the dynamic operations on the dynamic call site.</summary>
diff --git a/xml/System.Runtime.CompilerServices/CallSiteHelpers.xml b/xml/System.Runtime.CompilerServices/CallSiteHelpers.xml
index d3b1747bfba..0c77401c6c8 100644
--- a/xml/System.Runtime.CompilerServices/CallSiteHelpers.xml
+++ b/xml/System.Runtime.CompilerServices/CallSiteHelpers.xml
@@ -88,12 +88,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.CompilerServices/CallSite`1.xml b/xml/System.Runtime.CompilerServices/CallSite`1.xml
index ab05341eedb..85d93a865cb 100644
--- a/xml/System.Runtime.CompilerServices/CallSite`1.xml
+++ b/xml/System.Runtime.CompilerServices/CallSite`1.xml
@@ -66,10 +66,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The delegate type.</typeparam>
diff --git a/xml/System.Runtime.CompilerServices/CallerArgumentExpressionAttribute.xml b/xml/System.Runtime.CompilerServices/CallerArgumentExpressionAttribute.xml
index f1d5f91e1f4..ecac3664b44 100644
--- a/xml/System.Runtime.CompilerServices/CallerArgumentExpressionAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/CallerArgumentExpressionAttribute.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates that a parameter captures the expression passed for another parameter as a string.</summary>
diff --git a/xml/System.Runtime.CompilerServices/CollectionBuilderAttribute.xml b/xml/System.Runtime.CompilerServices/CollectionBuilderAttribute.xml
index 55de0b15ddf..3e62647daeb 100644
--- a/xml/System.Runtime.CompilerServices/CollectionBuilderAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/CollectionBuilderAttribute.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Runtime.CompilerServices/CompilerFeatureRequiredAttribute.xml b/xml/System.Runtime.CompilerServices/CompilerFeatureRequiredAttribute.xml
index 11828ae30b8..e1dd3a32d35 100644
--- a/xml/System.Runtime.CompilerServices/CompilerFeatureRequiredAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/CompilerFeatureRequiredAttribute.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates that compiler support for a particular feature is required for the location where this attribute is applied.</summary>
diff --git a/xml/System.Runtime.CompilerServices/ConditionalWeakTable`2+CreateValueCallback.xml b/xml/System.Runtime.CompilerServices/ConditionalWeakTable`2+CreateValueCallback.xml
index bb25caecc4d..ee0864be43d 100644
--- a/xml/System.Runtime.CompilerServices/ConditionalWeakTable`2+CreateValueCallback.xml
+++ b/xml/System.Runtime.CompilerServices/ConditionalWeakTable`2+CreateValueCallback.xml
@@ -49,12 +49,6 @@
   <Base>
     <BaseTypeName>System.Delegate</BaseTypeName>
   </Base>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Parameters>
     <Parameter Name="key" Type="TKey" />
   </Parameters>
diff --git a/xml/System.Runtime.CompilerServices/ConditionalWeakTable`2.xml b/xml/System.Runtime.CompilerServices/ConditionalWeakTable`2.xml
index abf2f1164ad..ecbc99192b4 100644
--- a/xml/System.Runtime.CompilerServices/ConditionalWeakTable`2.xml
+++ b/xml/System.Runtime.CompilerServices/ConditionalWeakTable`2.xml
@@ -92,10 +92,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.CompilerServices/ConfiguredCancelableAsyncEnumerable`1+Enumerator.xml b/xml/System.Runtime.CompilerServices/ConfiguredCancelableAsyncEnumerable`1+Enumerator.xml
index aac9301eb71..4618d5c7723 100644
--- a/xml/System.Runtime.CompilerServices/ConfiguredCancelableAsyncEnumerable`1+Enumerator.xml
+++ b/xml/System.Runtime.CompilerServices/ConfiguredCancelableAsyncEnumerable`1+Enumerator.xml
@@ -100,10 +100,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
diff --git a/xml/System.Runtime.CompilerServices/ConfiguredTaskAwaitable+ConfiguredTaskAwaiter.xml b/xml/System.Runtime.CompilerServices/ConfiguredTaskAwaitable+ConfiguredTaskAwaiter.xml
index e82e10ba3db..483a729bdba 100644
--- a/xml/System.Runtime.CompilerServices/ConfiguredTaskAwaitable+ConfiguredTaskAwaiter.xml
+++ b/xml/System.Runtime.CompilerServices/ConfiguredTaskAwaitable+ConfiguredTaskAwaiter.xml
@@ -233,10 +233,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -305,10 +301,6 @@
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Runtime.CompilerServices/ConfiguredTaskAwaitable`1+ConfiguredTaskAwaiter.xml b/xml/System.Runtime.CompilerServices/ConfiguredTaskAwaitable`1+ConfiguredTaskAwaiter.xml
index 0f61c4143f0..4c73bee3390 100644
--- a/xml/System.Runtime.CompilerServices/ConfiguredTaskAwaitable`1+ConfiguredTaskAwaiter.xml
+++ b/xml/System.Runtime.CompilerServices/ConfiguredTaskAwaitable`1+ConfiguredTaskAwaiter.xml
@@ -122,10 +122,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -248,10 +244,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -320,10 +312,6 @@
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Runtime.CompilerServices/ConfiguredValueTaskAwaitable+ConfiguredValueTaskAwaiter.xml b/xml/System.Runtime.CompilerServices/ConfiguredValueTaskAwaitable+ConfiguredValueTaskAwaiter.xml
index 83c8f157cc1..aea208ec181 100644
--- a/xml/System.Runtime.CompilerServices/ConfiguredValueTaskAwaitable+ConfiguredValueTaskAwaiter.xml
+++ b/xml/System.Runtime.CompilerServices/ConfiguredValueTaskAwaitable+ConfiguredValueTaskAwaiter.xml
@@ -160,12 +160,6 @@
         <AssemblyName>System.Threading.Tasks.Extensions</AssemblyName>
         <AssemblyVersion>4.2.0.1</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -207,12 +201,6 @@
         <AssemblyName>System.Threading.Tasks.Extensions</AssemblyName>
         <AssemblyVersion>4.2.0.1</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.CompilerServices/ConfiguredValueTaskAwaitable`1+ConfiguredValueTaskAwaiter.xml b/xml/System.Runtime.CompilerServices/ConfiguredValueTaskAwaitable`1+ConfiguredValueTaskAwaiter.xml
index 657516f8490..d9eacd5142d 100644
--- a/xml/System.Runtime.CompilerServices/ConfiguredValueTaskAwaitable`1+ConfiguredValueTaskAwaiter.xml
+++ b/xml/System.Runtime.CompilerServices/ConfiguredValueTaskAwaitable`1+ConfiguredValueTaskAwaiter.xml
@@ -104,12 +104,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TResult</ReturnType>
       </ReturnValue>
@@ -191,12 +185,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -241,12 +229,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.CompilerServices/ContractHelper.xml b/xml/System.Runtime.CompilerServices/ContractHelper.xml
index 1ffd8677546..c42f20bd524 100644
--- a/xml/System.Runtime.CompilerServices/ContractHelper.xml
+++ b/xml/System.Runtime.CompilerServices/ContractHelper.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods that the binary rewriter uses to handle contract failures.</summary>
diff --git a/xml/System.Runtime.CompilerServices/CppInlineNamespaceAttribute.xml b/xml/System.Runtime.CompilerServices/CppInlineNamespaceAttribute.xml
index d2701f37c61..5bf5480557b 100644
--- a/xml/System.Runtime.CompilerServices/CppInlineNamespaceAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/CppInlineNamespaceAttribute.xml
@@ -49,12 +49,6 @@ This attribute is used to implement C++ 11 inline namespaces in C++/CLI. The con
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="dottedName" Type="System.String" />
       </Parameters>
diff --git a/xml/System.Runtime.CompilerServices/CustomConstantAttribute.xml b/xml/System.Runtime.CompilerServices/CustomConstantAttribute.xml
index 6962c29abb7..3480514a7ac 100644
--- a/xml/System.Runtime.CompilerServices/CustomConstantAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/CustomConstantAttribute.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Runtime.CompilerServices/DateTimeConstantAttribute.xml b/xml/System.Runtime.CompilerServices/DateTimeConstantAttribute.xml
index eb14e0c283f..475e968a93e 100644
--- a/xml/System.Runtime.CompilerServices/DateTimeConstantAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/DateTimeConstantAttribute.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Runtime.CompilerServices/DebugInfoGenerator.xml b/xml/System.Runtime.CompilerServices/DebugInfoGenerator.xml
index 8b7629cefd6..4461caed243 100644
--- a/xml/System.Runtime.CompilerServices/DebugInfoGenerator.xml
+++ b/xml/System.Runtime.CompilerServices/DebugInfoGenerator.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Generates debug information for lambda expressions in an expression tree.</summary>
diff --git a/xml/System.Runtime.CompilerServices/DefaultInterpolatedStringHandler.xml b/xml/System.Runtime.CompilerServices/DefaultInterpolatedStringHandler.xml
index 5165f924c45..6de4c78a794 100644
--- a/xml/System.Runtime.CompilerServices/DefaultInterpolatedStringHandler.xml
+++ b/xml/System.Runtime.CompilerServices/DefaultInterpolatedStringHandler.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a handler used by the language compiler to process interpolated strings into <see cref="T:System.String" /> instances.</summary>
@@ -128,12 +124,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="literalLength" Type="System.Int32" />
         <Parameter Name="formattedCount" Type="System.Int32" />
@@ -180,12 +170,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -277,12 +261,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -358,12 +336,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -402,12 +374,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -530,12 +496,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -563,12 +523,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -594,12 +548,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.CompilerServices/DependencyAttribute.xml b/xml/System.Runtime.CompilerServices/DependencyAttribute.xml
index 1b0ea944597..2c5b3913dee 100644
--- a/xml/System.Runtime.CompilerServices/DependencyAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/DependencyAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Runtime.CompilerServices/DynamicAttribute.xml b/xml/System.Runtime.CompilerServices/DynamicAttribute.xml
index 9862628f2b5..7572b34e2f6 100644
--- a/xml/System.Runtime.CompilerServices/DynamicAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/DynamicAttribute.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates that the use of <see cref="T:System.Object" /> on a member is meant to be treated as a dynamically dispatched type.</summary>
diff --git a/xml/System.Runtime.CompilerServices/FixedBufferAttribute.xml b/xml/System.Runtime.CompilerServices/FixedBufferAttribute.xml
index 0ebbc027be2..3efb8b6ec39 100644
--- a/xml/System.Runtime.CompilerServices/FixedBufferAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/FixedBufferAttribute.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates that a field should be treated as containing a fixed number of elements of the specified primitive type. This class cannot be inherited.</summary>
diff --git a/xml/System.Runtime.CompilerServices/FormattableStringFactory.xml b/xml/System.Runtime.CompilerServices/FormattableStringFactory.xml
index a7ec9f91f98..b37a499d60e 100644
--- a/xml/System.Runtime.CompilerServices/FormattableStringFactory.xml
+++ b/xml/System.Runtime.CompilerServices/FormattableStringFactory.xml
@@ -77,12 +77,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.FormattableString</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.CompilerServices/IAsyncStateMachine.xml b/xml/System.Runtime.CompilerServices/IAsyncStateMachine.xml
index 276eef9771e..ec9e1edb1d9 100644
--- a/xml/System.Runtime.CompilerServices/IAsyncStateMachine.xml
+++ b/xml/System.Runtime.CompilerServices/IAsyncStateMachine.xml
@@ -48,12 +48,6 @@
     <TypeForwarding From="System.Threading.Tasks" FromVersion="4.1.2.0" To="System.Runtime" ToVersion="4.2.2.0" FrameworkAlternate="netcore-3.1" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents state machines that are generated for asynchronous methods. This type is intended for compiler use only.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Runtime.CompilerServices/ICriticalNotifyCompletion.xml b/xml/System.Runtime.CompilerServices/ICriticalNotifyCompletion.xml
index 34f636b8e84..48a3ded845e 100644
--- a/xml/System.Runtime.CompilerServices/ICriticalNotifyCompletion.xml
+++ b/xml/System.Runtime.CompilerServices/ICriticalNotifyCompletion.xml
@@ -97,10 +97,6 @@
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Runtime.CompilerServices/IDispatchConstantAttribute.xml b/xml/System.Runtime.CompilerServices/IDispatchConstantAttribute.xml
index d734a94721e..0678a1a15ca 100644
--- a/xml/System.Runtime.CompilerServices/IDispatchConstantAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/IDispatchConstantAttribute.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Runtime.CompilerServices/INotifyCompletion.xml b/xml/System.Runtime.CompilerServices/INotifyCompletion.xml
index 2f83bb42169..b1aab1da574 100644
--- a/xml/System.Runtime.CompilerServices/INotifyCompletion.xml
+++ b/xml/System.Runtime.CompilerServices/INotifyCompletion.xml
@@ -49,12 +49,6 @@
     <TypeForwarding From="System.Threading.Tasks" FromVersion="4.1.2.0" To="System.Runtime" ToVersion="4.2.2.0" FrameworkAlternate="netcore-3.1" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents an operation that schedules continuations when it completes.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Runtime.CompilerServices/IRuntimeVariables.xml b/xml/System.Runtime.CompilerServices/IRuntimeVariables.xml
index cceb7e9ffb3..d8bdfadf832 100644
--- a/xml/System.Runtime.CompilerServices/IRuntimeVariables.xml
+++ b/xml/System.Runtime.CompilerServices/IRuntimeVariables.xml
@@ -35,12 +35,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Linq.Expressions" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents the values of run-time variables.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Runtime.CompilerServices/IStrongBox.xml b/xml/System.Runtime.CompilerServices/IStrongBox.xml
index 71a75325e70..00fc1cc4588 100644
--- a/xml/System.Runtime.CompilerServices/IStrongBox.xml
+++ b/xml/System.Runtime.CompilerServices/IStrongBox.xml
@@ -42,12 +42,6 @@
     <TypeForwarding From="System.Runtime" FromVersion="4.1.1.1" To="System.Core" ToVersion="4.0.0.0" FrameworkAlternate="netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Defines a property for accessing the value that an object references.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Runtime.CompilerServices/ITuple.xml b/xml/System.Runtime.CompilerServices/ITuple.xml
index 06075d3bcd6..b8d379143be 100644
--- a/xml/System.Runtime.CompilerServices/ITuple.xml
+++ b/xml/System.Runtime.CompilerServices/ITuple.xml
@@ -33,12 +33,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Runtime" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Defines a general-purpose Tuple implementation that allows access to Tuple instance members without knowing the underlying Tuple type.</summary>
     <remarks>
diff --git a/xml/System.Runtime.CompilerServices/IUnknownConstantAttribute.xml b/xml/System.Runtime.CompilerServices/IUnknownConstantAttribute.xml
index 93cb4b06551..5a473b2986f 100644
--- a/xml/System.Runtime.CompilerServices/IUnknownConstantAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/IUnknownConstantAttribute.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Runtime.CompilerServices/IndexerNameAttribute.xml b/xml/System.Runtime.CompilerServices/IndexerNameAttribute.xml
index 82246640d33..13c8ab8fb7d 100644
--- a/xml/System.Runtime.CompilerServices/IndexerNameAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/IndexerNameAttribute.xml
@@ -111,12 +111,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="indexerName" Type="System.String" />
       </Parameters>
diff --git a/xml/System.Runtime.CompilerServices/InternalsVisibleToAttribute.xml b/xml/System.Runtime.CompilerServices/InternalsVisibleToAttribute.xml
index e90e40be202..e6f92e0e135 100644
--- a/xml/System.Runtime.CompilerServices/InternalsVisibleToAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/InternalsVisibleToAttribute.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that types that are ordinarily visible only within the current assembly are visible to a specified assembly.</summary>
diff --git a/xml/System.Runtime.CompilerServices/InterpolatedStringHandlerArgumentAttribute.xml b/xml/System.Runtime.CompilerServices/InterpolatedStringHandlerArgumentAttribute.xml
index 3f1ad2091a4..34a1e7af657 100644
--- a/xml/System.Runtime.CompilerServices/InterpolatedStringHandlerArgumentAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/InterpolatedStringHandlerArgumentAttribute.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates which arguments to a method involving an interpolated string handler should be passed to that handler.</summary>
diff --git a/xml/System.Runtime.CompilerServices/IteratorStateMachineAttribute.xml b/xml/System.Runtime.CompilerServices/IteratorStateMachineAttribute.xml
index 55456b75a82..c51095aaaa2 100644
--- a/xml/System.Runtime.CompilerServices/IteratorStateMachineAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/IteratorStateMachineAttribute.xml
@@ -121,12 +121,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="stateMachineType" Type="System.Type" />
       </Parameters>
diff --git a/xml/System.Runtime.CompilerServices/MetadataUpdateOriginalTypeAttribute.xml b/xml/System.Runtime.CompilerServices/MetadataUpdateOriginalTypeAttribute.xml
index 54004cfd5c5..732f73aa52e 100644
--- a/xml/System.Runtime.CompilerServices/MetadataUpdateOriginalTypeAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/MetadataUpdateOriginalTypeAttribute.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Emitted by the compiler when a type that's marked with <see cref="T:System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute" /> is updated during a hot reload session.</summary>
diff --git a/xml/System.Runtime.CompilerServices/NullableAttribute.xml b/xml/System.Runtime.CompilerServices/NullableAttribute.xml
index 27c8a656794..537eb2cf8ae 100644
--- a/xml/System.Runtime.CompilerServices/NullableAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/NullableAttribute.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Reserved for use by a compiler for tracking metadata. This attribute should not be used by developers in source code.</summary>
diff --git a/xml/System.Runtime.CompilerServices/PoolingAsyncValueTaskMethodBuilder.xml b/xml/System.Runtime.CompilerServices/PoolingAsyncValueTaskMethodBuilder.xml
index e2daae49ce4..546ec09b180 100644
--- a/xml/System.Runtime.CompilerServices/PoolingAsyncValueTaskMethodBuilder.xml
+++ b/xml/System.Runtime.CompilerServices/PoolingAsyncValueTaskMethodBuilder.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a builder for asynchronous methods that return a <see cref="T:System.Threading.Tasks.ValueTask" />.</summary>
diff --git a/xml/System.Runtime.CompilerServices/PoolingAsyncValueTaskMethodBuilder`1.xml b/xml/System.Runtime.CompilerServices/PoolingAsyncValueTaskMethodBuilder`1.xml
index 26ed2a7d452..dea431f36ef 100644
--- a/xml/System.Runtime.CompilerServices/PoolingAsyncValueTaskMethodBuilder`1.xml
+++ b/xml/System.Runtime.CompilerServices/PoolingAsyncValueTaskMethodBuilder`1.xml
@@ -31,10 +31,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TResult">The type of the result.</typeparam>
diff --git a/xml/System.Runtime.CompilerServices/ReadOnlyCollectionBuilder`1.xml b/xml/System.Runtime.CompilerServices/ReadOnlyCollectionBuilder`1.xml
index b182e3be1a0..de50c14847f 100644
--- a/xml/System.Runtime.CompilerServices/ReadOnlyCollectionBuilder`1.xml
+++ b/xml/System.Runtime.CompilerServices/ReadOnlyCollectionBuilder`1.xml
@@ -74,10 +74,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Runtime.CompilerServices/ReferenceAssemblyAttribute.xml b/xml/System.Runtime.CompilerServices/ReferenceAssemblyAttribute.xml
index 3f5de0bc68f..9d10f38d8e0 100644
--- a/xml/System.Runtime.CompilerServices/ReferenceAssemblyAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/ReferenceAssemblyAttribute.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Runtime.CompilerServices/RequiredAttributeAttribute.xml b/xml/System.Runtime.CompilerServices/RequiredAttributeAttribute.xml
index e33a5a207f1..b2af5bef2c7 100644
--- a/xml/System.Runtime.CompilerServices/RequiredAttributeAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/RequiredAttributeAttribute.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.CompilerServices/RuntimeFeature.xml b/xml/System.Runtime.CompilerServices/RuntimeFeature.xml
index 41a49f94725..ac87cb0ee1e 100644
--- a/xml/System.Runtime.CompilerServices/RuntimeFeature.xml
+++ b/xml/System.Runtime.CompilerServices/RuntimeFeature.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines APIs to determine whether specific features are supported by the common language runtime.</summary>
diff --git a/xml/System.Runtime.CompilerServices/RuntimeHelpers+CleanupCode.xml b/xml/System.Runtime.CompilerServices/RuntimeHelpers+CleanupCode.xml
index f971fcdb4ac..f013d37170b 100644
--- a/xml/System.Runtime.CompilerServices/RuntimeHelpers+CleanupCode.xml
+++ b/xml/System.Runtime.CompilerServices/RuntimeHelpers+CleanupCode.xml
@@ -40,10 +40,6 @@
     <BaseTypeName>System.Delegate</BaseTypeName>
   </Base>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-2.0">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Runtime.CompilerServices/RuntimeHelpers+TryCode.xml b/xml/System.Runtime.CompilerServices/RuntimeHelpers+TryCode.xml
index 6733916fb1e..08a91b128db 100644
--- a/xml/System.Runtime.CompilerServices/RuntimeHelpers+TryCode.xml
+++ b/xml/System.Runtime.CompilerServices/RuntimeHelpers+TryCode.xml
@@ -40,10 +40,6 @@
     <BaseTypeName>System.Delegate</BaseTypeName>
   </Base>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-2.0">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Runtime.CompilerServices/RuntimeHelpers.xml b/xml/System.Runtime.CompilerServices/RuntimeHelpers.xml
index 42bf29d4119..9c8840a520d 100644
--- a/xml/System.Runtime.CompilerServices/RuntimeHelpers.xml
+++ b/xml/System.Runtime.CompilerServices/RuntimeHelpers.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -133,12 +129,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -177,12 +167,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlySpan&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -312,10 +296,6 @@ This method is intended for compiler use rather than use directly in code. `T` m
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -461,10 +441,6 @@ This method is intended for compiler use rather than use directly in code. `T` m
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -521,10 +497,6 @@ This method is intended for compiler use rather than use directly in code. `T` m
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -755,12 +727,6 @@ This method is intended for compiler use rather than use directly in code. `T` m
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1197,10 +1163,6 @@ This method is intended for compiler use rather than use directly in code. `T` m
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Runtime.CompilerServices/RuntimeWrappedException.xml b/xml/System.Runtime.CompilerServices/RuntimeWrappedException.xml
index 617e5e67d6d..b77e6d72d27 100644
--- a/xml/System.Runtime.CompilerServices/RuntimeWrappedException.xml
+++ b/xml/System.Runtime.CompilerServices/RuntimeWrappedException.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Runtime.CompilerServices/StateMachineAttribute.xml b/xml/System.Runtime.CompilerServices/StateMachineAttribute.xml
index 0fa39712fa4..b33a379dda7 100644
--- a/xml/System.Runtime.CompilerServices/StateMachineAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/StateMachineAttribute.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Runtime.CompilerServices/StrongBox`1.xml b/xml/System.Runtime.CompilerServices/StrongBox`1.xml
index 03053d51f70..5ab28e2276e 100644
--- a/xml/System.Runtime.CompilerServices/StrongBox`1.xml
+++ b/xml/System.Runtime.CompilerServices/StrongBox`1.xml
@@ -150,10 +150,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Runtime.CompilerServices/SwitchExpressionException.xml b/xml/System.Runtime.CompilerServices/SwitchExpressionException.xml
index d3264cf74d4..2d73d8e3838 100644
--- a/xml/System.Runtime.CompilerServices/SwitchExpressionException.xml
+++ b/xml/System.Runtime.CompilerServices/SwitchExpressionException.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates that a switch expression that was non-exhaustive failed to match its input at runtime. The exception optionally contains an object representing the unmatched value.</summary>
@@ -271,10 +267,6 @@ A C# example of an expression that would throw this exception:
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -319,10 +311,6 @@ A C# example of an expression that would throw this exception:
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Runtime.CompilerServices/TaskAwaiter.xml b/xml/System.Runtime.CompilerServices/TaskAwaiter.xml
index 9974a416426..f80300f34d0 100644
--- a/xml/System.Runtime.CompilerServices/TaskAwaiter.xml
+++ b/xml/System.Runtime.CompilerServices/TaskAwaiter.xml
@@ -228,10 +228,6 @@ This type is intended for compiler use only.
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -303,10 +299,6 @@ This type is intended for compiler use only.
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Runtime.CompilerServices/TaskAwaiter`1.xml b/xml/System.Runtime.CompilerServices/TaskAwaiter`1.xml
index 2155b68c320..52fae62931d 100644
--- a/xml/System.Runtime.CompilerServices/TaskAwaiter`1.xml
+++ b/xml/System.Runtime.CompilerServices/TaskAwaiter`1.xml
@@ -124,10 +124,6 @@ This type is intended for compiler use only.
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -244,10 +240,6 @@ This type is intended for compiler use only.
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -318,10 +310,6 @@ This type is intended for compiler use only.
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Runtime.CompilerServices/TypeForwardedFromAttribute.xml b/xml/System.Runtime.CompilerServices/TypeForwardedFromAttribute.xml
index fe086240ac4..ff87c59df8d 100644
--- a/xml/System.Runtime.CompilerServices/TypeForwardedFromAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/TypeForwardedFromAttribute.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies a source <see cref="T:System.Type" /> in another assembly.</summary>
diff --git a/xml/System.Runtime.CompilerServices/TypeForwardedToAttribute.xml b/xml/System.Runtime.CompilerServices/TypeForwardedToAttribute.xml
index 4c063ea2ef7..5469570489b 100644
--- a/xml/System.Runtime.CompilerServices/TypeForwardedToAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/TypeForwardedToAttribute.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies a destination <see cref="T:System.Type" /> in another assembly.</summary>
diff --git a/xml/System.Runtime.CompilerServices/Unsafe.xml b/xml/System.Runtime.CompilerServices/Unsafe.xml
index 5e3a2a6d887..72c2ea7b53b 100644
--- a/xml/System.Runtime.CompilerServices/Unsafe.xml
+++ b/xml/System.Runtime.CompilerServices/Unsafe.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains generic, low-level functionality for manipulating managed and unmanaged pointers.</summary>
@@ -130,10 +126,6 @@ Since the `Unsafe` APIs suppress typical type-safety validation, it is up to cal
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void*</ReturnType>
@@ -575,12 +567,6 @@ If `byteOffset` is a calculated value rather than a hardcoded literal, callers s
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
         <Attributes>
@@ -754,10 +740,6 @@ When casting a managed pointer from a narrower type to a wider type, the caller
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void*</ReturnType>
@@ -825,10 +807,6 @@ Unmanaged pointers are not tracked by the .NET garbage collector. If the origina
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue RefType="Ref">
         <ReturnType>T</ReturnType>
@@ -981,12 +959,6 @@ int ComputeSumOfElements(ref readonly int refToFirstElement, nint numElements)
       <AssemblyInfo>
         <AssemblyName>System.Runtime.CompilerServices.Unsafe</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TTo</ReturnType>
       </ReturnValue>
@@ -1139,10 +1111,6 @@ The return value is guaranteed stable if `origin` and `target` point to the same
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1225,10 +1193,6 @@ static void Copy<T>(void* destination, ref T source)
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1369,10 +1333,6 @@ This API corresponds to the `cpblk` opcode. Both the `destination` and `source`
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1488,10 +1448,6 @@ This API corresponds to the `unaligned.1 cpblk` opcode sequence. No alignment as
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1601,10 +1557,6 @@ This API corresponds to the `initblk` opcode. The `startAddress` pointer is assu
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1712,10 +1664,6 @@ This API corresponds to the `unaligned.1 initblk` opcode sequence. No alignment
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -2029,10 +1977,6 @@ The return value is guaranteed stable if `left` and `right` point to the same ma
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
@@ -2162,10 +2106,6 @@ The return value is guaranteed stable if `left` and `right` point to the same ma
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
@@ -2223,12 +2163,6 @@ The return value is guaranteed stable if `left` and `right` point to the same ma
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2380,10 +2314,6 @@ public static MyUnionStruct MyMethod() {
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void*</ReturnType>
@@ -2750,12 +2680,6 @@ If `byteOffset` is a calculated value rather than a hardcoded literal, callers s
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Ref">
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -2857,10 +2781,6 @@ For more information, including detailed discussion of the usage constraints of
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -2985,10 +2905,6 @@ For more information, including detailed discussion of the usage constraints of
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Runtime.CompilerServices/UnsafeAccessorAttribute.xml b/xml/System.Runtime.CompilerServices/UnsafeAccessorAttribute.xml
index d9f4d2abc9e..d5bb7572137 100644
--- a/xml/System.Runtime.CompilerServices/UnsafeAccessorAttribute.xml
+++ b/xml/System.Runtime.CompilerServices/UnsafeAccessorAttribute.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides access to an inaccessible member of a specific type.</summary>
diff --git a/xml/System.Runtime.CompilerServices/ValueTaskAwaiter.xml b/xml/System.Runtime.CompilerServices/ValueTaskAwaiter.xml
index 297592333ff..92f42a83ec4 100644
--- a/xml/System.Runtime.CompilerServices/ValueTaskAwaiter.xml
+++ b/xml/System.Runtime.CompilerServices/ValueTaskAwaiter.xml
@@ -159,12 +159,6 @@
         <AssemblyName>System.Threading.Tasks.Extensions</AssemblyName>
         <AssemblyVersion>4.2.0.1</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -206,12 +200,6 @@
         <AssemblyName>System.Threading.Tasks.Extensions</AssemblyName>
         <AssemblyVersion>4.2.0.1</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.CompilerServices/ValueTaskAwaiter`1.xml b/xml/System.Runtime.CompilerServices/ValueTaskAwaiter`1.xml
index 36d370552f2..d7a73bbcdae 100644
--- a/xml/System.Runtime.CompilerServices/ValueTaskAwaiter`1.xml
+++ b/xml/System.Runtime.CompilerServices/ValueTaskAwaiter`1.xml
@@ -103,12 +103,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TResult</ReturnType>
       </ReturnValue>
@@ -190,12 +184,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -240,12 +228,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.CompilerServices/YieldAwaitable+YieldAwaiter.xml b/xml/System.Runtime.CompilerServices/YieldAwaitable+YieldAwaiter.xml
index f5d7261392c..24f6e4c2209 100644
--- a/xml/System.Runtime.CompilerServices/YieldAwaitable+YieldAwaiter.xml
+++ b/xml/System.Runtime.CompilerServices/YieldAwaitable+YieldAwaiter.xml
@@ -215,10 +215,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -287,10 +283,6 @@
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Runtime.ExceptionServices/ExceptionDispatchInfo.xml b/xml/System.Runtime.ExceptionServices/ExceptionDispatchInfo.xml
index c0b8458816f..3e724c07181 100644
--- a/xml/System.Runtime.ExceptionServices/ExceptionDispatchInfo.xml
+++ b/xml/System.Runtime.ExceptionServices/ExceptionDispatchInfo.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an exception whose state is captured at a certain point in code.</summary>
diff --git a/xml/System.Runtime.ExceptionServices/FirstChanceExceptionEventArgs.xml b/xml/System.Runtime.ExceptionServices/FirstChanceExceptionEventArgs.xml
index 3cf80b5b205..5f4cae58c28 100644
--- a/xml/System.Runtime.ExceptionServices/FirstChanceExceptionEventArgs.xml
+++ b/xml/System.Runtime.ExceptionServices/FirstChanceExceptionEventArgs.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the notification event that is raised when a managed exception first occurs, before the common language runtime begins searching for event handlers.</summary>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/EXCEPINFO.xml b/xml/System.Runtime.InteropServices.ComTypes/EXCEPINFO.xml
index dcfde17c6b0..2e12ae6746e 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/EXCEPINFO.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/EXCEPINFO.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Describes the exceptions that occur during <see langword="IDispatch::Invoke" />.</summary>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/IAdviseSink.xml b/xml/System.Runtime.InteropServices.ComTypes/IAdviseSink.xml
index 6b12c929a64..ffeec5e9cad 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/IAdviseSink.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/IAdviseSink.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("0000010F-0000-0000-C000-000000000046")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("0000010F-0000-0000-C000-000000000046")&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/IBindCtx.xml b/xml/System.Runtime.InteropServices.ComTypes/IBindCtx.xml
index 2601ccb44af..6abb596ae8c 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/IBindCtx.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/IBindCtx.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("0000000e-0000-0000-C000-000000000046")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("0000000e-0000-0000-C000-000000000046")&gt;]</AttributeName>
@@ -111,12 +107,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -290,12 +280,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/IConnectionPoint.xml b/xml/System.Runtime.InteropServices.ComTypes/IConnectionPoint.xml
index b6d6ccb23c2..2af3802b7dc 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/IConnectionPoint.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/IConnectionPoint.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("B196B286-BAB4-101A-B69C-00AA00341D07")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("B196B286-BAB4-101A-B69C-00AA00341D07")&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/IConnectionPointContainer.xml b/xml/System.Runtime.InteropServices.ComTypes/IConnectionPointContainer.xml
index a0ac1043385..e9054c7b6e9 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/IConnectionPointContainer.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/IConnectionPointContainer.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("B196B284-BAB4-101A-B69C-00AA00341D07")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("B196B284-BAB4-101A-B69C-00AA00341D07")&gt;]</AttributeName>
@@ -166,12 +162,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/IDataObject.xml b/xml/System.Runtime.InteropServices.ComTypes/IDataObject.xml
index 9d78ee40df1..a528e62009d 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/IDataObject.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/IDataObject.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("0000010E-0000-0000-C000-000000000046")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("0000010E-0000-0000-C000-000000000046")&gt;]</AttributeName>
@@ -231,12 +227,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/IEnumConnectionPoints.xml b/xml/System.Runtime.InteropServices.ComTypes/IEnumConnectionPoints.xml
index 1212bc02d68..7aefe82b48e 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/IEnumConnectionPoints.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/IEnumConnectionPoints.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("B196B285-BAB4-101A-B69C-00AA00341D07")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("B196B285-BAB4-101A-B69C-00AA00341D07")&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/IEnumConnections.xml b/xml/System.Runtime.InteropServices.ComTypes/IEnumConnections.xml
index 11128dabb25..06cd9682b9e 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/IEnumConnections.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/IEnumConnections.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("B196B287-BAB4-101A-B69C-00AA00341D07")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("B196B287-BAB4-101A-B69C-00AA00341D07")&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/IEnumFORMATETC.xml b/xml/System.Runtime.InteropServices.ComTypes/IEnumFORMATETC.xml
index 4d571d72740..7f3ad25b76a 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/IEnumFORMATETC.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/IEnumFORMATETC.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("00000103-0000-0000-C000-000000000046")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("00000103-0000-0000-C000-000000000046")&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/IEnumMoniker.xml b/xml/System.Runtime.InteropServices.ComTypes/IEnumMoniker.xml
index a3e8e45ab79..45e308019fb 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/IEnumMoniker.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/IEnumMoniker.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("00000102-0000-0000-C000-000000000046")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("00000102-0000-0000-C000-000000000046")&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/IEnumSTATDATA.xml b/xml/System.Runtime.InteropServices.ComTypes/IEnumSTATDATA.xml
index ba86ed52321..bbd5bf53a9c 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/IEnumSTATDATA.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/IEnumSTATDATA.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("00000103-0000-0000-C000-000000000046")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("00000103-0000-0000-C000-000000000046")&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/IEnumString.xml b/xml/System.Runtime.InteropServices.ComTypes/IEnumString.xml
index 7ef697d2ffe..e61d27ba075 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/IEnumString.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/IEnumString.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("00000101-0000-0000-C000-000000000046")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("00000101-0000-0000-C000-000000000046")&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/IEnumVARIANT.xml b/xml/System.Runtime.InteropServices.ComTypes/IEnumVARIANT.xml
index d33e5047975..3b9108b5294 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/IEnumVARIANT.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/IEnumVARIANT.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("00020404-0000-0000-C000-000000000046")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("00020404-0000-0000-C000-000000000046")&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/IMoniker.xml b/xml/System.Runtime.InteropServices.ComTypes/IMoniker.xml
index 4c85557b404..20928fe246b 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/IMoniker.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/IMoniker.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("0000000f-0000-0000-C000-000000000046")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("0000000f-0000-0000-C000-000000000046")&gt;]</AttributeName>
@@ -380,12 +376,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -899,12 +889,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1143,12 +1127,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/IPersistFile.xml b/xml/System.Runtime.InteropServices.ComTypes/IPersistFile.xml
index f5c95da7887..c20d863bec4 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/IPersistFile.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/IPersistFile.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("0000010b-0000-0000-C000-000000000046")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("0000010b-0000-0000-C000-000000000046")&gt;]</AttributeName>
@@ -330,12 +326,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/IRunningObjectTable.xml b/xml/System.Runtime.InteropServices.ComTypes/IRunningObjectTable.xml
index 2499d1bd1a4..b91da8a6880 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/IRunningObjectTable.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/IRunningObjectTable.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("00000010-0000-0000-C000-000000000046")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("00000010-0000-0000-C000-000000000046")&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/IStream.xml b/xml/System.Runtime.InteropServices.ComTypes/IStream.xml
index 47ad068efe9..be9a5c524b5 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/IStream.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/IStream.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("0000000c-0000-0000-C000-000000000046")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("0000000c-0000-0000-C000-000000000046")&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/ITypeComp.xml b/xml/System.Runtime.InteropServices.ComTypes/ITypeComp.xml
index 61d20f52e19..17e4645db25 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/ITypeComp.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/ITypeComp.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("00020403-0000-0000-C000-000000000046")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("00020403-0000-0000-C000-000000000046")&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/ITypeInfo.xml b/xml/System.Runtime.InteropServices.ComTypes/ITypeInfo.xml
index 6969d59492a..0f725dcb286 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/ITypeInfo.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/ITypeInfo.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("00020401-0000-0000-C000-000000000046")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("00020401-0000-0000-C000-000000000046")&gt;]</AttributeName>
@@ -589,12 +585,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/ITypeInfo2.xml b/xml/System.Runtime.InteropServices.ComTypes/ITypeInfo2.xml
index 37e719b1825..a3d9cc356de 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/ITypeInfo2.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/ITypeInfo2.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("00020412-0000-0000-C000-000000000046")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("00020412-0000-0000-C000-000000000046")&gt;]</AttributeName>
@@ -1152,12 +1148,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/ITypeLib.xml b/xml/System.Runtime.InteropServices.ComTypes/ITypeLib.xml
index 289059123d0..ef97762e504 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/ITypeLib.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/ITypeLib.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("00020402-0000-0000-C000-000000000046")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("00020402-0000-0000-C000-000000000046")&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices.ComTypes/ITypeLib2.xml b/xml/System.Runtime.InteropServices.ComTypes/ITypeLib2.xml
index 7e9389946aa..aa2cd3308c9 100644
--- a/xml/System.Runtime.InteropServices.ComTypes/ITypeLib2.xml
+++ b/xml/System.Runtime.InteropServices.ComTypes/ITypeLib2.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.InterfaceType(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("00020411-0000-0000-C000-000000000046")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("00020411-0000-0000-C000-000000000046")&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices.JavaScript/JSException.xml b/xml/System.Runtime.InteropServices.JavaScript/JSException.xml
index 3bfc9a6bd65..7f36ff0a739 100644
--- a/xml/System.Runtime.InteropServices.JavaScript/JSException.xml
+++ b/xml/System.Runtime.InteropServices.JavaScript/JSException.xml
@@ -40,12 +40,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="msg" Type="System.String" />
       </Parameters>
diff --git a/xml/System.Runtime.InteropServices.JavaScript/JSFunctionBinding.xml b/xml/System.Runtime.InteropServices.JavaScript/JSFunctionBinding.xml
index 45af817ee6f..400f35070ed 100644
--- a/xml/System.Runtime.InteropServices.JavaScript/JSFunctionBinding.xml
+++ b/xml/System.Runtime.InteropServices.JavaScript/JSFunctionBinding.xml
@@ -66,12 +66,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.InteropServices.JavaScript.JSFunctionBinding</ReturnType>
       </ReturnValue>
@@ -112,12 +106,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.InteropServices.JavaScript.JSFunctionBinding</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices.JavaScript/JSHost.xml b/xml/System.Runtime.InteropServices.JavaScript/JSHost.xml
index 752d5ddea1b..c85453cf1c0 100644
--- a/xml/System.Runtime.InteropServices.JavaScript/JSHost.xml
+++ b/xml/System.Runtime.InteropServices.JavaScript/JSHost.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the JavaScript host environment where the .NET runtime is currently operating.</summary>
diff --git a/xml/System.Runtime.InteropServices.JavaScript/JSImportAttribute.xml b/xml/System.Runtime.InteropServices.JavaScript/JSImportAttribute.xml
index 39d07e7b3bf..7b58ad65d73 100644
--- a/xml/System.Runtime.InteropServices.JavaScript/JSImportAttribute.xml
+++ b/xml/System.Runtime.InteropServices.JavaScript/JSImportAttribute.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates that the JSImport source generator should create a managed wrapper to invoke a specific imported JavaScript function and marshal its arguments, return values, and exceptions.</summary>
@@ -133,10 +129,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Runtime.InteropServices.JavaScript/JSMarshalerArgument+ArgumentToJSCallback`1.xml b/xml/System.Runtime.InteropServices.JavaScript/JSMarshalerArgument+ArgumentToJSCallback`1.xml
index b29eaa3ce3b..7f81c38cbe3 100644
--- a/xml/System.Runtime.InteropServices.JavaScript/JSMarshalerArgument+ArgumentToJSCallback`1.xml
+++ b/xml/System.Runtime.InteropServices.JavaScript/JSMarshalerArgument+ArgumentToJSCallback`1.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg" Type="System.Runtime.InteropServices.JavaScript.JSMarshalerArgument" RefType="ref" />
diff --git a/xml/System.Runtime.InteropServices.JavaScript/JSMarshalerArgument+ArgumentToManagedCallback`1.xml b/xml/System.Runtime.InteropServices.JavaScript/JSMarshalerArgument+ArgumentToManagedCallback`1.xml
index d26f835b208..beb5052f13d 100644
--- a/xml/System.Runtime.InteropServices.JavaScript/JSMarshalerArgument+ArgumentToManagedCallback`1.xml
+++ b/xml/System.Runtime.InteropServices.JavaScript/JSMarshalerArgument+ArgumentToManagedCallback`1.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg" Type="System.Runtime.InteropServices.JavaScript.JSMarshalerArgument" RefType="ref" />
diff --git a/xml/System.Runtime.InteropServices.JavaScript/JSMarshalerArgument.xml b/xml/System.Runtime.InteropServices.JavaScript/JSMarshalerArgument.xml
index be9766963dc..ff4c671de3e 100644
--- a/xml/System.Runtime.InteropServices.JavaScript/JSMarshalerArgument.xml
+++ b/xml/System.Runtime.InteropServices.JavaScript/JSMarshalerArgument.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains the storage and type information for an argument or return value on the native stack.
@@ -107,12 +103,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -140,12 +130,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -173,12 +157,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1016,12 +994,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1049,12 +1021,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1082,12 +1048,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1195,12 +1155,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1228,12 +1182,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1281,12 +1229,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1334,12 +1276,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1387,12 +1323,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1451,12 +1381,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1515,12 +1439,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1590,12 +1508,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1665,12 +1577,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1832,12 +1738,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1865,12 +1765,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1898,12 +1792,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2741,12 +2629,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2774,12 +2656,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2807,12 +2683,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2920,12 +2790,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2953,12 +2817,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3006,12 +2864,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3059,12 +2911,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3112,12 +2958,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3176,12 +3016,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3240,12 +3074,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3315,12 +3143,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3390,12 +3212,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices.JavaScript/JSMarshalerType.xml b/xml/System.Runtime.InteropServices.JavaScript/JSMarshalerType.xml
index 3e1d25b1ed1..b55d3579797 100644
--- a/xml/System.Runtime.InteropServices.JavaScript/JSMarshalerType.xml
+++ b/xml/System.Runtime.InteropServices.JavaScript/JSMarshalerType.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents type metadata about the marshaller that are necessary for marshalling function arguments.
diff --git a/xml/System.Runtime.InteropServices.JavaScript/JSObject.xml b/xml/System.Runtime.InteropServices.JavaScript/JSObject.xml
index a517e840e5c..c29578cf1b8 100644
--- a/xml/System.Runtime.InteropServices.JavaScript/JSObject.xml
+++ b/xml/System.Runtime.InteropServices.JavaScript/JSObject.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a reference to an object in the JavaScript host environment and enables interaction with it as a proxy.</summary>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/ArrayMarshaller`2+ManagedToUnmanagedIn.xml b/xml/System.Runtime.InteropServices.Marshalling/ArrayMarshaller`2+ManagedToUnmanagedIn.xml
index fb723dd605d..0f13b289fb0 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/ArrayMarshaller`2+ManagedToUnmanagedIn.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/ArrayMarshaller`2+ManagedToUnmanagedIn.xml
@@ -213,12 +213,6 @@ The `buffer` must not be movable - that is, it should not be
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Ref">
         <ReturnType>T</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/ComVariant.xml b/xml/System.Runtime.InteropServices.Marshalling/ComVariant.xml
index cbf82c870b0..9f68c51ee85 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/ComVariant.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/ComVariant.xml
@@ -39,10 +39,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
@@ -71,12 +67,6 @@
         <AssemblyName>System.Runtime.InteropServices</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.InteropServices.Marshalling.ComVariant</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/ComVariantMarshaller.xml b/xml/System.Runtime.InteropServices.Marshalling/ComVariantMarshaller.xml
index 5b8da688013..93624524719 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/ComVariantMarshaller.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/ComVariantMarshaller.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute>
       <AttributeName Language="C#">[System.Runtime.InteropServices.Marshalling.CustomMarshaller(typeof(System.Object), System.Runtime.InteropServices.Marshalling.MarshalMode.Default, typeof(System.Runtime.InteropServices.Marshalling.ComVariantMarshaller))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Marshalling.CustomMarshaller(typeof(System.Object), System.Runtime.InteropServices.Marshalling.MarshalMode.Default, typeof(System.Runtime.InteropServices.Marshalling.ComVariantMarshaller))&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/CustomMarshallerAttribute+GenericPlaceholder.xml b/xml/System.Runtime.InteropServices.Marshalling/CustomMarshallerAttribute+GenericPlaceholder.xml
index b48e431404c..d1fb95371d9 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/CustomMarshallerAttribute+GenericPlaceholder.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/CustomMarshallerAttribute+GenericPlaceholder.xml
@@ -15,12 +15,6 @@
     <BaseTypeName>System.ValueType</BaseTypeName>
   </Base>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Placeholder type for a generic parameter.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/CustomMarshallerAttribute.xml b/xml/System.Runtime.InteropServices.Marshalling/CustomMarshallerAttribute.xml
index df4ad528579..0eaec61618e 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/CustomMarshallerAttribute.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/CustomMarshallerAttribute.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates an entry point type for defining a marshaller.</summary>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/ExceptionAsVoidMarshaller.xml b/xml/System.Runtime.InteropServices.Marshalling/ExceptionAsVoidMarshaller.xml
index 4b5f116944c..19d21d472c1 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/ExceptionAsVoidMarshaller.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/ExceptionAsVoidMarshaller.xml
@@ -38,12 +38,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/GeneratedComInterfaceAttribute.xml b/xml/System.Runtime.InteropServices.Marshalling/GeneratedComInterfaceAttribute.xml
index 67d5e50a2a1..4a671fad27c 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/GeneratedComInterfaceAttribute.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/GeneratedComInterfaceAttribute.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that the attributed type is a COM interface and that the source generator should generate code for it.</summary>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/IIUnknownCacheStrategy.xml b/xml/System.Runtime.InteropServices.Marshalling/IIUnknownCacheStrategy.xml
index f6f1feeb481..cd73ffee78e 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/IIUnknownCacheStrategy.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/IIUnknownCacheStrategy.xml
@@ -35,12 +35,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/IIUnknownDerivedDetails.xml b/xml/System.Runtime.InteropServices.Marshalling/IIUnknownDerivedDetails.xml
index 927086c0f1b..3e992a4d0d8 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/IIUnknownDerivedDetails.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/IIUnknownDerivedDetails.xml
@@ -62,10 +62,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/IIUnknownInterfaceDetailsStrategy.xml b/xml/System.Runtime.InteropServices.Marshalling/IIUnknownInterfaceDetailsStrategy.xml
index 97ebb5a8ff1..79b5607030e 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/IIUnknownInterfaceDetailsStrategy.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/IIUnknownInterfaceDetailsStrategy.xml
@@ -16,10 +16,6 @@
       <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines a strategy for acquiring interface details.</summary>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/IUnknownDerivedAttribute`2.xml b/xml/System.Runtime.InteropServices.Marshalling/IUnknownDerivedAttribute`2.xml
index 244d610c767..aa20b56cda7 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/IUnknownDerivedAttribute`2.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/IUnknownDerivedAttribute`2.xml
@@ -115,10 +115,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/IUnmanagedVirtualMethodTableProvider.xml b/xml/System.Runtime.InteropServices.Marshalling/IUnmanagedVirtualMethodTableProvider.xml
index de09c18075c..20e7ac42f38 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/IUnmanagedVirtualMethodTableProvider.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/IUnmanagedVirtualMethodTableProvider.xml
@@ -16,10 +16,6 @@
       <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about a virtual method table for a managed interface to enable invoking methods in the virtual method table.</summary>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/MarshalUsingAttribute.xml b/xml/System.Runtime.InteropServices.Marshalling/MarshalUsingAttribute.xml
index 3f0ff8525b6..6475ce393dc 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/MarshalUsingAttribute.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/MarshalUsingAttribute.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Attribute used to provide a custom marshaller type or size information for marshalling.</summary>
@@ -201,10 +197,6 @@ This value corresponds to how many pointer indirections would be required to get
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/NativeMarshallingAttribute.xml b/xml/System.Runtime.InteropServices.Marshalling/NativeMarshallingAttribute.xml
index da20b47d597..9e89ff9a4e3 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/NativeMarshallingAttribute.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/NativeMarshallingAttribute.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Attribute used to provide a default custom marshaller type for a given managed type.</summary>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/ReadOnlySpanMarshaller`2+ManagedToUnmanagedIn.xml b/xml/System.Runtime.InteropServices.Marshalling/ReadOnlySpanMarshaller`2+ManagedToUnmanagedIn.xml
index 2b5ce9ae6a8..74ef199c526 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/ReadOnlySpanMarshaller`2+ManagedToUnmanagedIn.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/ReadOnlySpanMarshaller`2+ManagedToUnmanagedIn.xml
@@ -205,12 +205,6 @@ The `buffer` must not be movable - that is, it should not be
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Ref">
         <ReturnType>T</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/SafeHandleMarshaller`1+ManagedToUnmanagedIn.xml b/xml/System.Runtime.InteropServices.Marshalling/SafeHandleMarshaller`1+ManagedToUnmanagedIn.xml
index 9d762ea50bb..68daa4d6285 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/SafeHandleMarshaller`1+ManagedToUnmanagedIn.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/SafeHandleMarshaller`1+ManagedToUnmanagedIn.xml
@@ -67,12 +67,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/SafeHandleMarshaller`1+ManagedToUnmanagedOut.xml b/xml/System.Runtime.InteropServices.Marshalling/SafeHandleMarshaller`1+ManagedToUnmanagedOut.xml
index 7d74d3fc26c..4dc0d84c9d4 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/SafeHandleMarshaller`1+ManagedToUnmanagedOut.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/SafeHandleMarshaller`1+ManagedToUnmanagedOut.xml
@@ -110,12 +110,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/SafeHandleMarshaller`1+ManagedToUnmanagedRef.xml b/xml/System.Runtime.InteropServices.Marshalling/SafeHandleMarshaller`1+ManagedToUnmanagedRef.xml
index feeb4e2a008..75bace3bf3b 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/SafeHandleMarshaller`1+ManagedToUnmanagedRef.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/SafeHandleMarshaller`1+ManagedToUnmanagedRef.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Marshals a <see cref="T:System.Runtime.InteropServices.SafeHandle" /> as its underlying handle value as a <see langword="ref" /> parameter in managed-to-unmanaged scenarios like P/Invokes.</summary>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/SpanMarshaller`2+ManagedToUnmanagedIn.xml b/xml/System.Runtime.InteropServices.Marshalling/SpanMarshaller`2+ManagedToUnmanagedIn.xml
index c0317e44b26..ebf1495ad19 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/SpanMarshaller`2+ManagedToUnmanagedIn.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/SpanMarshaller`2+ManagedToUnmanagedIn.xml
@@ -205,12 +205,6 @@ The `buffer` must not be movable - that is, it should not be
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Ref">
         <ReturnType>T</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/StrategyBasedComWrappers.xml b/xml/System.Runtime.InteropServices.Marshalling/StrategyBasedComWrappers.xml
index c446c5a5a53..3f240bae021 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/StrategyBasedComWrappers.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/StrategyBasedComWrappers.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A <see cref="T:System.Runtime.InteropServices.ComWrappers" />-based type that uses customizable strategy objects to implement COM object wrappers and managed object wrappers exposed to COM.</summary>
@@ -63,12 +59,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.InteropServices.ComWrappers+ComInterfaceEntry*</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices.Marshalling/Utf16StringMarshaller.xml b/xml/System.Runtime.InteropServices.Marshalling/Utf16StringMarshaller.xml
index 04963d1636f..ae1c573723f 100644
--- a/xml/System.Runtime.InteropServices.Marshalling/Utf16StringMarshaller.xml
+++ b/xml/System.Runtime.InteropServices.Marshalling/Utf16StringMarshaller.xml
@@ -128,12 +128,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Readonly">
         <ReturnType>System.Char</ReturnType>
         <Attributes>
diff --git a/xml/System.Runtime.InteropServices.ObjectiveC/ObjectiveCMarshal.xml b/xml/System.Runtime.InteropServices.ObjectiveC/ObjectiveCMarshal.xml
index 570fca9d8f0..df33c45a8fe 100644
--- a/xml/System.Runtime.InteropServices.ObjectiveC/ObjectiveCMarshal.xml
+++ b/xml/System.Runtime.InteropServices.ObjectiveC/ObjectiveCMarshal.xml
@@ -197,12 +197,6 @@ Providing an override can enable support for Objective-C variadic argument suppo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices/ArrayWithOffset.xml b/xml/System.Runtime.InteropServices/ArrayWithOffset.xml
index 27991d9e5e4..50db1cd4ea5 100644
--- a/xml/System.Runtime.InteropServices/ArrayWithOffset.xml
+++ b/xml/System.Runtime.InteropServices/ArrayWithOffset.xml
@@ -65,10 +65,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/BStrWrapper.xml b/xml/System.Runtime.InteropServices/BStrWrapper.xml
index 9189f1ee27e..536e851e138 100644
--- a/xml/System.Runtime.InteropServices/BStrWrapper.xml
+++ b/xml/System.Runtime.InteropServices/BStrWrapper.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/CLong.xml b/xml/System.Runtime.InteropServices/CLong.xml
index e64ef0bf219..345138c4e86 100644
--- a/xml/System.Runtime.InteropServices/CLong.xml
+++ b/xml/System.Runtime.InteropServices/CLong.xml
@@ -112,12 +112,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -211,12 +205,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices/COMException.xml b/xml/System.Runtime.InteropServices/COMException.xml
index a13b0165cad..1650a4921e7 100644
--- a/xml/System.Runtime.InteropServices/COMException.xml
+++ b/xml/System.Runtime.InteropServices/COMException.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -243,10 +239,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -433,10 +425,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/CULong.xml b/xml/System.Runtime.InteropServices/CULong.xml
index e3afe33fa50..65ed3722fbf 100644
--- a/xml/System.Runtime.InteropServices/CULong.xml
+++ b/xml/System.Runtime.InteropServices/CULong.xml
@@ -112,12 +112,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -211,12 +205,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices/CoClassAttribute.xml b/xml/System.Runtime.InteropServices/CoClassAttribute.xml
index 9e154a6d4d5..dc061351bc9 100644
--- a/xml/System.Runtime.InteropServices/CoClassAttribute.xml
+++ b/xml/System.Runtime.InteropServices/CoClassAttribute.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/CollectionsMarshal.xml b/xml/System.Runtime.InteropServices/CollectionsMarshal.xml
index 3d32ee7e66c..e10da293250 100644
--- a/xml/System.Runtime.InteropServices/CollectionsMarshal.xml
+++ b/xml/System.Runtime.InteropServices/CollectionsMarshal.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>An unsafe class that provides a set of methods to access the underlying data representations of collections.</summary>
@@ -48,12 +44,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Span&lt;T&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices/ComAliasNameAttribute.xml b/xml/System.Runtime.InteropServices/ComAliasNameAttribute.xml
index a1f3c17054c..da07a7254cc 100644
--- a/xml/System.Runtime.InteropServices/ComAliasNameAttribute.xml
+++ b/xml/System.Runtime.InteropServices/ComAliasNameAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/ComAwareEventInfo.xml b/xml/System.Runtime.InteropServices/ComAwareEventInfo.xml
index e82df12b257..e9a759da23b 100644
--- a/xml/System.Runtime.InteropServices/ComAwareEventInfo.xml
+++ b/xml/System.Runtime.InteropServices/ComAwareEventInfo.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.1;netstandard-1.2">
       <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -299,10 +295,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -344,12 +336,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
       </ReturnValue>
@@ -588,12 +574,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
       </ReturnValue>
@@ -647,12 +627,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
       </ReturnValue>
@@ -864,10 +838,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
diff --git a/xml/System.Runtime.InteropServices/ComDefaultInterfaceAttribute.xml b/xml/System.Runtime.InteropServices/ComDefaultInterfaceAttribute.xml
index 2238ac80aae..1ee89d94ec5 100644
--- a/xml/System.Runtime.InteropServices/ComDefaultInterfaceAttribute.xml
+++ b/xml/System.Runtime.InteropServices/ComDefaultInterfaceAttribute.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/ComEventInterfaceAttribute.xml b/xml/System.Runtime.InteropServices/ComEventInterfaceAttribute.xml
index b2b3ddd7789..d80b8376436 100644
--- a/xml/System.Runtime.InteropServices/ComEventInterfaceAttribute.xml
+++ b/xml/System.Runtime.InteropServices/ComEventInterfaceAttribute.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/ComEventsHelper.xml b/xml/System.Runtime.InteropServices/ComEventsHelper.xml
index 2bb427a29ec..2e23e696dc8 100644
--- a/xml/System.Runtime.InteropServices/ComEventsHelper.xml
+++ b/xml/System.Runtime.InteropServices/ComEventsHelper.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods that enable .NET delegates that handle events to be added and removed from COM objects.</summary>
diff --git a/xml/System.Runtime.InteropServices/ComSourceInterfacesAttribute.xml b/xml/System.Runtime.InteropServices/ComSourceInterfacesAttribute.xml
index 352887e4bab..8c4e1532e63 100644
--- a/xml/System.Runtime.InteropServices/ComSourceInterfacesAttribute.xml
+++ b/xml/System.Runtime.InteropServices/ComSourceInterfacesAttribute.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Class, Inherited=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Class, Inherited=false)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/ComWrappers+ComInterfaceDispatch.xml b/xml/System.Runtime.InteropServices/ComWrappers+ComInterfaceDispatch.xml
index 68bb117bf1a..feb4d773f92 100644
--- a/xml/System.Runtime.InteropServices/ComWrappers+ComInterfaceDispatch.xml
+++ b/xml/System.Runtime.InteropServices/ComWrappers+ComInterfaceDispatch.xml
@@ -17,12 +17,6 @@
     <BaseTypeName>System.ValueType</BaseTypeName>
   </Base>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>An application binary interface for function dispatch of a COM interface.</summary>
     <remarks>To be added.</remarks>
@@ -43,12 +37,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices/ComWrappers+ComInterfaceEntry.xml b/xml/System.Runtime.InteropServices/ComWrappers+ComInterfaceEntry.xml
index 37db3b54488..af3a282bedb 100644
--- a/xml/System.Runtime.InteropServices/ComWrappers+ComInterfaceEntry.xml
+++ b/xml/System.Runtime.InteropServices/ComWrappers+ComInterfaceEntry.xml
@@ -17,12 +17,6 @@
     <BaseTypeName>System.ValueType</BaseTypeName>
   </Base>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Interface type and pointer to targeted VTable.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Runtime.InteropServices/ComWrappers.xml b/xml/System.Runtime.InteropServices/ComWrappers.xml
index 1ef8203204e..65b57057638 100644
--- a/xml/System.Runtime.InteropServices/ComWrappers.xml
+++ b/xml/System.Runtime.InteropServices/ComWrappers.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Class for managing wrappers of COM IUnknown types.</summary>
@@ -92,12 +88,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.InteropServices.ComWrappers+ComInterfaceEntry*</ReturnType>
       </ReturnValue>
@@ -149,12 +139,6 @@ If the interface entries cannot be created and a negative `count` or `null` and
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -547,12 +531,6 @@ This function can only be called a single time. Subsequent calls to this functio
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices/CurrencyWrapper.xml b/xml/System.Runtime.InteropServices/CurrencyWrapper.xml
index 942475f6f70..bff6c5ed85f 100644
--- a/xml/System.Runtime.InteropServices/CurrencyWrapper.xml
+++ b/xml/System.Runtime.InteropServices/CurrencyWrapper.xml
@@ -172,12 +172,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="obj" Type="System.Object" />
       </Parameters>
diff --git a/xml/System.Runtime.InteropServices/DefaultParameterValueAttribute.xml b/xml/System.Runtime.InteropServices/DefaultParameterValueAttribute.xml
index 90650cfea15..898193c399f 100644
--- a/xml/System.Runtime.InteropServices/DefaultParameterValueAttribute.xml
+++ b/xml/System.Runtime.InteropServices/DefaultParameterValueAttribute.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Sets the default value of a parameter when called from a language that supports default parameters. This class cannot be inherited.</summary>
diff --git a/xml/System.Runtime.InteropServices/DispatchWrapper.xml b/xml/System.Runtime.InteropServices/DispatchWrapper.xml
index 3506ff867af..bb3e160f48d 100644
--- a/xml/System.Runtime.InteropServices/DispatchWrapper.xml
+++ b/xml/System.Runtime.InteropServices/DispatchWrapper.xml
@@ -64,10 +64,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/DllImportAttribute.xml b/xml/System.Runtime.InteropServices/DllImportAttribute.xml
index b39a1add823..c85562e3a10 100644
--- a/xml/System.Runtime.InteropServices/DllImportAttribute.xml
+++ b/xml/System.Runtime.InteropServices/DllImportAttribute.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/ErrorWrapper.xml b/xml/System.Runtime.InteropServices/ErrorWrapper.xml
index 1daa1c4670d..02b8ee9261b 100644
--- a/xml/System.Runtime.InteropServices/ErrorWrapper.xml
+++ b/xml/System.Runtime.InteropServices/ErrorWrapper.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/ExternalException.xml b/xml/System.Runtime.InteropServices/ExternalException.xml
index cf3c17f879a..be1ca0f8919 100644
--- a/xml/System.Runtime.InteropServices/ExternalException.xml
+++ b/xml/System.Runtime.InteropServices/ExternalException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -229,10 +225,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -449,12 +441,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices/GCHandle.xml b/xml/System.Runtime.InteropServices/GCHandle.xml
index 7ee8ea52969..5fc404b4ca2 100644
--- a/xml/System.Runtime.InteropServices/GCHandle.xml
+++ b/xml/System.Runtime.InteropServices/GCHandle.xml
@@ -71,10 +71,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/GuidAttribute.xml b/xml/System.Runtime.InteropServices/GuidAttribute.xml
index cf84b4727d2..ad8faeaa18d 100644
--- a/xml/System.Runtime.InteropServices/GuidAttribute.xml
+++ b/xml/System.Runtime.InteropServices/GuidAttribute.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/HandleCollector.xml b/xml/System.Runtime.InteropServices/HandleCollector.xml
index d18c384cfe9..93a3d52b319 100644
--- a/xml/System.Runtime.InteropServices/HandleCollector.xml
+++ b/xml/System.Runtime.InteropServices/HandleCollector.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Tracks outstanding handles and forces a garbage collection when the specified threshold is reached.</summary>
@@ -104,10 +100,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -161,12 +153,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" />
         <Parameter Name="initialThreshold" Type="System.Int32" />
diff --git a/xml/System.Runtime.InteropServices/HandleRef.xml b/xml/System.Runtime.InteropServices/HandleRef.xml
index 03579e89de6..531b596e5fb 100644
--- a/xml/System.Runtime.InteropServices/HandleRef.xml
+++ b/xml/System.Runtime.InteropServices/HandleRef.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/ICustomAdapter.xml b/xml/System.Runtime.InteropServices/ICustomAdapter.xml
index 8a774ec4d8e..7dbd5df6ae3 100644
--- a/xml/System.Runtime.InteropServices/ICustomAdapter.xml
+++ b/xml/System.Runtime.InteropServices/ICustomAdapter.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Obsolete("ICustomAdapter may be unavailable in future releases.")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("ICustomAdapter may be unavailable in future releases.")&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/ICustomFactory.xml b/xml/System.Runtime.InteropServices/ICustomFactory.xml
index b83a8428ac5..99fc2a0d8f6 100644
--- a/xml/System.Runtime.InteropServices/ICustomFactory.xml
+++ b/xml/System.Runtime.InteropServices/ICustomFactory.xml
@@ -38,10 +38,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/ICustomMarshaler.xml b/xml/System.Runtime.InteropServices/ICustomMarshaler.xml
index fbe6982dab6..10e983dbace 100644
--- a/xml/System.Runtime.InteropServices/ICustomMarshaler.xml
+++ b/xml/System.Runtime.InteropServices/ICustomMarshaler.xml
@@ -38,10 +38,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/ImmutableCollectionsMarshal.xml b/xml/System.Runtime.InteropServices/ImmutableCollectionsMarshal.xml
index 81d7df60bfc..c9b5fe0b783 100644
--- a/xml/System.Runtime.InteropServices/ImmutableCollectionsMarshal.xml
+++ b/xml/System.Runtime.InteropServices/ImmutableCollectionsMarshal.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>An unsafe class that provides a set of methods to access the underlying data representations of immutable collections.</summary>
diff --git a/xml/System.Runtime.InteropServices/ImportedFromTypeLibAttribute.xml b/xml/System.Runtime.InteropServices/ImportedFromTypeLibAttribute.xml
index 5f83ecfa273..012beb1b5c1 100644
--- a/xml/System.Runtime.InteropServices/ImportedFromTypeLibAttribute.xml
+++ b/xml/System.Runtime.InteropServices/ImportedFromTypeLibAttribute.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/InvalidComObjectException.xml b/xml/System.Runtime.InteropServices/InvalidComObjectException.xml
index d675417d81e..e8ff3bf50fa 100644
--- a/xml/System.Runtime.InteropServices/InvalidComObjectException.xml
+++ b/xml/System.Runtime.InteropServices/InvalidComObjectException.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -252,10 +248,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/InvalidOleVariantTypeException.xml b/xml/System.Runtime.InteropServices/InvalidOleVariantTypeException.xml
index 00f90f73f1c..3b2315f6bc0 100644
--- a/xml/System.Runtime.InteropServices/InvalidOleVariantTypeException.xml
+++ b/xml/System.Runtime.InteropServices/InvalidOleVariantTypeException.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -250,10 +246,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/LibraryImportAttribute.xml b/xml/System.Runtime.InteropServices/LibraryImportAttribute.xml
index a5e63ab02f9..5b10ba5b343 100644
--- a/xml/System.Runtime.InteropServices/LibraryImportAttribute.xml
+++ b/xml/System.Runtime.InteropServices/LibraryImportAttribute.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates that a source generator should create a function for marshalling arguments instead of relying on the runtime to generate an equivalent marshalling function at run time.</summary>
@@ -58,12 +54,6 @@ The current built-in source generator only supports C# and only supplies an impl
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="libraryName" Type="System.String" />
       </Parameters>
@@ -115,10 +105,6 @@ The current built-in source generator only supports C# and only supplies an impl
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Runtime.InteropServices/ManagedToNativeComInteropStubAttribute.xml b/xml/System.Runtime.InteropServices/ManagedToNativeComInteropStubAttribute.xml
index af9a25d6779..0c153268424 100644
--- a/xml/System.Runtime.InteropServices/ManagedToNativeComInteropStubAttribute.xml
+++ b/xml/System.Runtime.InteropServices/ManagedToNativeComInteropStubAttribute.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netstandard-2.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Method, Inherited=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Method, Inherited=false)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/Marshal.xml b/xml/System.Runtime.InteropServices/Marshal.xml
index a8ac4b0506e..28c9921c255 100644
--- a/xml/System.Runtime.InteropServices/Marshal.xml
+++ b/xml/System.Runtime.InteropServices/Marshal.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5">
       <AttributeName Language="C#">[System.Security.SuppressUnmanagedCodeSecurity]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SuppressUnmanagedCodeSecurity&gt;]</AttributeName>
@@ -2087,10 +2083,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -2181,10 +2173,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TWrapper</ReturnType>
@@ -2362,10 +2350,6 @@
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -3108,10 +3092,6 @@ The code retrieves a reference to an instance of Microsoft Word successfully. Ho
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.IntPtr</ReturnType>
@@ -3724,10 +3704,6 @@ The code retrieves a reference to an instance of Microsoft Word successfully. Ho
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Exception</ReturnType>
@@ -3796,10 +3772,6 @@ The code retrieves a reference to an instance of Microsoft Word successfully. Ho
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Exception</ReturnType>
@@ -4133,10 +4105,6 @@ The code retrieves a reference to an instance of Microsoft Word successfully. Ho
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
@@ -4920,10 +4888,6 @@ On .NET 6 and later versions, this method is functionally equivalent to <xref:Sy
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4998,10 +4962,6 @@ On .NET 6 and later versions, this method is functionally equivalent to <xref:Sy
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5172,10 +5132,6 @@ On .NET 6 and later versions, this method is functionally equivalent to <xref:Sy
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -5257,10 +5213,6 @@ On .NET 6 and later versions, this method is functionally equivalent to <xref:Sy
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
@@ -5779,10 +5731,6 @@ On .NET 6 and later versions, this method is functionally equivalent to <xref:Sy
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -7020,10 +6968,6 @@ On .NET 6 and later versions, this method is functionally equivalent to <xref:Sy
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -7172,10 +7116,6 @@ On .NET 6 and later versions, this method is functionally equivalent to <xref:Sy
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -7244,10 +7184,6 @@ On .NET 6 and later versions, this method is functionally equivalent to <xref:Sy
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -7410,10 +7346,6 @@ On .NET 6 and later versions, this method is functionally equivalent to <xref:Sy
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -7536,10 +7468,6 @@ On .NET 6 and later versions, this method is functionally equivalent to <xref:Sy
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-1.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -7871,10 +7799,6 @@ On .NET 6 and later versions, this method is functionally equivalent to <xref:Sy
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
@@ -10532,12 +10456,6 @@ The system error is based on the current operating system&mdash;that is, `errno`
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.5;netstandard-1.6;netstandard-2.0;netstandard-2.1">System.Int32</ReturnType>
       </ReturnValue>
@@ -10676,10 +10594,6 @@ The system error is based on the current operating system&mdash;that is, `errno`
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.IntPtr</ReturnType>
@@ -10747,10 +10661,6 @@ The system error is based on the current operating system&mdash;that is, `errno`
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.IntPtr</ReturnType>
@@ -10809,10 +10719,6 @@ The system error is based on the current operating system&mdash;that is, `errno`
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -10885,10 +10791,6 @@ The system error is based on the current operating system&mdash;that is, `errno`
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.IntPtr</ReturnType>
@@ -10945,10 +10847,6 @@ The system error is based on the current operating system&mdash;that is, `errno`
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-1.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -11021,10 +10919,6 @@ The system error is based on the current operating system&mdash;that is, `errno`
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.IntPtr</ReturnType>
@@ -11093,10 +10987,6 @@ The system error is based on the current operating system&mdash;that is, `errno`
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -11175,10 +11065,6 @@ The system error is based on the current operating system&mdash;that is, `errno`
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.IntPtr</ReturnType>
diff --git a/xml/System.Runtime.InteropServices/MarshalAsAttribute.xml b/xml/System.Runtime.InteropServices/MarshalAsAttribute.xml
index 2aa2d4819e2..bc04c61d884 100644
--- a/xml/System.Runtime.InteropServices/MarshalAsAttribute.xml
+++ b/xml/System.Runtime.InteropServices/MarshalAsAttribute.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/MarshalDirectiveException.xml b/xml/System.Runtime.InteropServices/MarshalDirectiveException.xml
index 0152fe85937..8d607c16808 100644
--- a/xml/System.Runtime.InteropServices/MarshalDirectiveException.xml
+++ b/xml/System.Runtime.InteropServices/MarshalDirectiveException.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -250,10 +246,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/MemoryMarshal.xml b/xml/System.Runtime.InteropServices/MemoryMarshal.xml
index ebfbe116da9..29325828e1c 100644
--- a/xml/System.Runtime.InteropServices/MemoryMarshal.xml
+++ b/xml/System.Runtime.InteropServices/MemoryMarshal.xml
@@ -197,12 +197,6 @@
         <AssemblyName>System.Runtime</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Memory&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -536,12 +530,6 @@ This method is supported only on platforms that support misaligned memory access
         <AssemblyName>System.Runtime</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Memory&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -609,12 +597,6 @@ The array must already be pinned before this method is called, and that array mu
         <AssemblyName>System.Runtime</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlySpan&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -786,12 +768,6 @@ The returned span does not include the `null` terminator.
         <AssemblyName>System.Runtime</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Span&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -857,12 +833,6 @@ This method can be useful if part of a managed object represents a fixed array.
         <AssemblyName>System.Runtime</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Ref">
         <ReturnType>System.Byte</ReturnType>
       </ReturnValue>
@@ -911,12 +881,6 @@ The caller must manually reinterpret the returned <em>ref byte</em> as a ref to
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Ref">
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -978,12 +942,6 @@ This method does not perform array variance checks. The caller must manually per
         <AssemblyName>System.Runtime</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Ref">
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -1050,12 +1008,6 @@ If the read-only span is empty, this method returns a reference to the location
         <AssemblyName>System.Runtime</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue RefType="Ref">
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -1189,10 +1141,6 @@ If the span is empty, this method returns a reference to the location where the
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netstandard-2.0">
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IteratorStateMachine(typeof(System.Runtime.InteropServices.MemoryMarshal+&lt;ToEnumerable&gt;d__3&lt;&gt;))]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IteratorStateMachine(typeof(System.Runtime.InteropServices.MemoryMarshal+&lt;ToEnumerable&gt;d__3&lt;&gt;))&gt;]</AttributeName>
@@ -1264,12 +1212,6 @@ This method allows a read-only memory buffer to be used in existing APIs that re
         <AssemblyName>System.Runtime</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1341,12 +1283,6 @@ This method allows a read-only memory buffer to be used in existing APIs that re
         <AssemblyName>System.Runtime</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1421,12 +1357,6 @@ This method allows a read-only memory buffer to be used in existing APIs that re
         <AssemblyName>System.Runtime</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices/NFloat.xml b/xml/System.Runtime.InteropServices/NFloat.xml
index adda2d7805e..f0a569ddbd0 100644
--- a/xml/System.Runtime.InteropServices/NFloat.xml
+++ b/xml/System.Runtime.InteropServices/NFloat.xml
@@ -926,12 +926,6 @@ This computes `arctan(x) / π` in the interval `[-0.5, +0.5]`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1032,12 +1026,6 @@ This computes `arctan(x) / π` in the interval `[-0.5, +0.5]`.
         <AssemblyName>System.Runtime.InteropServices</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TInteger</ReturnType>
       </ReturnValue>
@@ -1081,12 +1069,6 @@ This computes `arctan(x) / π` in the interval `[-0.5, +0.5]`.
         <AssemblyName>System.Runtime.InteropServices</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TInteger</ReturnType>
       </ReturnValue>
@@ -1274,12 +1256,6 @@ This computes `cos(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.InteropServices.NFloat</ReturnType>
       </ReturnValue>
@@ -1325,12 +1301,6 @@ This computes `cos(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.InteropServices.NFloat</ReturnType>
       </ReturnValue>
@@ -1376,12 +1346,6 @@ This computes `cos(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.InteropServices.NFloat</ReturnType>
       </ReturnValue>
@@ -1545,12 +1509,6 @@ This computes `cos(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4752,12 +4710,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.InteropServices.NFloat</ReturnType>
       </ReturnValue>
@@ -4868,12 +4820,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.InteropServices.NFloat</ReturnType>
       </ReturnValue>
@@ -4916,12 +4862,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.InteropServices.NFloat</ReturnType>
       </ReturnValue>
@@ -5053,12 +4993,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.InteropServices.NFloat</ReturnType>
       </ReturnValue>
@@ -7066,12 +7000,6 @@ This computes `tan(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -7096,12 +7024,6 @@ This computes `tan(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -7136,12 +7058,6 @@ This computes `tan(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -7185,12 +7101,6 @@ This computes `tan(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -7420,12 +7330,6 @@ This computes `tan(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7542,12 +7446,6 @@ This computes `tan(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7676,12 +7574,6 @@ This computes `tan(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices/NativeLibrary.xml b/xml/System.Runtime.InteropServices/NativeLibrary.xml
index a3f724f7def..5af4c6b9cae 100644
--- a/xml/System.Runtime.InteropServices/NativeLibrary.xml
+++ b/xml/System.Runtime.InteropServices/NativeLibrary.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides APIs for managing native libraries.</summary>
diff --git a/xml/System.Runtime.InteropServices/OSPlatform.xml b/xml/System.Runtime.InteropServices/OSPlatform.xml
index df46f959891..d818a78a6f1 100644
--- a/xml/System.Runtime.InteropServices/OSPlatform.xml
+++ b/xml/System.Runtime.InteropServices/OSPlatform.xml
@@ -93,12 +93,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.InteropServices.OSPlatform</ReturnType>
       </ReturnValue>
@@ -175,12 +169,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -565,12 +553,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices/PosixSignalRegistration.xml b/xml/System.Runtime.InteropServices/PosixSignalRegistration.xml
index d39e1a9e528..06b9632619c 100644
--- a/xml/System.Runtime.InteropServices/PosixSignalRegistration.xml
+++ b/xml/System.Runtime.InteropServices/PosixSignalRegistration.xml
@@ -57,10 +57,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("tvos")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("tvos")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.InteropServices.PosixSignalRegistration</ReturnType>
diff --git a/xml/System.Runtime.InteropServices/ProgIdAttribute.xml b/xml/System.Runtime.InteropServices/ProgIdAttribute.xml
index 77c5b87d42b..e0623ac2a1d 100644
--- a/xml/System.Runtime.InteropServices/ProgIdAttribute.xml
+++ b/xml/System.Runtime.InteropServices/ProgIdAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/RuntimeEnvironment.xml b/xml/System.Runtime.InteropServices/RuntimeEnvironment.xml
index fc9afa15d23..88f0133e8c6 100644
--- a/xml/System.Runtime.InteropServices/RuntimeEnvironment.xml
+++ b/xml/System.Runtime.InteropServices/RuntimeEnvironment.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/RuntimeInformation.xml b/xml/System.Runtime.InteropServices/RuntimeInformation.xml
index 558ce859399..9c354281a1a 100644
--- a/xml/System.Runtime.InteropServices/RuntimeInformation.xml
+++ b/xml/System.Runtime.InteropServices/RuntimeInformation.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about the .NET runtime installation.</summary>
diff --git a/xml/System.Runtime.InteropServices/SEHException.xml b/xml/System.Runtime.InteropServices/SEHException.xml
index c23d458f797..b98f0512670 100644
--- a/xml/System.Runtime.InteropServices/SEHException.xml
+++ b/xml/System.Runtime.InteropServices/SEHException.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -290,10 +286,6 @@ catch(…)
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/SafeArrayRankMismatchException.xml b/xml/System.Runtime.InteropServices/SafeArrayRankMismatchException.xml
index 5b87deb7395..07d9f7ef972 100644
--- a/xml/System.Runtime.InteropServices/SafeArrayRankMismatchException.xml
+++ b/xml/System.Runtime.InteropServices/SafeArrayRankMismatchException.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -252,10 +248,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/SafeArrayTypeMismatchException.xml b/xml/System.Runtime.InteropServices/SafeArrayTypeMismatchException.xml
index 23d3517353d..e9263100425 100644
--- a/xml/System.Runtime.InteropServices/SafeArrayTypeMismatchException.xml
+++ b/xml/System.Runtime.InteropServices/SafeArrayTypeMismatchException.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -250,10 +246,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/SequenceMarshal.xml b/xml/System.Runtime.InteropServices/SequenceMarshal.xml
index e8efb366785..aca7e6669e1 100644
--- a/xml/System.Runtime.InteropServices/SequenceMarshal.xml
+++ b/xml/System.Runtime.InteropServices/SequenceMarshal.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a collection of methods for interoperating with <see cref="T:System.Buffers.ReadOnlySequence`1" />.</summary>
@@ -265,12 +261,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.InteropServices/TypeIdentifierAttribute.xml b/xml/System.Runtime.InteropServices/TypeIdentifierAttribute.xml
index f33891214b9..c88fb1809c1 100644
--- a/xml/System.Runtime.InteropServices/TypeIdentifierAttribute.xml
+++ b/xml/System.Runtime.InteropServices/TypeIdentifierAttribute.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/TypeLibImportClassAttribute.xml b/xml/System.Runtime.InteropServices/TypeLibImportClassAttribute.xml
index 0031ed19324..55babad2bad 100644
--- a/xml/System.Runtime.InteropServices/TypeLibImportClassAttribute.xml
+++ b/xml/System.Runtime.InteropServices/TypeLibImportClassAttribute.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/UCOMITypeLib.xml b/xml/System.Runtime.InteropServices/UCOMITypeLib.xml
index 9f0227a8629..9ac82f05ecd 100644
--- a/xml/System.Runtime.InteropServices/UCOMITypeLib.xml
+++ b/xml/System.Runtime.InteropServices/UCOMITypeLib.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Obsolete("Use System.Runtime.InteropServices.ComTypes.ITypeLib instead. http://go.microsoft.com/fwlink/?linkid=14202", false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("Use System.Runtime.InteropServices.ComTypes.ITypeLib instead. http://go.microsoft.com/fwlink/?linkid=14202", false)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Use <see cref="T:System.Runtime.InteropServices.ComTypes.ITypeLib" /> instead.</summary>
diff --git a/xml/System.Runtime.InteropServices/UnknownWrapper.xml b/xml/System.Runtime.InteropServices/UnknownWrapper.xml
index e2980296180..f4ec490f372 100644
--- a/xml/System.Runtime.InteropServices/UnknownWrapper.xml
+++ b/xml/System.Runtime.InteropServices/UnknownWrapper.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.InteropServices/VariantWrapper.xml b/xml/System.Runtime.InteropServices/VariantWrapper.xml
index 22681e62e8b..3d320d8dc5c 100644
--- a/xml/System.Runtime.InteropServices/VariantWrapper.xml
+++ b/xml/System.Runtime.InteropServices/VariantWrapper.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Intrinsics/Vector128.xml b/xml/System.Runtime.Intrinsics/Vector128.xml
index ef39f4145b2..bd2b50a319a 100644
--- a/xml/System.Runtime.Intrinsics/Vector128.xml
+++ b/xml/System.Runtime.Intrinsics/Vector128.xml
@@ -43,12 +43,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -99,12 +93,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -164,12 +152,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -237,12 +219,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1">System.Runtime.Intrinsics.Vector128&lt;U&gt;</ReturnType>
         <ReturnType FrameworkAlternate="net-7.0;net-8.0;net-9.0">System.Runtime.Intrinsics.Vector128&lt;TTo&gt;</ReturnType>
@@ -1075,12 +1051,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1224,12 +1194,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1423,12 +1387,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1488,12 +1446,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1602,12 +1554,6 @@
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1669,12 +1615,6 @@
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1743,12 +1683,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -2162,12 +2096,6 @@
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -2226,12 +2154,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2291,12 +2213,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2357,12 +2273,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3911,12 +3821,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -3961,12 +3865,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -4017,12 +3915,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -4072,12 +3964,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -4124,12 +4010,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -4189,12 +4069,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -4637,12 +4511,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -5081,12 +4949,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -5130,12 +4992,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -5239,12 +5095,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -5298,12 +5148,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -5362,12 +5206,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -5433,12 +5271,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -5498,12 +5330,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5564,12 +5390,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5687,10 +5507,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt32</ReturnType>
@@ -5862,12 +5678,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -5932,12 +5742,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -5992,12 +5796,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -6048,12 +5846,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -6113,12 +5905,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6179,12 +5965,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6245,12 +6025,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -6310,12 +6084,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6376,12 +6144,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6523,12 +6285,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6571,12 +6327,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6619,12 +6369,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6667,12 +6411,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6715,12 +6453,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6830,12 +6562,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -6895,12 +6621,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6961,12 +6681,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7027,12 +6741,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -7092,12 +6800,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7158,12 +6860,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7227,10 +6923,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
@@ -7285,10 +6977,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
@@ -7343,10 +7031,6 @@ On x86, this method corresponds to __m128i _mm_setr_epi8
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
@@ -7406,12 +7090,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -7473,10 +7151,6 @@ This method may bypass the cache on certain platforms.
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
@@ -7640,12 +7314,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -7698,12 +7366,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -7756,12 +7418,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -7814,12 +7470,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -7872,12 +7522,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -7937,12 +7581,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -7995,12 +7633,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -8053,12 +7685,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -8111,12 +7737,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -8169,12 +7789,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
         <Attributes>
@@ -8234,12 +7848,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -8299,12 +7907,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -8363,12 +7965,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -8714,12 +8310,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -8770,12 +8360,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -10207,12 +9791,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -10266,10 +9844,6 @@ This method may bypass the cache on certain platforms.
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -10332,10 +9906,6 @@ This method may bypass the cache on certain platforms.
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -10398,10 +9968,6 @@ This method may bypass the cache on certain platforms.
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -10469,12 +10035,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -10537,10 +10097,6 @@ This method may bypass the cache on certain platforms.
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -10601,12 +10157,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -10666,12 +10216,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -10732,12 +10276,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -10798,12 +10336,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -10858,12 +10390,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -10966,12 +10492,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -11703,12 +11223,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -11775,12 +11289,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -11844,12 +11352,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -11909,12 +11411,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.Intrinsics/Vector128`1.xml b/xml/System.Runtime.Intrinsics/Vector128`1.xml
index 0adc4d1ab20..d28e9797c89 100644
--- a/xml/System.Runtime.Intrinsics/Vector128`1.xml
+++ b/xml/System.Runtime.Intrinsics/Vector128`1.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of the elements in the vector.</typeparam>
@@ -142,12 +138,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.Intrinsics/Vector256.xml b/xml/System.Runtime.Intrinsics/Vector256.xml
index 96592d84ef3..83642be9ed6 100644
--- a/xml/System.Runtime.Intrinsics/Vector256.xml
+++ b/xml/System.Runtime.Intrinsics/Vector256.xml
@@ -43,12 +43,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -99,12 +93,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -164,12 +152,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -238,12 +220,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1">System.Runtime.Intrinsics.Vector256&lt;U&gt;</ReturnType>
         <ReturnType FrameworkAlternate="net-7.0;net-8.0;net-9.0">System.Runtime.Intrinsics.Vector256&lt;TTo&gt;</ReturnType>
@@ -1076,12 +1052,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1135,12 +1105,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1192,12 +1156,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1257,12 +1215,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1371,12 +1323,6 @@
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1438,12 +1384,6 @@
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1512,12 +1452,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1931,12 +1865,6 @@
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1996,12 +1924,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2061,12 +1983,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2127,12 +2043,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3829,12 +3739,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -3879,12 +3783,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -3928,12 +3826,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -3984,12 +3876,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -4039,12 +3925,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -4091,12 +3971,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -4156,12 +4030,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -4604,12 +4472,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -5048,12 +4910,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -5097,12 +4953,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -5206,12 +5056,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -5265,12 +5109,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -5329,12 +5167,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -5400,12 +5232,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -5465,12 +5291,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5531,12 +5351,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5654,10 +5468,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt32</ReturnType>
@@ -5829,12 +5639,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -5899,12 +5703,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -5959,12 +5757,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -6015,12 +5807,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -6080,12 +5866,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6146,12 +5926,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6212,12 +5986,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -6277,12 +6045,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6343,12 +6105,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6490,12 +6246,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6539,12 +6289,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6588,12 +6332,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6637,12 +6375,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6686,12 +6418,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6802,12 +6528,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -6867,12 +6587,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6933,12 +6647,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6999,12 +6707,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -7064,12 +6766,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7130,12 +6826,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7199,10 +6889,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
@@ -7257,10 +6943,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
@@ -7315,10 +6997,6 @@ On x86, this method corresponds to __m256i _mm256_setr_epi8
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
@@ -7378,12 +7056,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -7445,10 +7117,6 @@ This method may bypass the cache on certain platforms.
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
@@ -7612,12 +7280,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -7671,12 +7333,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -7729,12 +7385,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -7787,12 +7437,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -7845,12 +7489,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -7910,12 +7548,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -7969,12 +7601,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -8027,12 +7653,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -8085,12 +7705,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -8143,12 +7757,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
         <Attributes>
@@ -8208,12 +7816,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -8273,12 +7875,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -8337,12 +7933,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -8688,12 +8278,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -8744,12 +8328,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -10181,12 +9759,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -10240,10 +9812,6 @@ This method may bypass the cache on certain platforms.
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -10306,10 +9874,6 @@ This method may bypass the cache on certain platforms.
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -10372,10 +9936,6 @@ This method may bypass the cache on certain platforms.
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -10443,12 +10003,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -10511,10 +10065,6 @@ This method may bypass the cache on certain platforms.
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -10575,12 +10125,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -10640,12 +10184,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -10706,12 +10244,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -10762,12 +10294,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -10812,12 +10338,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -10920,12 +10440,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -11657,12 +11171,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -11729,12 +11237,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -11798,12 +11300,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -11863,12 +11359,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector256&lt;T&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.Intrinsics/Vector256`1.xml b/xml/System.Runtime.Intrinsics/Vector256`1.xml
index 29c99441aa1..c1fbdcbcc60 100644
--- a/xml/System.Runtime.Intrinsics/Vector256`1.xml
+++ b/xml/System.Runtime.Intrinsics/Vector256`1.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of the elements in the vector.</typeparam>
@@ -142,12 +138,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.Intrinsics/Vector512.xml b/xml/System.Runtime.Intrinsics/Vector512.xml
index 89fe97e743c..5b83ec2b5dd 100644
--- a/xml/System.Runtime.Intrinsics/Vector512.xml
+++ b/xml/System.Runtime.Intrinsics/Vector512.xml
@@ -32,12 +32,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -82,12 +76,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -141,12 +129,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -200,12 +182,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;TTo&gt;</ReturnType>
         <Attributes>
@@ -835,12 +811,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Numerics.Vector&lt;T&gt;</ReturnType>
         <Attributes>
@@ -886,12 +856,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -937,12 +901,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -996,12 +954,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1108,12 +1060,6 @@
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1175,12 +1121,6 @@
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1243,12 +1183,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1654,12 +1588,6 @@
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1713,12 +1641,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1766,12 +1688,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1821,12 +1737,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3432,12 +3342,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -3482,12 +3386,6 @@
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -3531,12 +3429,6 @@
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -3580,12 +3472,6 @@
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -3630,12 +3516,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -3680,12 +3560,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -3733,12 +3607,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -3792,12 +3660,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -4189,12 +4051,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -4581,12 +4437,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -4630,12 +4480,6 @@
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -4733,12 +4577,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -4792,12 +4630,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -4850,12 +4682,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -4910,12 +4736,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -4969,12 +4789,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5023,12 +4837,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5134,10 +4942,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt64</ReturnType>
@@ -5291,12 +5095,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
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@@ -5613,12 +5381,6 @@
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@@ -5672,12 +5434,6 @@
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@@ -5726,12 +5482,6 @@
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@@ -5858,12 +5608,6 @@
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@@ -5907,12 +5651,6 @@
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@@ -5956,12 +5694,6 @@
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@@ -6005,12 +5737,6 @@
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@@ -6054,12 +5780,6 @@
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@@ -6277,12 +5985,6 @@
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@@ -6331,12 +6033,6 @@
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@@ -6390,12 +6086,6 @@
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@@ -6444,12 +6134,6 @@
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@@ -6502,10 +6186,6 @@
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@@ -6555,10 +6235,6 @@
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@@ -6608,10 +6284,6 @@
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@@ -6940,12 +6596,6 @@
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@@ -6998,12 +6648,6 @@
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@@ -7056,12 +6700,6 @@
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@@ -7114,12 +6752,6 @@
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@@ -7232,12 +6858,6 @@
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@@ -7290,12 +6910,6 @@
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@@ -7348,12 +6962,6 @@
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@@ -7406,12 +7014,6 @@
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@@ -9368,12 +8940,6 @@
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@@ -9422,10 +8988,6 @@
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@@ -9477,10 +9039,6 @@
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@@ -9532,10 +9090,6 @@
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         <ReturnType>System.Void</ReturnType>
@@ -9583,12 +9137,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -9640,10 +9188,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -9693,12 +9237,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -9752,12 +9290,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -9803,12 +9335,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -9906,12 +9432,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -10620,12 +10140,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -10683,12 +10197,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -10742,12 +10250,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
@@ -10801,12 +10303,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector512&lt;T&gt;</ReturnType>
         <Attributes>
diff --git a/xml/System.Runtime.Intrinsics/Vector512`1.xml b/xml/System.Runtime.Intrinsics/Vector512`1.xml
index ba23d0415f4..a9de98a1fea 100644
--- a/xml/System.Runtime.Intrinsics/Vector512`1.xml
+++ b/xml/System.Runtime.Intrinsics/Vector512`1.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of the elements in the vector.</typeparam>
@@ -113,12 +109,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.Intrinsics/Vector64.xml b/xml/System.Runtime.Intrinsics/Vector64.xml
index 3f054cab584..a1f9f621f20 100644
--- a/xml/System.Runtime.Intrinsics/Vector64.xml
+++ b/xml/System.Runtime.Intrinsics/Vector64.xml
@@ -43,12 +43,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -99,12 +93,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -164,12 +152,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -238,12 +220,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1">System.Runtime.Intrinsics.Vector64&lt;U&gt;</ReturnType>
         <ReturnType FrameworkAlternate="net-7.0;net-8.0;net-9.0">System.Runtime.Intrinsics.Vector64&lt;TTo&gt;</ReturnType>
@@ -1074,12 +1050,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1139,12 +1109,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1253,12 +1217,6 @@
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1320,12 +1278,6 @@
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1394,12 +1346,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1813,12 +1759,6 @@
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -1878,12 +1818,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1943,12 +1877,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2009,12 +1937,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2900,12 +2822,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -2957,12 +2873,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -3011,12 +2921,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -3069,12 +2973,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -3511,12 +3409,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -3940,12 +3832,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -3989,12 +3875,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -4096,12 +3976,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -4155,12 +4029,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -4219,12 +4087,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -4290,12 +4152,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -4355,12 +4211,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4421,12 +4271,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4542,10 +4386,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt32</ReturnType>
@@ -4721,12 +4561,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -4787,12 +4621,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -4852,12 +4680,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4918,12 +4740,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4984,12 +4800,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -5049,12 +4859,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5115,12 +4919,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5260,12 +5058,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -5309,12 +5101,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -5358,12 +5144,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -5407,12 +5187,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -5456,12 +5230,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -5570,12 +5338,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -5635,12 +5397,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5701,12 +5457,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5767,12 +5517,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -5832,12 +5576,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5898,12 +5636,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5967,10 +5699,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
@@ -6025,10 +5753,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
@@ -6083,10 +5807,6 @@ On x86, this method corresponds to __m64 _mm_setr_pi8
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
@@ -6146,12 +5866,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -6213,10 +5927,6 @@ This method may bypass the cache on certain platforms.
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
@@ -6376,12 +6086,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -6435,12 +6139,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6493,12 +6191,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6551,12 +6243,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6609,12 +6295,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6674,12 +6354,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -6733,12 +6407,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6791,12 +6459,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6849,12 +6511,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6907,12 +6563,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyName>System.Runtime.Intrinsics</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
         <Attributes>
@@ -6972,12 +6622,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -7037,12 +6681,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -7101,12 +6739,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -7456,12 +7088,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -7512,12 +7138,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -8848,12 +8468,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -8907,10 +8521,6 @@ This method may bypass the cache on certain platforms.
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -8973,10 +8583,6 @@ This method may bypass the cache on certain platforms.
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -9039,10 +8645,6 @@ This method may bypass the cache on certain platforms.
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -9110,12 +8712,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -9178,10 +8774,6 @@ This method may bypass the cache on certain platforms.
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -9242,12 +8834,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -9307,12 +8893,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -9373,12 +8953,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -9439,12 +9013,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -9499,12 +9067,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector128&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -9607,12 +9169,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -10344,12 +9900,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -10412,12 +9962,6 @@ This method may bypass the cache on certain platforms.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Intrinsics.Vector64&lt;T&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.Intrinsics/Vector64`1.xml b/xml/System.Runtime.Intrinsics/Vector64`1.xml
index 475e332ac72..5f1bc6f992b 100644
--- a/xml/System.Runtime.Intrinsics/Vector64`1.xml
+++ b/xml/System.Runtime.Intrinsics/Vector64`1.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of the elements in the vector.</typeparam>
@@ -142,12 +138,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.Loader/AssemblyDependencyResolver.xml b/xml/System.Runtime.Loader/AssemblyDependencyResolver.xml
index 96f4fc13070..f6cb1e6171e 100644
--- a/xml/System.Runtime.Loader/AssemblyDependencyResolver.xml
+++ b/xml/System.Runtime.Loader/AssemblyDependencyResolver.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Allows a program to resolve assemblies and native libraries to paths based on the dependencies of a given assembly.</summary>
diff --git a/xml/System.Runtime.Loader/AssemblyLoadContext+ContextualReflectionScope.xml b/xml/System.Runtime.Loader/AssemblyLoadContext+ContextualReflectionScope.xml
index 23ee466bde5..9af0c802954 100644
--- a/xml/System.Runtime.Loader/AssemblyLoadContext+ContextualReflectionScope.xml
+++ b/xml/System.Runtime.Loader/AssemblyLoadContext+ContextualReflectionScope.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a return type used exclusively for <see cref="M:System.Runtime.Loader.AssemblyLoadContext.EnterContextualReflection" />. It is intended to be used as an <see cref="T:System.IDisposable" /> in a <see langword="using" /> block.</summary>
diff --git a/xml/System.Runtime.Loader/AssemblyLoadContext.xml b/xml/System.Runtime.Loader/AssemblyLoadContext.xml
index 8236c1bcfd8..d97769711ff 100644
--- a/xml/System.Runtime.Loader/AssemblyLoadContext.xml
+++ b/xml/System.Runtime.Loader/AssemblyLoadContext.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the runtime's concept of a scope for assembly loading.</summary>
@@ -140,12 +136,6 @@ This constructor is protected. It can only be called from the <xref:System.Runti
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-3.0;netcore-3.1" />
         <Parameter Name="isCollectible" Type="System.Boolean" Index="1" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-3.0;netcore-3.1" />
@@ -235,10 +225,6 @@ This constructor is protected. It can only be called from the <xref:System.Runti
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Loader.AssemblyLoadContext</ReturnType>
@@ -343,12 +329,6 @@ For more information, see [AssemblyLoadContext.CurrentContextualReflectionContex
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Loader.AssemblyLoadContext+ContextualReflectionScope</ReturnType>
       </ReturnValue>
@@ -987,10 +967,6 @@ The OS handle returned by this method can be used with methods of the <xref:Syst
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1167,12 +1143,6 @@ The profile optimization improves the startup performance of the load context on
         <AssemblyName>mscorlib</AssemblyName>
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.Remoting/ObjectHandle.xml b/xml/System.Runtime.Remoting/ObjectHandle.xml
index 4498f5bab22..b54dac8ba80 100644
--- a/xml/System.Runtime.Remoting/ObjectHandle.xml
+++ b/xml/System.Runtime.Remoting/ObjectHandle.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDual)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDual)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization.DataContracts/DataContract.xml b/xml/System.Runtime.Serialization.DataContracts/DataContract.xml
index 692810dd092..e1fa34d60d2 100644
--- a/xml/System.Runtime.Serialization.DataContracts/DataContract.xml
+++ b/xml/System.Runtime.Serialization.DataContracts/DataContract.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -57,10 +53,6 @@
           <AttributeName Language="C#">[get: System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Data Contract Serialization and Deserialization might require types that cannot be statically analyzed.")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Data Contract Serialization and Deserialization might require types that cannot be statically analyzed.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Serialization.DataContracts.DataContract</ReturnType>
@@ -90,10 +82,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -277,12 +265,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -469,10 +451,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlDictionaryString</ReturnType>
@@ -502,10 +480,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlDictionaryString</ReturnType>
diff --git a/xml/System.Runtime.Serialization.DataContracts/DataContractSet.xml b/xml/System.Runtime.Serialization.DataContracts/DataContractSet.xml
index 93a843d22ae..a83e25c9b7f 100644
--- a/xml/System.Runtime.Serialization.DataContracts/DataContractSet.xml
+++ b/xml/System.Runtime.Serialization.DataContracts/DataContractSet.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
@@ -77,12 +73,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="dataContractSurrogate" Type="System.Runtime.Serialization.ISerializationSurrogateProvider" />
         <Parameter Name="referencedTypes" Type="System.Collections.Generic.IEnumerable&lt;System.Type&gt;">
diff --git a/xml/System.Runtime.Serialization.DataContracts/DataMember.xml b/xml/System.Runtime.Serialization.DataContracts/DataMember.xml
index ff73f7428bc..34506d99b7b 100644
--- a/xml/System.Runtime.Serialization.DataContracts/DataMember.xml
+++ b/xml/System.Runtime.Serialization.DataContracts/DataMember.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Runtime.Serialization.DataContracts/XmlDataContract.xml b/xml/System.Runtime.Serialization.DataContracts/XmlDataContract.xml
index 5b65a5a6d59..1a978ba8cfc 100644
--- a/xml/System.Runtime.Serialization.DataContracts/XmlDataContract.xml
+++ b/xml/System.Runtime.Serialization.DataContracts/XmlDataContract.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Runtime.Serialization.Formatters.Binary/BinaryFormatter.xml b/xml/System.Runtime.Serialization.Formatters.Binary/BinaryFormatter.xml
index 5b2af593f91..7f63d342b37 100644
--- a/xml/System.Runtime.Serialization.Formatters.Binary/BinaryFormatter.xml
+++ b/xml/System.Runtime.Serialization.Formatters.Binary/BinaryFormatter.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -416,10 +412,6 @@ Initializes a new `BinaryFormatter` for serialization or deserialization of obje
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("BinaryFormatter serialization is not trim compatible because the type of objects being processed cannot be statically discovered.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("BinaryFormatter serialization is not trim compatible because the type of objects being processed cannot be statically discovered.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -695,10 +687,6 @@ For deserialization to succeed, the current position in the stream must be at th
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("BinaryFormatter serialization is not trim compatible because the type of objects being processed cannot be statically discovered.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("BinaryFormatter serialization is not trim compatible because the type of objects being processed cannot be statically discovered.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization.Json/DataContractJsonSerializer.xml b/xml/System.Runtime.Serialization.Json/DataContractJsonSerializer.xml
index 84bd7e33be4..82c825e230f 100644
--- a/xml/System.Runtime.Serialization.Json/DataContractJsonSerializer.xml
+++ b/xml/System.Runtime.Serialization.Json/DataContractJsonSerializer.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.CompilerServices.TypeForwardedFrom("System.ServiceModel.Web, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.TypeForwardedFrom("System.ServiceModel.Web, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35")&gt;]</AttributeName>
@@ -746,10 +742,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Serialization.DateTimeFormat</ReturnType>
@@ -825,12 +817,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Serialization.ISerializationSurrogateProvider</ReturnType>
       </ReturnValue>
@@ -1492,12 +1478,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.Serialization.Json/DataContractJsonSerializerSettings.xml b/xml/System.Runtime.Serialization.Json/DataContractJsonSerializerSettings.xml
index 778198341d1..51e42626b05 100644
--- a/xml/System.Runtime.Serialization.Json/DataContractJsonSerializerSettings.xml
+++ b/xml/System.Runtime.Serialization.Json/DataContractJsonSerializerSettings.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies <see cref="T:System.Runtime.Serialization.Json.DataContractJsonSerializer" /> settings.</summary>
diff --git a/xml/System.Runtime.Serialization.Json/IXmlJsonReaderInitializer.xml b/xml/System.Runtime.Serialization.Json/IXmlJsonReaderInitializer.xml
index 762ea334d68..a6c35db28ad 100644
--- a/xml/System.Runtime.Serialization.Json/IXmlJsonReaderInitializer.xml
+++ b/xml/System.Runtime.Serialization.Json/IXmlJsonReaderInitializer.xml
@@ -40,10 +40,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.CompilerServices.TypeForwardedFrom("System.ServiceModel.Web, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.TypeForwardedFrom("System.ServiceModel.Web, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35")&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization.Json/IXmlJsonWriterInitializer.xml b/xml/System.Runtime.Serialization.Json/IXmlJsonWriterInitializer.xml
index 4faa5463ea3..c3443170631 100644
--- a/xml/System.Runtime.Serialization.Json/IXmlJsonWriterInitializer.xml
+++ b/xml/System.Runtime.Serialization.Json/IXmlJsonWriterInitializer.xml
@@ -40,10 +40,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.CompilerServices.TypeForwardedFrom("System.ServiceModel.Web, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.TypeForwardedFrom("System.ServiceModel.Web, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35")&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization.Json/JsonReaderWriterFactory.xml b/xml/System.Runtime.Serialization.Json/JsonReaderWriterFactory.xml
index 930e9fe022a..e8a7e4485ea 100644
--- a/xml/System.Runtime.Serialization.Json/JsonReaderWriterFactory.xml
+++ b/xml/System.Runtime.Serialization.Json/JsonReaderWriterFactory.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.CompilerServices.TypeForwardedFrom("System.ServiceModel.Web, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.TypeForwardedFrom("System.ServiceModel.Web, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35")&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization/CollectionDataContractAttribute.xml b/xml/System.Runtime.Serialization/CollectionDataContractAttribute.xml
index 49704e1e683..fa8fe574788 100644
--- a/xml/System.Runtime.Serialization/CollectionDataContractAttribute.xml
+++ b/xml/System.Runtime.Serialization/CollectionDataContractAttribute.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>When applied to a collection type, enables custom specification of the collection item elements. This attribute can be applied only to types that are recognized by the <see cref="T:System.Runtime.Serialization.DataContractSerializer" /> as valid, serializable collections.</summary>
diff --git a/xml/System.Runtime.Serialization/ContractNamespaceAttribute.xml b/xml/System.Runtime.Serialization/ContractNamespaceAttribute.xml
index c040e70f116..09711f6ee85 100644
--- a/xml/System.Runtime.Serialization/ContractNamespaceAttribute.xml
+++ b/xml/System.Runtime.Serialization/ContractNamespaceAttribute.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the CLR namespace and XML namespace of the data contract.</summary>
@@ -161,14 +157,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Runtime.Serialization/DataContractAttribute.xml b/xml/System.Runtime.Serialization/DataContractAttribute.xml
index 525dd88fbd7..20db07b868e 100644
--- a/xml/System.Runtime.Serialization/DataContractAttribute.xml
+++ b/xml/System.Runtime.Serialization/DataContractAttribute.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that the type defines or implements a data contract and is serializable by a serializer, such as the <see cref="T:System.Runtime.Serialization.DataContractSerializer" />. To make their type serializable, type authors must define a data contract for their type.</summary>
diff --git a/xml/System.Runtime.Serialization/DataContractResolver.xml b/xml/System.Runtime.Serialization/DataContractResolver.xml
index 4303dffcfe1..c9b2d259e41 100644
--- a/xml/System.Runtime.Serialization/DataContractResolver.xml
+++ b/xml/System.Runtime.Serialization/DataContractResolver.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a mechanism for dynamically mapping types to and from <see langword="xsi:type" /> representations during serialization and deserialization.</summary>
diff --git a/xml/System.Runtime.Serialization/DataContractSerializer.xml b/xml/System.Runtime.Serialization/DataContractSerializer.xml
index 2997bc984b6..b0f8172c505 100644
--- a/xml/System.Runtime.Serialization/DataContractSerializer.xml
+++ b/xml/System.Runtime.Serialization/DataContractSerializer.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Serializes and deserializes an instance of a type into an XML stream or document using a supplied data contract. This class cannot be inherited.</summary>
@@ -838,10 +834,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Serialization.DataContractResolver</ReturnType>
@@ -1473,10 +1465,6 @@ OperationDescription operation = host.Description.Endpoints[0].Contract.Operatio
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Data Contract Serialization and Deserialization might require types that cannot be statically analyzed.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Data Contract Serialization and Deserialization might require types that cannot be statically analyzed.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1791,10 +1779,6 @@ OperationDescription operation = host.Description.Endpoints[0].Contract.Operatio
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Data Contract Serialization and Deserialization might require types that cannot be statically analyzed.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Data Contract Serialization and Deserialization might require types that cannot be statically analyzed.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Runtime.Serialization/DataContractSerializerExtensions.xml b/xml/System.Runtime.Serialization/DataContractSerializerExtensions.xml
index 7b55ebc2b89..8f5757ceea9 100644
--- a/xml/System.Runtime.Serialization/DataContractSerializerExtensions.xml
+++ b/xml/System.Runtime.Serialization/DataContractSerializerExtensions.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
       <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization/DataContractSerializerSettings.xml b/xml/System.Runtime.Serialization/DataContractSerializerSettings.xml
index 9c576c497c0..e14b83ee40a 100644
--- a/xml/System.Runtime.Serialization/DataContractSerializerSettings.xml
+++ b/xml/System.Runtime.Serialization/DataContractSerializerSettings.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies data contract serializer settings.</summary>
diff --git a/xml/System.Runtime.Serialization/DataMemberAttribute.xml b/xml/System.Runtime.Serialization/DataMemberAttribute.xml
index 782c5203df5..888093383a0 100644
--- a/xml/System.Runtime.Serialization/DataMemberAttribute.xml
+++ b/xml/System.Runtime.Serialization/DataMemberAttribute.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>When applied to the member of a type, specifies that the member is part of a data contract and is serializable by the <see cref="T:System.Runtime.Serialization.DataContractSerializer" />.</summary>
diff --git a/xml/System.Runtime.Serialization/DateTimeFormat.xml b/xml/System.Runtime.Serialization/DateTimeFormat.xml
index 80684a69612..86eb86fb000 100644
--- a/xml/System.Runtime.Serialization/DateTimeFormat.xml
+++ b/xml/System.Runtime.Serialization/DateTimeFormat.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies date-time format options.</summary>
diff --git a/xml/System.Runtime.Serialization/EnumMemberAttribute.xml b/xml/System.Runtime.Serialization/EnumMemberAttribute.xml
index 7d63c1e7b9a..79f22e6f310 100644
--- a/xml/System.Runtime.Serialization/EnumMemberAttribute.xml
+++ b/xml/System.Runtime.Serialization/EnumMemberAttribute.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that the field is an enumeration member and should be serialized.</summary>
diff --git a/xml/System.Runtime.Serialization/ExportOptions.xml b/xml/System.Runtime.Serialization/ExportOptions.xml
index ea4470e0c05..a3e7fb03b03 100644
--- a/xml/System.Runtime.Serialization/ExportOptions.xml
+++ b/xml/System.Runtime.Serialization/ExportOptions.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the options that can be set for an <see cref="T:System.Runtime.Serialization.XsdDataContractExporter" />.</summary>
@@ -192,10 +188,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.ObjectModel.Collection&lt;System.Type&gt;</ReturnType>
diff --git a/xml/System.Runtime.Serialization/Formatter.xml b/xml/System.Runtime.Serialization/Formatter.xml
index cb5b6dfdb7c..a9fa27e4b25 100644
--- a/xml/System.Runtime.Serialization/Formatter.xml
+++ b/xml/System.Runtime.Serialization/Formatter.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -220,14 +216,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Serialization.SerializationBinder</ReturnType>
@@ -405,12 +393,6 @@
         <AssemblyVersion>8.1.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -561,12 +543,6 @@
         <AssemblyVersion>8.1.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
@@ -696,14 +672,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Serialization.ISurrogateSelector</ReturnType>
diff --git a/xml/System.Runtime.Serialization/FormatterConverter.xml b/xml/System.Runtime.Serialization/FormatterConverter.xml
index e91419858c3..5b0dd639ac2 100644
--- a/xml/System.Runtime.Serialization/FormatterConverter.xml
+++ b/xml/System.Runtime.Serialization/FormatterConverter.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization/FormatterServices.xml b/xml/System.Runtime.Serialization/FormatterServices.xml
index 943fd7236d2..494144ff26b 100644
--- a/xml/System.Runtime.Serialization/FormatterServices.xml
+++ b/xml/System.Runtime.Serialization/FormatterServices.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization/IDeserializationCallback.xml b/xml/System.Runtime.Serialization/IDeserializationCallback.xml
index e44fd4aae96..1e93cf01034 100644
--- a/xml/System.Runtime.Serialization/IDeserializationCallback.xml
+++ b/xml/System.Runtime.Serialization/IDeserializationCallback.xml
@@ -51,10 +51,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization/IExtensibleDataObject.xml b/xml/System.Runtime.Serialization/IExtensibleDataObject.xml
index f8a195cdbb6..0ac2bf7d05b 100644
--- a/xml/System.Runtime.Serialization/IExtensibleDataObject.xml
+++ b/xml/System.Runtime.Serialization/IExtensibleDataObject.xml
@@ -36,12 +36,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Runtime.Serialization.Xml" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides a data structure to store extra data encountered by the <see cref="T:System.Runtime.Serialization.XmlObjectSerializer" /> during deserialization of a type marked with the <see cref="T:System.Runtime.Serialization.DataContractAttribute" /> attribute.</summary>
     <remarks>For more information about this API, see <see href="/dotnet/fundamentals/runtime-libraries/system-runtime-serialization-iextensibledataobject">Supplemental API remarks for IExtensibleDataObject</see>.</remarks>
diff --git a/xml/System.Runtime.Serialization/IFormatter.xml b/xml/System.Runtime.Serialization/IFormatter.xml
index 3297f33a484..a1a8fb191ac 100644
--- a/xml/System.Runtime.Serialization/IFormatter.xml
+++ b/xml/System.Runtime.Serialization/IFormatter.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Obsolete("BinaryFormatter serialization is obsolete and should not be used. See https://aka.ms/binaryformatter for more information.", DiagnosticId="SYSLIB0011", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("BinaryFormatter serialization is obsolete and should not be used. See https://aka.ms/binaryformatter for more information.", DiagnosticId="SYSLIB0011", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -220,10 +216,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("BinaryFormatter serialization is not trim compatible because the type of objects being processed cannot be statically discovered.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("BinaryFormatter serialization is not trim compatible because the type of objects being processed cannot be statically discovered.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -293,10 +285,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("BinaryFormatter serialization is not trim compatible because the type of objects being processed cannot be statically discovered.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("BinaryFormatter serialization is not trim compatible because the type of objects being processed cannot be statically discovered.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Runtime.Serialization/IFormatterConverter.xml b/xml/System.Runtime.Serialization/IFormatterConverter.xml
index 0eb34ee29b8..af6fba319c6 100644
--- a/xml/System.Runtime.Serialization/IFormatterConverter.xml
+++ b/xml/System.Runtime.Serialization/IFormatterConverter.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Obsolete("Formatter-based serialization is obsolete and should not be used.", DiagnosticId="SYSLIB0050", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("Formatter-based serialization is obsolete and should not be used.", DiagnosticId="SYSLIB0050", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization/IObjectReference.xml b/xml/System.Runtime.Serialization/IObjectReference.xml
index 67c17d72cf0..11c26584716 100644
--- a/xml/System.Runtime.Serialization/IObjectReference.xml
+++ b/xml/System.Runtime.Serialization/IObjectReference.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Obsolete("Formatter-based serialization is obsolete and should not be used.", DiagnosticId="SYSLIB0050", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("Formatter-based serialization is obsolete and should not be used.", DiagnosticId="SYSLIB0050", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization/ISafeSerializationData.xml b/xml/System.Runtime.Serialization/ISafeSerializationData.xml
index 1b9972dc449..79cecd423bd 100644
--- a/xml/System.Runtime.Serialization/ISafeSerializationData.xml
+++ b/xml/System.Runtime.Serialization/ISafeSerializationData.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Obsolete("Formatter-based serialization is obsolete and should not be used.", DiagnosticId="SYSLIB0050", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("Formatter-based serialization is obsolete and should not be used.", DiagnosticId="SYSLIB0050", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Enables serialization of custom exception data in security-transparent code.</summary>
diff --git a/xml/System.Runtime.Serialization/ISerializable.xml b/xml/System.Runtime.Serialization/ISerializable.xml
index ffcbeed68d5..5de25f1e9b5 100644
--- a/xml/System.Runtime.Serialization/ISerializable.xml
+++ b/xml/System.Runtime.Serialization/ISerializable.xml
@@ -51,10 +51,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization/ISerializationCodeDomSurrogateProvider.xml b/xml/System.Runtime.Serialization/ISerializationCodeDomSurrogateProvider.xml
index b51b720e2a7..b164264ce49 100644
--- a/xml/System.Runtime.Serialization/ISerializationCodeDomSurrogateProvider.xml
+++ b/xml/System.Runtime.Serialization/ISerializationCodeDomSurrogateProvider.xml
@@ -11,12 +11,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>
             Represents a DataContract surrogate provider that is capable of modifying generated type code using <see cref="N:System.CodeDom" />.
diff --git a/xml/System.Runtime.Serialization/ISerializationSurrogate.xml b/xml/System.Runtime.Serialization/ISerializationSurrogate.xml
index abf4c1d5583..eb261662b0e 100644
--- a/xml/System.Runtime.Serialization/ISerializationSurrogate.xml
+++ b/xml/System.Runtime.Serialization/ISerializationSurrogate.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Obsolete("Formatter-based serialization is obsolete and should not be used.", DiagnosticId="SYSLIB0050", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("Formatter-based serialization is obsolete and should not be used.", DiagnosticId="SYSLIB0050", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization/ISerializationSurrogateProvider.xml b/xml/System.Runtime.Serialization/ISerializationSurrogateProvider.xml
index 5b1127f09e8..b0d071da7b8 100644
--- a/xml/System.Runtime.Serialization/ISerializationSurrogateProvider.xml
+++ b/xml/System.Runtime.Serialization/ISerializationSurrogateProvider.xml
@@ -37,10 +37,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netstandard-2.0">
       <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization/ISerializationSurrogateProvider2.xml b/xml/System.Runtime.Serialization/ISerializationSurrogateProvider2.xml
index adf25fca79b..764554bb417 100644
--- a/xml/System.Runtime.Serialization/ISerializationSurrogateProvider2.xml
+++ b/xml/System.Runtime.Serialization/ISerializationSurrogateProvider2.xml
@@ -17,12 +17,6 @@
       <InterfaceName>System.Runtime.Serialization.ISerializationSurrogateProvider</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides the methods needed to substitute one type for another by DataContractSerializer during export and import of XML schema documents (XSD). This interface builds upon <see cref="T:System.Runtime.Serialization.ISerializationSurrogateProvider" />.</summary>
     <remarks>Together with <c>ISerializationCodeDomSurrogateProvider</c>, these interfaces replace the <c>IDataContractSurrogate</c> interface from .NET Framework 4.8.</remarks>
diff --git a/xml/System.Runtime.Serialization/ISurrogateSelector.xml b/xml/System.Runtime.Serialization/ISurrogateSelector.xml
index c1f6dd4774c..f50bc686673 100644
--- a/xml/System.Runtime.Serialization/ISurrogateSelector.xml
+++ b/xml/System.Runtime.Serialization/ISurrogateSelector.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Obsolete("Formatter-based serialization is obsolete and should not be used.", DiagnosticId="SYSLIB0050", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("Formatter-based serialization is obsolete and should not be used.", DiagnosticId="SYSLIB0050", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -149,10 +145,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization/ImportOptions.xml b/xml/System.Runtime.Serialization/ImportOptions.xml
index d9677417796..c4ca1712bbe 100644
--- a/xml/System.Runtime.Serialization/ImportOptions.xml
+++ b/xml/System.Runtime.Serialization/ImportOptions.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -90,14 +86,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.CodeDom.Compiler.CodeDomProvider</ReturnType>
@@ -145,14 +133,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType FrameworkAlternate="net-7.0;net-8.0;net-9.0">System.Runtime.Serialization.ISerializationSurrogateProvider</ReturnType>
diff --git a/xml/System.Runtime.Serialization/InvalidDataContractException.xml b/xml/System.Runtime.Serialization/InvalidDataContractException.xml
index e163c3e1153..d276191f422 100644
--- a/xml/System.Runtime.Serialization/InvalidDataContractException.xml
+++ b/xml/System.Runtime.Serialization/InvalidDataContractException.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -228,10 +224,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
diff --git a/xml/System.Runtime.Serialization/KnownTypeAttribute.xml b/xml/System.Runtime.Serialization/KnownTypeAttribute.xml
index 786d8af6e52..314736a9f80 100644
--- a/xml/System.Runtime.Serialization/KnownTypeAttribute.xml
+++ b/xml/System.Runtime.Serialization/KnownTypeAttribute.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies types that should be recognized by the <see cref="T:System.Runtime.Serialization.DataContractSerializer" /> when serializing or deserializing a given type.</summary>
@@ -126,12 +122,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="methodName" Type="System.String" />
       </Parameters>
@@ -188,12 +178,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="type" Type="System.Type" />
       </Parameters>
diff --git a/xml/System.Runtime.Serialization/ObjectIDGenerator.xml b/xml/System.Runtime.Serialization/ObjectIDGenerator.xml
index 171de4ca283..c03a1af76f9 100644
--- a/xml/System.Runtime.Serialization/ObjectIDGenerator.xml
+++ b/xml/System.Runtime.Serialization/ObjectIDGenerator.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization/ObjectManager.xml b/xml/System.Runtime.Serialization/ObjectManager.xml
index 33e0570ce29..c7b5cb85ea4 100644
--- a/xml/System.Runtime.Serialization/ObjectManager.xml
+++ b/xml/System.Runtime.Serialization/ObjectManager.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -114,10 +110,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -231,12 +223,6 @@
         <AssemblyVersion>8.1.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -785,10 +771,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("ObjectManager is not trim compatible because the type of objects being managed cannot be statically discovered.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("ObjectManager is not trim compatible because the type of objects being managed cannot be statically discovered.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -875,10 +857,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("ObjectManager is not trim compatible because the type of objects being managed cannot be statically discovered.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("ObjectManager is not trim compatible because the type of objects being managed cannot be statically discovered.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization/SafeSerializationEventArgs.xml b/xml/System.Runtime.Serialization/SafeSerializationEventArgs.xml
index e3459c690d3..060f851817d 100644
--- a/xml/System.Runtime.Serialization/SafeSerializationEventArgs.xml
+++ b/xml/System.Runtime.Serialization/SafeSerializationEventArgs.xml
@@ -86,12 +86,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.Serialization/SerializationBinder.xml b/xml/System.Runtime.Serialization/SerializationBinder.xml
index 15150ba0455..0f73832b66d 100644
--- a/xml/System.Runtime.Serialization/SerializationBinder.xml
+++ b/xml/System.Runtime.Serialization/SerializationBinder.xml
@@ -128,12 +128,6 @@
         <AssemblyVersion>8.1.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -190,12 +184,6 @@
         <AssemblyVersion>8.1.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.Serialization/SerializationEntry.xml b/xml/System.Runtime.Serialization/SerializationEntry.xml
index 4c76c28f6e8..ccf7499f20c 100644
--- a/xml/System.Runtime.Serialization/SerializationEntry.xml
+++ b/xml/System.Runtime.Serialization/SerializationEntry.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -215,10 +211,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Runtime.Serialization/SerializationException.xml b/xml/System.Runtime.Serialization/SerializationException.xml
index 3c18884f3c2..4bceedee466 100644
--- a/xml/System.Runtime.Serialization/SerializationException.xml
+++ b/xml/System.Runtime.Serialization/SerializationException.xml
@@ -65,10 +65,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -259,10 +255,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization/SerializationInfo.xml b/xml/System.Runtime.Serialization/SerializationInfo.xml
index 3355d09c4be..fd39c5607b3 100644
--- a/xml/System.Runtime.Serialization/SerializationInfo.xml
+++ b/xml/System.Runtime.Serialization/SerializationInfo.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization/SerializationInfoEnumerator.xml b/xml/System.Runtime.Serialization/SerializationInfoEnumerator.xml
index 0d3d5e76287..e0808080dfa 100644
--- a/xml/System.Runtime.Serialization/SerializationInfoEnumerator.xml
+++ b/xml/System.Runtime.Serialization/SerializationInfoEnumerator.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -442,10 +438,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Runtime.Serialization/SerializationObjectManager.xml b/xml/System.Runtime.Serialization/SerializationObjectManager.xml
index f65beee95fe..9adf9d13cd4 100644
--- a/xml/System.Runtime.Serialization/SerializationObjectManager.xml
+++ b/xml/System.Runtime.Serialization/SerializationObjectManager.xml
@@ -185,10 +185,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("SerializationObjectManager is not trim compatible because the type of objects being managed cannot be statically discovered.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("SerializationObjectManager is not trim compatible because the type of objects being managed cannot be statically discovered.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization/StreamingContext.xml b/xml/System.Runtime.Serialization/StreamingContext.xml
index a04a937ec42..bfd25021ba1 100644
--- a/xml/System.Runtime.Serialization/StreamingContext.xml
+++ b/xml/System.Runtime.Serialization/StreamingContext.xml
@@ -64,10 +64,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization/SurrogateSelector.xml b/xml/System.Runtime.Serialization/SurrogateSelector.xml
index 99d10416473..d8be9318fbf 100644
--- a/xml/System.Runtime.Serialization/SurrogateSelector.xml
+++ b/xml/System.Runtime.Serialization/SurrogateSelector.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -261,10 +257,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Runtime.Serialization/XPathQueryGenerator.xml b/xml/System.Runtime.Serialization/XPathQueryGenerator.xml
index 3e3fbdba6f8..e8f960ed68a 100644
--- a/xml/System.Runtime.Serialization/XPathQueryGenerator.xml
+++ b/xml/System.Runtime.Serialization/XPathQueryGenerator.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>When given a class representing a data contract, and metadata representing a member of the contract, produces an XPath query for the member.</summary>
diff --git a/xml/System.Runtime.Serialization/XmlObjectSerializer.xml b/xml/System.Runtime.Serialization/XmlObjectSerializer.xml
index 4fb93fbe040..6b3d685e558 100644
--- a/xml/System.Runtime.Serialization/XmlObjectSerializer.xml
+++ b/xml/System.Runtime.Serialization/XmlObjectSerializer.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the base class used to serialize objects as XML streams or documents. This class is abstract.</summary>
diff --git a/xml/System.Runtime.Serialization/XmlSerializableServices.xml b/xml/System.Runtime.Serialization/XmlSerializableServices.xml
index 3154c324294..913087edbeb 100644
--- a/xml/System.Runtime.Serialization/XmlSerializableServices.xml
+++ b/xml/System.Runtime.Serialization/XmlSerializableServices.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains methods for reading and writing XML.</summary>
diff --git a/xml/System.Runtime.Serialization/XsdDataContractExporter.xml b/xml/System.Runtime.Serialization/XsdDataContractExporter.xml
index 96f11e2a788..22d7bb42f0c 100644
--- a/xml/System.Runtime.Serialization/XsdDataContractExporter.xml
+++ b/xml/System.Runtime.Serialization/XsdDataContractExporter.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Allows the transformation of a set of .NET types that are used in data contracts into an XML schema file (.xsd).</summary>
@@ -141,12 +137,6 @@ The following example creates an instance of the <xref:System.Runtime.Serializat
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="schemas" Type="System.Xml.Schema.XmlSchemaSet" />
       </Parameters>
@@ -748,14 +738,6 @@ The following example creates an instance of the <xref:System.Runtime.Serializat
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Serialization.ExportOptions</ReturnType>
diff --git a/xml/System.Runtime.Serialization/XsdDataContractImporter.xml b/xml/System.Runtime.Serialization/XsdDataContractImporter.xml
index 0317ffa3346..beaf6c2a3f3 100644
--- a/xml/System.Runtime.Serialization/XsdDataContractImporter.xml
+++ b/xml/System.Runtime.Serialization/XsdDataContractImporter.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
@@ -746,14 +742,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Serialization.ImportOptions</ReturnType>
diff --git a/xml/System.Runtime.Versioning/FrameworkName.xml b/xml/System.Runtime.Versioning/FrameworkName.xml
index bad96b386ac..22e0eb4dd26 100644
--- a/xml/System.Runtime.Versioning/FrameworkName.xml
+++ b/xml/System.Runtime.Versioning/FrameworkName.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -363,12 +359,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -435,12 +425,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -666,12 +650,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -740,12 +718,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Runtime.Versioning/OSPlatformAttribute.xml b/xml/System.Runtime.Versioning/OSPlatformAttribute.xml
index a5c0bb384b3..416ad38dc4e 100644
--- a/xml/System.Runtime.Versioning/OSPlatformAttribute.xml
+++ b/xml/System.Runtime.Versioning/OSPlatformAttribute.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Base type for all platform-specific API attributes.</summary>
diff --git a/xml/System.Runtime.Versioning/ObsoletedOSPlatformAttribute.xml b/xml/System.Runtime.Versioning/ObsoletedOSPlatformAttribute.xml
index bc6f8d5d777..001ad813c57 100644
--- a/xml/System.Runtime.Versioning/ObsoletedOSPlatformAttribute.xml
+++ b/xml/System.Runtime.Versioning/ObsoletedOSPlatformAttribute.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Marks APIs that were obsoleted in a given operating system version.</summary>
@@ -48,12 +44,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="platformName" Type="System.String" />
       </Parameters>
@@ -77,12 +67,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="platformName" Type="System.String" />
         <Parameter Name="message" Type="System.String">
diff --git a/xml/System.Runtime.Versioning/RequiresPreviewFeaturesAttribute.xml b/xml/System.Runtime.Versioning/RequiresPreviewFeaturesAttribute.xml
index ceaa45ad40f..cfda3122c3e 100644
--- a/xml/System.Runtime.Versioning/RequiresPreviewFeaturesAttribute.xml
+++ b/xml/System.Runtime.Versioning/RequiresPreviewFeaturesAttribute.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates that an API is in preview. This attribute allows call sites to be flagged with a diagnostic that indicates that a preview feature is used. Authors can use this attribute to ship preview features in their assemblies.</summary>
diff --git a/xml/System.Runtime.Versioning/SupportedOSPlatformAttribute.xml b/xml/System.Runtime.Versioning/SupportedOSPlatformAttribute.xml
index 994177ca2bb..b9b8c80c77a 100644
--- a/xml/System.Runtime.Versioning/SupportedOSPlatformAttribute.xml
+++ b/xml/System.Runtime.Versioning/SupportedOSPlatformAttribute.xml
@@ -57,12 +57,6 @@ Callers can apply a <xref:System.Runtime.Versioning.SupportedOSPlatformAttribute
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="platformName" Type="System.String" />
       </Parameters>
diff --git a/xml/System.Runtime.Versioning/SupportedOSPlatformGuardAttribute.xml b/xml/System.Runtime.Versioning/SupportedOSPlatformGuardAttribute.xml
index 7049856503f..b467b546282 100644
--- a/xml/System.Runtime.Versioning/SupportedOSPlatformGuardAttribute.xml
+++ b/xml/System.Runtime.Versioning/SupportedOSPlatformGuardAttribute.xml
@@ -54,12 +54,6 @@ Callers can apply a <xref:System.Runtime.Versioning.SupportedOSPlatformGuardAttr
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="platformName" Type="System.String" />
       </Parameters>
diff --git a/xml/System.Runtime.Versioning/TargetFrameworkAttribute.xml b/xml/System.Runtime.Versioning/TargetFrameworkAttribute.xml
index 821fc877024..b0c79a6df7a 100644
--- a/xml/System.Runtime.Versioning/TargetFrameworkAttribute.xml
+++ b/xml/System.Runtime.Versioning/TargetFrameworkAttribute.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Identifies the version of .NET that a particular assembly was compiled against.</summary>
@@ -168,14 +164,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Runtime.Versioning/TargetPlatformAttribute.xml b/xml/System.Runtime.Versioning/TargetPlatformAttribute.xml
index 3502f9419b1..e145eacdab2 100644
--- a/xml/System.Runtime.Versioning/TargetPlatformAttribute.xml
+++ b/xml/System.Runtime.Versioning/TargetPlatformAttribute.xml
@@ -44,12 +44,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="platformName" Type="System.String" />
       </Parameters>
diff --git a/xml/System.Runtime.Versioning/UnsupportedOSPlatformAttribute.xml b/xml/System.Runtime.Versioning/UnsupportedOSPlatformAttribute.xml
index 1a872438665..764068a7738 100644
--- a/xml/System.Runtime.Versioning/UnsupportedOSPlatformAttribute.xml
+++ b/xml/System.Runtime.Versioning/UnsupportedOSPlatformAttribute.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Marks APIs that were removed or are unsupported in a given operating system version.</summary>
@@ -124,10 +120,6 @@ The versionless attribute is primarily used to indicate the API is unsupported f
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Runtime.Versioning/UnsupportedOSPlatformGuardAttribute.xml b/xml/System.Runtime.Versioning/UnsupportedOSPlatformGuardAttribute.xml
index 9b1b23f9310..4a79a1d4d71 100644
--- a/xml/System.Runtime.Versioning/UnsupportedOSPlatformGuardAttribute.xml
+++ b/xml/System.Runtime.Versioning/UnsupportedOSPlatformGuardAttribute.xml
@@ -54,12 +54,6 @@ Callers can apply a <xref:System.Runtime.Versioning.UnsupportedOSPlatformGuardAt
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="platformName" Type="System.String" />
       </Parameters>
diff --git a/xml/System.Runtime.Versioning/VersioningHelper.xml b/xml/System.Runtime.Versioning/VersioningHelper.xml
index 632733db824..1c6ba9a8226 100644
--- a/xml/System.Runtime.Versioning/VersioningHelper.xml
+++ b/xml/System.Runtime.Versioning/VersioningHelper.xml
@@ -103,12 +103,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -176,10 +170,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Runtime/AmbiguousImplementationException.xml b/xml/System.Runtime/AmbiguousImplementationException.xml
index 7309179ecce..baa95867931 100644
--- a/xml/System.Runtime/AmbiguousImplementationException.xml
+++ b/xml/System.Runtime/AmbiguousImplementationException.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The exception that is thrown when there are multiple incompatible interface methods overriding another method.</summary>
diff --git a/xml/System.Runtime/AssemblyTargetedPatchBandAttribute.xml b/xml/System.Runtime/AssemblyTargetedPatchBandAttribute.xml
index e2a3d470552..40bbb0c10e2 100644
--- a/xml/System.Runtime/AssemblyTargetedPatchBandAttribute.xml
+++ b/xml/System.Runtime/AssemblyTargetedPatchBandAttribute.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies patch band information for targeted patching of .NET.</summary>
diff --git a/xml/System.Runtime/ControlledExecution.xml b/xml/System.Runtime/ControlledExecution.xml
index 817d5086802..2d5ef0d0c0b 100644
--- a/xml/System.Runtime/ControlledExecution.xml
+++ b/xml/System.Runtime/ControlledExecution.xml
@@ -39,10 +39,6 @@
           <AttributeName Language="C#">[System.Obsolete("ControlledExecution.Run method may corrupt the process and should not be used in production code.", DiagnosticId="SYSLIB0046", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("ControlledExecution.Run method may corrupt the process and should not be used in production code.", DiagnosticId="SYSLIB0046", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Runtime/DependentHandle.xml b/xml/System.Runtime/DependentHandle.xml
index e8c3333c800..180e2a70a92 100644
--- a/xml/System.Runtime/DependentHandle.xml
+++ b/xml/System.Runtime/DependentHandle.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a dependent garbage-collection handle. The handle will conditionally keep a dependent object instance alive as long as a target object instance is alive as well, without representing a strong reference to the target instance.</summary>
diff --git a/xml/System.Runtime/ProfileOptimization.xml b/xml/System.Runtime/ProfileOptimization.xml
index 188d1e72603..93e1d49ce88 100644
--- a/xml/System.Runtime/ProfileOptimization.xml
+++ b/xml/System.Runtime/ProfileOptimization.xml
@@ -83,10 +83,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -142,10 +138,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Runtime/TargetedPatchingOptOutAttribute.xml b/xml/System.Runtime/TargetedPatchingOptOutAttribute.xml
index ea1a3be42d6..19d965cde26 100644
--- a/xml/System.Runtime/TargetedPatchingOptOutAttribute.xml
+++ b/xml/System.Runtime/TargetedPatchingOptOutAttribute.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-2.0">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Method, AllowMultiple=false, Inherited=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Method, AllowMultiple=false, Inherited=false)&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/AccessRule.xml b/xml/System.Security.AccessControl/AccessRule.xml
index a368868784e..2ff306e2469 100644
--- a/xml/System.Security.AccessControl/AccessRule.xml
+++ b/xml/System.Security.AccessControl/AccessRule.xml
@@ -54,12 +54,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="identity" Type="System.Security.Principal.IdentityReference" />
         <Parameter Name="accessMask" Type="System.Int32" />
diff --git a/xml/System.Security.AccessControl/AceEnumerator.xml b/xml/System.Security.AccessControl/AceEnumerator.xml
index 42e4e0a5af5..df28ed82b0a 100644
--- a/xml/System.Security.AccessControl/AceEnumerator.xml
+++ b/xml/System.Security.AccessControl/AceEnumerator.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the ability to iterate through the access control entries (ACEs) in an access control list (ACL).</summary>
diff --git a/xml/System.Security.AccessControl/AuditRule.xml b/xml/System.Security.AccessControl/AuditRule.xml
index e78a951847a..d19cc32ee06 100644
--- a/xml/System.Security.AccessControl/AuditRule.xml
+++ b/xml/System.Security.AccessControl/AuditRule.xml
@@ -54,12 +54,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="identity" Type="System.Security.Principal.IdentityReference" />
         <Parameter Name="accessMask" Type="System.Int32" />
diff --git a/xml/System.Security.AccessControl/AuthorizationRule.xml b/xml/System.Security.AccessControl/AuthorizationRule.xml
index dbbd4e0fdb1..4b24aa644b3 100644
--- a/xml/System.Security.AccessControl/AuthorizationRule.xml
+++ b/xml/System.Security.AccessControl/AuthorizationRule.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Determines access to securable objects. The derived classes <see cref="T:System.Security.AccessControl.AccessRule" /> and <see cref="T:System.Security.AccessControl.AuditRule" /> offer specializations for access and audit functionality.</summary>
diff --git a/xml/System.Security.AccessControl/AuthorizationRuleCollection.xml b/xml/System.Security.AccessControl/AuthorizationRuleCollection.xml
index 43399e28365..943d0dd1982 100644
--- a/xml/System.Security.AccessControl/AuthorizationRuleCollection.xml
+++ b/xml/System.Security.AccessControl/AuthorizationRuleCollection.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Security.AccessControl.AuthorizationRule" /> objects.</summary>
@@ -141,12 +137,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.AccessControl/CommonAce.xml b/xml/System.Security.AccessControl/CommonAce.xml
index d0e5995ba21..6d8da8b87d2 100644
--- a/xml/System.Security.AccessControl/CommonAce.xml
+++ b/xml/System.Security.AccessControl/CommonAce.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an access control entry (ACE).</summary>
diff --git a/xml/System.Security.AccessControl/CommonAcl.xml b/xml/System.Security.AccessControl/CommonAcl.xml
index 82947909b0e..5cae2828672 100644
--- a/xml/System.Security.AccessControl/CommonAcl.xml
+++ b/xml/System.Security.AccessControl/CommonAcl.xml
@@ -31,10 +31,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an access control list (ACL) and is the base class for the <see cref="T:System.Security.AccessControl.DiscretionaryAcl" /> and <see cref="T:System.Security.AccessControl.SystemAcl" /> classes.</summary>
diff --git a/xml/System.Security.AccessControl/CommonObjectSecurity.xml b/xml/System.Security.AccessControl/CommonObjectSecurity.xml
index 5c29e31bed8..5b5e9327d0f 100644
--- a/xml/System.Security.AccessControl/CommonObjectSecurity.xml
+++ b/xml/System.Security.AccessControl/CommonObjectSecurity.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Controls access to objects without direct manipulation of access control lists (ACLs). This class is the abstract base class for the <see cref="T:System.Security.AccessControl.NativeObjectSecurity" /> class.</summary>
diff --git a/xml/System.Security.AccessControl/CommonSecurityDescriptor.xml b/xml/System.Security.AccessControl/CommonSecurityDescriptor.xml
index db9babb8e48..66113dc37f4 100644
--- a/xml/System.Security.AccessControl/CommonSecurityDescriptor.xml
+++ b/xml/System.Security.AccessControl/CommonSecurityDescriptor.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a security descriptor. A security descriptor includes an owner, a primary group, a Discretionary Access Control List (DACL), and a System Access Control List (SACL).</summary>
@@ -73,12 +69,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="isContainer" Type="System.Boolean" />
         <Parameter Name="isDS" Type="System.Boolean" />
@@ -128,10 +118,6 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -185,12 +171,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="isContainer" Type="System.Boolean" />
         <Parameter Name="isDS" Type="System.Boolean" />
@@ -666,12 +646,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -715,12 +689,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.AccessControl/CompoundAce.xml b/xml/System.Security.AccessControl/CompoundAce.xml
index 4c323037835..eb64d69cdb7 100644
--- a/xml/System.Security.AccessControl/CompoundAce.xml
+++ b/xml/System.Security.AccessControl/CompoundAce.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a compound Access Control Entry (ACE).</summary>
diff --git a/xml/System.Security.AccessControl/CustomAce.xml b/xml/System.Security.AccessControl/CustomAce.xml
index 72306a187c2..cce2e0a6f1e 100644
--- a/xml/System.Security.AccessControl/CustomAce.xml
+++ b/xml/System.Security.AccessControl/CustomAce.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an Access Control Entry (ACE) that is not defined by one of the members of the <see cref="T:System.Security.AccessControl.AceType" /> enumeration.</summary>
@@ -150,12 +146,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.AccessControl/DirectoryObjectSecurity.xml b/xml/System.Security.AccessControl/DirectoryObjectSecurity.xml
index 8a7ccd5b68c..204e288d148 100644
--- a/xml/System.Security.AccessControl/DirectoryObjectSecurity.xml
+++ b/xml/System.Security.AccessControl/DirectoryObjectSecurity.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/DirectorySecurity.xml b/xml/System.Security.AccessControl/DirectorySecurity.xml
index d1accf748b6..e4d6f82a1e0 100644
--- a/xml/System.Security.AccessControl/DirectorySecurity.xml
+++ b/xml/System.Security.AccessControl/DirectorySecurity.xml
@@ -146,10 +146,6 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/DiscretionaryAcl.xml b/xml/System.Security.AccessControl/DiscretionaryAcl.xml
index 4703cbe0d2e..c7976f13d05 100644
--- a/xml/System.Security.AccessControl/DiscretionaryAcl.xml
+++ b/xml/System.Security.AccessControl/DiscretionaryAcl.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Discretionary Access Control List (DACL).</summary>
@@ -113,12 +109,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="isContainer" Type="System.Boolean" />
         <Parameter Name="isDS" Type="System.Boolean" />
diff --git a/xml/System.Security.AccessControl/EventWaitHandleAccessRule.xml b/xml/System.Security.AccessControl/EventWaitHandleAccessRule.xml
index 806d9626abb..56277236319 100644
--- a/xml/System.Security.AccessControl/EventWaitHandleAccessRule.xml
+++ b/xml/System.Security.AccessControl/EventWaitHandleAccessRule.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/EventWaitHandleAuditRule.xml b/xml/System.Security.AccessControl/EventWaitHandleAuditRule.xml
index a75ba87b031..d005be89a1d 100644
--- a/xml/System.Security.AccessControl/EventWaitHandleAuditRule.xml
+++ b/xml/System.Security.AccessControl/EventWaitHandleAuditRule.xml
@@ -90,12 +90,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="identity" Type="System.Security.Principal.IdentityReference" />
         <Parameter Name="eventRights" Type="System.Security.AccessControl.EventWaitHandleRights" />
diff --git a/xml/System.Security.AccessControl/EventWaitHandleSecurity.xml b/xml/System.Security.AccessControl/EventWaitHandleSecurity.xml
index 6cf1abaa2d4..b2edfb74429 100644
--- a/xml/System.Security.AccessControl/EventWaitHandleSecurity.xml
+++ b/xml/System.Security.AccessControl/EventWaitHandleSecurity.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/FileSecurity.xml b/xml/System.Security.AccessControl/FileSecurity.xml
index 79b04bd3df8..14324ca4d44 100644
--- a/xml/System.Security.AccessControl/FileSecurity.xml
+++ b/xml/System.Security.AccessControl/FileSecurity.xml
@@ -148,10 +148,6 @@ You can add access or audit rules to the <xref:System.Security.AccessControl.Fil
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/FileSystemAccessRule.xml b/xml/System.Security.AccessControl/FileSystemAccessRule.xml
index b10776319ac..4c6d1fbf248 100644
--- a/xml/System.Security.AccessControl/FileSystemAccessRule.xml
+++ b/xml/System.Security.AccessControl/FileSystemAccessRule.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/FileSystemAuditRule.xml b/xml/System.Security.AccessControl/FileSystemAuditRule.xml
index 7a228da3107..b51088d7ee6 100644
--- a/xml/System.Security.AccessControl/FileSystemAuditRule.xml
+++ b/xml/System.Security.AccessControl/FileSystemAuditRule.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/FileSystemSecurity.xml b/xml/System.Security.AccessControl/FileSystemSecurity.xml
index 22b2daf436c..a3f7c2927b2 100644
--- a/xml/System.Security.AccessControl/FileSystemSecurity.xml
+++ b/xml/System.Security.AccessControl/FileSystemSecurity.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/GenericAce.xml b/xml/System.Security.AccessControl/GenericAce.xml
index 0a9af8d129a..e1821649926 100644
--- a/xml/System.Security.AccessControl/GenericAce.xml
+++ b/xml/System.Security.AccessControl/GenericAce.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an Access Control Entry (ACE), and is the base class for all other ACE classes.</summary>
@@ -284,12 +280,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -477,12 +467,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -526,12 +510,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.AccessControl/GenericAcl.xml b/xml/System.Security.AccessControl/GenericAcl.xml
index da1d8ae8f05..f2e49b045bf 100644
--- a/xml/System.Security.AccessControl/GenericAcl.xml
+++ b/xml/System.Security.AccessControl/GenericAcl.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an access control list (ACL) and is the base class for the <see cref="T:System.Security.AccessControl.CommonAcl" />, <see cref="T:System.Security.AccessControl.DiscretionaryAcl" />, <see cref="T:System.Security.AccessControl.RawAcl" />, and <see cref="T:System.Security.AccessControl.SystemAcl" /> classes.</summary>
diff --git a/xml/System.Security.AccessControl/GenericSecurityDescriptor.xml b/xml/System.Security.AccessControl/GenericSecurityDescriptor.xml
index b255a54dbcf..0f67fdfe0a6 100644
--- a/xml/System.Security.AccessControl/GenericSecurityDescriptor.xml
+++ b/xml/System.Security.AccessControl/GenericSecurityDescriptor.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a security descriptor. A security descriptor includes an owner, a primary group, a Discretionary Access Control List (DACL), and a System Access Control List (SACL).</summary>
@@ -154,12 +150,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -201,10 +191,6 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/KnownAce.xml b/xml/System.Security.AccessControl/KnownAce.xml
index 92013a34ecb..eaf59b2c2c2 100644
--- a/xml/System.Security.AccessControl/KnownAce.xml
+++ b/xml/System.Security.AccessControl/KnownAce.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates all Access Control Entry (ACE) types currently defined by Microsoft Corporation. All <see cref="T:System.Security.AccessControl.KnownAce" /> objects contain a 32-bit access mask and a <see cref="T:System.Security.Principal.SecurityIdentifier" /> object.</summary>
diff --git a/xml/System.Security.AccessControl/MutexAccessRule.xml b/xml/System.Security.AccessControl/MutexAccessRule.xml
index 6e04209d583..ca20e7bb36c 100644
--- a/xml/System.Security.AccessControl/MutexAccessRule.xml
+++ b/xml/System.Security.AccessControl/MutexAccessRule.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/MutexAuditRule.xml b/xml/System.Security.AccessControl/MutexAuditRule.xml
index 0c3914e334a..b9b58167094 100644
--- a/xml/System.Security.AccessControl/MutexAuditRule.xml
+++ b/xml/System.Security.AccessControl/MutexAuditRule.xml
@@ -90,12 +90,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="identity" Type="System.Security.Principal.IdentityReference" />
         <Parameter Name="eventRights" Type="System.Security.AccessControl.MutexRights" />
diff --git a/xml/System.Security.AccessControl/MutexSecurity.xml b/xml/System.Security.AccessControl/MutexSecurity.xml
index 1ada4843639..bbf90bca3c8 100644
--- a/xml/System.Security.AccessControl/MutexSecurity.xml
+++ b/xml/System.Security.AccessControl/MutexSecurity.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/NativeObjectSecurity+ExceptionFromErrorCode.xml b/xml/System.Security.AccessControl/NativeObjectSecurity+ExceptionFromErrorCode.xml
index eee93e01160..66cff2f2e17 100644
--- a/xml/System.Security.AccessControl/NativeObjectSecurity+ExceptionFromErrorCode.xml
+++ b/xml/System.Security.AccessControl/NativeObjectSecurity+ExceptionFromErrorCode.xml
@@ -25,10 +25,6 @@
     <BaseTypeName>System.Delegate</BaseTypeName>
   </Base>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/NativeObjectSecurity.xml b/xml/System.Security.AccessControl/NativeObjectSecurity.xml
index a0c834fd34a..03bb7f476f7 100644
--- a/xml/System.Security.AccessControl/NativeObjectSecurity.xml
+++ b/xml/System.Security.AccessControl/NativeObjectSecurity.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the ability to control access to native objects without direct manipulation of Access Control Lists (ACLs). Native object types are defined by the <see cref="T:System.Security.AccessControl.ResourceType" /> enumeration.</summary>
@@ -396,10 +392,6 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -452,10 +444,6 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -509,10 +497,6 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -575,10 +559,6 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/ObjectAccessRule.xml b/xml/System.Security.AccessControl/ObjectAccessRule.xml
index 4dbf0b5ba0d..c2ea6f5c7f4 100644
--- a/xml/System.Security.AccessControl/ObjectAccessRule.xml
+++ b/xml/System.Security.AccessControl/ObjectAccessRule.xml
@@ -54,12 +54,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="identity" Type="System.Security.Principal.IdentityReference" />
         <Parameter Name="accessMask" Type="System.Int32" />
diff --git a/xml/System.Security.AccessControl/ObjectAce.xml b/xml/System.Security.AccessControl/ObjectAce.xml
index 765d643f62f..f3f628a0f41 100644
--- a/xml/System.Security.AccessControl/ObjectAce.xml
+++ b/xml/System.Security.AccessControl/ObjectAce.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Controls access to Directory Services objects. This class represents an Access Control Entry (ACE) associated with a directory object.</summary>
diff --git a/xml/System.Security.AccessControl/ObjectAuditRule.xml b/xml/System.Security.AccessControl/ObjectAuditRule.xml
index 19a2c8e05bc..f89635efffe 100644
--- a/xml/System.Security.AccessControl/ObjectAuditRule.xml
+++ b/xml/System.Security.AccessControl/ObjectAuditRule.xml
@@ -54,12 +54,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="identity" Type="System.Security.Principal.IdentityReference" />
         <Parameter Name="accessMask" Type="System.Int32" />
diff --git a/xml/System.Security.AccessControl/ObjectSecurity.xml b/xml/System.Security.AccessControl/ObjectSecurity.xml
index 109a335575c..385444b1079 100644
--- a/xml/System.Security.AccessControl/ObjectSecurity.xml
+++ b/xml/System.Security.AccessControl/ObjectSecurity.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the ability to control access to objects without direct manipulation of Access Control Lists (ACLs). This class is the abstract base class for the <see cref="T:System.Security.AccessControl.CommonObjectSecurity" /> and <see cref="T:System.Security.AccessControl.DirectoryObjectSecurity" /> classes.</summary>
diff --git a/xml/System.Security.AccessControl/ObjectSecurity`1.xml b/xml/System.Security.AccessControl/ObjectSecurity`1.xml
index ec4dd2bfce7..800f2ab189e 100644
--- a/xml/System.Security.AccessControl/ObjectSecurity`1.xml
+++ b/xml/System.Security.AccessControl/ObjectSecurity`1.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The access rights for the object.</typeparam>
@@ -137,10 +133,6 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -187,10 +179,6 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -237,10 +225,6 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -291,10 +275,6 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/PrivilegeNotHeldException.xml b/xml/System.Security.AccessControl/PrivilegeNotHeldException.xml
index de77856b89e..9d6def6ec13 100644
--- a/xml/System.Security.AccessControl/PrivilegeNotHeldException.xml
+++ b/xml/System.Security.AccessControl/PrivilegeNotHeldException.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -194,10 +190,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/QualifiedAce.xml b/xml/System.Security.AccessControl/QualifiedAce.xml
index dde48dbe76d..21d58037a53 100644
--- a/xml/System.Security.AccessControl/QualifiedAce.xml
+++ b/xml/System.Security.AccessControl/QualifiedAce.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an Access Control Entry (ACE) that contains a qualifier. The qualifier, represented by an <see cref="T:System.Security.AccessControl.AceQualifier" /> object, specifies whether the ACE allows access, denies access, causes system audits, or causes system alarms. The <see cref="T:System.Security.AccessControl.QualifiedAce" /> class is the abstract base class for the <see cref="T:System.Security.AccessControl.CommonAce" /> and <see cref="T:System.Security.AccessControl.ObjectAce" /> classes.</summary>
diff --git a/xml/System.Security.AccessControl/RawAcl.xml b/xml/System.Security.AccessControl/RawAcl.xml
index 0e4da488cc9..0c12e342774 100644
--- a/xml/System.Security.AccessControl/RawAcl.xml
+++ b/xml/System.Security.AccessControl/RawAcl.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an Access Control List (ACL).</summary>
diff --git a/xml/System.Security.AccessControl/RawSecurityDescriptor.xml b/xml/System.Security.AccessControl/RawSecurityDescriptor.xml
index 506d428e6bc..43f257f8500 100644
--- a/xml/System.Security.AccessControl/RawSecurityDescriptor.xml
+++ b/xml/System.Security.AccessControl/RawSecurityDescriptor.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a security descriptor. A security descriptor includes an owner, a primary group, a Discretionary Access Control List (DACL), and a System Access Control List (SACL).</summary>
@@ -74,10 +70,6 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -117,12 +109,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="binaryForm" Type="System.Byte[]" />
         <Parameter Name="offset" Type="System.Int32" />
diff --git a/xml/System.Security.AccessControl/RegistryAccessRule.xml b/xml/System.Security.AccessControl/RegistryAccessRule.xml
index 423d2ef454d..13e9c1c05a3 100644
--- a/xml/System.Security.AccessControl/RegistryAccessRule.xml
+++ b/xml/System.Security.AccessControl/RegistryAccessRule.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/RegistryAuditRule.xml b/xml/System.Security.AccessControl/RegistryAuditRule.xml
index 5e45805e459..141ec477f18 100644
--- a/xml/System.Security.AccessControl/RegistryAuditRule.xml
+++ b/xml/System.Security.AccessControl/RegistryAuditRule.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/RegistrySecurity.xml b/xml/System.Security.AccessControl/RegistrySecurity.xml
index 3c3e9d0879c..502338593bb 100644
--- a/xml/System.Security.AccessControl/RegistrySecurity.xml
+++ b/xml/System.Security.AccessControl/RegistrySecurity.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/SemaphoreAccessRule.xml b/xml/System.Security.AccessControl/SemaphoreAccessRule.xml
index ff92001c0fc..7f97c6e124c 100644
--- a/xml/System.Security.AccessControl/SemaphoreAccessRule.xml
+++ b/xml/System.Security.AccessControl/SemaphoreAccessRule.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/SemaphoreAuditRule.xml b/xml/System.Security.AccessControl/SemaphoreAuditRule.xml
index bbee940e3ea..148d3ba626a 100644
--- a/xml/System.Security.AccessControl/SemaphoreAuditRule.xml
+++ b/xml/System.Security.AccessControl/SemaphoreAuditRule.xml
@@ -95,10 +95,6 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/SemaphoreSecurity.xml b/xml/System.Security.AccessControl/SemaphoreSecurity.xml
index 4491e0b2585..d1465fda466 100644
--- a/xml/System.Security.AccessControl/SemaphoreSecurity.xml
+++ b/xml/System.Security.AccessControl/SemaphoreSecurity.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.AccessControl/SystemAcl.xml b/xml/System.Security.AccessControl/SystemAcl.xml
index c9db0fe34c9..6fad6bf5e1e 100644
--- a/xml/System.Security.AccessControl/SystemAcl.xml
+++ b/xml/System.Security.AccessControl/SystemAcl.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a System Access Control List (SACL).</summary>
diff --git a/xml/System.Security.Authentication.ExtendedProtection/ExtendedProtectionPolicy.xml b/xml/System.Security.Authentication.ExtendedProtection/ExtendedProtectionPolicy.xml
index f1c5ae58218..ce658bdb96b 100644
--- a/xml/System.Security.Authentication.ExtendedProtection/ExtendedProtectionPolicy.xml
+++ b/xml/System.Security.Authentication.ExtendedProtection/ExtendedProtectionPolicy.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.ComponentModel.TypeConverter(typeof(System.Security.Authentication.ExtendedProtection.ExtendedProtectionPolicyTypeConverter))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.TypeConverter(typeof(System.Security.Authentication.ExtendedProtection.ExtendedProtectionPolicyTypeConverter))&gt;]</AttributeName>
@@ -176,10 +172,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1" />
@@ -234,12 +226,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="policyEnforcement" Type="System.Security.Authentication.ExtendedProtection.PolicyEnforcement" />
         <Parameter Name="customChannelBinding" Type="System.Security.Authentication.ExtendedProtection.ChannelBinding" />
@@ -728,12 +714,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Authentication.ExtendedProtection/ExtendedProtectionPolicyTypeConverter.xml b/xml/System.Security.Authentication.ExtendedProtection/ExtendedProtectionPolicyTypeConverter.xml
index cc47632b3cc..a651768e6e7 100644
--- a/xml/System.Security.Authentication.ExtendedProtection/ExtendedProtectionPolicyTypeConverter.xml
+++ b/xml/System.Security.Authentication.ExtendedProtection/ExtendedProtectionPolicyTypeConverter.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Authentication.ExtendedProtection.ExtendedProtectionPolicyTypeConverter" /> class represents the type converter for extended protection policy used by the server to validate incoming client connections.</summary>
diff --git a/xml/System.Security.Authentication.ExtendedProtection/ServiceNameCollection.xml b/xml/System.Security.Authentication.ExtendedProtection/ServiceNameCollection.xml
index 4d303aa96b2..540c54dbfb6 100644
--- a/xml/System.Security.Authentication.ExtendedProtection/ServiceNameCollection.xml
+++ b/xml/System.Security.Authentication.ExtendedProtection/ServiceNameCollection.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -161,12 +157,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Authentication/AuthenticationException.xml b/xml/System.Security.Authentication/AuthenticationException.xml
index 9ff886d5a70..4fc0b84a1f2 100644
--- a/xml/System.Security.Authentication/AuthenticationException.xml
+++ b/xml/System.Security.Authentication/AuthenticationException.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -231,10 +227,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Security.Authentication/InvalidCredentialException.xml b/xml/System.Security.Authentication/InvalidCredentialException.xml
index 255465ec811..cf0f5a18aa5 100644
--- a/xml/System.Security.Authentication/InvalidCredentialException.xml
+++ b/xml/System.Security.Authentication/InvalidCredentialException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -221,10 +217,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Security.Claims/Claim.xml b/xml/System.Security.Claims/Claim.xml
index 37eec2379dc..ab128383c5c 100644
--- a/xml/System.Security.Claims/Claim.xml
+++ b/xml/System.Security.Claims/Claim.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -541,12 +537,6 @@ if (null != principal)
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="type" Type="System.String">
           <Attributes>
@@ -621,12 +611,6 @@ if (null != principal)
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="type" Type="System.String">
           <Attributes>
@@ -819,10 +803,6 @@ if (null != principal)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
@@ -1027,10 +1007,6 @@ if (null != principal)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Claims.ClaimsIdentity</ReturnType>
diff --git a/xml/System.Security.Claims/ClaimTypes.xml b/xml/System.Security.Claims/ClaimTypes.xml
index 7726979a2b3..98cd54ac161 100644
--- a/xml/System.Security.Claims/ClaimTypes.xml
+++ b/xml/System.Security.Claims/ClaimTypes.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.Security.Claims/ClaimValueTypes.xml b/xml/System.Security.Claims/ClaimValueTypes.xml
index 31d2b7b8a75..333a311ba7e 100644
--- a/xml/System.Security.Claims/ClaimValueTypes.xml
+++ b/xml/System.Security.Claims/ClaimValueTypes.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.Security.Claims/ClaimsIdentity.xml b/xml/System.Security.Claims/ClaimsIdentity.xml
index 7d93641ab37..9865fa61c44 100644
--- a/xml/System.Security.Claims/ClaimsIdentity.xml
+++ b/xml/System.Security.Claims/ClaimsIdentity.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -418,12 +414,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="identity" Type="System.Security.Principal.IIdentity" />
       </Parameters>
@@ -484,12 +474,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="authenticationType" Type="System.String" />
       </Parameters>
@@ -550,12 +534,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="claims" Type="System.Collections.Generic.IEnumerable&lt;System.Security.Claims.Claim&gt;">
           <Attributes>
@@ -681,12 +659,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="identity" Type="System.Security.Principal.IIdentity" />
         <Parameter Name="claims" Type="System.Collections.Generic.IEnumerable&lt;System.Security.Claims.Claim&gt;">
@@ -756,12 +728,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="authenticationType" Type="System.String" />
         <Parameter Name="nameType" Type="System.String" />
@@ -826,12 +792,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="claims" Type="System.Collections.Generic.IEnumerable&lt;System.Security.Claims.Claim&gt;">
           <Attributes>
@@ -905,12 +865,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="identity" Type="System.Security.Principal.IIdentity" />
         <Parameter Name="claims" Type="System.Collections.Generic.IEnumerable&lt;System.Security.Claims.Claim&gt;">
@@ -993,14 +947,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Claims.ClaimsIdentity</ReturnType>
@@ -1191,10 +1137,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1251,14 +1193,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1468,10 +1402,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
@@ -2070,14 +2000,6 @@ The comparison is done in <xref:System.StringComparison.OrdinalIgnoreCase?displa
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2128,10 +2050,6 @@ The comparison is done in <xref:System.StringComparison.OrdinalIgnoreCase?displa
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2237,10 +2155,6 @@ The comparison is done in <xref:System.StringComparison.OrdinalIgnoreCase?displa
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -2351,10 +2265,6 @@ The comparison is done in <xref:System.StringComparison.OrdinalIgnoreCase?displa
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
diff --git a/xml/System.Security.Claims/ClaimsPrincipal.xml b/xml/System.Security.Claims/ClaimsPrincipal.xml
index c41401aad07..cadd87a46e1 100644
--- a/xml/System.Security.Claims/ClaimsPrincipal.xml
+++ b/xml/System.Security.Claims/ClaimsPrincipal.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -770,10 +766,6 @@ if (HttpContext.Current.User is ClaimsPrincipal principal)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Claims.ClaimsPrincipal</ReturnType>
@@ -829,10 +821,6 @@ if (HttpContext.Current.User is ClaimsPrincipal principal)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
@@ -1351,10 +1339,6 @@ Each <xref:System.Security.Claims.ClaimsIdentity> is called.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Principal.IIdentity</ReturnType>
diff --git a/xml/System.Security.Cryptography.Cose/CoseHeaderLabel.xml b/xml/System.Security.Cryptography.Cose/CoseHeaderLabel.xml
index 8650eebbe94..938a6784a6e 100644
--- a/xml/System.Security.Cryptography.Cose/CoseHeaderLabel.xml
+++ b/xml/System.Security.Cryptography.Cose/CoseHeaderLabel.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a COSE header label.</summary>
@@ -168,12 +164,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Cose/CoseHeaderMap.xml b/xml/System.Security.Cryptography.Cose/CoseHeaderMap.xml
index 3c45f3272a0..ef20c005a73 100644
--- a/xml/System.Security.Cryptography.Cose/CoseHeaderMap.xml
+++ b/xml/System.Security.Cryptography.Cose/CoseHeaderMap.xml
@@ -114,12 +114,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -241,12 +235,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -455,12 +443,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -550,12 +532,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -648,10 +624,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.ICollection&lt;System.Security.Cryptography.Cose.CoseHeaderLabel&gt;</ReturnType>
@@ -873,10 +845,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.ICollection&lt;System.Security.Cryptography.Cose.CoseHeaderValue&gt;</ReturnType>
diff --git a/xml/System.Security.Cryptography.Cose/CoseHeaderValue.xml b/xml/System.Security.Cryptography.Cose/CoseHeaderValue.xml
index 3b4779fc7a2..2d195e40d2f 100644
--- a/xml/System.Security.Cryptography.Cose/CoseHeaderValue.xml
+++ b/xml/System.Security.Cryptography.Cose/CoseHeaderValue.xml
@@ -66,12 +66,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -136,12 +130,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Cose.CoseHeaderValue</ReturnType>
       </ReturnValue>
@@ -196,12 +184,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Cose.CoseHeaderValue</ReturnType>
       </ReturnValue>
@@ -282,12 +264,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Cose.CoseHeaderValue</ReturnType>
       </ReturnValue>
@@ -339,12 +315,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -422,12 +392,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Cose/CoseMessage.xml b/xml/System.Security.Cryptography.Cose/CoseMessage.xml
index 69e254fdc60..0a8834aa6df 100644
--- a/xml/System.Security.Cryptography.Cose/CoseMessage.xml
+++ b/xml/System.Security.Cryptography.Cose/CoseMessage.xml
@@ -56,12 +56,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Cose.CoseMultiSignMessage</ReturnType>
       </ReturnValue>
@@ -120,12 +114,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Cose.CoseSign1Message</ReturnType>
       </ReturnValue>
@@ -184,12 +172,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -271,10 +253,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Cose.CoseHeaderMap</ReturnType>
@@ -355,10 +333,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Cose.CoseHeaderMap</ReturnType>
diff --git a/xml/System.Security.Cryptography.Cose/CoseMultiSignMessage.xml b/xml/System.Security.Cryptography.Cose/CoseMultiSignMessage.xml
index 888cce9e841..592b7776c1f 100644
--- a/xml/System.Security.Cryptography.Cose/CoseMultiSignMessage.xml
+++ b/xml/System.Security.Cryptography.Cose/CoseMultiSignMessage.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a multiple signature COSE_Sign message.</summary>
@@ -138,12 +134,6 @@ One or more of the labels specified in a <see cref="P:System.Security.Cryptograp
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -288,12 +278,6 @@ One or more of the labels specified in a <see cref="P:System.Security.Cryptograp
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -581,12 +565,6 @@ One or more of the labels specified in a <see cref="P:System.Security.Cryptograp
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -797,12 +775,6 @@ One or more of the labels specified in a <see cref="P:System.Security.Cryptograp
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -872,12 +844,6 @@ One or more of the labels specified in a <see cref="P:System.Security.Cryptograp
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -914,12 +880,6 @@ The message does not contain at least one signature.
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -993,12 +953,6 @@ One or more of the labels specified in a <see cref="P:System.Security.Cryptograp
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Cose/CoseSign1Message.xml b/xml/System.Security.Cryptography.Cose/CoseSign1Message.xml
index 3c07a5aef67..2fce0b030eb 100644
--- a/xml/System.Security.Cryptography.Cose/CoseSign1Message.xml
+++ b/xml/System.Security.Cryptography.Cose/CoseSign1Message.xml
@@ -78,12 +78,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -130,12 +124,6 @@ One or more of the labels specified in a <see cref="P:System.Security.Cryptograp
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -231,12 +219,6 @@ One or more of the labels specified in a <see cref="P:System.Security.Cryptograp
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Byte[]&gt;</ReturnType>
       </ReturnValue>
@@ -289,12 +271,6 @@ One or more of the labels specified in a <see cref="P:System.Security.Cryptograp
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -519,12 +495,6 @@ One or more of the labels specified in a <see cref="P:System.Security.Cryptograp
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -582,12 +552,6 @@ The algorithm protected header doesn't match with the algorithms supported by th
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -707,12 +671,6 @@ The algorithm protected header doesn't match with the algorithms supported by th
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Boolean&gt;</ReturnType>
       </ReturnValue>
@@ -777,12 +735,6 @@ The algorithm protected header doesn't match with the algorithms supported by th
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Cose/CoseSignature.xml b/xml/System.Security.Cryptography.Cose/CoseSignature.xml
index 9555278388f..6e9081f0ff2 100644
--- a/xml/System.Security.Cryptography.Cose/CoseSignature.xml
+++ b/xml/System.Security.Cryptography.Cose/CoseSignature.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a COSE_Signature that carries one signature and information about that signature associated with a <see cref="T:System.Security.Cryptography.Cose.CoseMultiSignMessage" />.</summary>
@@ -71,10 +67,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlyMemory&lt;System.Byte&gt;</ReturnType>
@@ -103,10 +95,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlyMemory&lt;System.Byte&gt;</ReturnType>
@@ -270,12 +258,6 @@ The algorithm protected header doesn't match with the algorithms supported by th
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -453,12 +435,6 @@ The algorithm protected header doesn't match with the algorithms supported by th
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Cose/CoseSigner.xml b/xml/System.Security.Cryptography.Cose/CoseSigner.xml
index c12d176ecb2..752c2c39231 100644
--- a/xml/System.Security.Cryptography.Cose/CoseSigner.xml
+++ b/xml/System.Security.Cryptography.Cose/CoseSigner.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides signing information to be used with sign operations in <see cref="T:System.Security.Cryptography.Cose.CoseSign1Message" /> and <see cref="T:System.Security.Cryptography.Cose.CoseMultiSignMessage" />.</summary>
@@ -43,12 +39,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="key" Type="System.Security.Cryptography.AsymmetricAlgorithm">
           <Attributes>
@@ -226,10 +216,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.RSASignaturePadding</ReturnType>
diff --git a/xml/System.Security.Cryptography.Pkcs/AlgorithmIdentifier.xml b/xml/System.Security.Cryptography.Pkcs/AlgorithmIdentifier.xml
index 630b71c4ae4..14afcd1d21a 100644
--- a/xml/System.Security.Cryptography.Pkcs/AlgorithmIdentifier.xml
+++ b/xml/System.Security.Cryptography.Pkcs/AlgorithmIdentifier.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.AlgorithmIdentifier" /> class defines the algorithm used for a cryptographic operation.</summary>
diff --git a/xml/System.Security.Cryptography.Pkcs/CmsRecipient.xml b/xml/System.Security.Cryptography.Pkcs/CmsRecipient.xml
index 11433da204b..82b8d6028c3 100644
--- a/xml/System.Security.Cryptography.Pkcs/CmsRecipient.xml
+++ b/xml/System.Security.Cryptography.Pkcs/CmsRecipient.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipient" /> class defines the recipient of a CMS/PKCS #7 message.</summary>
@@ -325,10 +321,6 @@ The <paramref name="recipientIdentifierType" /> value is not supported.</excepti
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.RSAEncryptionPadding</ReturnType>
diff --git a/xml/System.Security.Cryptography.Pkcs/CmsRecipientCollection.xml b/xml/System.Security.Cryptography.Pkcs/CmsRecipientCollection.xml
index 0400529488d..9a52b62c09c 100644
--- a/xml/System.Security.Cryptography.Pkcs/CmsRecipientCollection.xml
+++ b/xml/System.Security.Cryptography.Pkcs/CmsRecipientCollection.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipientCollection" /> class represents a set of <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipient" /> objects. <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipientCollection" /> implements the <see cref="T:System.Collections.ICollection" /> interface.</summary>
diff --git a/xml/System.Security.Cryptography.Pkcs/CmsRecipientEnumerator.xml b/xml/System.Security.Cryptography.Pkcs/CmsRecipientEnumerator.xml
index 7f7fad6fe01..889107dd2be 100644
--- a/xml/System.Security.Cryptography.Pkcs/CmsRecipientEnumerator.xml
+++ b/xml/System.Security.Cryptography.Pkcs/CmsRecipientEnumerator.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipientEnumerator" /> class provides enumeration functionality for the <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipientCollection" /> collection. <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipientEnumerator" /> implements the <see cref="T:System.Collections.IEnumerator" /> interface.</summary>
diff --git a/xml/System.Security.Cryptography.Pkcs/CmsSigner.xml b/xml/System.Security.Cryptography.Pkcs/CmsSigner.xml
index 21f8663747f..b0907df9767 100644
--- a/xml/System.Security.Cryptography.Pkcs/CmsSigner.xml
+++ b/xml/System.Security.Cryptography.Pkcs/CmsSigner.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a potential signer for a CMS/PKCS#7 signed message.</summary>
@@ -126,10 +122,6 @@
           <AttributeName Language="C#">[System.Obsolete("CmsSigner(CspParameters) is obsolete and is not supported. Use an alternative constructor instead.", DiagnosticId="SYSLIB0034", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("CmsSigner(CspParameters) is obsolete and is not supported. Use an alternative constructor instead.", DiagnosticId="SYSLIB0034", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -449,10 +441,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509Certificate2Collection</ReturnType>
@@ -500,14 +488,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Oid</ReturnType>
@@ -644,10 +624,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.CryptographicAttributeObjectCollection</ReturnType>
@@ -730,10 +706,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.CryptographicAttributeObjectCollection</ReturnType>
diff --git a/xml/System.Security.Cryptography.Pkcs/ContentInfo.xml b/xml/System.Security.Cryptography.Pkcs/ContentInfo.xml
index 637ea109e76..2ddf4ec06be 100644
--- a/xml/System.Security.Cryptography.Pkcs/ContentInfo.xml
+++ b/xml/System.Security.Cryptography.Pkcs/ContentInfo.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.ContentInfo" /> class represents the CMS/PKCS #7 ContentInfo data structure as defined in the CMS/PKCS #7 standards document. This data structure is the basis for all CMS/PKCS #7 messages.</summary>
@@ -325,12 +321,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Security</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Oid</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Pkcs/EnvelopedCms.xml b/xml/System.Security.Cryptography.Pkcs/EnvelopedCms.xml
index 901edb3e669..a57e7042f64 100644
--- a/xml/System.Security.Cryptography.Pkcs/EnvelopedCms.xml
+++ b/xml/System.Security.Cryptography.Pkcs/EnvelopedCms.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a CMS/PKCS#7 structure for enveloped data.</summary>
@@ -480,12 +476,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Security</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Pkcs/KeyAgreeRecipientInfo.xml b/xml/System.Security.Cryptography.Pkcs/KeyAgreeRecipientInfo.xml
index 529cbeef7fd..c6a6a2d33e6 100644
--- a/xml/System.Security.Cryptography.Pkcs/KeyAgreeRecipientInfo.xml
+++ b/xml/System.Security.Cryptography.Pkcs/KeyAgreeRecipientInfo.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.KeyAgreeRecipientInfo" /> class defines key agreement recipient information. Key agreement algorithms typically use the Diffie-Hellman key agreement algorithm, in which the two parties that establish a shared cryptographic key both take part in its generation and, by definition, agree on that key. This is in contrast to key transport algorithms, in which one party generates the key unilaterally and sends, or transports it, to the other party.</summary>
@@ -264,10 +260,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[get: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography.Pkcs/KeyTransRecipientInfo.xml b/xml/System.Security.Cryptography.Pkcs/KeyTransRecipientInfo.xml
index 4f90a85d9f8..e195f6035eb 100644
--- a/xml/System.Security.Cryptography.Pkcs/KeyTransRecipientInfo.xml
+++ b/xml/System.Security.Cryptography.Pkcs/KeyTransRecipientInfo.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.KeyTransRecipientInfo" /> class defines key transport recipient information.        *Key transport* algorithms typically use the RSA algorithm, in which  an originator establishes a shared cryptographic key with a recipient by generating that key and  then transporting it to the recipient. This is in contrast to *key agreement* algorithms, in which the two parties that will be using a cryptographic key both take part in its generation, thereby mutually agreeing to that key.</summary>
diff --git a/xml/System.Security.Cryptography.Pkcs/Pkcs12Builder.xml b/xml/System.Security.Cryptography.Pkcs/Pkcs12Builder.xml
index fd2fc0f33d2..27831897f71 100644
--- a/xml/System.Security.Cryptography.Pkcs/Pkcs12Builder.xml
+++ b/xml/System.Security.Cryptography.Pkcs/Pkcs12Builder.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Enables the creation of PKCS#12 PFX data values. This class cannot be inherited.</summary>
@@ -401,12 +397,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -456,12 +446,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -547,12 +531,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Pkcs/Pkcs12CertBag.xml b/xml/System.Security.Cryptography.Pkcs/Pkcs12CertBag.xml
index 8e42423fa9c..08e6da8f0f3 100644
--- a/xml/System.Security.Cryptography.Pkcs/Pkcs12CertBag.xml
+++ b/xml/System.Security.Cryptography.Pkcs/Pkcs12CertBag.xml
@@ -126,12 +126,6 @@ For X.509 public-key certificates, the value of this property is a BER-encoded O
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509Certificate2</ReturnType>
       </ReturnValue>
@@ -163,12 +157,6 @@ For X.509 public-key certificates, the value of this property is a BER-encoded O
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Oid</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Pkcs/Pkcs12Info.xml b/xml/System.Security.Cryptography.Pkcs/Pkcs12Info.xml
index a8d9a2c7e62..f21089c70ea 100644
--- a/xml/System.Security.Cryptography.Pkcs/Pkcs12Info.xml
+++ b/xml/System.Security.Cryptography.Pkcs/Pkcs12Info.xml
@@ -47,10 +47,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.ObjectModel.ReadOnlyCollection&lt;System.Security.Cryptography.Pkcs.Pkcs12SafeContents&gt;</ReturnType>
@@ -219,12 +215,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Pkcs/Pkcs12SafeBag.xml b/xml/System.Security.Cryptography.Pkcs/Pkcs12SafeBag.xml
index b6941a65985..534dd6c4e13 100644
--- a/xml/System.Security.Cryptography.Pkcs/Pkcs12SafeBag.xml
+++ b/xml/System.Security.Cryptography.Pkcs/Pkcs12SafeBag.xml
@@ -98,10 +98,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.CryptographicAttributeObjectCollection</ReturnType>
@@ -130,12 +126,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -202,12 +192,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Oid</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Pkcs/Pkcs12SafeContents.xml b/xml/System.Security.Cryptography.Pkcs/Pkcs12SafeContents.xml
index 92b95a7c3a8..d016961d8b6 100644
--- a/xml/System.Security.Cryptography.Pkcs/Pkcs12SafeContents.xml
+++ b/xml/System.Security.Cryptography.Pkcs/Pkcs12SafeContents.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a PKCS#12 SafeContents value. This class cannot be inherited.</summary>
@@ -494,12 +490,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -544,12 +534,6 @@ The contents were not successfully decrypted.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -594,12 +578,6 @@ The contents were not successfully decrypted.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -644,12 +622,6 @@ The contents were not successfully decrypted.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Pkcs/Pkcs12SafeContentsBag.xml b/xml/System.Security.Cryptography.Pkcs/Pkcs12SafeContentsBag.xml
index b10aae6f892..a19d58f4bd6 100644
--- a/xml/System.Security.Cryptography.Pkcs/Pkcs12SafeContentsBag.xml
+++ b/xml/System.Security.Cryptography.Pkcs/Pkcs12SafeContentsBag.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the SafeContentsBag from PKCS#12, a container whose contents are a PKCS#12 SafeContents value. This class cannot be inherited.</summary>
diff --git a/xml/System.Security.Cryptography.Pkcs/Pkcs12SecretBag.xml b/xml/System.Security.Cryptography.Pkcs/Pkcs12SecretBag.xml
index 240e3145c76..6b027745d4e 100644
--- a/xml/System.Security.Cryptography.Pkcs/Pkcs12SecretBag.xml
+++ b/xml/System.Security.Cryptography.Pkcs/Pkcs12SecretBag.xml
@@ -42,12 +42,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Oid</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Pkcs/Pkcs8PrivateKeyInfo.xml b/xml/System.Security.Cryptography.Pkcs/Pkcs8PrivateKeyInfo.xml
index 061f37a9b41..d5a7b96fb7a 100644
--- a/xml/System.Security.Cryptography.Pkcs/Pkcs8PrivateKeyInfo.xml
+++ b/xml/System.Security.Cryptography.Pkcs/Pkcs8PrivateKeyInfo.xml
@@ -106,10 +106,6 @@ Callers are therefore advised to only use a `true` value for the `skipCopies` pa
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Oid</ReturnType>
@@ -170,10 +166,6 @@ Callers are therefore advised to only use a `true` value for the `skipCopies` pa
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.CryptographicAttributeObjectCollection</ReturnType>
@@ -202,12 +194,6 @@ Callers are therefore advised to only use a `true` value for the `skipCopies` pa
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Pkcs.Pkcs8PrivateKeyInfo</ReturnType>
       </ReturnValue>
@@ -391,12 +377,6 @@ The contents of <paramref name="source" /> do not represent an ASN.1-BER-encoded
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -426,12 +406,6 @@ The contents of <paramref name="source" /> do not represent an ASN.1-BER-encoded
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -483,12 +457,6 @@ The contents of <paramref name="source" /> do not represent an ASN.1-BER-encoded
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Pkcs/Pkcs9AttributeObject.xml b/xml/System.Security.Cryptography.Pkcs/Pkcs9AttributeObject.xml
index d7ca85b8c36..5014a46b63f 100644
--- a/xml/System.Security.Cryptography.Pkcs/Pkcs9AttributeObject.xml
+++ b/xml/System.Security.Cryptography.Pkcs/Pkcs9AttributeObject.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an attribute used for CMS/PKCS #7 and PKCS #9 operations.</summary>
@@ -276,10 +272,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Oid</ReturnType>
diff --git a/xml/System.Security.Cryptography.Pkcs/Pkcs9ContentType.xml b/xml/System.Security.Cryptography.Pkcs/Pkcs9ContentType.xml
index 9c87aa2202a..0777d9230e4 100644
--- a/xml/System.Security.Cryptography.Pkcs/Pkcs9ContentType.xml
+++ b/xml/System.Security.Cryptography.Pkcs/Pkcs9ContentType.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.Pkcs9ContentType" /> class defines the type of the content of a CMS/PKCS #7 message.</summary>
diff --git a/xml/System.Security.Cryptography.Pkcs/Pkcs9DocumentDescription.xml b/xml/System.Security.Cryptography.Pkcs/Pkcs9DocumentDescription.xml
index 7a67fab651e..7e20841d386 100644
--- a/xml/System.Security.Cryptography.Pkcs/Pkcs9DocumentDescription.xml
+++ b/xml/System.Security.Cryptography.Pkcs/Pkcs9DocumentDescription.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.Pkcs9DocumentDescription" /> class defines the description of the content of a CMS/PKCS #7 message.</summary>
diff --git a/xml/System.Security.Cryptography.Pkcs/Pkcs9DocumentName.xml b/xml/System.Security.Cryptography.Pkcs/Pkcs9DocumentName.xml
index 299d4e925a7..069173ab9b3 100644
--- a/xml/System.Security.Cryptography.Pkcs/Pkcs9DocumentName.xml
+++ b/xml/System.Security.Cryptography.Pkcs/Pkcs9DocumentName.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.Pkcs9DocumentName" /> class defines the name of a CMS/PKCS #7 message.</summary>
diff --git a/xml/System.Security.Cryptography.Pkcs/Pkcs9LocalKeyId.xml b/xml/System.Security.Cryptography.Pkcs/Pkcs9LocalKeyId.xml
index 16b9a317dc8..0113fbd1c17 100644
--- a/xml/System.Security.Cryptography.Pkcs/Pkcs9LocalKeyId.xml
+++ b/xml/System.Security.Cryptography.Pkcs/Pkcs9LocalKeyId.xml
@@ -73,12 +73,6 @@ The primary use of the LocalKeyId attribute is to associate an X.509 Public Key
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="keyId" Type="System.Byte[]" />
       </Parameters>
@@ -130,12 +124,6 @@ The primary use of the LocalKeyId attribute is to associate an X.509 Public Key
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Pkcs/Pkcs9MessageDigest.xml b/xml/System.Security.Cryptography.Pkcs/Pkcs9MessageDigest.xml
index d428e8e22b7..1b3ddb6b63b 100644
--- a/xml/System.Security.Cryptography.Pkcs/Pkcs9MessageDigest.xml
+++ b/xml/System.Security.Cryptography.Pkcs/Pkcs9MessageDigest.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.Pkcs9MessageDigest" /> class defines the message digest of a CMS/PKCS #7 message.</summary>
diff --git a/xml/System.Security.Cryptography.Pkcs/Pkcs9SigningTime.xml b/xml/System.Security.Cryptography.Pkcs/Pkcs9SigningTime.xml
index 8d0ab41a7ec..47641088dcf 100644
--- a/xml/System.Security.Cryptography.Pkcs/Pkcs9SigningTime.xml
+++ b/xml/System.Security.Cryptography.Pkcs/Pkcs9SigningTime.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the signing date and time of a signature. A <see cref="T:System.Security.Cryptography.Pkcs.Pkcs9SigningTime" /> object can be used as an authenticated attribute of a <see cref="T:System.Security.Cryptography.Pkcs.CmsSigner" /> object when an authenticated date and time are to accompany a digital signature.</summary>
diff --git a/xml/System.Security.Cryptography.Pkcs/PublicKeyInfo.xml b/xml/System.Security.Cryptography.Pkcs/PublicKeyInfo.xml
index 88ff8397491..3a426c6977b 100644
--- a/xml/System.Security.Cryptography.Pkcs/PublicKeyInfo.xml
+++ b/xml/System.Security.Cryptography.Pkcs/PublicKeyInfo.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.PublicKeyInfo" /> class represents information associated with a public key.</summary>
diff --git a/xml/System.Security.Cryptography.Pkcs/RecipientInfo.xml b/xml/System.Security.Cryptography.Pkcs/RecipientInfo.xml
index 2e73a189b61..6fdee784d5f 100644
--- a/xml/System.Security.Cryptography.Pkcs/RecipientInfo.xml
+++ b/xml/System.Security.Cryptography.Pkcs/RecipientInfo.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.RecipientInfo" /> class represents information about a CMS/PKCS #7 message recipient. The <see cref="T:System.Security.Cryptography.Pkcs.RecipientInfo" /> class is an abstract class inherited by the <see cref="T:System.Security.Cryptography.Pkcs.KeyAgreeRecipientInfo" /> and <see cref="T:System.Security.Cryptography.Pkcs.KeyTransRecipientInfo" /> classes.</summary>
diff --git a/xml/System.Security.Cryptography.Pkcs/RecipientInfoCollection.xml b/xml/System.Security.Cryptography.Pkcs/RecipientInfoCollection.xml
index bb7685c642b..57378b4870e 100644
--- a/xml/System.Security.Cryptography.Pkcs/RecipientInfoCollection.xml
+++ b/xml/System.Security.Cryptography.Pkcs/RecipientInfoCollection.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.RecipientInfoCollection" /> class represents a collection of <see cref="T:System.Security.Cryptography.Pkcs.RecipientInfo" /> objects. <see cref="T:System.Security.Cryptography.Pkcs.RecipientInfoCollection" /> implements the <see cref="T:System.Collections.ICollection" /> interface.</summary>
diff --git a/xml/System.Security.Cryptography.Pkcs/RecipientInfoEnumerator.xml b/xml/System.Security.Cryptography.Pkcs/RecipientInfoEnumerator.xml
index bab1bf83840..103031a8a07 100644
--- a/xml/System.Security.Cryptography.Pkcs/RecipientInfoEnumerator.xml
+++ b/xml/System.Security.Cryptography.Pkcs/RecipientInfoEnumerator.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.RecipientInfoEnumerator" /> class provides enumeration functionality for the <see cref="T:System.Security.Cryptography.Pkcs.RecipientInfoCollection" /> collection. <see cref="T:System.Security.Cryptography.Pkcs.RecipientInfoEnumerator" /> implements the <see cref="T:System.Collections.IEnumerator" /> interface.</summary>
diff --git a/xml/System.Security.Cryptography.Pkcs/Rfc3161TimestampRequest.xml b/xml/System.Security.Cryptography.Pkcs/Rfc3161TimestampRequest.xml
index 96a4868ad51..077db1d9757 100644
--- a/xml/System.Security.Cryptography.Pkcs/Rfc3161TimestampRequest.xml
+++ b/xml/System.Security.Cryptography.Pkcs/Rfc3161TimestampRequest.xml
@@ -277,12 +277,6 @@ The normalized value is returned by the <xref:System.Security.Cryptography.Pkcs.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Pkcs.Rfc3161TimestampRequest</ReturnType>
       </ReturnValue>
@@ -366,12 +360,6 @@ The normalized value is returned by the <xref:System.Security.Cryptography.Pkcs.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -402,12 +390,6 @@ The normalized value is returned by the <xref:System.Security.Cryptography.Pkcs.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509ExtensionCollection</ReturnType>
       </ReturnValue>
@@ -537,10 +519,6 @@ To avoid the object creation in this common scenario, read <xref:System.Security
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Oid</ReturnType>
@@ -619,10 +597,6 @@ a <xref:System.Security.Cryptography.CryptographicException> is thrown.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Oid</ReturnType>
diff --git a/xml/System.Security.Cryptography.Pkcs/Rfc3161TimestampToken.xml b/xml/System.Security.Cryptography.Pkcs/Rfc3161TimestampToken.xml
index d4eeb6c04f4..0c8a291de2c 100644
--- a/xml/System.Security.Cryptography.Pkcs/Rfc3161TimestampToken.xml
+++ b/xml/System.Security.Cryptography.Pkcs/Rfc3161TimestampToken.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a time-stamp token from IETF RFC 3161.</summary>
@@ -54,12 +50,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Pkcs.SignedCms</ReturnType>
       </ReturnValue>
@@ -104,10 +94,6 @@ The value from calling <xref:System.Security.Cryptography.Pkcs.SignedCms.Encode?
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Pkcs.Rfc3161TimestampTokenInfo</ReturnType>
@@ -137,12 +123,6 @@ The value from calling <xref:System.Security.Cryptography.Pkcs.SignedCms.Encode?
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Pkcs/Rfc3161TimestampTokenInfo.xml b/xml/System.Security.Cryptography.Pkcs/Rfc3161TimestampTokenInfo.xml
index 37f298149be..a5aecb7a8a7 100644
--- a/xml/System.Security.Cryptography.Pkcs/Rfc3161TimestampTokenInfo.xml
+++ b/xml/System.Security.Cryptography.Pkcs/Rfc3161TimestampTokenInfo.xml
@@ -147,12 +147,6 @@ If `hashAlgorithmId`, `messageHash`, `policyId`, or `nonce` are present in the <
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -181,12 +175,6 @@ If `hashAlgorithmId`, `messageHash`, `policyId`, or `nonce` are present in the <
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509ExtensionCollection</ReturnType>
       </ReturnValue>
@@ -370,10 +358,6 @@ The actual identification of the entity that signed the response
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Oid</ReturnType>
@@ -435,10 +419,6 @@ The actual identification of the entity that signed the response
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Oid</ReturnType>
diff --git a/xml/System.Security.Cryptography.Pkcs/SignedCms.xml b/xml/System.Security.Cryptography.Pkcs/SignedCms.xml
index 687215407a3..61d2459aa55 100644
--- a/xml/System.Security.Cryptography.Pkcs/SignedCms.xml
+++ b/xml/System.Security.Cryptography.Pkcs/SignedCms.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.SignedCms" /> class enables signing and verifying of CMS/PKCS #7 messages.</summary>
@@ -890,12 +886,6 @@ The following permissions are required to access the signature key on .NET Frame
       <AssemblyInfo>
         <AssemblyName>System.Security</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Pkcs/SignerInfo.xml b/xml/System.Security.Cryptography.Pkcs/SignerInfo.xml
index 1bfd4e9dc9b..fe3b29bf93f 100644
--- a/xml/System.Security.Cryptography.Pkcs/SignerInfo.xml
+++ b/xml/System.Security.Cryptography.Pkcs/SignerInfo.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.SignerInfo" /> class represents a signer associated with a <see cref="T:System.Security.Cryptography.Pkcs.SignedCms" /> object that represents a CMS/PKCS #7 message.</summary>
@@ -137,10 +133,6 @@ ASN1 corrupted data.</exception>
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509Certificate2</ReturnType>
diff --git a/xml/System.Security.Cryptography.Pkcs/SignerInfoCollection.xml b/xml/System.Security.Cryptography.Pkcs/SignerInfoCollection.xml
index f9fe26fa370..b36960bdb2c 100644
--- a/xml/System.Security.Cryptography.Pkcs/SignerInfoCollection.xml
+++ b/xml/System.Security.Cryptography.Pkcs/SignerInfoCollection.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.SignerInfoCollection" /> class represents a collection of <see cref="T:System.Security.Cryptography.Pkcs.SignerInfo" /> objects. <see cref="T:System.Security.Cryptography.Pkcs.SignerInfoCollection" /> implements the <see cref="T:System.Collections.ICollection" /> interface.</summary>
diff --git a/xml/System.Security.Cryptography.Pkcs/SignerInfoEnumerator.xml b/xml/System.Security.Cryptography.Pkcs/SignerInfoEnumerator.xml
index e0778424cdf..099b78f5c1d 100644
--- a/xml/System.Security.Cryptography.Pkcs/SignerInfoEnumerator.xml
+++ b/xml/System.Security.Cryptography.Pkcs/SignerInfoEnumerator.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.SignerInfoEnumerator" /> class provides enumeration functionality for the <see cref="T:System.Security.Cryptography.Pkcs.SignerInfoCollection" /> collection. <see cref="T:System.Security.Cryptography.Pkcs.SignerInfoEnumerator" /> implements the <see cref="T:System.Collections.IEnumerator" /> interface.</summary>
diff --git a/xml/System.Security.Cryptography.Pkcs/SubjectIdentifier.xml b/xml/System.Security.Cryptography.Pkcs/SubjectIdentifier.xml
index aabe8578b62..2fa89c758cc 100644
--- a/xml/System.Security.Cryptography.Pkcs/SubjectIdentifier.xml
+++ b/xml/System.Security.Cryptography.Pkcs/SubjectIdentifier.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.SubjectIdentifier" /> class defines the type of the identifier of a subject, such as a <see cref="T:System.Security.Cryptography.Pkcs.CmsSigner" /> or a <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipient" />.  The subject can be identified by the certificate issuer and serial number or the subject key.</summary>
@@ -67,12 +63,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Security</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Pkcs/SubjectIdentifierOrKey.xml b/xml/System.Security.Cryptography.Pkcs/SubjectIdentifierOrKey.xml
index dfc8daf5cb6..e4288a1a2cc 100644
--- a/xml/System.Security.Cryptography.Pkcs/SubjectIdentifierOrKey.xml
+++ b/xml/System.Security.Cryptography.Pkcs/SubjectIdentifierOrKey.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Security.Cryptography.Pkcs.SubjectIdentifierOrKey" /> class defines the type of the identifier of a subject, such as a <see cref="T:System.Security.Cryptography.Pkcs.CmsSigner" /> or a <see cref="T:System.Security.Cryptography.Pkcs.CmsRecipient" />.  The subject can be identified by the certificate issuer and serial number, the hash of the subject key, or the subject key.</summary>
diff --git a/xml/System.Security.Cryptography.X509Certificates/CertificateRequest.xml b/xml/System.Security.Cryptography.X509Certificates/CertificateRequest.xml
index 75fff605c6c..27566f3c976 100644
--- a/xml/System.Security.Cryptography.X509Certificates/CertificateRequest.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/CertificateRequest.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an abstraction over the PKCS#10 CertificationRequestInfo and the X.509 TbsCertificate.</summary>
@@ -1167,12 +1163,6 @@ This object was created with a constructor which did not accept a signing key.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.CertificateRequest</ReturnType>
       </ReturnValue>
@@ -1233,12 +1223,6 @@ This object was created with a constructor which did not accept a signing key.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.CertificateRequest</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.X509Certificates/CertificateRevocationListBuilder.xml b/xml/System.Security.Cryptography.X509Certificates/CertificateRevocationListBuilder.xml
index c7b8cc92bf8..95659cb280e 100644
--- a/xml/System.Security.Cryptography.X509Certificates/CertificateRevocationListBuilder.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/CertificateRevocationListBuilder.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Facilitates building a Certificate Revocation List (CRL).</summary>
@@ -99,12 +95,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -418,12 +408,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.CertificateRevocationListBuilder</ReturnType>
       </ReturnValue>
@@ -458,12 +442,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.CertificateRevocationListBuilder</ReturnType>
       </ReturnValue>
@@ -572,12 +550,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.X509Certificates/DSACertificateExtensions.xml b/xml/System.Security.Cryptography.X509Certificates/DSACertificateExtensions.xml
index 64e7e062330..40c7e032c92 100644
--- a/xml/System.Security.Cryptography.X509Certificates/DSACertificateExtensions.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/DSACertificateExtensions.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides extension methods for retrieving <see cref="T:System.Security.Cryptography.DSA" /> implementations for the public and private keys of an <see cref="T:System.Security.Cryptography.X509Certificates.X509Certificate2" />.</summary>
diff --git a/xml/System.Security.Cryptography.X509Certificates/ECDsaCertificateExtensions.xml b/xml/System.Security.Cryptography.X509Certificates/ECDsaCertificateExtensions.xml
index 1b33383ba7b..59edbad3c42 100644
--- a/xml/System.Security.Cryptography.X509Certificates/ECDsaCertificateExtensions.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/ECDsaCertificateExtensions.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides extension methods for retrieving <see cref="T:System.Security.Cryptography.ECDsa" /> implementations for the     public and private keys of a <see cref="T:System.Security.Cryptography.X509Certificates.X509Certificate2" /> certificate.</summary>
diff --git a/xml/System.Security.Cryptography.X509Certificates/Pkcs12LoadLimitExceededException.xml b/xml/System.Security.Cryptography.X509Certificates/Pkcs12LoadLimitExceededException.xml
index 4ffb3af0123..a29f631d3fd 100644
--- a/xml/System.Security.Cryptography.X509Certificates/Pkcs12LoadLimitExceededException.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/Pkcs12LoadLimitExceededException.xml
@@ -44,12 +44,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="propertyName" Type="System.String" />
       </Parameters>
diff --git a/xml/System.Security.Cryptography.X509Certificates/Pkcs12LoaderLimits.xml b/xml/System.Security.Cryptography.X509Certificates/Pkcs12LoaderLimits.xml
index 03ee941cbd5..7f0154bbc35 100644
--- a/xml/System.Security.Cryptography.X509Certificates/Pkcs12LoaderLimits.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/Pkcs12LoaderLimits.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/System.Security.Cryptography.X509Certificates/PublicKey.xml b/xml/System.Security.Cryptography.X509Certificates/PublicKey.xml
index 3848df34be1..a9d8055f55a 100644
--- a/xml/System.Security.Cryptography.X509Certificates/PublicKey.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/PublicKey.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a certificate's public key information. This class cannot be inherited.</summary>
@@ -185,12 +181,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.PublicKey</ReturnType>
       </ReturnValue>
@@ -383,10 +373,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.DSA</ReturnType>
@@ -425,10 +411,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.ECDiffieHellman</ReturnType>
@@ -467,10 +449,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.ECDsa</ReturnType>
@@ -509,10 +487,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.RSA</ReturnType>
@@ -671,12 +645,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.X509Certificates/RSACertificateExtensions.xml b/xml/System.Security.Cryptography.X509Certificates/RSACertificateExtensions.xml
index 2ef470aabb2..04493bc974b 100644
--- a/xml/System.Security.Cryptography.X509Certificates/RSACertificateExtensions.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/RSACertificateExtensions.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides extension methods for retrieving <see cref="T:System.Security.Cryptography.RSA" /> implementations for the public and private keys of an <see cref="T:System.Security.Cryptography.X509Certificates.X509Certificate2" />.</summary>
diff --git a/xml/System.Security.Cryptography.X509Certificates/SubjectAlternativeNameBuilder.xml b/xml/System.Security.Cryptography.X509Certificates/SubjectAlternativeNameBuilder.xml
index 24467a5abe3..f962e343b93 100644
--- a/xml/System.Security.Cryptography.X509Certificates/SubjectAlternativeNameBuilder.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/SubjectAlternativeNameBuilder.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This class facilitates building a subject alternative name extension for an X.509 certificate.</summary>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X500DistinguishedName.xml b/xml/System.Security.Cryptography.X509Certificates/X500DistinguishedName.xml
index b747d88f07e..0a50394c09d 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X500DistinguishedName.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X500DistinguishedName.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the distinguished name of an X509 certificate. This class cannot be inherited.</summary>
@@ -186,12 +182,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="encodedDistinguishedName" Type="System.ReadOnlySpan&lt;System.Byte&gt;" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0" />
       </Parameters>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X500DistinguishedNameBuilder.xml b/xml/System.Security.Cryptography.X509Certificates/X500DistinguishedNameBuilder.xml
index 7986e6a8c18..cc3ee529088 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X500DistinguishedNameBuilder.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X500DistinguishedNameBuilder.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Facilitates building a distinguished name for an X.509 certificate.</summary>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X500RelativeDistinguishedName.xml b/xml/System.Security.Cryptography.X509Certificates/X500RelativeDistinguishedName.xml
index 556716da538..f166769e2c3 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X500RelativeDistinguishedName.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X500RelativeDistinguishedName.xml
@@ -34,12 +34,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Oid</ReturnType>
       </ReturnValue>
@@ -66,12 +60,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509AuthorityInformationAccessExtension.xml b/xml/System.Security.Cryptography.X509Certificates/X509AuthorityInformationAccessExtension.xml
index aebbb74af9b..6e558fc2d2b 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509AuthorityInformationAccessExtension.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509AuthorityInformationAccessExtension.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the Authority Information Access X.509 Extension (1.3.6.1.5.5.7.1.1).</summary>
@@ -91,12 +87,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="rawData" Type="System.ReadOnlySpan&lt;System.Byte&gt;" />
         <Parameter Name="critical" Type="System.Boolean" />
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509AuthorityKeyIdentifierExtension.xml b/xml/System.Security.Cryptography.X509Certificates/X509AuthorityKeyIdentifierExtension.xml
index ec81a2632ee..430841b2136 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509AuthorityKeyIdentifierExtension.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509AuthorityKeyIdentifierExtension.xml
@@ -52,12 +52,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="rawData" Type="System.Byte[]" />
         <Parameter Name="critical" Type="System.Boolean" />
@@ -115,12 +109,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -148,12 +136,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509AuthorityKeyIdentifierExtension</ReturnType>
       </ReturnValue>
@@ -234,12 +216,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509AuthorityKeyIdentifierExtension</ReturnType>
       </ReturnValue>
@@ -278,12 +254,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509AuthorityKeyIdentifierExtension</ReturnType>
       </ReturnValue>
@@ -318,12 +288,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509AuthorityKeyIdentifierExtension</ReturnType>
       </ReturnValue>
@@ -365,12 +329,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509AuthorityKeyIdentifierExtension</ReturnType>
       </ReturnValue>
@@ -427,12 +385,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509AuthorityKeyIdentifierExtension</ReturnType>
       </ReturnValue>
@@ -490,10 +442,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X500DistinguishedName</ReturnType>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509BasicConstraintsExtension.xml b/xml/System.Security.Cryptography.X509Certificates/X509BasicConstraintsExtension.xml
index cc2cfd79497..3a33e059fe2 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509BasicConstraintsExtension.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509BasicConstraintsExtension.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the constraints set on a certificate. This class cannot be inherited.</summary>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509Certificate.xml b/xml/System.Security.Cryptography.X509Certificates/X509Certificate.xml
index 7512f8b9698..ec6f80cbd3f 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509Certificate.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509Certificate.xml
@@ -80,10 +80,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -1611,10 +1607,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -1696,10 +1688,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -3949,10 +3937,6 @@ The output of this method is equivalent to the output of the <xref:System.Securi
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlyMemory&lt;System.Byte&gt;</ReturnType>
@@ -4280,12 +4264,6 @@ The output of this method is equivalent to the output of the <xref:System.Securi
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509Certificate2.xml b/xml/System.Security.Cryptography.X509Certificates/X509Certificate2.xml
index f89a65ba82b..b73ea22ecac 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509Certificate2.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509Certificate2.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -338,10 +334,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="net-9.0">
           <AttributeName Language="C#">[System.Obsolete("Loading certificate data through the constructor or Import is obsolete. Use X509CertificateLoader instead to load certificates.", DiagnosticId="SYSLIB0057", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Loading certificate data through the constructor or Import is obsolete. Use X509CertificateLoader instead to load certificates.", DiagnosticId="SYSLIB0057", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
@@ -1077,10 +1069,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="net-9.0">
           <AttributeName Language="C#">[System.Obsolete("Loading certificate data through the constructor or Import is obsolete. Use X509CertificateLoader instead to load certificates.", DiagnosticId="SYSLIB0057", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Loading certificate data through the constructor or Import is obsolete. Use X509CertificateLoader instead to load certificates.", DiagnosticId="SYSLIB0057", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
@@ -1126,10 +1114,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="net-9.0">
           <AttributeName Language="C#">[System.Obsolete("Loading certificate data through the constructor or Import is obsolete. Use X509CertificateLoader instead to load certificates.", DiagnosticId="SYSLIB0057", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Loading certificate data through the constructor or Import is obsolete. Use X509CertificateLoader instead to load certificates.", DiagnosticId="SYSLIB0057", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
@@ -1479,10 +1463,6 @@ The specified private key doesn't match the public key for this certificate.</ex
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509Certificate2</ReturnType>
@@ -1654,10 +1634,6 @@ The password specified for the private key is incorrect.</exception>
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509Certificate2</ReturnType>
@@ -1711,10 +1687,6 @@ For PEM-encoded certificates in a file, use <xref:System.Security.Cryptography.X
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509Certificate2</ReturnType>
@@ -2133,10 +2105,6 @@ The certificate is encoded according to the IETF RFC 7468 "strict"
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509ContentType</ReturnType>
@@ -2235,12 +2203,6 @@ The certificate is encoded according to the IETF RFC 7468 "strict"
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.ECDiffieHellman</ReturnType>
       </ReturnValue>
@@ -2273,12 +2235,6 @@ The certificate is encoded according to the IETF RFC 7468 "strict"
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.ECDiffieHellman</ReturnType>
       </ReturnValue>
@@ -3162,14 +3118,6 @@ The Subject Alternative Name extension or Subject Name could not be decoded.</ex
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.AsymmetricAlgorithm</ReturnType>
@@ -3351,10 +3299,6 @@ The Subject Alternative Name extension or Subject Name could not be decoded.</ex
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlyMemory&lt;System.Byte&gt;</ReturnType>
@@ -3829,12 +3773,6 @@ Unlike <xref:System.Security.Cryptography.X509Certificates.X509Certificate2.RawD
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509Certificate2Collection.xml b/xml/System.Security.Cryptography.X509Certificates/X509Certificate2Collection.xml
index 7a53949385b..a0f9f28f18a 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509Certificate2Collection.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509Certificate2Collection.xml
@@ -64,10 +64,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Security.Cryptography.X509Certificates.X509Certificate2" /> objects. This class cannot be inherited.</summary>
@@ -614,10 +610,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -679,12 +671,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1044,10 +1030,6 @@
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="net-9.0">
           <AttributeName Language="C#">[System.Obsolete("Loading certificate data through the constructor or Import is obsolete. Use X509CertificateLoader instead to load certificates.", DiagnosticId="SYSLIB0057", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Loading certificate data through the constructor or Import is obsolete. Use X509CertificateLoader instead to load certificates.", DiagnosticId="SYSLIB0057", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
@@ -1248,10 +1230,6 @@
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="net-9.0">
           <AttributeName Language="C#">[System.Obsolete("Loading certificate data through the constructor or Import is obsolete. Use X509CertificateLoader instead to load certificates.", DiagnosticId="SYSLIB0057", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Loading certificate data through the constructor or Import is obsolete. Use X509CertificateLoader instead to load certificates.", DiagnosticId="SYSLIB0057", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
@@ -1295,10 +1273,6 @@
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="net-9.0">
           <AttributeName Language="C#">[System.Obsolete("Loading certificate data through the constructor or Import is obsolete. Use X509CertificateLoader instead to load certificates.", DiagnosticId="SYSLIB0057", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Loading certificate data through the constructor or Import is obsolete. Use X509CertificateLoader instead to load certificates.", DiagnosticId="SYSLIB0057", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
@@ -1349,10 +1323,6 @@
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="net-9.0">
           <AttributeName Language="C#">[System.Obsolete("Loading certificate data through the constructor or Import is obsolete. Use X509CertificateLoader instead to load certificates.", DiagnosticId="SYSLIB0057", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Loading certificate data through the constructor or Import is obsolete. Use X509CertificateLoader instead to load certificates.", DiagnosticId="SYSLIB0057", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
@@ -1492,12 +1462,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1947,12 +1911,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2016,10 +1974,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("tvos")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("tvos")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509Certificate2Enumerator.xml b/xml/System.Security.Cryptography.X509Certificates/X509Certificate2Enumerator.xml
index 6bda09a3177..d0ee28664ed 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509Certificate2Enumerator.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509Certificate2Enumerator.xml
@@ -121,10 +121,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509Certificate2</ReturnType>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509Certificate2UI.xml b/xml/System.Security.Cryptography.X509Certificates/X509Certificate2UI.xml
index f40f507e1b1..ff6bf2caf44 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509Certificate2UI.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509Certificate2UI.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Displays user interface dialogs that allow you to select and view X.509 certificates. This class cannot be inherited.</summary>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509CertificateCollection.xml b/xml/System.Security.Cryptography.X509Certificates/X509CertificateCollection.xml
index 056b2a28fb8..596182a17f2 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509CertificateCollection.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509CertificateCollection.xml
@@ -70,10 +70,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509CertificateLoader.xml b/xml/System.Security.Cryptography.X509Certificates/X509CertificateLoader.xml
index a02eba108d2..6573cee03e6 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509CertificateLoader.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509CertificateLoader.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-8.0;net-9.0">
       <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
@@ -98,12 +94,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509Certificate2</ReturnType>
         <Attributes>
@@ -279,12 +269,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509Certificate2</ReturnType>
         <Attributes>
@@ -442,12 +426,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509Certificate2Collection</ReturnType>
         <Attributes>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509Chain.xml b/xml/System.Security.Cryptography.X509Certificates/X509Chain.xml
index ceb19daa278..a249d09bcdb 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509Chain.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509Chain.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a chain-building engine for <see cref="T:System.Security.Cryptography.X509Certificates.X509Certificate2" /> certificates.</summary>
@@ -869,10 +865,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[get: System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509ChainElement.xml b/xml/System.Security.Cryptography.X509Certificates/X509ChainElement.xml
index 17c43595c10..430a25a23fc 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509ChainElement.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509ChainElement.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an element of an X.509 chain.</summary>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509ChainElementCollection.xml b/xml/System.Security.Cryptography.X509Certificates/X509ChainElementCollection.xml
index f531c1ed716..a153b78b225 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509ChainElementCollection.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509ChainElementCollection.xml
@@ -67,10 +67,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Security.Cryptography.X509Certificates.X509ChainElement" /> objects. This class cannot be inherited.</summary>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509ChainElementEnumerator.xml b/xml/System.Security.Cryptography.X509Certificates/X509ChainElementEnumerator.xml
index fe53ebc1156..33c53141951 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509ChainElementEnumerator.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509ChainElementEnumerator.xml
@@ -121,10 +121,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509ChainElement</ReturnType>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509ChainPolicy.xml b/xml/System.Security.Cryptography.X509Certificates/X509ChainPolicy.xml
index d4041cd501e..eb3b17246fb 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509ChainPolicy.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509ChainPolicy.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the chain policy to be applied when building an X509 certificate chain. This class cannot be inherited.</summary>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509ChainStatus.xml b/xml/System.Security.Cryptography.X509Certificates/X509ChainStatus.xml
index 7bfc05b84ce..40eca39b490 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509ChainStatus.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509ChainStatus.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a simple structure for storing X509 chain status and error information.</summary>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509EnhancedKeyUsageExtension.xml b/xml/System.Security.Cryptography.X509Certificates/X509EnhancedKeyUsageExtension.xml
index e90ca91a0b7..21466e1f313 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509EnhancedKeyUsageExtension.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509EnhancedKeyUsageExtension.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the collection of object identifiers (OIDs) that indicates the applications that use the key. This class cannot be inherited.</summary>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509Extension.xml b/xml/System.Security.Cryptography.X509Certificates/X509Extension.xml
index c099f065a06..78ec6acd21a 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509Extension.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509Extension.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an X509 extension.</summary>
@@ -317,12 +313,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="oid" Type="System.Security.Cryptography.Oid" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0">
           <Attributes>
@@ -431,12 +421,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="oid" Type="System.String" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0">
           <Attributes>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509ExtensionCollection.xml b/xml/System.Security.Cryptography.X509Certificates/X509ExtensionCollection.xml
index 02ec291c5dd..140ad1f1d55 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509ExtensionCollection.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509ExtensionCollection.xml
@@ -67,10 +67,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Security.Cryptography.X509Certificates.X509Extension" /> objects. This class cannot be inherited.</summary>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509ExtensionEnumerator.xml b/xml/System.Security.Cryptography.X509Certificates/X509ExtensionEnumerator.xml
index 6840fe809a2..a0a0f8f4e52 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509ExtensionEnumerator.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509ExtensionEnumerator.xml
@@ -121,10 +121,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.X509Certificates.X509Extension</ReturnType>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509KeyUsageExtension.xml b/xml/System.Security.Cryptography.X509Certificates/X509KeyUsageExtension.xml
index 0a58c2b4b7b..bb2054ca770 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509KeyUsageExtension.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509KeyUsageExtension.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the usage of a key contained within an X.509 certificate.  This class cannot be inherited.</summary>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509SignatureGenerator.xml b/xml/System.Security.Cryptography.X509Certificates/X509SignatureGenerator.xml
index 3cc1dbf4530..e115939381d 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509SignatureGenerator.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509SignatureGenerator.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Base class for building encoded signatures as needed for X.509 certificates.</summary>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509Store.xml b/xml/System.Security.Cryptography.X509Certificates/X509Store.xml
index 4ab6057da8f..789d184a1fd 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509Store.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509Store.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an X.509 store, which is a physical store where certificates are persisted and managed. This class cannot be inherited.</summary>
@@ -1114,10 +1110,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509SubjectAlternativeNameExtension.xml b/xml/System.Security.Cryptography.X509Certificates/X509SubjectAlternativeNameExtension.xml
index 95c5f3ef469..e82997e23c4 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509SubjectAlternativeNameExtension.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509SubjectAlternativeNameExtension.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the Subject Alternative Name X.509 Extension (2.5.29.17).</summary>
@@ -91,12 +87,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="rawData" Type="System.ReadOnlySpan&lt;System.Byte&gt;" />
         <Parameter Name="critical" Type="System.Boolean" />
diff --git a/xml/System.Security.Cryptography.X509Certificates/X509SubjectKeyIdentifierExtension.xml b/xml/System.Security.Cryptography.X509Certificates/X509SubjectKeyIdentifierExtension.xml
index 3a73b9da787..a06d8fed856 100644
--- a/xml/System.Security.Cryptography.X509Certificates/X509SubjectKeyIdentifierExtension.xml
+++ b/xml/System.Security.Cryptography.X509Certificates/X509SubjectKeyIdentifierExtension.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines a string that identifies a certificate's subject key identifier (SKI). This class cannot be inherited.</summary>
@@ -209,12 +205,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="subjectKeyIdentifier" Type="System.ReadOnlySpan&lt;System.Byte&gt;" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0" />
         <Parameter Name="critical" Type="System.Boolean" Index="1" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0" />
@@ -519,10 +509,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -566,10 +552,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlyMemory&lt;System.Byte&gt;</ReturnType>
diff --git a/xml/System.Security.Cryptography.Xml/CipherData.xml b/xml/System.Security.Cryptography.Xml/CipherData.xml
index 11c16a7efcb..df8eb701c5c 100644
--- a/xml/System.Security.Cryptography.Xml/CipherData.xml
+++ b/xml/System.Security.Cryptography.Xml/CipherData.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="&lt;CipherData&gt;" /> element in XML encryption. This class cannot be inherited.</summary>
@@ -140,12 +136,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="cipherValue" Type="System.Byte[]" />
       </Parameters>
@@ -199,12 +189,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="cipherReference" Type="System.Security.Cryptography.Xml.CipherReference" />
       </Parameters>
@@ -366,12 +350,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlElement</ReturnType>
       </ReturnValue>
@@ -431,10 +409,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("XmlDsigXsltTransform uses XslCompiledTransform which requires dynamic code.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("XmlDsigXsltTransform uses XslCompiledTransform which requires dynamic code.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Security.Cryptography.Xml/CipherReference.xml b/xml/System.Security.Cryptography.Xml/CipherReference.xml
index 9395f87017e..cc072f9d40d 100644
--- a/xml/System.Security.Cryptography.Xml/CipherReference.xml
+++ b/xml/System.Security.Cryptography.Xml/CipherReference.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="&lt;CipherReference&gt;" /> element in XML encryption. This class cannot be inherited.</summary>
diff --git a/xml/System.Security.Cryptography.Xml/CryptoSignedXmlRecursionException.xml b/xml/System.Security.Cryptography.Xml/CryptoSignedXmlRecursionException.xml
index 840458a26db..015e61b10de 100644
--- a/xml/System.Security.Cryptography.Xml/CryptoSignedXmlRecursionException.xml
+++ b/xml/System.Security.Cryptography.Xml/CryptoSignedXmlRecursionException.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The exception that's thrown when the signed XML recursion limit is reached.
diff --git a/xml/System.Security.Cryptography.Xml/DSAKeyValue.xml b/xml/System.Security.Cryptography.Xml/DSAKeyValue.xml
index c3303644076..5f470cc4dbd 100644
--- a/xml/System.Security.Cryptography.Xml/DSAKeyValue.xml
+++ b/xml/System.Security.Cryptography.Xml/DSAKeyValue.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see cref="T:System.Security.Cryptography.DSA" /> private key of the <see langword="&lt;KeyInfo&gt;" /> element.</summary>
diff --git a/xml/System.Security.Cryptography.Xml/DataObject.xml b/xml/System.Security.Cryptography.Xml/DataObject.xml
index cfc64a8ee7b..609ff01dee1 100644
--- a/xml/System.Security.Cryptography.Xml/DataObject.xml
+++ b/xml/System.Security.Cryptography.Xml/DataObject.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the object element of an XML signature that holds data to be signed.</summary>
@@ -152,12 +148,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="id" Type="System.String" />
         <Parameter Name="mimeType" Type="System.String" />
@@ -210,14 +200,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNodeList</ReturnType>
@@ -316,12 +298,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlElement</ReturnType>
       </ReturnValue>
@@ -419,12 +395,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Xml/DataReference.xml b/xml/System.Security.Cryptography.Xml/DataReference.xml
index d81175ae7e2..84057da4b54 100644
--- a/xml/System.Security.Cryptography.Xml/DataReference.xml
+++ b/xml/System.Security.Cryptography.Xml/DataReference.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="&lt;DataReference&gt;" /> element used in XML encryption. This class cannot be inherited.</summary>
diff --git a/xml/System.Security.Cryptography.Xml/EncryptedData.xml b/xml/System.Security.Cryptography.Xml/EncryptedData.xml
index a19eab2c90f..37ac4aa964d 100644
--- a/xml/System.Security.Cryptography.Xml/EncryptedData.xml
+++ b/xml/System.Security.Cryptography.Xml/EncryptedData.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="&lt;EncryptedData&gt;" /> element in XML encryption. This class cannot be inherited.</summary>
diff --git a/xml/System.Security.Cryptography.Xml/EncryptedKey.xml b/xml/System.Security.Cryptography.Xml/EncryptedKey.xml
index 587b407f3ba..018e2f9a6c8 100644
--- a/xml/System.Security.Cryptography.Xml/EncryptedKey.xml
+++ b/xml/System.Security.Cryptography.Xml/EncryptedKey.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="&lt;EncryptedKey&gt;" /> element in XML encryption. This class cannot be inherited.</summary>
@@ -225,14 +221,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Security.Cryptography.Xml/EncryptedReference.xml b/xml/System.Security.Cryptography.Xml/EncryptedReference.xml
index 930b1f6e0bf..a9041de094a 100644
--- a/xml/System.Security.Cryptography.Xml/EncryptedReference.xml
+++ b/xml/System.Security.Cryptography.Xml/EncryptedReference.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the abstract base class used in XML encryption from which the <see cref="T:System.Security.Cryptography.Xml.CipherReference" />, <see cref="T:System.Security.Cryptography.Xml.KeyReference" />, and <see cref="T:System.Security.Cryptography.Xml.DataReference" /> classes derive.</summary>
@@ -403,14 +399,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Security.Cryptography.Xml/EncryptedType.xml b/xml/System.Security.Cryptography.Xml/EncryptedType.xml
index aac2b511479..2a304a00d94 100644
--- a/xml/System.Security.Cryptography.Xml/EncryptedType.xml
+++ b/xml/System.Security.Cryptography.Xml/EncryptedType.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the abstract base class from which the classes <see cref="T:System.Security.Cryptography.Xml.EncryptedData" /> and <see cref="T:System.Security.Cryptography.Xml.EncryptedKey" /> derive.</summary>
@@ -126,12 +122,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -179,14 +169,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Xml.CipherData</ReturnType>
@@ -339,10 +321,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Xml.EncryptionPropertyCollection</ReturnType>
@@ -391,12 +369,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlElement</ReturnType>
       </ReturnValue>
@@ -490,14 +462,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Xml.KeyInfo</ReturnType>
@@ -555,10 +519,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("XmlDsigXsltTransform uses XslCompiledTransform which requires dynamic code.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("XmlDsigXsltTransform uses XslCompiledTransform which requires dynamic code.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Security.Cryptography.Xml/EncryptedXml.xml b/xml/System.Security.Cryptography.Xml/EncryptedXml.xml
index 1f44b3059af..4f89c18aba7 100644
--- a/xml/System.Security.Cryptography.Xml/EncryptedXml.xml
+++ b/xml/System.Security.Cryptography.Xml/EncryptedXml.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the process model for implementing XML encryption.</summary>
@@ -778,14 +774,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Policy.Evidence</ReturnType>
@@ -1422,10 +1410,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.UnconditionalSuppressMessage("ILLink", "IL2026:RequiresUnreferencedCode", Justification="ctors are marked as RUC")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.UnconditionalSuppressMessage("ILLink", "IL2026:RequiresUnreferencedCode", Justification="ctors are marked as RUC")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.SymmetricAlgorithm</ReturnType>
@@ -1775,14 +1759,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlResolver</ReturnType>
diff --git a/xml/System.Security.Cryptography.Xml/EncryptionMethod.xml b/xml/System.Security.Cryptography.Xml/EncryptionMethod.xml
index 8988874eacf..479c2627233 100644
--- a/xml/System.Security.Cryptography.Xml/EncryptionMethod.xml
+++ b/xml/System.Security.Cryptography.Xml/EncryptionMethod.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates the encryption algorithm used for XML encryption.</summary>
@@ -193,12 +189,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlElement</ReturnType>
       </ReturnValue>
@@ -321,12 +311,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Xml/EncryptionProperty.xml b/xml/System.Security.Cryptography.Xml/EncryptionProperty.xml
index 8d75f1e48b8..871e1eeace8 100644
--- a/xml/System.Security.Cryptography.Xml/EncryptionProperty.xml
+++ b/xml/System.Security.Cryptography.Xml/EncryptionProperty.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="&lt;EncryptionProperty&gt;" /> element used in XML encryption. This class cannot be inherited.</summary>
@@ -120,12 +116,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="elementProperty" Type="System.Xml.XmlElement" />
       </Parameters>
@@ -174,12 +164,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlElement</ReturnType>
       </ReturnValue>
@@ -268,12 +252,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Xml/EncryptionPropertyCollection.xml b/xml/System.Security.Cryptography.Xml/EncryptionPropertyCollection.xml
index 6090e3de58e..aeb797b99aa 100644
--- a/xml/System.Security.Cryptography.Xml/EncryptionPropertyCollection.xml
+++ b/xml/System.Security.Cryptography.Xml/EncryptionPropertyCollection.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Security.Cryptography.Xml.EncryptionProperty" /> classes used in XML encryption. This class cannot be inherited.</summary>
diff --git a/xml/System.Security.Cryptography.Xml/IRelDecryptor.xml b/xml/System.Security.Cryptography.Xml/IRelDecryptor.xml
index ffd184c9f18..ee81fd85e65 100644
--- a/xml/System.Security.Cryptography.Xml/IRelDecryptor.xml
+++ b/xml/System.Security.Cryptography.Xml/IRelDecryptor.xml
@@ -26,12 +26,6 @@
     <TypeForwarding From="System.Security.Cryptography.Xml" FromVersion="9.0.0.0" To="System.Security" ToVersion="4.0.0.0" FrameworkAlternate="netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Defines methods that decrypt an XrML <see langword="&lt;encryptedGrant&gt;" /> element.</summary>
     <remarks>
diff --git a/xml/System.Security.Cryptography.Xml/KeyInfo.xml b/xml/System.Security.Cryptography.Xml/KeyInfo.xml
index 438a8fcb5c5..cb7f1870ea2 100644
--- a/xml/System.Security.Cryptography.Xml/KeyInfo.xml
+++ b/xml/System.Security.Cryptography.Xml/KeyInfo.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an XML digital signature or XML encryption <see langword="&lt;KeyInfo&gt;" /> element.</summary>
@@ -407,14 +403,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Security.Cryptography.Xml/KeyInfoClause.xml b/xml/System.Security.Cryptography.Xml/KeyInfoClause.xml
index 586f40b5ea9..bdd7e275e30 100644
--- a/xml/System.Security.Cryptography.Xml/KeyInfoClause.xml
+++ b/xml/System.Security.Cryptography.Xml/KeyInfoClause.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the abstract base class from which all implementations of <see cref="T:System.Security.Cryptography.Xml.KeyInfo" /> subelements inherit.</summary>
diff --git a/xml/System.Security.Cryptography.Xml/KeyInfoEncryptedKey.xml b/xml/System.Security.Cryptography.Xml/KeyInfoEncryptedKey.xml
index 46394d74b58..cd52a4c5a90 100644
--- a/xml/System.Security.Cryptography.Xml/KeyInfoEncryptedKey.xml
+++ b/xml/System.Security.Cryptography.Xml/KeyInfoEncryptedKey.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Wraps the <see cref="T:System.Security.Cryptography.Xml.EncryptedKey" /> class, it to be placed as a subelement of the <see cref="T:System.Security.Cryptography.Xml.KeyInfo" /> class.</summary>
@@ -195,14 +191,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Xml.EncryptedKey</ReturnType>
diff --git a/xml/System.Security.Cryptography.Xml/KeyInfoName.xml b/xml/System.Security.Cryptography.Xml/KeyInfoName.xml
index 3ed408f12e5..c83c78dca1b 100644
--- a/xml/System.Security.Cryptography.Xml/KeyInfoName.xml
+++ b/xml/System.Security.Cryptography.Xml/KeyInfoName.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a <see langword="&lt;KeyName&gt;" /> subelement of an XMLDSIG or XML Encryption <see langword="&lt;KeyInfo&gt;" /> element.</summary>
@@ -213,12 +209,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlElement</ReturnType>
       </ReturnValue>
@@ -260,12 +250,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Xml/KeyInfoNode.xml b/xml/System.Security.Cryptography.Xml/KeyInfoNode.xml
index 5b369119d82..8c7d0503b53 100644
--- a/xml/System.Security.Cryptography.Xml/KeyInfoNode.xml
+++ b/xml/System.Security.Cryptography.Xml/KeyInfoNode.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Handles <see cref="T:System.Security.Cryptography.Xml.KeyInfo" /> subelements that do not have specific implementations or handlers registered on the machine.</summary>
@@ -231,14 +227,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlElement</ReturnType>
diff --git a/xml/System.Security.Cryptography.Xml/KeyInfoRetrievalMethod.xml b/xml/System.Security.Cryptography.Xml/KeyInfoRetrievalMethod.xml
index a8d446e27b1..8a5ec8decca 100644
--- a/xml/System.Security.Cryptography.Xml/KeyInfoRetrievalMethod.xml
+++ b/xml/System.Security.Cryptography.Xml/KeyInfoRetrievalMethod.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>References <see cref="T:System.Security.Cryptography.Xml.KeyInfo" /> objects stored at a different location when using XMLDSIG or XML encryption.</summary>
@@ -150,12 +146,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="strUri" Type="System.String" Index="0" FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;windowsdesktop-8.0;windowsdesktop-9.0" />
         <Parameter Name="typeName" Type="System.String" Index="1" FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;windowsdesktop-8.0;windowsdesktop-9.0" />
@@ -191,12 +181,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlElement</ReturnType>
       </ReturnValue>
@@ -238,12 +222,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Xml/KeyInfoX509Data.xml b/xml/System.Security.Cryptography.Xml/KeyInfoX509Data.xml
index f1a5928e276..9990e84dd04 100644
--- a/xml/System.Security.Cryptography.Xml/KeyInfoX509Data.xml
+++ b/xml/System.Security.Cryptography.Xml/KeyInfoX509Data.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an <see langword="&lt;X509Data&gt;" /> subelement of an XMLDSIG or XML Encryption <see langword="&lt;KeyInfo&gt;" /> element.</summary>
@@ -134,12 +130,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="rgbCert" Type="System.Byte[]" />
       </Parameters>
@@ -173,12 +163,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="cert" Type="System.Security.Cryptography.X509Certificates.X509Certificate" />
       </Parameters>
@@ -232,10 +216,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -288,12 +268,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -331,12 +305,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -402,12 +370,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -451,10 +413,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -503,12 +461,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -613,12 +565,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlElement</ReturnType>
       </ReturnValue>
@@ -705,12 +651,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Xml/KeyReference.xml b/xml/System.Security.Cryptography.Xml/KeyReference.xml
index b391b5b5938..8ef4b1cb060 100644
--- a/xml/System.Security.Cryptography.Xml/KeyReference.xml
+++ b/xml/System.Security.Cryptography.Xml/KeyReference.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="&lt;KeyReference&gt;" /> element used in XML encryption. This class cannot be inherited.</summary>
diff --git a/xml/System.Security.Cryptography.Xml/RSAKeyValue.xml b/xml/System.Security.Cryptography.Xml/RSAKeyValue.xml
index bc0f504c42b..8cef7a505ce 100644
--- a/xml/System.Security.Cryptography.Xml/RSAKeyValue.xml
+++ b/xml/System.Security.Cryptography.Xml/RSAKeyValue.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the &lt;<see langword="RSAKeyValue" />&gt; element of an XML signature.</summary>
diff --git a/xml/System.Security.Cryptography.Xml/Reference.xml b/xml/System.Security.Cryptography.Xml/Reference.xml
index 1cd89dd92b9..818e6b77082 100644
--- a/xml/System.Security.Cryptography.Xml/Reference.xml
+++ b/xml/System.Security.Cryptography.Xml/Reference.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="&lt;reference&gt;" /> element of an XML signature.</summary>
@@ -153,12 +149,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="stream" Type="System.IO.Stream" />
       </Parameters>
@@ -249,12 +239,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -323,14 +307,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -423,12 +399,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlElement</ReturnType>
       </ReturnValue>
@@ -518,10 +488,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("XmlDsigXsltTransform uses XslCompiledTransform which requires dynamic code.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("XmlDsigXsltTransform uses XslCompiledTransform which requires dynamic code.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -574,14 +540,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[set: System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography.Xml/ReferenceList.xml b/xml/System.Security.Cryptography.Xml/ReferenceList.xml
index b9565f592a9..c442a2ac6df 100644
--- a/xml/System.Security.Cryptography.Xml/ReferenceList.xml
+++ b/xml/System.Security.Cryptography.Xml/ReferenceList.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="&lt;ReferenceList&gt;" /> element used in XML encryption. This class cannot be inherited.</summary>
@@ -122,12 +118,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -209,12 +199,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -374,12 +358,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -420,12 +398,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -506,12 +478,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Xml.EncryptedReference</ReturnType>
       </ReturnValue>
@@ -588,12 +554,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Xml/Signature.xml b/xml/System.Security.Cryptography.Xml/Signature.xml
index 5ff2cc8f59c..1120d5fd9e5 100644
--- a/xml/System.Security.Cryptography.Xml/Signature.xml
+++ b/xml/System.Security.Cryptography.Xml/Signature.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="&lt;Signature&gt;" /> element of an XML signature.</summary>
@@ -230,14 +226,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -442,14 +430,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
@@ -500,14 +480,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Xml.SignedInfo</ReturnType>
diff --git a/xml/System.Security.Cryptography.Xml/SignedInfo.xml b/xml/System.Security.Cryptography.Xml/SignedInfo.xml
index 54f65f2dce0..557ac44b13a 100644
--- a/xml/System.Security.Cryptography.Xml/SignedInfo.xml
+++ b/xml/System.Security.Cryptography.Xml/SignedInfo.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains information about the canonicalization algorithm and signature algorithm used for the XML signature.</summary>
@@ -440,14 +436,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -664,14 +652,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -712,14 +692,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Security.Cryptography.Xml/SignedXml.xml b/xml/System.Security.Cryptography.Xml/SignedXml.xml
index 49268ecb62a..2de2ed7453a 100644
--- a/xml/System.Security.Cryptography.Xml/SignedXml.xml
+++ b/xml/System.Security.Cryptography.Xml/SignedXml.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a wrapper on a core XML signature object to facilitate creating XML signatures.</summary>
@@ -681,12 +677,6 @@ The following code example shows how to sign and verify a single element of an X
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -944,12 +934,6 @@ The following code example shows how to sign and verify a single element of an X
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlElement</ReturnType>
       </ReturnValue>
@@ -997,12 +981,6 @@ The following code example shows how to sign and verify a single element of an X
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.AsymmetricAlgorithm</ReturnType>
       </ReturnValue>
@@ -1476,10 +1454,6 @@ The following code example shows how to sign and verify a single element of an X
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1520,10 +1494,6 @@ The following code example shows how to sign and verify a single element of an X
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1575,10 +1545,6 @@ The following code example shows how to sign and verify a single element of an X
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
@@ -1630,10 +1596,6 @@ The following code example shows how to sign and verify a single element of an X
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Xml.SignedInfo</ReturnType>
@@ -1685,14 +1647,6 @@ The following code example shows how to sign and verify a single element of an X
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.AsymmetricAlgorithm</ReturnType>
@@ -1761,14 +1715,6 @@ The following code example shows how to sign and verify a single element of an X
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Security.Cryptography.Xml/Transform.xml b/xml/System.Security.Cryptography.Xml/Transform.xml
index 26d6e119095..a8025f9ba47 100644
--- a/xml/System.Security.Cryptography.Xml/Transform.xml
+++ b/xml/System.Security.Cryptography.Xml/Transform.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the abstract base class from which all <see langword="&lt;Transform&gt;" /> elements that can be used in an XML digital signature derive.</summary>
@@ -118,14 +114,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -174,14 +162,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -272,12 +252,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNodeList</ReturnType>
       </ReturnValue>
@@ -689,10 +663,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography.Xml/TransformChain.xml b/xml/System.Security.Cryptography.Xml/TransformChain.xml
index 57d6a217d76..48a2ba3ab22 100644
--- a/xml/System.Security.Cryptography.Xml/TransformChain.xml
+++ b/xml/System.Security.Cryptography.Xml/TransformChain.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines an ordered list of <see cref="T:System.Security.Cryptography.Xml.Transform" /> objects that is applied to unsigned content prior to digest calculation.</summary>
diff --git a/xml/System.Security.Cryptography.Xml/X509IssuerSerial.xml b/xml/System.Security.Cryptography.Xml/X509IssuerSerial.xml
index 21578076c3b..6ac219fb62c 100644
--- a/xml/System.Security.Cryptography.Xml/X509IssuerSerial.xml
+++ b/xml/System.Security.Cryptography.Xml/X509IssuerSerial.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the &lt;<see langword="X509IssuerSerial" />&gt; element of an XML digital signature.</summary>
diff --git a/xml/System.Security.Cryptography.Xml/XmlDecryptionTransform.xml b/xml/System.Security.Cryptography.Xml/XmlDecryptionTransform.xml
index 10f8766c02c..33bf6239f48 100644
--- a/xml/System.Security.Cryptography.Xml/XmlDecryptionTransform.xml
+++ b/xml/System.Security.Cryptography.Xml/XmlDecryptionTransform.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the order of XML Digital Signature and XML Encryption operations when both are performed on the same document.</summary>
@@ -189,12 +185,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNodeList</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Xml/XmlDsigBase64Transform.xml b/xml/System.Security.Cryptography.Xml/XmlDsigBase64Transform.xml
index b0ae237557d..2fe7f3c3734 100644
--- a/xml/System.Security.Cryptography.Xml/XmlDsigBase64Transform.xml
+++ b/xml/System.Security.Cryptography.Xml/XmlDsigBase64Transform.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="Base64" /> decoding transform as defined in Section 6.6.2 of the XMLDSIG specification.</summary>
@@ -129,12 +125,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNodeList</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Xml/XmlDsigC14NTransform.xml b/xml/System.Security.Cryptography.Xml/XmlDsigC14NTransform.xml
index 6a9f4b3a10f..86e5aee5eca 100644
--- a/xml/System.Security.Cryptography.Xml/XmlDsigC14NTransform.xml
+++ b/xml/System.Security.Cryptography.Xml/XmlDsigC14NTransform.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the C14N XML canonicalization transform for a digital signature as defined by the World Wide Web Consortium (W3C), without comments.</summary>
@@ -239,12 +235,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNodeList</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Xml/XmlDsigEnvelopedSignatureTransform.xml b/xml/System.Security.Cryptography.Xml/XmlDsigEnvelopedSignatureTransform.xml
index 28d6734e354..2cd6834da5b 100644
--- a/xml/System.Security.Cryptography.Xml/XmlDsigEnvelopedSignatureTransform.xml
+++ b/xml/System.Security.Cryptography.Xml/XmlDsigEnvelopedSignatureTransform.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the enveloped signature transform for an XML digital signature as defined by the W3C.</summary>
@@ -193,12 +189,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNodeList</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Xml/XmlDsigExcC14NTransform.xml b/xml/System.Security.Cryptography.Xml/XmlDsigExcC14NTransform.xml
index be19014c7ce..0cb962bc725 100644
--- a/xml/System.Security.Cryptography.Xml/XmlDsigExcC14NTransform.xml
+++ b/xml/System.Security.Cryptography.Xml/XmlDsigExcC14NTransform.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the exclusive C14N XML canonicalization transform for a digital signature as defined by the World Wide Web Consortium (W3C), without comments.</summary>
@@ -204,12 +200,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="includeComments" Type="System.Boolean" />
         <Parameter Name="inclusiveNamespacesPrefixList" Type="System.String" />
@@ -289,12 +279,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNodeList</ReturnType>
       </ReturnValue>
@@ -426,14 +410,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Security.Cryptography.Xml/XmlDsigExcC14NWithCommentsTransform.xml b/xml/System.Security.Cryptography.Xml/XmlDsigExcC14NWithCommentsTransform.xml
index b34061ebef8..c9fdee976e6 100644
--- a/xml/System.Security.Cryptography.Xml/XmlDsigExcC14NWithCommentsTransform.xml
+++ b/xml/System.Security.Cryptography.Xml/XmlDsigExcC14NWithCommentsTransform.xml
@@ -117,12 +117,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="inclusiveNamespacesPrefixList" Type="System.String" />
       </Parameters>
diff --git a/xml/System.Security.Cryptography.Xml/XmlDsigXPathTransform.xml b/xml/System.Security.Cryptography.Xml/XmlDsigXPathTransform.xml
index 33ea8020e94..4c4d1f6d020 100644
--- a/xml/System.Security.Cryptography.Xml/XmlDsigXPathTransform.xml
+++ b/xml/System.Security.Cryptography.Xml/XmlDsigXPathTransform.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the XPath transform for a digital signature as defined by the W3C.</summary>
@@ -138,12 +134,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNodeList</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Xml/XmlDsigXsltTransform.xml b/xml/System.Security.Cryptography.Xml/XmlDsigXsltTransform.xml
index ed646cca6b9..ad262bf4859 100644
--- a/xml/System.Security.Cryptography.Xml/XmlDsigXsltTransform.xml
+++ b/xml/System.Security.Cryptography.Xml/XmlDsigXsltTransform.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the XSLT transform for a digital signature as defined by the W3C.</summary>
@@ -186,12 +182,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNodeList</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography.Xml/XmlLicenseTransform.xml b/xml/System.Security.Cryptography.Xml/XmlLicenseTransform.xml
index 5565c54c915..8ac47d17e97 100644
--- a/xml/System.Security.Cryptography.Xml/XmlLicenseTransform.xml
+++ b/xml/System.Security.Cryptography.Xml/XmlLicenseTransform.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the license transform algorithm used to normalize XrML licenses for signatures.</summary>
@@ -128,14 +124,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Xml.IRelDecryptor</ReturnType>
@@ -186,12 +174,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNodeList</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/Aes.xml b/xml/System.Security.Cryptography/Aes.xml
index 77662552680..cbdb9578153 100644
--- a/xml/System.Security.Cryptography/Aes.xml
+++ b/xml/System.Security.Cryptography/Aes.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.CompilerServices.TypeForwardedFrom("System.Core, Version=3.5.0.0, Culture=Neutral, PublicKeyToken=b77a5c561934e089")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.TypeForwardedFrom("System.Core, Version=3.5.0.0, Culture=Neutral, PublicKeyToken=b77a5c561934e089")&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/AesCcm.xml b/xml/System.Security.Cryptography/AesCcm.xml
index 650fc2e313c..8fb15c956e0 100644
--- a/xml/System.Security.Cryptography/AesCcm.xml
+++ b/xml/System.Security.Cryptography/AesCcm.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an Advanced Encryption Standard (AES) key to be used with the Counter with CBC-MAC (CCM) mode of operation.</summary>
@@ -128,12 +124,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="key" Type="System.ReadOnlySpan&lt;System.Byte&gt;" />
       </Parameters>
@@ -240,12 +230,6 @@ The <paramref name="tag" /> parameter length is not permitted by <see cref="P:Sy
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -417,12 +401,6 @@ The <paramref name="tag" /> parameter length is not permitted by <see cref="P:Sy
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/AesCng.xml b/xml/System.Security.Cryptography/AesCng.xml
index 9447cafcfd7..913a2cfc901 100644
--- a/xml/System.Security.Cryptography/AesCng.xml
+++ b/xml/System.Security.Cryptography/AesCng.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a Cryptography Next Generation (CNG) implementation of the Advanced Encryption Standard (AES) algorithm.</summary>
@@ -817,12 +813,6 @@ Use this method to encrypt a message and then use the <xref:System.Security.Cryp
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -864,12 +854,6 @@ Use this method to encrypt a message and then use the <xref:System.Security.Cryp
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -913,12 +897,6 @@ Use this method to encrypt a message and then use the <xref:System.Security.Cryp
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -958,12 +936,6 @@ Use this method to encrypt a message and then use the <xref:System.Security.Cryp
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1005,12 +977,6 @@ Use this method to encrypt a message and then use the <xref:System.Security.Cryp
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1054,12 +1020,6 @@ Use this method to encrypt a message and then use the <xref:System.Security.Cryp
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/AesCryptoServiceProvider.xml b/xml/System.Security.Cryptography/AesCryptoServiceProvider.xml
index 70de0904bd3..0e5ecebddbe 100644
--- a/xml/System.Security.Cryptography/AesCryptoServiceProvider.xml
+++ b/xml/System.Security.Cryptography/AesCryptoServiceProvider.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Performs symmetric encryption and decryption using the Cryptographic Application Programming Interfaces (CAPI) implementation of the Advanced Encryption Standard (AES) algorithm.</summary>
diff --git a/xml/System.Security.Cryptography/AesGcm.xml b/xml/System.Security.Cryptography/AesGcm.xml
index cafa017f847..11e1e420c0c 100644
--- a/xml/System.Security.Cryptography/AesGcm.xml
+++ b/xml/System.Security.Cryptography/AesGcm.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-9.0">
       <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("ios13.0")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("ios13.0")&gt;]</AttributeName>
@@ -147,10 +143,6 @@
           <AttributeName Language="C#">[System.Obsolete("AesGcm should indicate the required tag size for encryption and decryption. Use a constructor that accepts the tag size.", DiagnosticId="SYSLIB0053", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("AesGcm should indicate the required tag size for encryption and decryption. Use a constructor that accepts the tag size.", DiagnosticId="SYSLIB0053", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="key" Type="System.ReadOnlySpan&lt;System.Byte&gt;" />
@@ -216,12 +208,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="key" Type="System.ReadOnlySpan&lt;System.Byte&gt;" Index="0" FrameworkAlternate="net-8.0;windowsdesktop-9.0;net-9.0" />
         <Parameter Name="tagSizeInBytes" Type="System.Int32" Index="1" FrameworkAlternate="net-8.0;windowsdesktop-9.0;net-9.0" />
@@ -333,12 +319,6 @@ The <paramref name="tag" /> parameter length is not permitted by <see cref="P:Sy
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -510,12 +490,6 @@ The <paramref name="tag" /> parameter length is not permitted by <see cref="P:Sy
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/AesManaged.xml b/xml/System.Security.Cryptography/AesManaged.xml
index 5ad8824742c..2c2fef671a3 100644
--- a/xml/System.Security.Cryptography/AesManaged.xml
+++ b/xml/System.Security.Cryptography/AesManaged.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a managed implementation of the Advanced Encryption Standard (AES) symmetric algorithm.</summary>
diff --git a/xml/System.Security.Cryptography/AsnEncodedData.xml b/xml/System.Security.Cryptography/AsnEncodedData.xml
index c8a20faa466..1b4a02411c8 100644
--- a/xml/System.Security.Cryptography/AsnEncodedData.xml
+++ b/xml/System.Security.Cryptography/AsnEncodedData.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents Abstract Syntax Notation One (ASN.1)-encoded data.</summary>
@@ -209,12 +205,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="rawData" Type="System.ReadOnlySpan&lt;System.Byte&gt;" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0" />
       </Parameters>
@@ -371,12 +361,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="oid" Type="System.Security.Cryptography.Oid" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0">
           <Attributes>
@@ -473,12 +457,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="oid" Type="System.String" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0">
           <Attributes>
@@ -671,14 +649,6 @@ The following code example shows how to use the <xref:System.Security.Cryptograp
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/AsnEncodedDataCollection.xml b/xml/System.Security.Cryptography/AsnEncodedDataCollection.xml
index 74aaaa6bc10..bcfe3efcca3 100644
--- a/xml/System.Security.Cryptography/AsnEncodedDataCollection.xml
+++ b/xml/System.Security.Cryptography/AsnEncodedDataCollection.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Security.Cryptography.AsnEncodedData" /> objects. This class cannot be inherited.</summary>
diff --git a/xml/System.Security.Cryptography/AsnEncodedDataEnumerator.xml b/xml/System.Security.Cryptography/AsnEncodedDataEnumerator.xml
index 1aa29145aba..50304c5dd6d 100644
--- a/xml/System.Security.Cryptography/AsnEncodedDataEnumerator.xml
+++ b/xml/System.Security.Cryptography/AsnEncodedDataEnumerator.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the ability to navigate through an <see cref="T:System.Security.Cryptography.AsnEncodedDataCollection" /> object. This class cannot be inherited.</summary>
diff --git a/xml/System.Security.Cryptography/AsymmetricAlgorithm.xml b/xml/System.Security.Cryptography/AsymmetricAlgorithm.xml
index f21deedf5b3..62ab40fe6ee 100644
--- a/xml/System.Security.Cryptography/AsymmetricAlgorithm.xml
+++ b/xml/System.Security.Cryptography/AsymmetricAlgorithm.xml
@@ -265,10 +265,6 @@
           <AttributeName Language="C#">[System.Obsolete("The default implementation of this cryptography algorithm is not supported.", DiagnosticId="SYSLIB0007", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("The default implementation of this cryptography algorithm is not supported.", DiagnosticId="SYSLIB0007", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -345,10 +341,6 @@ This method is obsolete in .NET 5 and later versions.
           <AttributeName Language="C#">[System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -569,12 +561,6 @@ This method is obsolete in .NET 5 and later versions.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -637,12 +623,6 @@ This method is obsolete in .NET 5 and later versions.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -696,12 +676,6 @@ This method is obsolete in .NET 5 and later versions.
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -755,12 +729,6 @@ This method is obsolete in .NET 5 and later versions.
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -828,12 +796,6 @@ This method is obsolete in .NET 5 and later versions.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -870,12 +832,6 @@ This method is obsolete in .NET 5 and later versions.
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -928,12 +884,6 @@ This method is obsolete in .NET 5 and later versions.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -968,12 +918,6 @@ This method is obsolete in .NET 5 and later versions.
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1040,12 +984,6 @@ This method is obsolete in .NET 5 and later versions.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1595,10 +1533,6 @@ The algorithm-specific key import failed.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1776,10 +1710,6 @@ The algorithm-specific key import failed.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.KeySizes[]</ReturnType>
@@ -1913,10 +1843,6 @@ The algorithm-specific key import failed.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2020,12 +1946,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/AsymmetricKeyExchangeDeformatter.xml b/xml/System.Security.Cryptography/AsymmetricKeyExchangeDeformatter.xml
index b2a708e214b..e953957b668 100644
--- a/xml/System.Security.Cryptography/AsymmetricKeyExchangeDeformatter.xml
+++ b/xml/System.Security.Cryptography/AsymmetricKeyExchangeDeformatter.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -175,12 +171,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -299,12 +289,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/AsymmetricKeyExchangeFormatter.xml b/xml/System.Security.Cryptography/AsymmetricKeyExchangeFormatter.xml
index 8f5073fedde..0f4850e176f 100644
--- a/xml/System.Security.Cryptography/AsymmetricKeyExchangeFormatter.xml
+++ b/xml/System.Security.Cryptography/AsymmetricKeyExchangeFormatter.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -304,10 +300,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Security.Cryptography/AsymmetricSignatureDeformatter.xml b/xml/System.Security.Cryptography/AsymmetricSignatureDeformatter.xml
index 699defbe52b..77fc179d4ec 100644
--- a/xml/System.Security.Cryptography/AsymmetricSignatureDeformatter.xml
+++ b/xml/System.Security.Cryptography/AsymmetricSignatureDeformatter.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/AsymmetricSignatureFormatter.xml b/xml/System.Security.Cryptography/AsymmetricSignatureFormatter.xml
index b06d57629d7..af3a8573f09 100644
--- a/xml/System.Security.Cryptography/AsymmetricSignatureFormatter.xml
+++ b/xml/System.Security.Cryptography/AsymmetricSignatureFormatter.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/AuthenticationTagMismatchException.xml b/xml/System.Security.Cryptography/AuthenticationTagMismatchException.xml
index c3df348476f..2c94543f065 100644
--- a/xml/System.Security.Cryptography/AuthenticationTagMismatchException.xml
+++ b/xml/System.Security.Cryptography/AuthenticationTagMismatchException.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The exception that is thrown when a decryption operation with an authenticated cipher has an authentication tag mismatch.</summary>
diff --git a/xml/System.Security.Cryptography/ChaCha20Poly1305.xml b/xml/System.Security.Cryptography/ChaCha20Poly1305.xml
index 11ef86e358c..60efb344c6e 100644
--- a/xml/System.Security.Cryptography/ChaCha20Poly1305.xml
+++ b/xml/System.Security.Cryptography/ChaCha20Poly1305.xml
@@ -73,12 +73,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="key" Type="System.Byte[]" />
       </Parameters>
@@ -134,12 +128,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -290,12 +278,6 @@ The <paramref name="tag" /> parameter length is not 16 bytes (128 bits).</except
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/CngAlgorithm.xml b/xml/System.Security.Cryptography/CngAlgorithm.xml
index a5e7eb80c81..1158bbd2a2d 100644
--- a/xml/System.Security.Cryptography/CngAlgorithm.xml
+++ b/xml/System.Security.Cryptography/CngAlgorithm.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -562,12 +558,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -626,12 +616,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -772,12 +756,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -828,12 +806,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/CngAlgorithmGroup.xml b/xml/System.Security.Cryptography/CngAlgorithmGroup.xml
index ea7f4185b8f..ace4f30d77d 100644
--- a/xml/System.Security.Cryptography/CngAlgorithmGroup.xml
+++ b/xml/System.Security.Cryptography/CngAlgorithmGroup.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -396,12 +392,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -460,12 +450,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -564,12 +548,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -620,12 +598,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/CngKey.xml b/xml/System.Security.Cryptography/CngKey.xml
index 6df4d289aac..d4d2eca1efa 100644
--- a/xml/System.Security.Cryptography/CngKey.xml
+++ b/xml/System.Security.Cryptography/CngKey.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the core functionality for keys that are used with Cryptography Next Generation (CNG) objects.</summary>
@@ -162,10 +158,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0">
           <AttributeName Language="C#">[get: System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecurityCritical&gt;]</AttributeName>
@@ -1435,10 +1427,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0">
           <AttributeName Language="C#">[get: System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecurityCritical&gt;]</AttributeName>
@@ -1962,10 +1950,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0">
           <AttributeName Language="C#">[get: System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecurityCritical&gt;]</AttributeName>
@@ -2201,10 +2185,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0">
           <AttributeName Language="C#">[get: System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/CngKeyBlobFormat.xml b/xml/System.Security.Cryptography/CngKeyBlobFormat.xml
index 389fe9f7e63..bcaa4bb67a2 100644
--- a/xml/System.Security.Cryptography/CngKeyBlobFormat.xml
+++ b/xml/System.Security.Cryptography/CngKeyBlobFormat.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -358,12 +354,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -422,12 +412,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -672,12 +656,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -728,12 +706,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/CngKeyCreationParameters.xml b/xml/System.Security.Cryptography/CngKeyCreationParameters.xml
index 971a27fded1..261549db056 100644
--- a/xml/System.Security.Cryptography/CngKeyCreationParameters.xml
+++ b/xml/System.Security.Cryptography/CngKeyCreationParameters.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains advanced properties for key creation.</summary>
@@ -506,14 +502,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/CngProperty.xml b/xml/System.Security.Cryptography/CngProperty.xml
index 9bde1ac56ea..b88d004c20f 100644
--- a/xml/System.Security.Cryptography/CngProperty.xml
+++ b/xml/System.Security.Cryptography/CngProperty.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates a property of a Cryptography Next Generation (CNG) key or provider.</summary>
@@ -184,12 +180,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -352,12 +342,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
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-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/CngProvider.xml b/xml/System.Security.Cryptography/CngProvider.xml
index 5b0eb8811d2..f17683ff3b5 100644
--- a/xml/System.Security.Cryptography/CngProvider.xml
+++ b/xml/System.Security.Cryptography/CngProvider.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -180,12 +176,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -244,12 +234,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -462,12 +446,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -518,12 +496,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/CngUIPolicy.xml b/xml/System.Security.Cryptography/CngUIPolicy.xml
index a3f2e8a6342..903819c1373 100644
--- a/xml/System.Security.Cryptography/CngUIPolicy.xml
+++ b/xml/System.Security.Cryptography/CngUIPolicy.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates optional configuration parameters for the user interface (UI) that Cryptography Next Generation (CNG) displays when you access a protected key.</summary>
diff --git a/xml/System.Security.Cryptography/CryptoConfig.xml b/xml/System.Security.Cryptography/CryptoConfig.xml
index e4ccb453f78..6392ecc2c4f 100644
--- a/xml/System.Security.Cryptography/CryptoConfig.xml
+++ b/xml/System.Security.Cryptography/CryptoConfig.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -499,10 +495,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The default algorithm implementations might be removed, use strong type references like 'RSA.Create()' instead.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The default algorithm implementations might be removed, use strong type references like 'RSA.Create()' instead.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/CryptoStream.xml b/xml/System.Security.Cryptography/CryptoStream.xml
index 4a733375a1c..1d5bc77e877 100644
--- a/xml/System.Security.Cryptography/CryptoStream.xml
+++ b/xml/System.Security.Cryptography/CryptoStream.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -1405,12 +1401,6 @@ This property exists only to support inheritance from <xref:System.IO.Stream>, a
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -1788,12 +1778,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/CryptographicAttributeObject.xml b/xml/System.Security.Cryptography/CryptographicAttributeObject.xml
index cd257f18d72..cc529d73f99 100644
--- a/xml/System.Security.Cryptography/CryptographicAttributeObject.xml
+++ b/xml/System.Security.Cryptography/CryptographicAttributeObject.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains a type and a collection of values associated with that type.</summary>
diff --git a/xml/System.Security.Cryptography/CryptographicAttributeObjectCollection.xml b/xml/System.Security.Cryptography/CryptographicAttributeObjectCollection.xml
index d54f1b43e62..103279b1021 100644
--- a/xml/System.Security.Cryptography/CryptographicAttributeObjectCollection.xml
+++ b/xml/System.Security.Cryptography/CryptographicAttributeObjectCollection.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains a set of <see cref="T:System.Security.Cryptography.CryptographicAttributeObject" /> objects.</summary>
diff --git a/xml/System.Security.Cryptography/CryptographicAttributeObjectEnumerator.xml b/xml/System.Security.Cryptography/CryptographicAttributeObjectEnumerator.xml
index 86f9ab65ef3..7d42e3799cf 100644
--- a/xml/System.Security.Cryptography/CryptographicAttributeObjectEnumerator.xml
+++ b/xml/System.Security.Cryptography/CryptographicAttributeObjectEnumerator.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides enumeration functionality for the <see cref="T:System.Security.Cryptography.CryptographicAttributeObjectCollection" /> collection. This class cannot be inherited.</summary>
diff --git a/xml/System.Security.Cryptography/CryptographicException.xml b/xml/System.Security.Cryptography/CryptographicException.xml
index 7b5114acd2a..e9643461e2d 100644
--- a/xml/System.Security.Cryptography/CryptographicException.xml
+++ b/xml/System.Security.Cryptography/CryptographicException.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -281,12 +277,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
       </Parameters>
@@ -419,12 +409,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
         <Parameter Name="inner" Type="System.Exception" />
diff --git a/xml/System.Security.Cryptography/CryptographicOperations.xml b/xml/System.Security.Cryptography/CryptographicOperations.xml
index 695f5cf2247..2310b78c710 100644
--- a/xml/System.Security.Cryptography/CryptographicOperations.xml
+++ b/xml/System.Security.Cryptography/CryptographicOperations.xml
@@ -112,12 +112,6 @@ Fixed-time behavior is guaranteed in all other cases, including when `left` and
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -166,12 +160,6 @@ Fixed-time behavior is guaranteed in all other cases, including when `left` and
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -384,12 +372,6 @@ Fixed-time behavior is guaranteed in all other cases, including when `left` and
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
         <Attributes>
@@ -520,12 +502,6 @@ Fixed-time behavior is guaranteed in all other cases, including when `left` and
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -576,12 +552,6 @@ Fixed-time behavior is guaranteed in all other cases, including when `left` and
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -637,12 +607,6 @@ Fixed-time behavior is guaranteed in all other cases, including when `left` and
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -870,12 +834,6 @@ Fixed-time behavior is guaranteed in all other cases, including when `left` and
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
         <Attributes>
diff --git a/xml/System.Security.Cryptography/CryptographicUnexpectedOperationException.xml b/xml/System.Security.Cryptography/CryptographicUnexpectedOperationException.xml
index b7a50cf6525..810c348309b 100644
--- a/xml/System.Security.Cryptography/CryptographicUnexpectedOperationException.xml
+++ b/xml/System.Security.Cryptography/CryptographicUnexpectedOperationException.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -193,12 +189,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
       </Parameters>
@@ -329,12 +319,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
         <Parameter Name="inner" Type="System.Exception" />
diff --git a/xml/System.Security.Cryptography/CspKeyContainerInfo.xml b/xml/System.Security.Cryptography/CspKeyContainerInfo.xml
index 8965bfeed3a..ca26bd617ec 100644
--- a/xml/System.Security.Cryptography/CspKeyContainerInfo.xml
+++ b/xml/System.Security.Cryptography/CspKeyContainerInfo.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -122,10 +118,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -912,10 +904,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[get: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/CspParameters.xml b/xml/System.Security.Cryptography/CspParameters.xml
index 88a80e34f3b..b4cc9655558 100644
--- a/xml/System.Security.Cryptography/CspParameters.xml
+++ b/xml/System.Security.Cryptography/CspParameters.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/DES.xml b/xml/System.Security.Cryptography/DES.xml
index c8886a6e3cf..c611550df7e 100644
--- a/xml/System.Security.Cryptography/DES.xml
+++ b/xml/System.Security.Cryptography/DES.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/DESCryptoServiceProvider.xml b/xml/System.Security.Cryptography/DESCryptoServiceProvider.xml
index ca5f497d7e1..be3df1bf4ae 100644
--- a/xml/System.Security.Cryptography/DESCryptoServiceProvider.xml
+++ b/xml/System.Security.Cryptography/DESCryptoServiceProvider.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/DSA.xml b/xml/System.Security.Cryptography/DSA.xml
index 535e28e1e35..213b1dfc3ea 100644
--- a/xml/System.Security.Cryptography/DSA.xml
+++ b/xml/System.Security.Cryptography/DSA.xml
@@ -173,10 +173,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -236,10 +232,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.DSA</ReturnType>
@@ -299,10 +291,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.DSA</ReturnType>
@@ -361,10 +349,6 @@
           <AttributeName Language="C#">[System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -425,12 +409,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -467,12 +445,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -614,12 +586,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -713,12 +679,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -766,12 +726,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1356,12 +1310,6 @@ The algorithm-specific key import failed.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1412,12 +1360,6 @@ The algorithm-specific key import failed.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1459,12 +1401,6 @@ The algorithm-specific key import failed.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1511,12 +1447,6 @@ The algorithm-specific key import failed.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1572,12 +1502,6 @@ The algorithm-specific key import failed.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1633,12 +1557,6 @@ The algorithm-specific key import failed.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1700,12 +1618,6 @@ The algorithm-specific key import failed.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1798,12 +1710,6 @@ The algorithm-specific key import failed.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -2407,12 +2313,6 @@ Derived types should override this method to avoid the intermediate array creati
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2475,12 +2375,6 @@ Verifying the signature otherwise failed.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2584,12 +2478,6 @@ Verifying the signature otherwise failed.</exception>
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2639,12 +2527,6 @@ Verifying the signature otherwise failed.</exception>
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2748,12 +2630,6 @@ Verifying the signature otherwise failed.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2821,12 +2697,6 @@ Verifying the signature otherwise failed.</exception>
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2994,12 +2864,6 @@ Verifying the signature otherwise failed.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3097,12 +2961,6 @@ Verifying the signature otherwise failed.</exception>
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/DSACng.xml b/xml/System.Security.Cryptography/DSACng.xml
index 108e69ba125..2ccce628350 100644
--- a/xml/System.Security.Cryptography/DSACng.xml
+++ b/xml/System.Security.Cryptography/DSACng.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a Cryptography Next Generation (CNG) implementation of the Digital Signature Algorithm (DSA).</summary>
@@ -528,12 +524,6 @@ An error occurred during signature creation.
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -571,12 +561,6 @@ An error occurred during signature creation.
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -715,10 +699,6 @@ An error occurred during signature creation.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -819,12 +799,6 @@ An error occurred during signature creation.
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -865,12 +839,6 @@ An error occurred during signature creation.
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -919,12 +887,6 @@ An error occurred during signature creation.
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -973,12 +935,6 @@ An error occurred during signature creation.
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1065,12 +1021,6 @@ An error occurred during signature creation.
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/DSACryptoServiceProvider.xml b/xml/System.Security.Cryptography/DSACryptoServiceProvider.xml
index e0bbe9fcc5a..188afc3c501 100644
--- a/xml/System.Security.Cryptography/DSACryptoServiceProvider.xml
+++ b/xml/System.Security.Cryptography/DSACryptoServiceProvider.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -243,10 +239,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="parameters" Type="System.Security.Cryptography.CspParameters" />
@@ -298,10 +290,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -839,12 +827,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -885,12 +867,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1006,10 +982,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Security.Cryptography/DSAOpenSsl.xml b/xml/System.Security.Cryptography/DSAOpenSsl.xml
index 8d90ebd7124..069c26b387e 100644
--- a/xml/System.Security.Cryptography/DSAOpenSsl.xml
+++ b/xml/System.Security.Cryptography/DSAOpenSsl.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an implementation of the Digital Signature Algorithm (DSA) backed by OpenSSL.</summary>
diff --git a/xml/System.Security.Cryptography/DSAParameters.xml b/xml/System.Security.Cryptography/DSAParameters.xml
index c35b0fe4323..acd3d97f043 100644
--- a/xml/System.Security.Cryptography/DSAParameters.xml
+++ b/xml/System.Security.Cryptography/DSAParameters.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/DSASignatureDeformatter.xml b/xml/System.Security.Cryptography/DSASignatureDeformatter.xml
index 3f629ee147b..49d85c2cd74 100644
--- a/xml/System.Security.Cryptography/DSASignatureDeformatter.xml
+++ b/xml/System.Security.Cryptography/DSASignatureDeformatter.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/DSASignatureFormatter.xml b/xml/System.Security.Cryptography/DSASignatureFormatter.xml
index 2bd5035d993..9a8fc58d71c 100644
--- a/xml/System.Security.Cryptography/DSASignatureFormatter.xml
+++ b/xml/System.Security.Cryptography/DSASignatureFormatter.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/DeriveBytes.xml b/xml/System.Security.Cryptography/DeriveBytes.xml
index f223394a156..b21f73bb140 100644
--- a/xml/System.Security.Cryptography/DeriveBytes.xml
+++ b/xml/System.Security.Cryptography/DeriveBytes.xml
@@ -291,12 +291,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/ECAlgorithm.xml b/xml/System.Security.Cryptography/ECAlgorithm.xml
index 03e3b8ad901..6a256777eac 100644
--- a/xml/System.Security.Cryptography/ECAlgorithm.xml
+++ b/xml/System.Security.Cryptography/ECAlgorithm.xml
@@ -53,12 +53,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -84,12 +78,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/ECCurve+ECCurveType.xml b/xml/System.Security.Cryptography/ECCurve+ECCurveType.xml
index 1e1c8a58609..3190e9ba0d2 100644
--- a/xml/System.Security.Cryptography/ECCurve+ECCurveType.xml
+++ b/xml/System.Security.Cryptography/ECCurve+ECCurveType.xml
@@ -43,12 +43,6 @@
   <Base>
     <BaseTypeName>System.Enum</BaseTypeName>
   </Base>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Indicates how to interpret the data contained in an <see cref="T:System.Security.Cryptography.ECCurve" /> object.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Security.Cryptography/ECCurve+NamedCurves.xml b/xml/System.Security.Cryptography/ECCurve+NamedCurves.xml
index 12ff6da2137..a89634ccffe 100644
--- a/xml/System.Security.Cryptography/ECCurve+NamedCurves.xml
+++ b/xml/System.Security.Cryptography/ECCurve+NamedCurves.xml
@@ -44,12 +44,6 @@
     <BaseTypeName>System.Object</BaseTypeName>
   </Base>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents a factory class for creating named curves.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Security.Cryptography/ECCurve.xml b/xml/System.Security.Cryptography/ECCurve.xml
index ca72fae4c8d..e6d3cf04a98 100644
--- a/xml/System.Security.Cryptography/ECCurve.xml
+++ b/xml/System.Security.Cryptography/ECCurve.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netstandard-2.0">
       <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
@@ -233,12 +229,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.ECCurve</ReturnType>
       </ReturnValue>
@@ -287,12 +277,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.ECCurve</ReturnType>
       </ReturnValue>
@@ -339,12 +323,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.ECCurve</ReturnType>
       </ReturnValue>
@@ -693,10 +671,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Oid</ReturnType>
diff --git a/xml/System.Security.Cryptography/ECDiffieHellman.xml b/xml/System.Security.Cryptography/ECDiffieHellman.xml
index 7200108c7d3..ca6c77cdebf 100644
--- a/xml/System.Security.Cryptography/ECDiffieHellman.xml
+++ b/xml/System.Security.Cryptography/ECDiffieHellman.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an abstract base class that Elliptic Curve Diffie-Hellman (ECDH) algorithm implementations can derive from. This class provides the basic set of operations that all ECDH implementations must support.</summary>
@@ -644,12 +640,6 @@ This instance represents only a public key.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1768,10 +1758,6 @@ The algorithm-specific key import failed.</exception>
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Security.Cryptography/ECDiffieHellmanCng.xml b/xml/System.Security.Cryptography/ECDiffieHellmanCng.xml
index 589e265f281..ed49432f78e 100644
--- a/xml/System.Security.Cryptography/ECDiffieHellmanCng.xml
+++ b/xml/System.Security.Cryptography/ECDiffieHellmanCng.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a Cryptography Next Generation (CNG) implementation of the Elliptic Curve Diffie-Hellman (ECDH) algorithm. This class is used to perform cryptographic operations.</summary>
@@ -422,10 +418,6 @@ This instance represents only a public key.</exception>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1208,14 +1200,6 @@ This instance represents only a public key.</exception>
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1261,12 +1245,6 @@ This instance represents only a public key.</exception>
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1304,12 +1282,6 @@ This instance represents only a public key.</exception>
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1397,12 +1369,6 @@ This instance represents only a public key.</exception>
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1580,14 +1546,6 @@ Because key sizes do not uniquely identify elliptic curves, the use of the prope
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1716,14 +1674,6 @@ Because key sizes do not uniquely identify elliptic curves, the use of the prope
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1781,14 +1731,6 @@ Because key sizes do not uniquely identify elliptic curves, the use of the prope
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1852,14 +1794,6 @@ Because key sizes do not uniquely identify elliptic curves, the use of the prope
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -2003,12 +1937,6 @@ Because key sizes do not uniquely identify elliptic curves, the use of the prope
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2057,12 +1985,6 @@ Because key sizes do not uniquely identify elliptic curves, the use of the prope
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2111,12 +2033,6 @@ Because key sizes do not uniquely identify elliptic curves, the use of the prope
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/ECDiffieHellmanCngPublicKey.xml b/xml/System.Security.Cryptography/ECDiffieHellmanCngPublicKey.xml
index e2edf5b15e8..fb01e4ab60b 100644
--- a/xml/System.Security.Cryptography/ECDiffieHellmanCngPublicKey.xml
+++ b/xml/System.Security.Cryptography/ECDiffieHellmanCngPublicKey.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/ECDiffieHellmanOpenSsl.xml b/xml/System.Security.Cryptography/ECDiffieHellmanOpenSsl.xml
index 4b78f6c3713..f599998510e 100644
--- a/xml/System.Security.Cryptography/ECDiffieHellmanOpenSsl.xml
+++ b/xml/System.Security.Cryptography/ECDiffieHellmanOpenSsl.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an implementation of the Elliptic Curve Diffie-Hellman (ECDH) algorithm backed by OpenSSL.</summary>
diff --git a/xml/System.Security.Cryptography/ECDiffieHellmanPublicKey.xml b/xml/System.Security.Cryptography/ECDiffieHellmanPublicKey.xml
index ef51b33e504..6055c72a257 100644
--- a/xml/System.Security.Cryptography/ECDiffieHellmanPublicKey.xml
+++ b/xml/System.Security.Cryptography/ECDiffieHellmanPublicKey.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -537,12 +533,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/ECDsa.xml b/xml/System.Security.Cryptography/ECDsa.xml
index c44ac0177b6..25efd83fb9f 100644
--- a/xml/System.Security.Cryptography/ECDsa.xml
+++ b/xml/System.Security.Cryptography/ECDsa.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an abstract base class that encapsulates the Elliptic Curve Digital Signature Algorithm (ECDSA).</summary>
@@ -1355,10 +1351,6 @@ The algorithm-specific key import failed.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1557,12 +1549,6 @@ The algorithm-specific key import failed.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1694,12 +1680,6 @@ The algorithm-specific key import failed.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1743,12 +1723,6 @@ The algorithm-specific key import failed.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1862,12 +1836,6 @@ The buffer in <paramref name="destination" /> is too small to hold the signature
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2022,12 +1990,6 @@ The buffer in <paramref name="destination" /> is too small to hold the signature
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -2115,12 +2077,6 @@ The buffer in <paramref name="destination" /> is too small to hold the signature
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -2197,12 +2153,6 @@ The buffer in <paramref name="destination" /> is too small to hold the signature
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -2241,12 +2191,6 @@ The buffer in <paramref name="destination" /> is too small to hold the signature
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2284,12 +2228,6 @@ The buffer in <paramref name="destination" /> is too small to hold the signature
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2333,12 +2271,6 @@ The buffer in <paramref name="destination" /> is too small to hold the signature
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -2643,12 +2575,6 @@ The buffer in <paramref name="destination" /> is too small to hold the signature
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2703,12 +2629,6 @@ Derived types should override this method to avoid the intermediate array creati
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2751,12 +2671,6 @@ Derived types should override this method to avoid the intermediate array creati
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2806,12 +2720,6 @@ Derived types should override this method to avoid the intermediate array creati
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2860,12 +2768,6 @@ Derived types should override this method to avoid the intermediate array creati
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2906,12 +2808,6 @@ Derived types should override this method to avoid the intermediate array creati
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2957,12 +2853,6 @@ Derived types should override this method to avoid the intermediate array creati
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3140,12 +3030,6 @@ Derived types should override this method to avoid the intermediate array creati
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3286,12 +3170,6 @@ Derived types should override this method to avoid the intermediate array creati
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3476,12 +3354,6 @@ Derived types should override this method to avoid the intermediate array creati
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3532,12 +3404,6 @@ Derived types should override this method to avoid the intermediate array creati
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3637,12 +3503,6 @@ Derived types should override this method to avoid the intermediate array creati
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3726,12 +3586,6 @@ Derived types should override this method to avoid the intermediate array creati
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3775,12 +3629,6 @@ Derived types should override this method to avoid the intermediate array creati
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/ECDsaCng.xml b/xml/System.Security.Cryptography/ECDsaCng.xml
index d2b69395af3..8db045d2698 100644
--- a/xml/System.Security.Cryptography/ECDsaCng.xml
+++ b/xml/System.Security.Cryptography/ECDsaCng.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a Cryptography Next Generation (CNG) implementation of the Elliptic Curve Digital Signature Algorithm (ECDSA).</summary>
@@ -866,12 +862,6 @@ If a key is loaded via the <xref:System.Security.Cryptography.ECDsaCng.ImportPar
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -909,12 +899,6 @@ If a key is loaded via the <xref:System.Security.Cryptography.ECDsaCng.ImportPar
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1008,12 +992,6 @@ If a key is loaded via the <xref:System.Security.Cryptography.ECDsaCng.ImportPar
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1558,12 +1536,6 @@ but that is not reflected in this property.
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1612,12 +1584,6 @@ but that is not reflected in this property.
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1666,12 +1632,6 @@ but that is not reflected in this property.
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1709,12 +1669,6 @@ but that is not reflected in this property.
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1754,12 +1708,6 @@ but that is not reflected in this property.
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2059,12 +2007,6 @@ but that is not reflected in this property.
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2102,12 +2044,6 @@ but that is not reflected in this property.
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/ECDsaOpenSsl.xml b/xml/System.Security.Cryptography/ECDsaOpenSsl.xml
index 18073323493..2ce808230c4 100644
--- a/xml/System.Security.Cryptography/ECDsaOpenSsl.xml
+++ b/xml/System.Security.Cryptography/ECDsaOpenSsl.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an implementation of the Elliptic Curve Digital Signature Algorithm (ECDSA) backed by OpenSSL.</summary>
diff --git a/xml/System.Security.Cryptography/ECPoint.xml b/xml/System.Security.Cryptography/ECPoint.xml
index fdd9e913d64..3f92bd3ce8f 100644
--- a/xml/System.Security.Cryptography/ECPoint.xml
+++ b/xml/System.Security.Cryptography/ECPoint.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netstandard-2.0">
       <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/FromBase64Transform.xml b/xml/System.Security.Cryptography/FromBase64Transform.xml
index fe836c44d73..0f2edbc9229 100644
--- a/xml/System.Security.Cryptography/FromBase64Transform.xml
+++ b/xml/System.Security.Cryptography/FromBase64Transform.xml
@@ -719,10 +719,6 @@ For more information about Dispose and Finalize, see [Cleaning Up Unmanaged Reso
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -810,10 +806,6 @@ For more information about Dispose and Finalize, see [Cleaning Up Unmanaged Reso
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/HKDF.xml b/xml/System.Security.Cryptography/HKDF.xml
index 5d9b0a9556f..73380c1a2aa 100644
--- a/xml/System.Security.Cryptography/HKDF.xml
+++ b/xml/System.Security.Cryptography/HKDF.xml
@@ -63,12 +63,6 @@ In situations where the input key material is already a uniformly random bit str
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -167,12 +161,6 @@ In situations where the input key material is already a uniformly random bit str
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -260,12 +248,6 @@ In situations where the input key material is already a uniformly random bit str
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/HMAC.xml b/xml/System.Security.Cryptography/HMAC.xml
index 45746519639..dbb0466db75 100644
--- a/xml/System.Security.Cryptography/HMAC.xml
+++ b/xml/System.Security.Cryptography/HMAC.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -441,12 +437,6 @@ This method is obsolete in .NET 5 and later versions.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -772,12 +762,6 @@ Derived types must override this method.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/HMACMD5.xml b/xml/System.Security.Cryptography/HMACMD5.xml
index 52facbdb244..8efb480a374 100644
--- a/xml/System.Security.Cryptography/HMACMD5.xml
+++ b/xml/System.Security.Cryptography/HMACMD5.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -292,12 +288,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -534,10 +524,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
@@ -582,10 +568,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
@@ -649,10 +631,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
@@ -750,10 +728,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
@@ -812,10 +786,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
@@ -1097,10 +1067,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -1147,12 +1113,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/HMACSHA1.xml b/xml/System.Security.Cryptography/HMACSHA1.xml
index 1acba55f85d..39923c6fe09 100644
--- a/xml/System.Security.Cryptography/HMACSHA1.xml
+++ b/xml/System.Security.Cryptography/HMACSHA1.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -389,12 +385,6 @@ Releases the unmanaged resources used by the <see cref="T:System.Security.Crypto
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -612,12 +602,6 @@ Releases the unmanaged resources used by the <see cref="T:System.Security.Crypto
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -656,12 +640,6 @@ Releases the unmanaged resources used by the <see cref="T:System.Security.Crypto
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -722,12 +700,6 @@ Releases the unmanaged resources used by the <see cref="T:System.Security.Crypto
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -813,12 +785,6 @@ Releases the unmanaged resources used by the <see cref="T:System.Security.Crypto
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
       </ReturnValue>
@@ -871,12 +837,6 @@ Releases the unmanaged resources used by the <see cref="T:System.Security.Crypto
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -1194,12 +1154,6 @@ Releases the unmanaged resources used by the <see cref="T:System.Security.Crypto
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1245,12 +1199,6 @@ Releases the unmanaged resources used by the <see cref="T:System.Security.Crypto
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/HMACSHA256.xml b/xml/System.Security.Cryptography/HMACSHA256.xml
index 8bc83f78450..6738efcc6ee 100644
--- a/xml/System.Security.Cryptography/HMACSHA256.xml
+++ b/xml/System.Security.Cryptography/HMACSHA256.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -282,12 +278,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -501,12 +491,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -545,12 +529,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -611,12 +589,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -702,12 +674,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
       </ReturnValue>
@@ -760,12 +726,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -1041,12 +1001,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1092,12 +1046,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/HMACSHA384.xml b/xml/System.Security.Cryptography/HMACSHA384.xml
index 1b21476fef4..9e40c7f19e1 100644
--- a/xml/System.Security.Cryptography/HMACSHA384.xml
+++ b/xml/System.Security.Cryptography/HMACSHA384.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -281,12 +277,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -500,12 +490,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -544,12 +528,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -610,12 +588,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -701,12 +673,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
       </ReturnValue>
@@ -759,12 +725,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -1109,12 +1069,6 @@ public static void Test()
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1160,12 +1114,6 @@ public static void Test()
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/HMACSHA3_256.xml b/xml/System.Security.Cryptography/HMACSHA3_256.xml
index 054555c7936..0afe0a80b33 100644
--- a/xml/System.Security.Cryptography/HMACSHA3_256.xml
+++ b/xml/System.Security.Cryptography/HMACSHA3_256.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Computes a Hash-based Message Authentication Code (HMAC) by using the SHA3-256 hash function.</summary>
@@ -117,12 +113,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -280,12 +270,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
         <Attributes>
@@ -320,12 +304,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -374,12 +352,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -452,12 +424,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
         <Attributes>
@@ -506,12 +472,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -701,12 +661,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -740,12 +694,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/HMACSHA3_384.xml b/xml/System.Security.Cryptography/HMACSHA3_384.xml
index 999582977c5..639a88ac3ea 100644
--- a/xml/System.Security.Cryptography/HMACSHA3_384.xml
+++ b/xml/System.Security.Cryptography/HMACSHA3_384.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Computes a Hash-based Message Authentication Code (HMAC) by using the SHA3-384 hash function.</summary>
@@ -117,12 +113,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -280,12 +270,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
         <Attributes>
@@ -320,12 +304,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -374,12 +352,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -452,12 +424,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
         <Attributes>
@@ -506,12 +472,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -701,12 +661,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -740,12 +694,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/HMACSHA3_512.xml b/xml/System.Security.Cryptography/HMACSHA3_512.xml
index d536b3e9e57..492621fbd74 100644
--- a/xml/System.Security.Cryptography/HMACSHA3_512.xml
+++ b/xml/System.Security.Cryptography/HMACSHA3_512.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Computes a Hash-based Message Authentication Code (HMAC) by using the SHA3-512 hash function.</summary>
@@ -117,12 +113,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -280,12 +270,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
         <Attributes>
@@ -320,12 +304,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -374,12 +352,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -452,12 +424,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
         <Attributes>
@@ -506,12 +472,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -701,12 +661,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -740,12 +694,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/HMACSHA512.xml b/xml/System.Security.Cryptography/HMACSHA512.xml
index b298f7dc4ec..32f758e98e1 100644
--- a/xml/System.Security.Cryptography/HMACSHA512.xml
+++ b/xml/System.Security.Cryptography/HMACSHA512.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -281,12 +277,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -500,12 +490,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -544,12 +528,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -610,12 +588,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -701,12 +673,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
       </ReturnValue>
@@ -759,12 +725,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -1109,12 +1069,6 @@ public static void Test()
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1160,12 +1114,6 @@ public static void Test()
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/HashAlgorithm.xml b/xml/System.Security.Cryptography/HashAlgorithm.xml
index 916d6493421..93c82348fd1 100644
--- a/xml/System.Security.Cryptography/HashAlgorithm.xml
+++ b/xml/System.Security.Cryptography/HashAlgorithm.xml
@@ -67,10 +67,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -881,10 +877,6 @@ This method is obsolete in .NET 5 and later versions.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
@@ -930,12 +922,6 @@ This method is obsolete in .NET 5 and later versions.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1688,12 +1674,6 @@ For more information about Dispose and Finalize, see [Cleaning Up Unmanaged Reso
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1737,12 +1717,6 @@ For more information about Dispose and Finalize, see [Cleaning Up Unmanaged Reso
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/HashAlgorithmName.xml b/xml/System.Security.Cryptography/HashAlgorithmName.xml
index e2241cd7c90..9a69a9bb941 100644
--- a/xml/System.Security.Cryptography/HashAlgorithmName.xml
+++ b/xml/System.Security.Cryptography/HashAlgorithmName.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the name of a cryptographic hash algorithm.</summary>
@@ -272,12 +268,6 @@ Due to collision problems with MD5 and SHA1, Microsoft recommends a security mod
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.HashAlgorithmName</ReturnType>
       </ReturnValue>
@@ -837,12 +827,6 @@ May be `null` or empty to indicate that no hash algorithm is applicable.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -882,12 +866,6 @@ May be `null` or empty to indicate that no hash algorithm is applicable.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/ICryptoTransform.xml b/xml/System.Security.Cryptography/ICryptoTransform.xml
index 9ead3c07712..7bf1a528fee 100644
--- a/xml/System.Security.Cryptography/ICryptoTransform.xml
+++ b/xml/System.Security.Cryptography/ICryptoTransform.xml
@@ -49,10 +49,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/ICspAsymmetricAlgorithm.xml b/xml/System.Security.Cryptography/ICspAsymmetricAlgorithm.xml
index c44ca1b1bb2..d47cc739e6e 100644
--- a/xml/System.Security.Cryptography/ICspAsymmetricAlgorithm.xml
+++ b/xml/System.Security.Cryptography/ICspAsymmetricAlgorithm.xml
@@ -45,10 +45,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/IncrementalHash.xml b/xml/System.Security.Cryptography/IncrementalHash.xml
index 05ae9200eec..e714c870d12 100644
--- a/xml/System.Security.Cryptography/IncrementalHash.xml
+++ b/xml/System.Security.Cryptography/IncrementalHash.xml
@@ -153,12 +153,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -252,12 +246,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -306,12 +294,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.IncrementalHash</ReturnType>
       </ReturnValue>
@@ -362,12 +344,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.IncrementalHash</ReturnType>
       </ReturnValue>
@@ -435,10 +411,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.IncrementalHash</ReturnType>
@@ -598,12 +570,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -691,12 +657,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/KeyedHashAlgorithm.xml b/xml/System.Security.Cryptography/KeyedHashAlgorithm.xml
index fe2cdaabde2..78d0163e248 100644
--- a/xml/System.Security.Cryptography/KeyedHashAlgorithm.xml
+++ b/xml/System.Security.Cryptography/KeyedHashAlgorithm.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/Kmac128.xml b/xml/System.Security.Cryptography/Kmac128.xml
index b2009cd0e02..adbb2a709f1 100644
--- a/xml/System.Security.Cryptography/Kmac128.xml
+++ b/xml/System.Security.Cryptography/Kmac128.xml
@@ -33,12 +33,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="key" Type="System.Byte[]" />
         <Parameter Name="customizationString" Type="System.Byte[]">
@@ -99,12 +93,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -157,12 +145,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Kmac128</ReturnType>
       </ReturnValue>
@@ -211,12 +193,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -274,12 +250,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -336,12 +306,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
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@@ -386,12 +350,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -606,12 +564,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
         <Attributes>
diff --git a/xml/System.Security.Cryptography/Kmac256.xml b/xml/System.Security.Cryptography/Kmac256.xml
index f0da0a9ea29..a98c62d2d92 100644
--- a/xml/System.Security.Cryptography/Kmac256.xml
+++ b/xml/System.Security.Cryptography/Kmac256.xml
@@ -33,12 +33,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="key" Type="System.Byte[]" />
         <Parameter Name="customizationString" Type="System.Byte[]">
@@ -99,12 +93,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -157,12 +145,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Kmac256</ReturnType>
       </ReturnValue>
@@ -211,12 +193,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -274,12 +250,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -336,12 +306,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
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@@ -386,12 +350,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -606,12 +564,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
         <Attributes>
diff --git a/xml/System.Security.Cryptography/KmacXof128.xml b/xml/System.Security.Cryptography/KmacXof128.xml
index e055f4c12e1..28f3326374e 100644
--- a/xml/System.Security.Cryptography/KmacXof128.xml
+++ b/xml/System.Security.Cryptography/KmacXof128.xml
@@ -33,12 +33,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="key" Type="System.Byte[]" />
         <Parameter Name="customizationString" Type="System.Byte[]">
@@ -99,12 +93,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
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@@ -157,12 +145,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.KmacXof128</ReturnType>
       </ReturnValue>
@@ -211,12 +193,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
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@@ -274,12 +250,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
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       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
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@@ -336,12 +306,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
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       <ReturnValue>
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@@ -386,12 +350,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -606,12 +564,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
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diff --git a/xml/System.Security.Cryptography/KmacXof256.xml b/xml/System.Security.Cryptography/KmacXof256.xml
index ebed3fca74e..ff4a5ece3b6 100644
--- a/xml/System.Security.Cryptography/KmacXof256.xml
+++ b/xml/System.Security.Cryptography/KmacXof256.xml
@@ -33,12 +33,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="key" Type="System.Byte[]" />
         <Parameter Name="customizationString" Type="System.Byte[]">
@@ -99,12 +93,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
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@@ -157,12 +145,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.KmacXof256</ReturnType>
       </ReturnValue>
@@ -211,12 +193,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
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-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
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@@ -274,12 +250,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
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@@ -336,12 +306,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
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       <ReturnValue>
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@@ -386,12 +350,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
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@@ -606,12 +564,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
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diff --git a/xml/System.Security.Cryptography/MD5.xml b/xml/System.Security.Cryptography/MD5.xml
index 41a9f1aecec..94478265d1d 100644
--- a/xml/System.Security.Cryptography/MD5.xml
+++ b/xml/System.Security.Cryptography/MD5.xml
@@ -185,10 +185,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -250,10 +246,6 @@
           <AttributeName Language="C#">[System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
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         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -308,10 +300,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
@@ -356,10 +344,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
@@ -553,10 +537,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
diff --git a/xml/System.Security.Cryptography/MD5CryptoServiceProvider.xml b/xml/System.Security.Cryptography/MD5CryptoServiceProvider.xml
index b4ce0bb2a6c..b1695f7e955 100644
--- a/xml/System.Security.Cryptography/MD5CryptoServiceProvider.xml
+++ b/xml/System.Security.Cryptography/MD5CryptoServiceProvider.xml
@@ -288,10 +288,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -350,10 +346,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/MaskGenerationMethod.xml b/xml/System.Security.Cryptography/MaskGenerationMethod.xml
index 863b9239178..6397608fc63 100644
--- a/xml/System.Security.Cryptography/MaskGenerationMethod.xml
+++ b/xml/System.Security.Cryptography/MaskGenerationMethod.xml
@@ -152,10 +152,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/Oid.xml b/xml/System.Security.Cryptography/Oid.xml
index f422e219e12..5896df4cc5c 100644
--- a/xml/System.Security.Cryptography/Oid.xml
+++ b/xml/System.Security.Cryptography/Oid.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a cryptographic object identifier. This class cannot be inherited.</summary>
@@ -176,12 +172,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="oid" Type="System.Security.Cryptography.Oid" />
       </Parameters>
@@ -242,10 +232,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -435,12 +421,6 @@ In .NET 5 and later versions, this property is *init only*, meaning that its val
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Oid</ReturnType>
       </ReturnValue>
@@ -492,12 +472,6 @@ In .NET 5 and later versions, this property is *init only*, meaning that its val
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Oid</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/OidCollection.xml b/xml/System.Security.Cryptography/OidCollection.xml
index fdc6b2b5783..e0b05c9d754 100644
--- a/xml/System.Security.Cryptography/OidCollection.xml
+++ b/xml/System.Security.Cryptography/OidCollection.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Security.Cryptography.Oid" /> objects. This class cannot be inherited.</summary>
diff --git a/xml/System.Security.Cryptography/OidEnumerator.xml b/xml/System.Security.Cryptography/OidEnumerator.xml
index 182f67bd84f..dc4fe7e0cae 100644
--- a/xml/System.Security.Cryptography/OidEnumerator.xml
+++ b/xml/System.Security.Cryptography/OidEnumerator.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the ability to navigate through an <see cref="T:System.Security.Cryptography.OidCollection" /> object. This class cannot be inherited.</summary>
diff --git a/xml/System.Security.Cryptography/PKCS1MaskGenerationMethod.xml b/xml/System.Security.Cryptography/PKCS1MaskGenerationMethod.xml
index 96bf44ba728..127a9d58e69 100644
--- a/xml/System.Security.Cryptography/PKCS1MaskGenerationMethod.xml
+++ b/xml/System.Security.Cryptography/PKCS1MaskGenerationMethod.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/PasswordDeriveBytes.xml b/xml/System.Security.Cryptography/PasswordDeriveBytes.xml
index 439950844f2..ff2cc73e9a2 100644
--- a/xml/System.Security.Cryptography/PasswordDeriveBytes.xml
+++ b/xml/System.Security.Cryptography/PasswordDeriveBytes.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -280,10 +276,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -364,10 +356,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1189,14 +1177,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
diff --git a/xml/System.Security.Cryptography/ProtectedData.xml b/xml/System.Security.Cryptography/ProtectedData.xml
index c481ebad2ed..a814ec1f535 100644
--- a/xml/System.Security.Cryptography/ProtectedData.xml
+++ b/xml/System.Security.Cryptography/ProtectedData.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods for encrypting and decrypting data. This class cannot be inherited.</summary>
diff --git a/xml/System.Security.Cryptography/RC2.xml b/xml/System.Security.Cryptography/RC2.xml
index 251b1ed788c..40547f280d7 100644
--- a/xml/System.Security.Cryptography/RC2.xml
+++ b/xml/System.Security.Cryptography/RC2.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/RC2CryptoServiceProvider.xml b/xml/System.Security.Cryptography/RC2CryptoServiceProvider.xml
index 718972012c2..b6a890b94c1 100644
--- a/xml/System.Security.Cryptography/RC2CryptoServiceProvider.xml
+++ b/xml/System.Security.Cryptography/RC2CryptoServiceProvider.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/RNGCryptoServiceProvider.xml b/xml/System.Security.Cryptography/RNGCryptoServiceProvider.xml
index 0941748718b..594e7e1544e 100644
--- a/xml/System.Security.Cryptography/RNGCryptoServiceProvider.xml
+++ b/xml/System.Security.Cryptography/RNGCryptoServiceProvider.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -253,10 +249,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -509,12 +501,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -671,12 +657,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/RSA.xml b/xml/System.Security.Cryptography/RSA.xml
index 4867be39cad..592870d7825 100644
--- a/xml/System.Security.Cryptography/RSA.xml
+++ b/xml/System.Security.Cryptography/RSA.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -520,12 +516,6 @@ The decryption operation failed.</exception>
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -782,12 +772,6 @@ The encryption operation failed.</exception>
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1370,12 +1354,6 @@ The encryption operation failed.</exception>
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1448,12 +1426,6 @@ The algorithm-specific key import failed.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1519,12 +1491,6 @@ The algorithm-specific key import failed.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1603,12 +1569,6 @@ The algorithm-specific key import failed.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1687,12 +1647,6 @@ The algorithm-specific key import failed.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1807,12 +1761,6 @@ The algorithm-specific key import failed.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1873,12 +1821,6 @@ The algorithm-specific key import failed.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1931,12 +1873,6 @@ The key import failed.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1988,12 +1924,6 @@ The key import failed.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2067,10 +1997,6 @@ The algorithm-specific key import failed.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2364,12 +2290,6 @@ An error occurred creating the signature.</exception>
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2662,12 +2582,6 @@ An error occurred creating the signature.</exception>
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2827,12 +2741,6 @@ An error occurred creating the signature.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2912,12 +2820,6 @@ The decryption operation failed.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2992,12 +2894,6 @@ The encryption operation failed.</exception>
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3064,12 +2960,6 @@ The encryption operation failed.</exception>
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3130,12 +3020,6 @@ The encryption operation failed.</exception>
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3179,12 +3063,6 @@ The encryption operation failed.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3226,12 +3104,6 @@ The encryption operation failed.</exception>
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3289,12 +3161,6 @@ The encryption operation failed.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3336,12 +3202,6 @@ The encryption operation failed.</exception>
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3397,12 +3257,6 @@ The encryption operation failed.</exception>
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3446,12 +3300,6 @@ The encryption operation failed.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3505,12 +3353,6 @@ Derived types should override this method to avoid the intermediate array creati
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3583,12 +3425,6 @@ An error occurred creating the signature.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3819,12 +3655,6 @@ An error occurred creating the signature.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4030,12 +3860,6 @@ An error occurred creating the signature.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/RSACng.xml b/xml/System.Security.Cryptography/RSACng.xml
index b0f32f98bf1..9ce6d280cf6 100644
--- a/xml/System.Security.Cryptography/RSACng.xml
+++ b/xml/System.Security.Cryptography/RSACng.xml
@@ -221,10 +221,6 @@ If a key is loaded via the <xref:System.Security.Cryptography.RSACng.ImportParam
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -284,10 +280,6 @@ If a key is loaded via the <xref:System.Security.Cryptography.RSACng.ImportParam
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -424,10 +416,6 @@ If a key is loaded via the <xref:System.Security.Cryptography.RSACng.ImportParam
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -508,12 +496,6 @@ If a key is loaded via the <xref:System.Security.Cryptography.RSACng.ImportParam
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -557,12 +539,6 @@ If a key is loaded via the <xref:System.Security.Cryptography.RSACng.ImportParam
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -944,10 +920,6 @@ any already open key is unaffected by this method.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[get: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1029,10 +1001,6 @@ any already open key is unaffected by this method.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.KeySizes[]</ReturnType>
@@ -1102,10 +1070,6 @@ any already open key is unaffected by this method.
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1448,10 +1412,6 @@ any already open key is unaffected by this method.
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/RSACryptoServiceProvider.xml b/xml/System.Security.Cryptography/RSACryptoServiceProvider.xml
index 58c8c0857b1..95b95b3a713 100644
--- a/xml/System.Security.Cryptography/RSACryptoServiceProvider.xml
+++ b/xml/System.Security.Cryptography/RSACryptoServiceProvider.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -288,10 +284,6 @@ If no key is loaded via the <xref:System.Security.Cryptography.RSACryptoServiceP
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -373,10 +365,6 @@ If no key is loaded via the <xref:System.Security.Cryptography.RSACryptoServiceP
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1362,12 +1350,6 @@ If no key is loaded via the <xref:System.Security.Cryptography.RSACryptoServiceP
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1408,12 +1390,6 @@ If no key is loaded via the <xref:System.Security.Cryptography.RSACryptoServiceP
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1541,10 +1517,6 @@ If no key is loaded via the <xref:System.Security.Cryptography.RSACryptoServiceP
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Security.Cryptography/RSAEncryptionPadding.xml b/xml/System.Security.Cryptography/RSAEncryptionPadding.xml
index 0a303fca418..8187ce0ca7c 100644
--- a/xml/System.Security.Cryptography/RSAEncryptionPadding.xml
+++ b/xml/System.Security.Cryptography/RSAEncryptionPadding.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the padding mode and parameters to use with RSA encryption or decryption operations.</summary>
@@ -166,12 +162,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -239,12 +229,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -722,12 +706,6 @@ If the value of the <xref:System.Security.Cryptography.RSAEncryptionPadding.Mode
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -787,12 +765,6 @@ If the value of the <xref:System.Security.Cryptography.RSAEncryptionPadding.Mode
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/RSAOAEPKeyExchangeDeformatter.xml b/xml/System.Security.Cryptography/RSAOAEPKeyExchangeDeformatter.xml
index 4996f39842b..bd4a3ec6558 100644
--- a/xml/System.Security.Cryptography/RSAOAEPKeyExchangeDeformatter.xml
+++ b/xml/System.Security.Cryptography/RSAOAEPKeyExchangeDeformatter.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -303,14 +299,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Security.Cryptography/RSAOAEPKeyExchangeFormatter.xml b/xml/System.Security.Cryptography/RSAOAEPKeyExchangeFormatter.xml
index f898ff6e85e..859fad831fa 100644
--- a/xml/System.Security.Cryptography/RSAOAEPKeyExchangeFormatter.xml
+++ b/xml/System.Security.Cryptography/RSAOAEPKeyExchangeFormatter.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -180,12 +176,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="key" Type="System.Security.Cryptography.AsymmetricAlgorithm" />
       </Parameters>
@@ -243,10 +233,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -309,12 +295,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -560,12 +540,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/RSAOpenSsl.xml b/xml/System.Security.Cryptography/RSAOpenSsl.xml
index c5365052884..b0922984f4e 100644
--- a/xml/System.Security.Cryptography/RSAOpenSsl.xml
+++ b/xml/System.Security.Cryptography/RSAOpenSsl.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an implementation of the RSA algorithm backed by OpenSSL.</summary>
diff --git a/xml/System.Security.Cryptography/RSAPKCS1KeyExchangeDeformatter.xml b/xml/System.Security.Cryptography/RSAPKCS1KeyExchangeDeformatter.xml
index 3da6778db48..75248728856 100644
--- a/xml/System.Security.Cryptography/RSAPKCS1KeyExchangeDeformatter.xml
+++ b/xml/System.Security.Cryptography/RSAPKCS1KeyExchangeDeformatter.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -180,12 +176,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="key" Type="System.Security.Cryptography.AsymmetricAlgorithm" />
       </Parameters>
@@ -233,10 +223,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -396,12 +382,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/RSAPKCS1KeyExchangeFormatter.xml b/xml/System.Security.Cryptography/RSAPKCS1KeyExchangeFormatter.xml
index ecb6dce3d37..7d7bdee1ee7 100644
--- a/xml/System.Security.Cryptography/RSAPKCS1KeyExchangeFormatter.xml
+++ b/xml/System.Security.Cryptography/RSAPKCS1KeyExchangeFormatter.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -430,14 +426,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.RandomNumberGenerator</ReturnType>
diff --git a/xml/System.Security.Cryptography/RSAPKCS1SignatureDeformatter.xml b/xml/System.Security.Cryptography/RSAPKCS1SignatureDeformatter.xml
index 06104f1ba20..643df0d886d 100644
--- a/xml/System.Security.Cryptography/RSAPKCS1SignatureDeformatter.xml
+++ b/xml/System.Security.Cryptography/RSAPKCS1SignatureDeformatter.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/RSAPKCS1SignatureFormatter.xml b/xml/System.Security.Cryptography/RSAPKCS1SignatureFormatter.xml
index 1d39bee3f4c..ab493871bc1 100644
--- a/xml/System.Security.Cryptography/RSAPKCS1SignatureFormatter.xml
+++ b/xml/System.Security.Cryptography/RSAPKCS1SignatureFormatter.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/RSAParameters.xml b/xml/System.Security.Cryptography/RSAParameters.xml
index da95c8f6e02..9fdeda09834 100644
--- a/xml/System.Security.Cryptography/RSAParameters.xml
+++ b/xml/System.Security.Cryptography/RSAParameters.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/RSASignaturePadding.xml b/xml/System.Security.Cryptography/RSASignaturePadding.xml
index 9314d9b4d94..8abf91ffa0c 100644
--- a/xml/System.Security.Cryptography/RSASignaturePadding.xml
+++ b/xml/System.Security.Cryptography/RSASignaturePadding.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the padding mode and parameters to use with RSA signature creation or verification operations.</summary>
@@ -117,12 +113,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -190,12 +180,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -349,12 +333,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -416,12 +394,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/RandomNumberGenerator.xml b/xml/System.Security.Cryptography/RandomNumberGenerator.xml
index 6c6bf0798df..c971d2bcbbb 100644
--- a/xml/System.Security.Cryptography/RandomNumberGenerator.xml
+++ b/xml/System.Security.Cryptography/RandomNumberGenerator.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -434,12 +430,6 @@ To create a random number generator, call the @System.Security.Cryptography.Rand
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -593,12 +583,6 @@ To create a random number generator, call the @System.Security.Cryptography.Rand
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -725,12 +709,6 @@ To create a random number generator, call the @System.Security.Cryptography.Rand
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -932,12 +910,6 @@ To create a random number generator, call the @System.Security.Cryptography.Rand
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1064,12 +1036,6 @@ To create a random number generator, call the @System.Security.Cryptography.Rand
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1104,12 +1070,6 @@ To create a random number generator, call the @System.Security.Cryptography.Rand
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
         <Attributes>
@@ -1157,12 +1117,6 @@ To create a random number generator, call the @System.Security.Cryptography.Rand
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/Rfc2898DeriveBytes.xml b/xml/System.Security.Cryptography/Rfc2898DeriveBytes.xml
index 78b56810860..adf1a32661a 100644
--- a/xml/System.Security.Cryptography/Rfc2898DeriveBytes.xml
+++ b/xml/System.Security.Cryptography/Rfc2898DeriveBytes.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -1039,12 +1035,6 @@ For more information about PBKDF2, see [RFC 2898](https://www.rfc-editor.org/inf
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1100,12 +1090,6 @@ For more information about PBKDF2, see [RFC 2898](https://www.rfc-editor.org/inf
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1156,12 +1140,6 @@ For more information about PBKDF2, see [RFC 2898](https://www.rfc-editor.org/inf
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1229,12 +1207,6 @@ The `password` will be converted to bytes using the UTF8 encoding. For
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/Rijndael.xml b/xml/System.Security.Cryptography/Rijndael.xml
index 80e5d9f4e77..228760ed2b6 100644
--- a/xml/System.Security.Cryptography/Rijndael.xml
+++ b/xml/System.Security.Cryptography/Rijndael.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/RijndaelManaged.xml b/xml/System.Security.Cryptography/RijndaelManaged.xml
index 8f8f7e52223..b62fe172875 100644
--- a/xml/System.Security.Cryptography/RijndaelManaged.xml
+++ b/xml/System.Security.Cryptography/RijndaelManaged.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/SHA1.xml b/xml/System.Security.Cryptography/SHA1.xml
index b920bd45071..14506f3459f 100644
--- a/xml/System.Security.Cryptography/SHA1.xml
+++ b/xml/System.Security.Cryptography/SHA1.xml
@@ -173,10 +173,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -244,10 +240,6 @@
           <AttributeName Language="C#">[System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -289,12 +281,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -333,12 +319,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -508,12 +488,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/SHA1CryptoServiceProvider.xml b/xml/System.Security.Cryptography/SHA1CryptoServiceProvider.xml
index 759b770d1ff..c69e2366f51 100644
--- a/xml/System.Security.Cryptography/SHA1CryptoServiceProvider.xml
+++ b/xml/System.Security.Cryptography/SHA1CryptoServiceProvider.xml
@@ -285,10 +285,6 @@ Due to collision problems with SHA1, Microsoft recommends a security model based
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -347,10 +343,6 @@ Due to collision problems with SHA1, Microsoft recommends a security model based
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/SHA1Managed.xml b/xml/System.Security.Cryptography/SHA1Managed.xml
index 958f59b2f5f..7bddd5fbf99 100644
--- a/xml/System.Security.Cryptography/SHA1Managed.xml
+++ b/xml/System.Security.Cryptography/SHA1Managed.xml
@@ -255,12 +255,6 @@ This method is called by the public <xref:System.Security.Cryptography.HashAlgor
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -317,12 +311,6 @@ This method is called by the public <xref:System.Security.Cryptography.HashAlgor
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/SHA256.xml b/xml/System.Security.Cryptography/SHA256.xml
index c9a82f7adc1..516c720ebd6 100644
--- a/xml/System.Security.Cryptography/SHA256.xml
+++ b/xml/System.Security.Cryptography/SHA256.xml
@@ -183,10 +183,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -248,10 +244,6 @@
           <AttributeName Language="C#">[System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -307,12 +299,6 @@ The .NET Framework includes the implementations and their associated hashName va
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -351,12 +337,6 @@ The .NET Framework includes the implementations and their associated hashName va
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -522,12 +502,6 @@ The .NET Framework includes the implementations and their associated hashName va
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/SHA256CryptoServiceProvider.xml b/xml/System.Security.Cryptography/SHA256CryptoServiceProvider.xml
index 524a3d6001f..7cbe957f09d 100644
--- a/xml/System.Security.Cryptography/SHA256CryptoServiceProvider.xml
+++ b/xml/System.Security.Cryptography/SHA256CryptoServiceProvider.xml
@@ -224,10 +224,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -282,10 +278,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/SHA256Managed.xml b/xml/System.Security.Cryptography/SHA256Managed.xml
index 05daa26b094..666467d246e 100644
--- a/xml/System.Security.Cryptography/SHA256Managed.xml
+++ b/xml/System.Security.Cryptography/SHA256Managed.xml
@@ -274,12 +274,6 @@ This method is called by the public <xref:System.Security.Cryptography.HashAlgor
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -345,12 +339,6 @@ This method is called by the public <xref:System.Security.Cryptography.HashAlgor
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/SHA384.xml b/xml/System.Security.Cryptography/SHA384.xml
index dcc61a2638b..542f32aef4b 100644
--- a/xml/System.Security.Cryptography/SHA384.xml
+++ b/xml/System.Security.Cryptography/SHA384.xml
@@ -182,10 +182,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -247,10 +243,6 @@
           <AttributeName Language="C#">[System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -293,12 +285,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -337,12 +323,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -512,12 +492,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/SHA384CryptoServiceProvider.xml b/xml/System.Security.Cryptography/SHA384CryptoServiceProvider.xml
index 47dea595410..a4214a40879 100644
--- a/xml/System.Security.Cryptography/SHA384CryptoServiceProvider.xml
+++ b/xml/System.Security.Cryptography/SHA384CryptoServiceProvider.xml
@@ -224,10 +224,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -282,10 +278,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/SHA384Managed.xml b/xml/System.Security.Cryptography/SHA384Managed.xml
index 35f5a9c6ef1..e37ed2e6b5b 100644
--- a/xml/System.Security.Cryptography/SHA384Managed.xml
+++ b/xml/System.Security.Cryptography/SHA384Managed.xml
@@ -275,10 +275,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -350,10 +346,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/SHA3_256.xml b/xml/System.Security.Cryptography/SHA3_256.xml
index fd90ea0d46f..8c051417bb4 100644
--- a/xml/System.Security.Cryptography/SHA3_256.xml
+++ b/xml/System.Security.Cryptography/SHA3_256.xml
@@ -50,12 +50,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.SHA3_256</ReturnType>
       </ReturnValue>
@@ -80,12 +74,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -115,12 +103,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -263,12 +245,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
         <Attributes>
diff --git a/xml/System.Security.Cryptography/SHA3_384.xml b/xml/System.Security.Cryptography/SHA3_384.xml
index 9173d383be6..d0fba93d4aa 100644
--- a/xml/System.Security.Cryptography/SHA3_384.xml
+++ b/xml/System.Security.Cryptography/SHA3_384.xml
@@ -50,12 +50,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.SHA3_384</ReturnType>
       </ReturnValue>
@@ -80,12 +74,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -115,12 +103,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -262,12 +244,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
         <Attributes>
diff --git a/xml/System.Security.Cryptography/SHA3_512.xml b/xml/System.Security.Cryptography/SHA3_512.xml
index 2b587646007..f8384e27441 100644
--- a/xml/System.Security.Cryptography/SHA3_512.xml
+++ b/xml/System.Security.Cryptography/SHA3_512.xml
@@ -50,12 +50,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.SHA3_512</ReturnType>
       </ReturnValue>
@@ -80,12 +74,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -115,12 +103,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -262,12 +244,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
         <Attributes>
diff --git a/xml/System.Security.Cryptography/SHA512.xml b/xml/System.Security.Cryptography/SHA512.xml
index 999e639c70f..d4ae22589d6 100644
--- a/xml/System.Security.Cryptography/SHA512.xml
+++ b/xml/System.Security.Cryptography/SHA512.xml
@@ -184,10 +184,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -249,10 +245,6 @@
           <AttributeName Language="C#">[System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -302,12 +294,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -346,12 +332,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -521,12 +501,6 @@
       <AssemblyInfo>
         <AssemblyName>mscorlib</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/SHA512CryptoServiceProvider.xml b/xml/System.Security.Cryptography/SHA512CryptoServiceProvider.xml
index b58bdf446fb..9fbfb7406ce 100644
--- a/xml/System.Security.Cryptography/SHA512CryptoServiceProvider.xml
+++ b/xml/System.Security.Cryptography/SHA512CryptoServiceProvider.xml
@@ -224,10 +224,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -282,10 +278,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/SHA512Managed.xml b/xml/System.Security.Cryptography/SHA512Managed.xml
index d4a1c3e5f0f..87c92b9658d 100644
--- a/xml/System.Security.Cryptography/SHA512Managed.xml
+++ b/xml/System.Security.Cryptography/SHA512Managed.xml
@@ -273,10 +273,6 @@ This method is called by the public <xref:System.Security.Cryptography.HashAlgor
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -348,10 +344,6 @@ This method is called by the public <xref:System.Security.Cryptography.HashAlgor
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/SP800108HmacCounterKdf.xml b/xml/System.Security.Cryptography/SP800108HmacCounterKdf.xml
index c39288d38a8..b4ac7e47e1a 100644
--- a/xml/System.Security.Cryptography/SP800108HmacCounterKdf.xml
+++ b/xml/System.Security.Cryptography/SP800108HmacCounterKdf.xml
@@ -61,12 +61,6 @@
         <AssemblyName>Microsoft.Bcl.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="key" Type="System.Byte[]" />
         <Parameter Name="hashAlgorithm" Type="System.Security.Cryptography.HashAlgorithmName" />
@@ -157,12 +151,6 @@
         <AssemblyName>Microsoft.Bcl.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -233,12 +221,6 @@
         <AssemblyName>Microsoft.Bcl.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -562,12 +544,6 @@
         <AssemblyName>Microsoft.Bcl.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -808,12 +784,6 @@
         <AssemblyName>Microsoft.Bcl.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/SafeEvpPKeyHandle.xml b/xml/System.Security.Cryptography/SafeEvpPKeyHandle.xml
index 56ae15abd0f..170755701e1 100644
--- a/xml/System.Security.Cryptography/SafeEvpPKeyHandle.xml
+++ b/xml/System.Security.Cryptography/SafeEvpPKeyHandle.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="EVP_PKEY*" /> pointer type from OpenSSL.</summary>
diff --git a/xml/System.Security.Cryptography/Shake128.xml b/xml/System.Security.Cryptography/Shake128.xml
index acceffe8e64..7fddae8afa7 100644
--- a/xml/System.Security.Cryptography/Shake128.xml
+++ b/xml/System.Security.Cryptography/Shake128.xml
@@ -56,12 +56,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -115,12 +109,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Shake128</ReturnType>
       </ReturnValue>
@@ -172,12 +160,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -233,12 +215,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -294,12 +270,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -334,12 +304,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -482,12 +446,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
         <Attributes>
@@ -602,12 +560,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/Shake256.xml b/xml/System.Security.Cryptography/Shake256.xml
index 3d944995246..3e1041a325d 100644
--- a/xml/System.Security.Cryptography/Shake256.xml
+++ b/xml/System.Security.Cryptography/Shake256.xml
@@ -56,12 +56,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -115,12 +109,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.Shake256</ReturnType>
       </ReturnValue>
@@ -172,12 +160,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -233,12 +215,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -294,12 +270,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -334,12 +304,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -482,12 +446,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Byte[]&gt;</ReturnType>
         <Attributes>
@@ -602,12 +560,6 @@
         <AssemblyName>System.Security.Cryptography</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/SignatureDescription.xml b/xml/System.Security.Cryptography/SignatureDescription.xml
index 278fb4d7d28..b5a728a3b6a 100644
--- a/xml/System.Security.Cryptography/SignatureDescription.xml
+++ b/xml/System.Security.Cryptography/SignatureDescription.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -153,12 +149,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="el" Type="System.Security.SecurityElement" />
       </Parameters>
@@ -209,10 +199,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("CreateDeformatter is not trim compatible because the algorithm implementation referenced by DeformatterAlgorithm might be removed.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("CreateDeformatter is not trim compatible because the algorithm implementation referenced by DeformatterAlgorithm might be removed.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -327,10 +313,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("CreateFormatter is not trim compatible because the algorithm implementation referenced by FormatterAlgorithm might be removed.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("CreateFormatter is not trim compatible because the algorithm implementation referenced by FormatterAlgorithm might be removed.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/SymmetricAlgorithm.xml b/xml/System.Security.Cryptography/SymmetricAlgorithm.xml
index 0086792d17e..db8e1e427a6 100644
--- a/xml/System.Security.Cryptography/SymmetricAlgorithm.xml
+++ b/xml/System.Security.Cryptography/SymmetricAlgorithm.xml
@@ -352,10 +352,6 @@
           <AttributeName Language="C#">[System.Obsolete("The default implementation of this cryptography algorithm is not supported.", DiagnosticId="SYSLIB0007", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("The default implementation of this cryptography algorithm is not supported.", DiagnosticId="SYSLIB0007", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -427,10 +423,6 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
           <AttributeName Language="C#">[System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -495,12 +487,6 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.ICryptoTransform</ReturnType>
       </ReturnValue>
@@ -555,12 +541,6 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.ICryptoTransform</ReturnType>
       </ReturnValue>
@@ -636,12 +616,6 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.ICryptoTransform</ReturnType>
       </ReturnValue>
@@ -707,12 +681,6 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.ICryptoTransform</ReturnType>
       </ReturnValue>
@@ -766,12 +734,6 @@ We recommend that you specify the algorithm by calling the <xref:System.Security
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -936,12 +898,6 @@ This method's behavior is defined by <xref:System.Security.Cryptography.Symmetri
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1140,12 +1096,6 @@ The buffer in <paramref name="destination" /> is too small to hold the plaintext
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1437,12 +1387,6 @@ This method's behavior is defined by <xref:System.Security.Cryptography.Symmetri
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1607,12 +1551,6 @@ This method's behavior is defined by <xref:System.Security.Cryptography.Symmetri
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -1807,12 +1745,6 @@ The feedback size is not valid for the algorithm.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -2403,14 +2335,6 @@ Allows an <see cref="T:System.Object" /> to attempt to free resources and perfor
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
@@ -2533,14 +2457,6 @@ Allows an <see cref="T:System.Object" /> to attempt to free resources and perfor
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
@@ -2771,10 +2687,6 @@ Allows an <see cref="T:System.Object" /> to attempt to free resources and perfor
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.KeySizes[]</ReturnType>
@@ -2904,10 +2816,6 @@ Allows an <see cref="T:System.Object" /> to attempt to free resources and perfor
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.Cryptography.KeySizes[]</ReturnType>
diff --git a/xml/System.Security.Cryptography/ToBase64Transform.xml b/xml/System.Security.Cryptography/ToBase64Transform.xml
index 3b27618bd28..624d1c8a76d 100644
--- a/xml/System.Security.Cryptography/ToBase64Transform.xml
+++ b/xml/System.Security.Cryptography/ToBase64Transform.xml
@@ -689,12 +689,6 @@ For more information about `Dispose` and `Finalize`, see [Cleaning Up Unmanaged
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -779,12 +773,6 @@ For more information about `Dispose` and `Finalize`, see [Cleaning Up Unmanaged
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/TripleDES.xml b/xml/System.Security.Cryptography/TripleDES.xml
index 716df5219ad..884fc368ddd 100644
--- a/xml/System.Security.Cryptography/TripleDES.xml
+++ b/xml/System.Security.Cryptography/TripleDES.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Cryptography/TripleDESCng.xml b/xml/System.Security.Cryptography/TripleDESCng.xml
index 3097819b6b5..057148f1216 100644
--- a/xml/System.Security.Cryptography/TripleDESCng.xml
+++ b/xml/System.Security.Cryptography/TripleDESCng.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a Cryptography Next Generation (CNG) implementation of the Triple Data Encryption Standard (3DES) algorithm.</summary>
@@ -869,12 +865,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -916,12 +906,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -965,12 +949,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1010,12 +988,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1057,12 +1029,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1106,12 +1072,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Cryptography/TripleDESCryptoServiceProvider.xml b/xml/System.Security.Cryptography/TripleDESCryptoServiceProvider.xml
index 97da257fffb..cc28852d8fb 100644
--- a/xml/System.Security.Cryptography/TripleDESCryptoServiceProvider.xml
+++ b/xml/System.Security.Cryptography/TripleDESCryptoServiceProvider.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Permissions/SecurityAttribute.xml b/xml/System.Security.Permissions/SecurityAttribute.xml
index 940066c1e1d..a0ad2b7f0b0 100644
--- a/xml/System.Security.Permissions/SecurityAttribute.xml
+++ b/xml/System.Security.Permissions/SecurityAttribute.xml
@@ -271,12 +271,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Security.Permissions</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.IPermission</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Permissions/SecurityPermissionAttribute.xml b/xml/System.Security.Permissions/SecurityPermissionAttribute.xml
index cc3294e7e57..03c62e61904 100644
--- a/xml/System.Security.Permissions/SecurityPermissionAttribute.xml
+++ b/xml/System.Security.Permissions/SecurityPermissionAttribute.xml
@@ -623,12 +623,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Security.Permissions</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.IPermission</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Policy/Evidence.xml b/xml/System.Security.Policy/Evidence.xml
index 3c3bf6150cd..597b1546222 100644
--- a/xml/System.Security.Policy/Evidence.xml
+++ b/xml/System.Security.Policy/Evidence.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -702,10 +698,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -1016,10 +1008,6 @@ Console::WriteLine( "Does the copy equal the current evidence? {0}", myEvidence-
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -1254,10 +1242,6 @@ Console::WriteLine( "HashCode = {0}", myEvidence->GetHashCode() );
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.Security.Policy/EvidenceBase.xml b/xml/System.Security.Policy/EvidenceBase.xml
index 6f4747633de..476353185cb 100644
--- a/xml/System.Security.Policy/EvidenceBase.xml
+++ b/xml/System.Security.Policy/EvidenceBase.xml
@@ -137,10 +137,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security.Principal/GenericIdentity.xml b/xml/System.Security.Principal/GenericIdentity.xml
index c0269154f03..56ff5ecca48 100644
--- a/xml/System.Security.Principal/GenericIdentity.xml
+++ b/xml/System.Security.Principal/GenericIdentity.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Security.Principal/GenericPrincipal.xml b/xml/System.Security.Principal/GenericPrincipal.xml
index 090ed9c52b1..0b6c6fe714a 100644
--- a/xml/System.Security.Principal/GenericPrincipal.xml
+++ b/xml/System.Security.Principal/GenericPrincipal.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -255,12 +251,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Principal/IIdentity.xml b/xml/System.Security.Principal/IIdentity.xml
index ac4c42390a6..a193ded1958 100644
--- a/xml/System.Security.Principal/IIdentity.xml
+++ b/xml/System.Security.Principal/IIdentity.xml
@@ -48,10 +48,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Security.Principal/IPrincipal.xml b/xml/System.Security.Principal/IPrincipal.xml
index 8a070a9a1f2..d9a568063e9 100644
--- a/xml/System.Security.Principal/IPrincipal.xml
+++ b/xml/System.Security.Principal/IPrincipal.xml
@@ -48,10 +48,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -151,12 +147,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Principal/IdentityNotMappedException.xml b/xml/System.Security.Principal/IdentityNotMappedException.xml
index 589a334523b..b201aa658e2 100644
--- a/xml/System.Security.Principal/IdentityNotMappedException.xml
+++ b/xml/System.Security.Principal/IdentityNotMappedException.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -118,12 +114,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
       </Parameters>
@@ -158,12 +148,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
         <Parameter Name="inner" Type="System.Exception" />
diff --git a/xml/System.Security.Principal/IdentityReference.xml b/xml/System.Security.Principal/IdentityReference.xml
index fe5120d2434..314d9eec0c8 100644
--- a/xml/System.Security.Principal/IdentityReference.xml
+++ b/xml/System.Security.Principal/IdentityReference.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -69,12 +65,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -188,12 +178,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -237,12 +221,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Principal/IdentityReferenceCollection.xml b/xml/System.Security.Principal/IdentityReferenceCollection.xml
index b2daf212db4..571bfae41ac 100644
--- a/xml/System.Security.Principal/IdentityReferenceCollection.xml
+++ b/xml/System.Security.Principal/IdentityReferenceCollection.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.Security.Principal/NTAccount.xml b/xml/System.Security.Principal/NTAccount.xml
index b96e91a7d77..c5a386afac4 100644
--- a/xml/System.Security.Principal/NTAccount.xml
+++ b/xml/System.Security.Principal/NTAccount.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -180,12 +176,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -308,12 +298,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -355,12 +339,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Principal/SecurityIdentifier.xml b/xml/System.Security.Principal/SecurityIdentifier.xml
index 51ca35209ff..df7db2ef47c 100644
--- a/xml/System.Security.Principal/SecurityIdentifier.xml
+++ b/xml/System.Security.Principal/SecurityIdentifier.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -196,10 +192,6 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -272,10 +264,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[get: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -351,12 +339,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -422,12 +404,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -819,12 +795,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -866,12 +836,6 @@
         <AssemblyVersion>2.0.5.0</AssemblyVersion>
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security.Principal/WindowsIdentity.xml b/xml/System.Security.Principal/WindowsIdentity.xml
index 98913f56337..8549e901746 100644
--- a/xml/System.Security.Principal/WindowsIdentity.xml
+++ b/xml/System.Security.Principal/WindowsIdentity.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -711,10 +707,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[get: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1195,10 +1187,6 @@ Application code does not call this method; it is automatically invoked during g
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1305,10 +1293,6 @@ Application code does not call this method; it is automatically invoked during g
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[get: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1817,10 +1801,6 @@ Application code does not call this method; it is automatically invoked during g
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -2386,10 +2366,6 @@ public class ImpersonationDemo
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.Security.Principal/WindowsPrincipal.xml b/xml/System.Security.Principal/WindowsPrincipal.xml
index e5e32052476..82db87b110f 100644
--- a/xml/System.Security.Principal/WindowsPrincipal.xml
+++ b/xml/System.Security.Principal/WindowsPrincipal.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Security/IPermission.xml b/xml/System.Security/IPermission.xml
index 163ac010c04..bf5041f448c 100644
--- a/xml/System.Security/IPermission.xml
+++ b/xml/System.Security/IPermission.xml
@@ -73,10 +73,6 @@
       <AttributeName Language="C#">[System.Obsolete("Code Access Security is not supported or honored by the runtime.", DiagnosticId="SYSLIB0003", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("Code Access Security is not supported or honored by the runtime.", DiagnosticId="SYSLIB0003", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -161,12 +157,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Security.Permissions</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.IPermission</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security/ISecurityEncodable.xml b/xml/System.Security/ISecurityEncodable.xml
index 931c7c73247..e8376655512 100644
--- a/xml/System.Security/ISecurityEncodable.xml
+++ b/xml/System.Security/ISecurityEncodable.xml
@@ -65,10 +65,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -209,12 +205,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Security.Permissions</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.SecurityElement</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security/PermissionSet.xml b/xml/System.Security/PermissionSet.xml
index 17228d5b656..e4ebb4f6f62 100644
--- a/xml/System.Security/PermissionSet.xml
+++ b/xml/System.Security/PermissionSet.xml
@@ -83,10 +83,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -566,10 +562,6 @@
           <AttributeName Language="C#">[System.Obsolete]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Obsolete("This method is obsolete and shoud no longer be used.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This method is obsolete and shoud no longer be used.")&gt;]</AttributeName>
@@ -637,12 +629,6 @@
         <AssemblyName>System.Private.CoreLib</AssemblyName>
         <AssemblyVersion>6.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.PermissionSet</ReturnType>
       </ReturnValue>
@@ -710,10 +696,6 @@
         <AssemblyVersion>6.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1068,12 +1050,6 @@
         <AssemblyName>System.Private.CoreLib</AssemblyName>
         <AssemblyVersion>6.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1145,12 +1121,6 @@
         <AssemblyName>System.Private.CoreLib</AssemblyName>
         <AssemblyVersion>6.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IEnumerator</ReturnType>
       </ReturnValue>
@@ -1214,12 +1184,6 @@
         <AssemblyName>System.Private.CoreLib</AssemblyName>
         <AssemblyVersion>6.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IEnumerator</ReturnType>
       </ReturnValue>
@@ -2291,10 +2255,6 @@ myPermSet.RemovePermission(typeof(FileIOPermission));
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -2412,10 +2372,6 @@ myPermSet.RemovePermission(typeof(FileIOPermission));
         <AssemblyVersion>6.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security/SecureString.xml b/xml/System.Security/SecureString.xml
index 8d574a649ae..c8d5f199611 100644
--- a/xml/System.Security/SecureString.xml
+++ b/xml/System.Security/SecureString.xml
@@ -409,10 +409,6 @@ The following example demonstrates how to use a <xref:System.Security.SecureStri
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security/SecureStringMarshal.xml b/xml/System.Security/SecureStringMarshal.xml
index 0e65becfd05..cd198a20c40 100644
--- a/xml/System.Security/SecureStringMarshal.xml
+++ b/xml/System.Security/SecureStringMarshal.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1">
       <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
diff --git a/xml/System.Security/SecurityElement.xml b/xml/System.Security/SecurityElement.xml
index 1e1c4a7f148..4a6a3075f1e 100644
--- a/xml/System.Security/SecurityElement.xml
+++ b/xml/System.Security/SecurityElement.xml
@@ -72,10 +72,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -174,12 +170,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Security.Permissions</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="tag" Type="System.String" />
       </Parameters>
@@ -249,12 +239,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Security.Permissions</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="tag" Type="System.String" />
         <Parameter Name="text" Type="System.String">
@@ -323,12 +307,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Security.Permissions</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -408,12 +386,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Security.Permissions</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -485,12 +457,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Security.Permissions</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -707,10 +673,6 @@
         <AssemblyName>System.Security.Permissions</AssemblyName>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -934,12 +896,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Security.Permissions</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.SecurityElement</ReturnType>
       </ReturnValue>
@@ -1325,12 +1281,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Security.Permissions</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Security.SecurityElement</ReturnType>
       </ReturnValue>
@@ -1408,12 +1358,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Security.Permissions</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1502,14 +1446,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1657,12 +1593,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Security.Permissions</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Security/SecurityException.xml b/xml/System.Security/SecurityException.xml
index 560b73b77f0..f605254abd1 100644
--- a/xml/System.Security/SecurityException.xml
+++ b/xml/System.Security/SecurityException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -270,10 +266,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1013,10 +1005,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -1444,10 +1432,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Security/VerificationException.xml b/xml/System.Security/VerificationException.xml
index 548fb48062c..b2234f44f93 100644
--- a/xml/System.Security/VerificationException.xml
+++ b/xml/System.Security/VerificationException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -222,10 +218,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.ServiceProcess/ServiceBase.xml b/xml/System.ServiceProcess/ServiceBase.xml
index 7fde7ddc49b..2cf62dac687 100644
--- a/xml/System.ServiceProcess/ServiceBase.xml
+++ b/xml/System.ServiceProcess/ServiceBase.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Designer("Microsoft.VisualStudio.Install.UserNTServiceDesigner, Microsoft.VisualStudio, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.ComponentModel.Design.IRootDesigner")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Designer("Microsoft.VisualStudio.Install.UserNTServiceDesigner, Microsoft.VisualStudio, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.ComponentModel.Design.IRootDesigner")&gt;]</AttributeName>
diff --git a/xml/System.ServiceProcess/ServiceController.xml b/xml/System.ServiceProcess/ServiceController.xml
index 49312e68c73..88e7515e87a 100644
--- a/xml/System.ServiceProcess/ServiceController.xml
+++ b/xml/System.ServiceProcess/ServiceController.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.ComponentModel.Designer("System.ServiceProcess.Design.ServiceControllerDesigner, System.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.Designer("System.ServiceProcess.Design.ServiceControllerDesigner, System.Design, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")&gt;]</AttributeName>
diff --git a/xml/System.ServiceProcess/ServiceProcessDescriptionAttribute.xml b/xml/System.ServiceProcess/ServiceProcessDescriptionAttribute.xml
index 0211c7524ca..fd2a354d620 100644
--- a/xml/System.ServiceProcess/ServiceProcessDescriptionAttribute.xml
+++ b/xml/System.ServiceProcess/ServiceProcessDescriptionAttribute.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies a description for a property or event.</summary>
diff --git a/xml/System.ServiceProcess/SessionChangeDescription.xml b/xml/System.ServiceProcess/SessionChangeDescription.xml
index ac521bf17af..13d46e24e87 100644
--- a/xml/System.ServiceProcess/SessionChangeDescription.xml
+++ b/xml/System.ServiceProcess/SessionChangeDescription.xml
@@ -87,12 +87,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.ServiceProcess/TimeoutException.xml b/xml/System.ServiceProcess/TimeoutException.xml
index 096c92c1788..290989e8e84 100644
--- a/xml/System.ServiceProcess/TimeoutException.xml
+++ b/xml/System.ServiceProcess/TimeoutException.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -162,10 +158,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0;netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0" />
diff --git a/xml/System.Text.Encodings.Web/HtmlEncoder.xml b/xml/System.Text.Encodings.Web/HtmlEncoder.xml
index 36a9de7258b..237fb7749c9 100644
--- a/xml/System.Text.Encodings.Web/HtmlEncoder.xml
+++ b/xml/System.Text.Encodings.Web/HtmlEncoder.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an HTML character encoding.</summary>
diff --git a/xml/System.Text.Encodings.Web/JavaScriptEncoder.xml b/xml/System.Text.Encodings.Web/JavaScriptEncoder.xml
index 1858da17928..6be8f2870a9 100644
--- a/xml/System.Text.Encodings.Web/JavaScriptEncoder.xml
+++ b/xml/System.Text.Encodings.Web/JavaScriptEncoder.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a JavaScript character encoding.</summary>
diff --git a/xml/System.Text.Encodings.Web/TextEncoder.xml b/xml/System.Text.Encodings.Web/TextEncoder.xml
index ac68b56df0a..eaffcd956c0 100644
--- a/xml/System.Text.Encodings.Web/TextEncoder.xml
+++ b/xml/System.Text.Encodings.Web/TextEncoder.xml
@@ -76,12 +76,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -116,12 +110,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -154,12 +142,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -205,12 +187,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text.Encodings.Web/TextEncoderSettings.xml b/xml/System.Text.Encodings.Web/TextEncoderSettings.xml
index 83a45d83c57..453a6990af0 100644
--- a/xml/System.Text.Encodings.Web/TextEncoderSettings.xml
+++ b/xml/System.Text.Encodings.Web/TextEncoderSettings.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a filter that allows only certain Unicode code points.</summary>
diff --git a/xml/System.Text.Encodings.Web/UrlEncoder.xml b/xml/System.Text.Encodings.Web/UrlEncoder.xml
index 8a384db86ff..ac851b9effc 100644
--- a/xml/System.Text.Encodings.Web/UrlEncoder.xml
+++ b/xml/System.Text.Encodings.Web/UrlEncoder.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a URL character encoding.</summary>
diff --git a/xml/System.Text.Json.Nodes/JsonArray.xml b/xml/System.Text.Json.Nodes/JsonArray.xml
index 11d3da8540c..312e9ba46f2 100644
--- a/xml/System.Text.Json.Nodes/JsonArray.xml
+++ b/xml/System.Text.Json.Nodes/JsonArray.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a mutable JSON array.</summary>
@@ -452,10 +448,6 @@ It is safe to perform multiple concurrent read operations on a <xref:System.Text
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IteratorStateMachine(typeof(System.Text.Json.Nodes.JsonArray+&lt;GetValues&gt;d__13&lt;&gt;))]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IteratorStateMachine(typeof(System.Text.Json.Nodes.JsonArray+&lt;GetValues&gt;d__13&lt;&gt;))&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IEnumerable&lt;T&gt;</ReturnType>
@@ -706,12 +698,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text.Json.Nodes/JsonNode.xml b/xml/System.Text.Json.Nodes/JsonNode.xml
index fdbe22b3ff2..c1884420556 100644
--- a/xml/System.Text.Json.Nodes/JsonNode.xml
+++ b/xml/System.Text.Json.Nodes/JsonNode.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The base class that represents a single node within a mutable JSON document.</summary>
@@ -140,12 +136,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -322,14 +312,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
@@ -682,12 +664,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Boolean&gt;</ReturnType>
       </ReturnValue>
@@ -714,12 +690,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Byte&gt;</ReturnType>
       </ReturnValue>
@@ -746,12 +716,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Char&gt;</ReturnType>
       </ReturnValue>
@@ -778,12 +742,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.DateTime&gt;</ReturnType>
       </ReturnValue>
@@ -810,12 +768,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.DateTimeOffset&gt;</ReturnType>
       </ReturnValue>
@@ -842,12 +794,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Decimal&gt;</ReturnType>
       </ReturnValue>
@@ -874,12 +820,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Double&gt;</ReturnType>
       </ReturnValue>
@@ -906,12 +846,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Guid&gt;</ReturnType>
       </ReturnValue>
@@ -938,12 +872,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Int16&gt;</ReturnType>
       </ReturnValue>
@@ -970,12 +898,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Int32&gt;</ReturnType>
       </ReturnValue>
@@ -1002,12 +924,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Int64&gt;</ReturnType>
       </ReturnValue>
@@ -1039,10 +955,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.SByte&gt;</ReturnType>
@@ -1070,12 +982,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Single&gt;</ReturnType>
       </ReturnValue>
@@ -1107,10 +1013,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.UInt16&gt;</ReturnType>
@@ -1143,10 +1045,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.UInt32&gt;</ReturnType>
@@ -1179,10 +1077,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.UInt64&gt;</ReturnType>
@@ -1268,12 +1162,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1682,12 +1570,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
       </ReturnValue>
@@ -1714,12 +1596,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
       </ReturnValue>
@@ -1746,12 +1622,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
       </ReturnValue>
@@ -1778,12 +1648,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
       </ReturnValue>
@@ -1810,12 +1674,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
       </ReturnValue>
@@ -1842,12 +1700,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
       </ReturnValue>
@@ -1874,12 +1726,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
       </ReturnValue>
@@ -1906,12 +1752,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
       </ReturnValue>
@@ -1938,12 +1778,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
       </ReturnValue>
@@ -1970,12 +1804,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
       </ReturnValue>
@@ -2002,12 +1830,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
       </ReturnValue>
@@ -2039,10 +1861,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
@@ -2070,12 +1888,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
       </ReturnValue>
@@ -2107,10 +1919,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
@@ -2143,10 +1951,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
@@ -2179,10 +1983,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
@@ -2268,12 +2068,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
         <Attributes>
@@ -2429,10 +2223,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
@@ -2457,12 +2247,6 @@ The underlying value of a <xref:System.Text.Json.Nodes.JsonValue> after deserial
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
       </ReturnValue>
@@ -2535,12 +2319,6 @@ This method makes a copy of the data the reader acted on, so there is no caller
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text.Json.Nodes/JsonObject.xml b/xml/System.Text.Json.Nodes/JsonObject.xml
index dbbb84158ed..dd7f898ffa6 100644
--- a/xml/System.Text.Json.Nodes/JsonObject.xml
+++ b/xml/System.Text.Json.Nodes/JsonObject.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a mutable JSON object.</summary>
@@ -302,12 +298,6 @@ It's safe to perform multiple concurrent read operations on a <xref:System.Text.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonObject</ReturnType>
       </ReturnValue>
@@ -522,12 +512,6 @@ It's safe to perform multiple concurrent read operations on a <xref:System.Text.
         <AssemblyName>System.Text.Json</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text.Json.Nodes/JsonValue.xml b/xml/System.Text.Json.Nodes/JsonValue.xml
index c7bf4f7f7fe..0e5a9a9ff92 100644
--- a/xml/System.Text.Json.Nodes/JsonValue.xml
+++ b/xml/System.Text.Json.Nodes/JsonValue.xml
@@ -21,10 +21,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a mutable JSON value.</summary>
@@ -43,12 +39,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonValue</ReturnType>
       </ReturnValue>
@@ -76,12 +66,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonValue</ReturnType>
       </ReturnValue>
@@ -109,12 +93,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonValue</ReturnType>
       </ReturnValue>
@@ -142,12 +120,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonValue</ReturnType>
       </ReturnValue>
@@ -175,12 +147,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonValue</ReturnType>
       </ReturnValue>
@@ -208,12 +174,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonValue</ReturnType>
       </ReturnValue>
@@ -241,12 +201,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonValue</ReturnType>
       </ReturnValue>
@@ -274,12 +228,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonValue</ReturnType>
       </ReturnValue>
@@ -307,12 +255,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonValue</ReturnType>
       </ReturnValue>
@@ -340,12 +282,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonValue</ReturnType>
       </ReturnValue>
@@ -373,12 +309,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonValue</ReturnType>
       </ReturnValue>
@@ -894,10 +824,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonValue</ReturnType>
@@ -926,12 +852,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonValue</ReturnType>
       </ReturnValue>
@@ -1024,10 +944,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonValue</ReturnType>
@@ -1061,10 +977,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonValue</ReturnType>
@@ -1098,10 +1010,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonValue</ReturnType>
diff --git a/xml/System.Text.Json.Schema/JsonSchemaExporter.xml b/xml/System.Text.Json.Schema/JsonSchemaExporter.xml
index 62c15470642..1d00d218b81 100644
--- a/xml/System.Text.Json.Schema/JsonSchemaExporter.xml
+++ b/xml/System.Text.Json.Schema/JsonSchemaExporter.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Functionality for exporting JSON schema from serialization contracts defined in <see cref="T:System.Text.Json.Serialization.Metadata.JsonTypeInfo" />.</summary>
diff --git a/xml/System.Text.Json.Schema/JsonSchemaExporterContext.xml b/xml/System.Text.Json.Schema/JsonSchemaExporterContext.xml
index 153e9dd8e7e..21e383f8eee 100644
--- a/xml/System.Text.Json.Schema/JsonSchemaExporterContext.xml
+++ b/xml/System.Text.Json.Schema/JsonSchemaExporterContext.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the context for the generated JSON schema for a particular node in a type graph.</summary>
@@ -118,10 +114,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Serialization.Metadata.JsonTypeInfo</ReturnType>
diff --git a/xml/System.Text.Json.Schema/JsonSchemaExporterOptions.xml b/xml/System.Text.Json.Schema/JsonSchemaExporterOptions.xml
index 42b32be21c5..6cbfc1a9b11 100644
--- a/xml/System.Text.Json.Schema/JsonSchemaExporterOptions.xml
+++ b/xml/System.Text.Json.Schema/JsonSchemaExporterOptions.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Configures the behavior of the <see cref="T:System.Text.Json.Schema.JsonSchemaExporter" /> APIs.</summary>
diff --git a/xml/System.Text.Json.Serialization.Metadata/DefaultJsonTypeInfoResolver.xml b/xml/System.Text.Json.Serialization.Metadata/DefaultJsonTypeInfoResolver.xml
index f35a9dd6460..9afd6bf7386 100644
--- a/xml/System.Text.Json.Serialization.Metadata/DefaultJsonTypeInfoResolver.xml
+++ b/xml/System.Text.Json.Serialization.Metadata/DefaultJsonTypeInfoResolver.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the default, reflection-based JSON contract resolver used by System.Text.Json.</summary>
diff --git a/xml/System.Text.Json.Serialization.Metadata/IJsonTypeInfoResolver.xml b/xml/System.Text.Json.Serialization.Metadata/IJsonTypeInfoResolver.xml
index af5e70c062d..6a670d73274 100644
--- a/xml/System.Text.Json.Serialization.Metadata/IJsonTypeInfoResolver.xml
+++ b/xml/System.Text.Json.Serialization.Metadata/IJsonTypeInfoResolver.xml
@@ -12,12 +12,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Used to resolve the JSON serialization contract for requested types.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Text.Json.Serialization.Metadata/JsonCollectionInfoValues`1.xml b/xml/System.Text.Json.Serialization.Metadata/JsonCollectionInfoValues`1.xml
index 420cf05167c..08eee5e6304 100644
--- a/xml/System.Text.Json.Serialization.Metadata/JsonCollectionInfoValues`1.xml
+++ b/xml/System.Text.Json.Serialization.Metadata/JsonCollectionInfoValues`1.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TCollection">The collection type.</typeparam>
@@ -75,14 +71,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Serialization.Metadata.JsonTypeInfo</ReturnType>
diff --git a/xml/System.Text.Json.Serialization.Metadata/JsonDerivedType.xml b/xml/System.Text.Json.Serialization.Metadata/JsonDerivedType.xml
index 43023ef1aed..cbe22c1f0e4 100644
--- a/xml/System.Text.Json.Serialization.Metadata/JsonDerivedType.xml
+++ b/xml/System.Text.Json.Serialization.Metadata/JsonDerivedType.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a supported derived type defined in the metadata of a polymorphic type.</summary>
@@ -144,10 +140,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Text.Json.Serialization.Metadata/JsonMetadataServices.xml b/xml/System.Text.Json.Serialization.Metadata/JsonMetadataServices.xml
index a25e28e6637..0ccc38f4b20 100644
--- a/xml/System.Text.Json.Serialization.Metadata/JsonMetadataServices.xml
+++ b/xml/System.Text.Json.Serialization.Metadata/JsonMetadataServices.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides helpers to create and initialize metadata for JSON-serializable types.</summary>
@@ -1822,12 +1818,6 @@ This API is for use by the output of the System.Text.Json source generator and s
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Serialization.JsonConverter&lt;System.Nullable&lt;T&gt;&gt;</ReturnType>
       </ReturnValue>
@@ -1879,12 +1869,6 @@ This API is for use by the output of the System.Text.Json source generator and s
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Serialization.JsonConverter&lt;System.Nullable&lt;T&gt;&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text.Json.Serialization.Metadata/JsonParameterInfo.xml b/xml/System.Text.Json.Serialization.Metadata/JsonParameterInfo.xml
index e93547b59c8..e2f51d4d7f5 100644
--- a/xml/System.Text.Json.Serialization.Metadata/JsonParameterInfo.xml
+++ b/xml/System.Text.Json.Serialization.Metadata/JsonParameterInfo.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides JSON serialization-related metadata about a constructor parameter.</summary>
@@ -45,10 +41,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.ICustomAttributeProvider</ReturnType>
@@ -100,10 +92,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Text.Json.Serialization.Metadata/JsonParameterInfoValues.xml b/xml/System.Text.Json.Serialization.Metadata/JsonParameterInfoValues.xml
index 3ae2363393d..8ae1470a076 100644
--- a/xml/System.Text.Json.Serialization.Metadata/JsonParameterInfoValues.xml
+++ b/xml/System.Text.Json.Serialization.Metadata/JsonParameterInfoValues.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about a constructor parameter required for JSON deserialization.</summary>
@@ -71,14 +67,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Text.Json.Serialization.Metadata/JsonPolymorphismOptions.xml b/xml/System.Text.Json.Serialization.Metadata/JsonPolymorphismOptions.xml
index 3654fe55bb7..e9accedb759 100644
--- a/xml/System.Text.Json.Serialization.Metadata/JsonPolymorphismOptions.xml
+++ b/xml/System.Text.Json.Serialization.Metadata/JsonPolymorphismOptions.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines polymorphic configuration for a specified base type.</summary>
diff --git a/xml/System.Text.Json.Serialization.Metadata/JsonPropertyInfo.xml b/xml/System.Text.Json.Serialization.Metadata/JsonPropertyInfo.xml
index e6ae81debed..bc8e694da66 100644
--- a/xml/System.Text.Json.Serialization.Metadata/JsonPropertyInfo.xml
+++ b/xml/System.Text.Json.Serialization.Metadata/JsonPropertyInfo.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides JSON serialization-related metadata about a property or field.</summary>
@@ -52,10 +48,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Serialization.Metadata.JsonParameterInfo</ReturnType>
@@ -90,14 +82,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.ICustomAttributeProvider</ReturnType>
@@ -139,14 +123,6 @@ Setting a custom attribute provider has no impact on the contract model
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Serialization.JsonConverter</ReturnType>
diff --git a/xml/System.Text.Json.Serialization.Metadata/JsonPropertyInfoValues`1.xml b/xml/System.Text.Json.Serialization.Metadata/JsonPropertyInfoValues`1.xml
index 45f006a425f..93f4f9f2d6c 100644
--- a/xml/System.Text.Json.Serialization.Metadata/JsonPropertyInfoValues`1.xml
+++ b/xml/System.Text.Json.Serialization.Metadata/JsonPropertyInfoValues`1.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type to convert of the <see cref="T:System.Text.Json.Serialization.JsonConverter`1" /> for the property.</typeparam>
@@ -319,14 +315,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Text.Json.Serialization.Metadata/JsonTypeInfo.xml b/xml/System.Text.Json.Serialization.Metadata/JsonTypeInfo.xml
index 297687c6ee2..7d91d7171ec 100644
--- a/xml/System.Text.Json.Serialization.Metadata/JsonTypeInfo.xml
+++ b/xml/System.Text.Json.Serialization.Metadata/JsonTypeInfo.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides JSON serialization-related metadata about a type.</summary>
@@ -78,10 +74,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Serialization.JsonConverter</ReturnType>
@@ -124,10 +116,6 @@ The <xref:System.Text.Json.Serialization.JsonConverter> associated with the type
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Serialization.Metadata.JsonPropertyInfo</ReturnType>
@@ -171,10 +159,6 @@ The <xref:System.Text.Json.Serialization.JsonConverter> associated with the type
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Serialization.Metadata.JsonTypeInfo</ReturnType>
@@ -232,10 +216,6 @@ Which converter gets resolved influences the value of <xref:System.Text.Json.Ser
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Serialization.Metadata.JsonTypeInfo&lt;T&gt;</ReturnType>
@@ -672,10 +652,6 @@ Serialization callbacks are only supported for <see cref="F:System.Text.Json.Ser
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.JsonSerializerOptions</ReturnType>
@@ -799,10 +775,6 @@ Unmapped member handling is only supported for <see cref="F:System.Text.Json.Ser
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IList&lt;System.Text.Json.Serialization.Metadata.JsonPropertyInfo&gt;</ReturnType>
@@ -847,10 +819,6 @@ It's required that added <xref:System.Text.Json.Serialization.Metadata.JsonPrope
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
diff --git a/xml/System.Text.Json.Serialization.Metadata/JsonTypeInfoResolver.xml b/xml/System.Text.Json.Serialization.Metadata/JsonTypeInfoResolver.xml
index 8c24c54fade..34741fdcca5 100644
--- a/xml/System.Text.Json.Serialization.Metadata/JsonTypeInfoResolver.xml
+++ b/xml/System.Text.Json.Serialization.Metadata/JsonTypeInfoResolver.xml
@@ -20,10 +20,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains utilities and combinators acting on <see cref="T:System.Text.Json.Serialization.Metadata.IJsonTypeInfoResolver" />.</summary>
diff --git a/xml/System.Text.Json.Serialization/BinaryDataJsonConverter.xml b/xml/System.Text.Json.Serialization/BinaryDataJsonConverter.xml
index 745417d01b1..57fbf975d9c 100644
--- a/xml/System.Text.Json.Serialization/BinaryDataJsonConverter.xml
+++ b/xml/System.Text.Json.Serialization/BinaryDataJsonConverter.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Serializes <see cref="T:System.BinaryData" /> instances as Base64 JSON strings.</summary>
diff --git a/xml/System.Text.Json.Serialization/JsonConverter.xml b/xml/System.Text.Json.Serialization/JsonConverter.xml
index bbb98cf8357..b23206b315d 100644
--- a/xml/System.Text.Json.Serialization/JsonConverter.xml
+++ b/xml/System.Text.Json.Serialization/JsonConverter.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Converts an object or value to or from JSON.</summary>
@@ -58,12 +54,6 @@ For more information, see [How to write custom converters for JSON serialization
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text.Json.Serialization/JsonConverterAttribute.xml b/xml/System.Text.Json.Serialization/JsonConverterAttribute.xml
index c24e61c210e..8bb66748d4a 100644
--- a/xml/System.Text.Json.Serialization/JsonConverterAttribute.xml
+++ b/xml/System.Text.Json.Serialization/JsonConverterAttribute.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-3.0;netcore-3.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Enum | System.AttributeTargets.Property | System.AttributeTargets.Struct, AllowMultiple=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Enum | System.AttributeTargets.Property | System.AttributeTargets.Struct, AllowMultiple=false)&gt;]</AttributeName>
@@ -139,10 +135,6 @@ For more information, see [How to write custom converters for JSON serialization
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
diff --git a/xml/System.Text.Json.Serialization/JsonConverterFactory.xml b/xml/System.Text.Json.Serialization/JsonConverterFactory.xml
index 2f274fa1f90..f81264366ea 100644
--- a/xml/System.Text.Json.Serialization/JsonConverterFactory.xml
+++ b/xml/System.Text.Json.Serialization/JsonConverterFactory.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Supports converting several types by using a factory pattern.</summary>
@@ -82,12 +78,6 @@ For more information, see [How to write custom converters for JSON serialization
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Serialization.JsonConverter</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text.Json.Serialization/JsonConverter`1.xml b/xml/System.Text.Json.Serialization/JsonConverter`1.xml
index e9b5935f100..0c18db66e1e 100644
--- a/xml/System.Text.Json.Serialization/JsonConverter`1.xml
+++ b/xml/System.Text.Json.Serialization/JsonConverter`1.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of object or value handled by the converter.</typeparam>
diff --git a/xml/System.Text.Json.Serialization/JsonDerivedTypeAttribute.xml b/xml/System.Text.Json.Serialization/JsonDerivedTypeAttribute.xml
index 07aab3854bf..7753d8dc1e6 100644
--- a/xml/System.Text.Json.Serialization/JsonDerivedTypeAttribute.xml
+++ b/xml/System.Text.Json.Serialization/JsonDerivedTypeAttribute.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>When placed on a type declaration, indicates that the specified subtype should be opted into polymorphic serialization.</summary>
@@ -144,10 +140,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Text.Json.Serialization/JsonNumberEnumConverter`1.xml b/xml/System.Text.Json.Serialization/JsonNumberEnumConverter`1.xml
index 5f43a9893b3..7ff03f21a2f 100644
--- a/xml/System.Text.Json.Serialization/JsonNumberEnumConverter`1.xml
+++ b/xml/System.Text.Json.Serialization/JsonNumberEnumConverter`1.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TEnum">The enum type that this converter targets.</typeparam>
diff --git a/xml/System.Text.Json.Serialization/JsonPolymorphicAttribute.xml b/xml/System.Text.Json.Serialization/JsonPolymorphicAttribute.xml
index 127d11293b2..416ebdde7e2 100644
--- a/xml/System.Text.Json.Serialization/JsonPolymorphicAttribute.xml
+++ b/xml/System.Text.Json.Serialization/JsonPolymorphicAttribute.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>When placed on a type, indicates that the type should be serialized polymorphically.</summary>
diff --git a/xml/System.Text.Json.Serialization/JsonPropertyNameAttribute.xml b/xml/System.Text.Json.Serialization/JsonPropertyNameAttribute.xml
index 0c9cbe6a7bd..663dd237290 100644
--- a/xml/System.Text.Json.Serialization/JsonPropertyNameAttribute.xml
+++ b/xml/System.Text.Json.Serialization/JsonPropertyNameAttribute.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-3.0;netcore-3.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Property, AllowMultiple=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Property, AllowMultiple=false)&gt;]</AttributeName>
diff --git a/xml/System.Text.Json.Serialization/JsonSerializableAttribute.xml b/xml/System.Text.Json.Serialization/JsonSerializableAttribute.xml
index d7a8472b0e9..caa4134eafe 100644
--- a/xml/System.Text.Json.Serialization/JsonSerializableAttribute.xml
+++ b/xml/System.Text.Json.Serialization/JsonSerializableAttribute.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Instructs the System.Text.Json source generator to generate source code to help optimize performance when serializing and deserializing instances of the specified type and types in its object graph.</summary>
@@ -48,12 +44,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="type" Type="System.Type" />
       </Parameters>
diff --git a/xml/System.Text.Json.Serialization/JsonSerializerContext.xml b/xml/System.Text.Json.Serialization/JsonSerializerContext.xml
index 620e6d0c9af..61268f756b3 100644
--- a/xml/System.Text.Json.Serialization/JsonSerializerContext.xml
+++ b/xml/System.Text.Json.Serialization/JsonSerializerContext.xml
@@ -38,12 +38,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="options" Type="System.Text.Json.JsonSerializerOptions" />
       </Parameters>
@@ -79,10 +73,6 @@ If no instance options are passed, then no options are set until the context is
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.JsonSerializerOptions</ReturnType>
@@ -106,12 +96,6 @@ If no instance options are passed, then no options are set until the context is
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Serialization.Metadata.JsonTypeInfo</ReturnType>
       </ReturnValue>
@@ -143,10 +127,6 @@ If no instance options are passed, then no options are set until the context is
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.JsonSerializerOptions</ReturnType>
diff --git a/xml/System.Text.Json.Serialization/JsonSourceGenerationOptionsAttribute.xml b/xml/System.Text.Json.Serialization/JsonSourceGenerationOptionsAttribute.xml
index 2fff136213c..991e48a32de 100644
--- a/xml/System.Text.Json.Serialization/JsonSourceGenerationOptionsAttribute.xml
+++ b/xml/System.Text.Json.Serialization/JsonSourceGenerationOptionsAttribute.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Instructs the System.Text.Json source generator to assume the specified options will be used at run time via <see cref="T:System.Text.Json.JsonSerializerOptions" />.</summary>
diff --git a/xml/System.Text.Json.Serialization/JsonStringEnumConverter.xml b/xml/System.Text.Json.Serialization/JsonStringEnumConverter.xml
index 804126c7919..1c3f0c47dd7 100644
--- a/xml/System.Text.Json.Serialization/JsonStringEnumConverter.xml
+++ b/xml/System.Text.Json.Serialization/JsonStringEnumConverter.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Converts enumeration values to and from strings.</summary>
@@ -89,12 +85,6 @@ For more information, see [How to customize property names and values with Syste
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="namingPolicy" Type="System.Text.Json.JsonNamingPolicy" />
         <Parameter Name="allowIntegerValues" Type="System.Boolean" />
diff --git a/xml/System.Text.Json.Serialization/JsonStringEnumConverter`1.xml b/xml/System.Text.Json.Serialization/JsonStringEnumConverter`1.xml
index 059140c6cc9..dd6835926f4 100644
--- a/xml/System.Text.Json.Serialization/JsonStringEnumConverter`1.xml
+++ b/xml/System.Text.Json.Serialization/JsonStringEnumConverter`1.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TEnum">The enum type that this converter targets.</typeparam>
@@ -76,12 +72,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="namingPolicy" Type="System.Text.Json.JsonNamingPolicy" />
         <Parameter Name="allowIntegerValues" Type="System.Boolean" />
diff --git a/xml/System.Text.Json.Serialization/JsonStringEnumMemberNameAttribute.xml b/xml/System.Text.Json.Serialization/JsonStringEnumMemberNameAttribute.xml
index efdcb29e89c..bc751578141 100644
--- a/xml/System.Text.Json.Serialization/JsonStringEnumMemberNameAttribute.xml
+++ b/xml/System.Text.Json.Serialization/JsonStringEnumMemberNameAttribute.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>To be added.</summary>
diff --git a/xml/System.Text.Json.Serialization/ReferenceHandler.xml b/xml/System.Text.Json.Serialization/ReferenceHandler.xml
index 0c42a07c0ba..173c491372d 100644
--- a/xml/System.Text.Json.Serialization/ReferenceHandler.xml
+++ b/xml/System.Text.Json.Serialization/ReferenceHandler.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines how the <see cref="T:System.Text.Json.JsonSerializer" /> deals with references on serialization and deserialization.</summary>
diff --git a/xml/System.Text.Json.Serialization/ReferenceHandler`1.xml b/xml/System.Text.Json.Serialization/ReferenceHandler`1.xml
index 6a662ab7a77..5f5aaf6dd78 100644
--- a/xml/System.Text.Json.Serialization/ReferenceHandler`1.xml
+++ b/xml/System.Text.Json.Serialization/ReferenceHandler`1.xml
@@ -64,12 +64,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Serialization.ReferenceResolver</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text.Json.Serialization/ReferenceResolver.xml b/xml/System.Text.Json.Serialization/ReferenceResolver.xml
index 892ffb882ce..5288f464e28 100644
--- a/xml/System.Text.Json.Serialization/ReferenceResolver.xml
+++ b/xml/System.Text.Json.Serialization/ReferenceResolver.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines how the <see cref="T:System.Text.Json.JsonSerializer" /> deals with references on serialization and deserialization.
diff --git a/xml/System.Text.Json/JsonDocument.xml b/xml/System.Text.Json/JsonDocument.xml
index dfecda9507f..ba911a87d60 100644
--- a/xml/System.Text.Json/JsonDocument.xml
+++ b/xml/System.Text.Json/JsonDocument.xml
@@ -123,12 +123,6 @@ Because the input is considered to be text, a UTF-8 Byte-Order-Mark (BOM) must n
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.JsonDocument</ReturnType>
       </ReturnValue>
@@ -253,12 +247,6 @@ The <xref:System.ReadOnlyMemory%601> value may be used for the entire lifetime o
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.JsonDocument</ReturnType>
       </ReturnValue>
@@ -300,12 +288,6 @@ The <xref:System.ReadOnlyMemory%601> value may be used for the entire lifetime o
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Text.Json.JsonDocument&gt;</ReturnType>
       </ReturnValue>
@@ -344,12 +326,6 @@ The <xref:System.ReadOnlyMemory%601> value may be used for the entire lifetime o
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.JsonDocument</ReturnType>
       </ReturnValue>
@@ -425,12 +401,6 @@ The current <paramref name="reader" /> token does not start or represent a value
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -490,12 +460,6 @@ The current <paramref name="reader" /> token does not start or represent a value
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text.Json/JsonElement.xml b/xml/System.Text.Json/JsonElement.xml
index 7d7388c96a2..d794a07503a 100644
--- a/xml/System.Text.Json/JsonElement.xml
+++ b/xml/System.Text.Json/JsonElement.xml
@@ -290,12 +290,6 @@ This method does not parse the contents of a JSON string value.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -701,12 +695,6 @@ If a property is defined multiple times for the same object, the method matches
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.JsonElement</ReturnType>
       </ReturnValue>
@@ -773,12 +761,6 @@ If a property is defined multiple times for the same object, the method matches
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -883,12 +865,6 @@ On .NET Core, this method returns <xref:System.Single.PositiveInfinity?displayPr
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1128,12 +1104,6 @@ This method makes a copy of the data the reader acted on, so there is no caller
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1218,12 +1188,6 @@ This method does not parse the contents of a JSON string value.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1683,12 +1647,6 @@ If a property is defined multiple times for the same object, the method matches
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2092,12 +2050,6 @@ This method is functionally equal to doing an ordinal comparison of `text` and t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2163,12 +2115,6 @@ This method is functionally equal to doing an ordinal comparison of `text` and t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text.Json/JsonEncodedText.xml b/xml/System.Text.Json/JsonEncodedText.xml
index ec9e715a44c..43118ebff44 100644
--- a/xml/System.Text.Json/JsonEncodedText.xml
+++ b/xml/System.Text.Json/JsonEncodedText.xml
@@ -146,12 +146,6 @@ This type can be used to cache and store known strings used for writing JSON ahe
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.JsonEncodedText</ReturnType>
       </ReturnValue>
@@ -224,12 +218,6 @@ This type can be used to cache and store known strings used for writing JSON ahe
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -350,12 +338,6 @@ This method returns 0 on a default instance of <xref:System.Text.Json.JsonEncode
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -392,10 +374,6 @@ This method returns an empty string on a default instance of <xref:System.Text.J
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Text.Json/JsonException.xml b/xml/System.Text.Json/JsonException.xml
index 84839aefbb4..660cbb1db78 100644
--- a/xml/System.Text.Json/JsonException.xml
+++ b/xml/System.Text.Json/JsonException.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines a custom exception object that is thrown when invalid JSON text is encountered, the defined maximum depth is passed, or the JSON text is not compatible with the type of a property on an object.</summary>
@@ -119,10 +115,6 @@ For more information, see [How to write custom converters for JSON serialization
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
@@ -297,10 +289,6 @@ Note that the `bytePositionInLine` counts the number of bytes (that is, UTF-8 co
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -362,10 +350,6 @@ Note that the `bytePositionInLine` counts the number of bytes (that is, UTF-8 co
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Text.Json/JsonNamingPolicy.xml b/xml/System.Text.Json/JsonNamingPolicy.xml
index fb7674b2183..f74af408005 100644
--- a/xml/System.Text.Json/JsonNamingPolicy.xml
+++ b/xml/System.Text.Json/JsonNamingPolicy.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Determines the naming policy used to convert a string-based name to another format, such as a camel-casing format.</summary>
diff --git a/xml/System.Text.Json/JsonProperty.xml b/xml/System.Text.Json/JsonProperty.xml
index 06b9b256442..48419291168 100644
--- a/xml/System.Text.Json/JsonProperty.xml
+++ b/xml/System.Text.Json/JsonProperty.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a single property for a JSON object.</summary>
@@ -83,12 +79,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -128,12 +118,6 @@ This method is functionally equal to doing an ordinal comparison of `utf8Text` a
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -174,12 +158,6 @@ This method is functionally equal to doing an ordinal comparison of `text` and <
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text.Json/JsonSerializer.xml b/xml/System.Text.Json/JsonSerializer.xml
index 99f33555626..f9e073c264d 100644
--- a/xml/System.Text.Json/JsonSerializer.xml
+++ b/xml/System.Text.Json/JsonSerializer.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides functionality to serialize objects or value types to JSON and to deserialize JSON into objects or value types.</summary>
@@ -89,12 +85,6 @@ For more information, see [How to serialize and deserialize JSON](/dotnet/standa
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -132,12 +122,6 @@ For more information, see [How to serialize and deserialize JSON](/dotnet/standa
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -297,12 +281,6 @@ There is remaining data in the string beyond a single JSON value.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -483,10 +461,6 @@ There is remaining data in the string beyond a single JSON value.</exception>
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -606,10 +580,6 @@ There is remaining data in the span beyond a single JSON value.</exception>
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1008,10 +978,6 @@ There is remaining data in the string beyond a single JSON value.</exception>
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1110,10 +1076,6 @@ There is remaining data in the string beyond a single JSON value.</exception>
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1222,10 +1184,6 @@ There is remaining data in the string beyond a single JSON value.</exception>
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1354,10 +1312,6 @@ The <xref:System.Text.Json.JsonReaderOptions> used to create the instance of the
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TValue</ReturnType>
@@ -1460,10 +1414,6 @@ The <xref:System.Text.Json.JsonReaderOptions> used to create the instance of the
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TValue</ReturnType>
@@ -1522,12 +1472,6 @@ There is remaining data in the span beyond a single JSON value.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TValue</ReturnType>
       </ReturnValue>
@@ -1584,10 +1528,6 @@ There is remaining data in the span beyond a single JSON value.</exception>
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TValue</ReturnType>
@@ -1651,12 +1591,6 @@ There is remaining data in the span beyond a single JSON value.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TValue</ReturnType>
       </ReturnValue>
@@ -1745,10 +1679,6 @@ There is remaining data in the string beyond a single JSON value.</exception>
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TValue</ReturnType>
@@ -1894,10 +1824,6 @@ There is remaining data in the string beyond a single JSON value.</exception>
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TValue</ReturnType>
@@ -1999,10 +1925,6 @@ There is remaining data in the string beyond a single JSON value.</exception>
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TValue</ReturnType>
@@ -2039,12 +1961,6 @@ There is remaining data in the string beyond a single JSON value.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TValue</ReturnType>
       </ReturnValue>
@@ -2097,10 +2013,6 @@ There is remaining data in the string beyond a single JSON value.</exception>
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TValue</ReturnType>
@@ -2137,12 +2049,6 @@ There is remaining data in the string beyond a single JSON value.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TValue</ReturnType>
       </ReturnValue>
@@ -2200,10 +2106,6 @@ There is remaining data in the string beyond a single JSON value.</exception>
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>TValue</ReturnType>
@@ -2265,12 +2167,6 @@ A value could not be read from the reader.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TValue</ReturnType>
       </ReturnValue>
@@ -2495,10 +2391,6 @@ There is remaining data in the stream.</exception>
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;TValue&gt;</ReturnType>
@@ -2616,10 +2508,6 @@ There is remaining data in the stream.</exception>
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IAsyncEnumerable&lt;TValue&gt;</ReturnType>
@@ -2715,10 +2603,6 @@ There is remaining data in the stream.</exception>
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext, or make sure all of the required types are preserved.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("JSON serialization and deserialization might require types that cannot be statically analyzed. Use the overload that takes a JsonTypeInfo or JsonSerializerContext, or make sure all of the required types are preserved.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Generic.IAsyncEnumerable&lt;TValue&gt;</ReturnType>
@@ -4494,10 +4378,6 @@ For more information, see [How to serialize and deserialize JSON](/dotnet/standa
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.JsonElement</ReturnType>
@@ -4591,10 +4471,6 @@ For more information, see [How to serialize and deserialize JSON](/dotnet/standa
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.JsonElement</ReturnType>
@@ -4678,12 +4554,6 @@ For more information, see [How to serialize and deserialize JSON](/dotnet/standa
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
       </ReturnValue>
@@ -4731,10 +4601,6 @@ For more information, see [How to serialize and deserialize JSON](/dotnet/standa
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
@@ -4827,10 +4693,6 @@ For more information, see [How to serialize and deserialize JSON](/dotnet/standa
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation. Use System.Text.Json source generation for native AOT applications.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Nodes.JsonNode</ReturnType>
diff --git a/xml/System.Text.Json/JsonSerializerOptions.xml b/xml/System.Text.Json/JsonSerializerOptions.xml
index b4ea9feda15..3662e7efb93 100644
--- a/xml/System.Text.Json/JsonSerializerOptions.xml
+++ b/xml/System.Text.Json/JsonSerializerOptions.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides options to be used with <see cref="T:System.Text.Json.JsonSerializer" />.</summary>
@@ -137,10 +133,6 @@ For more information, see [How to serialize and deserialize JSON](/dotnet/standa
           <AttributeName Language="C#">[System.Obsolete("JsonSerializerOptions.AddContext is obsolete. To register a JsonSerializerContext, use either the TypeInfoResolver or TypeInfoResolverChain properties.", DiagnosticId="SYSLIB0049", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("JsonSerializerOptions.AddContext is obsolete. To register a JsonSerializerContext, use either the TypeInfoResolver or TypeInfoResolverChain properties.", DiagnosticId="SYSLIB0049", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -403,14 +395,6 @@ We recommend that you leave this value unchanged unless changing it makes an obs
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.JsonNamingPolicy</ReturnType>
@@ -453,14 +437,6 @@ For more information, see [Use a naming policy for dictionary keys](/dotnet/stan
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Encodings.Web.JavaScriptEncoder</ReturnType>
@@ -1019,14 +995,6 @@ For more information, see [How to enable case-insensitive property name matching
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.JsonNamingPolicy</ReturnType>
@@ -1105,14 +1073,6 @@ For more information, see [How to allow some kinds of invalid JSON with System.T
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Serialization.ReferenceHandler</ReturnType>
@@ -1290,14 +1250,6 @@ Use <xref:System.Text.Json.Serialization.ReferenceHandler.Preserve> to enable un
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Json.Serialization.Metadata.IJsonTypeInfoResolver</ReturnType>
diff --git a/xml/System.Text.Json/JsonWriterOptions.xml b/xml/System.Text.Json/JsonWriterOptions.xml
index afe4d64fa5e..bce95118f1d 100644
--- a/xml/System.Text.Json/JsonWriterOptions.xml
+++ b/xml/System.Text.Json/JsonWriterOptions.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Allows the user to define custom behavior when writing JSON using the <see cref="T:System.Text.Json.Utf8JsonWriter" />.</summary>
@@ -71,14 +67,6 @@ For more information, see [How to write custom serializers and deserializers wit
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Encodings.Web.JavaScriptEncoder</ReturnType>
diff --git a/xml/System.Text.Json/Utf8JsonReader.xml b/xml/System.Text.Json/Utf8JsonReader.xml
index b6f47bf274e..36603acbeff 100644
--- a/xml/System.Text.Json/Utf8JsonReader.xml
+++ b/xml/System.Text.Json/Utf8JsonReader.xml
@@ -489,12 +489,6 @@ The JSON token value represents a number less than <see cref="F:System.Byte.MinV
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -532,12 +526,6 @@ The value is incomplete. That is, the JSON string length is not a multiple of 4.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -915,12 +903,6 @@ The JSON token value represents a number less than <see cref="F:System.SByte.Min
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1365,12 +1347,6 @@ For comments, this value points to before the first comment delimiter (that is,
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2147,10 +2123,6 @@ The comparison of the JSON token value in the source and the lookup text is done
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
diff --git a/xml/System.Text.Json/Utf8JsonWriter.xml b/xml/System.Text.Json/Utf8JsonWriter.xml
index 1b934c1adc5..0f3aca3ad14 100644
--- a/xml/System.Text.Json/Utf8JsonWriter.xml
+++ b/xml/System.Text.Json/Utf8JsonWriter.xml
@@ -67,12 +67,6 @@ For more information, see [How to write custom serializers and deserializers wit
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="bufferWriter" Type="System.Buffers.IBufferWriter&lt;System.Byte&gt;" />
         <Parameter Name="options" Type="System.Text.Json.JsonWriterOptions" />
@@ -101,12 +95,6 @@ For more information, see [How to write custom serializers and deserializers wit
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="utf8Json" Type="System.IO.Stream" />
         <Parameter Name="options" Type="System.Text.Json.JsonWriterOptions" />
@@ -347,12 +335,6 @@ In the case of <xref:System.IO.Stream>, this writes the data to the stream and f
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -455,12 +437,6 @@ The <xref:System.Text.Json.Utf8JsonWriter> will continue to use the original wri
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -500,12 +476,6 @@ The <xref:System.Text.Json.Utf8JsonWriter> will continue to use the original wri
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -843,12 +813,6 @@ The property name is escaped before writing.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1040,12 +1004,6 @@ The comment value is not escaped before writing.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1216,12 +1174,6 @@ The property name is escaped before writing.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1936,12 +1888,6 @@ The property name is escaped before writing.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1985,12 +1931,6 @@ The property name is escaped before writing.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2034,12 +1974,6 @@ The property name is escaped before writing.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2083,12 +2017,6 @@ The property name is escaped before writing.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2132,12 +2060,6 @@ The property name is escaped before writing.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2186,10 +2108,6 @@ The property name is escaped before writing.
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -2239,10 +2157,6 @@ The property name is escaped before writing.
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -2933,12 +2847,6 @@ The property name is escaped before writing.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3145,12 +3053,6 @@ The <xref:System.Text.Json.JsonWriterOptions.Indented> and <xref:System.Text.Jso
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3322,12 +3224,6 @@ Validation is enabled, and this write operation would produce invalid JSON.</exc
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3526,12 +3422,6 @@ Validation is enabled, and this write operation would produce invalid JSON.</exc
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4212,12 +4102,6 @@ The property name is escaped before writing.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4262,12 +4146,6 @@ The property name is escaped before writing.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4312,12 +4190,6 @@ The property name is escaped before writing.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4456,12 +4328,6 @@ The property name and value are escaped before writing.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4512,12 +4378,6 @@ If `value` is `null`, the JSON **null** value is written, as if the <xref:System
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4773,12 +4633,6 @@ If `value` is `null`, the JSON **null** value is written, as if the <xref:System
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5051,12 +4905,6 @@ The value is escaped before writing.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text.RegularExpressions/Capture.xml b/xml/System.Text.RegularExpressions/Capture.xml
index ec1a3b03b09..9724914697c 100644
--- a/xml/System.Text.RegularExpressions/Capture.xml
+++ b/xml/System.Text.RegularExpressions/Capture.xml
@@ -221,10 +221,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -287,10 +283,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Text.RegularExpressions/CaptureCollection.xml b/xml/System.Text.RegularExpressions/CaptureCollection.xml
index e93a2245d4d..6415b3de742 100644
--- a/xml/System.Text.RegularExpressions/CaptureCollection.xml
+++ b/xml/System.Text.RegularExpressions/CaptureCollection.xml
@@ -90,10 +90,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Text.RegularExpressions/GeneratedRegexAttribute.xml b/xml/System.Text.RegularExpressions/GeneratedRegexAttribute.xml
index 346160e95a4..857dc34042b 100644
--- a/xml/System.Text.RegularExpressions/GeneratedRegexAttribute.xml
+++ b/xml/System.Text.RegularExpressions/GeneratedRegexAttribute.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="net-9.0">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Method | System.AttributeTargets.Property, AllowMultiple=false, Inherited=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Method | System.AttributeTargets.Property, AllowMultiple=false, Inherited=false)&gt;]</AttributeName>
diff --git a/xml/System.Text.RegularExpressions/Group.xml b/xml/System.Text.RegularExpressions/Group.xml
index b8a52785338..87299d9f5ee 100644
--- a/xml/System.Text.RegularExpressions/Group.xml
+++ b/xml/System.Text.RegularExpressions/Group.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Text.RegularExpressions/GroupCollection.xml b/xml/System.Text.RegularExpressions/GroupCollection.xml
index 7c0c74a39c2..ffb2d0c0bfc 100644
--- a/xml/System.Text.RegularExpressions/GroupCollection.xml
+++ b/xml/System.Text.RegularExpressions/GroupCollection.xml
@@ -110,10 +110,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Text.RegularExpressions/Match.xml b/xml/System.Text.RegularExpressions/Match.xml
index 7c5c3877fd4..7d894291668 100644
--- a/xml/System.Text.RegularExpressions/Match.xml
+++ b/xml/System.Text.RegularExpressions/Match.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Text.RegularExpressions/MatchCollection.xml b/xml/System.Text.RegularExpressions/MatchCollection.xml
index 23564093e09..b453eab45f5 100644
--- a/xml/System.Text.RegularExpressions/MatchCollection.xml
+++ b/xml/System.Text.RegularExpressions/MatchCollection.xml
@@ -90,10 +90,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Text.RegularExpressions/Regex+ValueMatchEnumerator.xml b/xml/System.Text.RegularExpressions/Regex+ValueMatchEnumerator.xml
index 462fd715632..10754e3c6cd 100644
--- a/xml/System.Text.RegularExpressions/Regex+ValueMatchEnumerator.xml
+++ b/xml/System.Text.RegularExpressions/Regex+ValueMatchEnumerator.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.IsByRefLike]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsByRefLike&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an enumerator containing the set of successful matches found by iteratively applying a regular expression pattern to the input span.</summary>
diff --git a/xml/System.Text.RegularExpressions/Regex+ValueSplitEnumerator.xml b/xml/System.Text.RegularExpressions/Regex+ValueSplitEnumerator.xml
index 2e7fd89956a..62fd2cee6e5 100644
--- a/xml/System.Text.RegularExpressions/Regex+ValueSplitEnumerator.xml
+++ b/xml/System.Text.RegularExpressions/Regex+ValueSplitEnumerator.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.IsByRefLike]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsByRefLike&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an enumerator containing the set of splits around successful matches found by iteratively applying a regular expression pattern to the input span.</summary>
diff --git a/xml/System.Text.RegularExpressions/Regex.xml b/xml/System.Text.RegularExpressions/Regex.xml
index c50e0047198..aee84aace9e 100644
--- a/xml/System.Text.RegularExpressions/Regex.xml
+++ b/xml/System.Text.RegularExpressions/Regex.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -641,14 +637,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netstandard-2.0">
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
@@ -760,14 +748,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netstandard-2.0">
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
@@ -1261,12 +1241,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
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@@ -1335,12 +1309,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1376,12 +1344,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1474,12 +1436,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
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@@ -1580,12 +1536,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
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@@ -1690,12 +1640,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.RegularExpressions.Regex+ValueMatchEnumerator</ReturnType>
       </ReturnValue>
@@ -1740,12 +1684,6 @@ Each match won't actually happen until <xref:System.Text.RegularExpressions.Rege
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.RegularExpressions.Regex+ValueMatchEnumerator</ReturnType>
       </ReturnValue>
@@ -1792,12 +1730,6 @@ Each match won't actually happen until <xref:System.Text.RegularExpressions.Rege
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.RegularExpressions.Regex+ValueMatchEnumerator</ReturnType>
       </ReturnValue>
@@ -1858,12 +1790,6 @@ Each match won't actually happen until <xref:System.Text.RegularExpressions.Rege
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.RegularExpressions.Regex+ValueMatchEnumerator</ReturnType>
       </ReturnValue>
@@ -1928,12 +1854,6 @@ Each match won't actually happen until <xref:System.Text.RegularExpressions.Rege
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.RegularExpressions.Regex+ValueMatchEnumerator</ReturnType>
       </ReturnValue>
@@ -1998,12 +1918,6 @@ Each match won't actually happen until <xref:System.Text.RegularExpressions.Rege
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.RegularExpressions.Regex+ValueSplitEnumerator</ReturnType>
       </ReturnValue>
@@ -2043,12 +1957,6 @@ Each match won't actually happen until <xref:System.Text.RegularExpressions.Rege
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.RegularExpressions.Regex+ValueSplitEnumerator</ReturnType>
       </ReturnValue>
@@ -2090,12 +1998,6 @@ Each match won't actually happen until <xref:System.Text.RegularExpressions.Rege
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.RegularExpressions.Regex+ValueSplitEnumerator</ReturnType>
       </ReturnValue>
@@ -2151,12 +2053,6 @@ Each match won't actually happen until <xref:System.Text.RegularExpressions.Rege
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.RegularExpressions.Regex+ValueSplitEnumerator</ReturnType>
       </ReturnValue>
@@ -2200,12 +2096,6 @@ Each match won't actually happen until <xref:System.Text.RegularExpressions.Rege
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.RegularExpressions.Regex+ValueSplitEnumerator</ReturnType>
       </ReturnValue>
@@ -2265,12 +2155,6 @@ Each match won't actually happen until <xref:System.Text.RegularExpressions.Rege
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.RegularExpressions.Regex+ValueSplitEnumerator</ReturnType>
       </ReturnValue>
@@ -2975,12 +2859,6 @@ Allows an <see cref="T:System.Object" /> to attempt to free resources and perfor
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
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@@ -3106,12 +2984,6 @@ Allows an <see cref="T:System.Object" /> to attempt to free resources and perfor
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3149,12 +3021,6 @@ Allows an <see cref="T:System.Object" /> to attempt to free resources and perfor
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
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@@ -3406,12 +3272,6 @@ For more details about `startat`, see the Remarks section of <xref:System.Text.R
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
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       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
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@@ -3586,12 +3446,6 @@ For more details about `startat`, see the Remarks section of <xref:System.Text.R
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
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diff --git a/xml/System.Text.RegularExpressions/RegexCompilationInfo.xml b/xml/System.Text.RegularExpressions/RegexCompilationInfo.xml
index 7fe50bb30d2..018f32e2bf6 100644
--- a/xml/System.Text.RegularExpressions/RegexCompilationInfo.xml
+++ b/xml/System.Text.RegularExpressions/RegexCompilationInfo.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Text.RegularExpressions/RegexMatchTimeoutException.xml b/xml/System.Text.RegularExpressions/RegexMatchTimeoutException.xml
index 4a146ef085b..f1902eb9f77 100644
--- a/xml/System.Text.RegularExpressions/RegexMatchTimeoutException.xml
+++ b/xml/System.Text.RegularExpressions/RegexMatchTimeoutException.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Text.RegularExpressions/RegexParseException.xml b/xml/System.Text.RegularExpressions/RegexParseException.xml
index 3c861c53d15..1acf4eeb3cb 100644
--- a/xml/System.Text.RegularExpressions/RegexParseException.xml
+++ b/xml/System.Text.RegularExpressions/RegexParseException.xml
@@ -72,10 +72,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Text.RegularExpressions/RegexRunner.xml b/xml/System.Text.RegularExpressions/RegexRunner.xml
index fb358e23778..4751d4cd49e 100644
--- a/xml/System.Text.RegularExpressions/RegexRunner.xml
+++ b/xml/System.Text.RegularExpressions/RegexRunner.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Text.RegularExpressions.RegexRunner" /> class is the base class for compiled regular expressions.</summary>
@@ -192,12 +188,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -253,10 +243,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete mechanisms for Regex extensibility. It is not supported.", DiagnosticId="SYSLIB0052", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete mechanisms for Regex extensibility. It is not supported.", DiagnosticId="SYSLIB0052", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -1630,12 +1616,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
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-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
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-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1689,10 +1669,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete mechanisms for Regex extensibility. It is not supported.", DiagnosticId="SYSLIB0052", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete mechanisms for Regex extensibility. It is not supported.", DiagnosticId="SYSLIB0052", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.RegularExpressions.Match</ReturnType>
@@ -1758,10 +1734,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete mechanisms for Regex extensibility. It is not supported.", DiagnosticId="SYSLIB0052", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete mechanisms for Regex extensibility. It is not supported.", DiagnosticId="SYSLIB0052", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.RegularExpressions.Match</ReturnType>
diff --git a/xml/System.Text.RegularExpressions/RegexRunnerFactory.xml b/xml/System.Text.RegularExpressions/RegexRunnerFactory.xml
index 07a03a033ef..c7606ebd97f 100644
--- a/xml/System.Text.RegularExpressions/RegexRunnerFactory.xml
+++ b/xml/System.Text.RegularExpressions/RegexRunnerFactory.xml
@@ -138,12 +138,6 @@
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         <AssemblyVersion>2.1.0.0</AssemblyVersion>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.RegularExpressions.RegexRunner</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text.Unicode/UnicodeRange.xml b/xml/System.Text.Unicode/UnicodeRange.xml
index cc7105c508f..976fe7ae709 100644
--- a/xml/System.Text.Unicode/UnicodeRange.xml
+++ b/xml/System.Text.Unicode/UnicodeRange.xml
@@ -101,12 +101,6 @@ Any undefined code points between `firstCodePoint` and `firstCodePoint` + `lengt
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Unicode.UnicodeRange</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text.Unicode/UnicodeRanges.xml b/xml/System.Text.Unicode/UnicodeRanges.xml
index f5c0318707c..cd42239aa6e 100644
--- a/xml/System.Text.Unicode/UnicodeRanges.xml
+++ b/xml/System.Text.Unicode/UnicodeRanges.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
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-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides static properties that return predefined <see cref="T:System.Text.Unicode.UnicodeRange" /> instances that correspond to blocks from the Unicode specification.</summary>
diff --git a/xml/System.Text.Unicode/Utf8+TryWriteInterpolatedStringHandler.xml b/xml/System.Text.Unicode/Utf8+TryWriteInterpolatedStringHandler.xml
index cc07b874d62..80cd04b527b 100644
--- a/xml/System.Text.Unicode/Utf8+TryWriteInterpolatedStringHandler.xml
+++ b/xml/System.Text.Unicode/Utf8+TryWriteInterpolatedStringHandler.xml
@@ -181,12 +181,6 @@
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-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
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@@ -212,12 +206,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
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-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
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@@ -333,12 +321,6 @@
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-      <Attributes>
-        <Attribute>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
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@@ -369,12 +351,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -412,12 +388,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
-        <Attribute>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
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@@ -457,12 +427,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
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@@ -502,12 +466,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
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-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
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@@ -549,12 +507,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
-        <Attribute>
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text/ASCIIEncoding.xml b/xml/System.Text/ASCIIEncoding.xml
index 3a253ce8b60..01bc7411b3a 100644
--- a/xml/System.Text/ASCIIEncoding.xml
+++ b/xml/System.Text/ASCIIEncoding.xml
@@ -237,10 +237,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -403,10 +399,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -657,10 +649,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -769,10 +757,6 @@
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1018,10 +1002,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
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       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1273,10 +1253,6 @@
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1385,10 +1361,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
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       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -1449,10 +1421,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -1701,10 +1669,6 @@
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         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Text/CodePagesEncodingProvider.xml b/xml/System.Text/CodePagesEncodingProvider.xml
index 3139a389e62..a3f413de4b3 100644
--- a/xml/System.Text/CodePagesEncodingProvider.xml
+++ b/xml/System.Text/CodePagesEncodingProvider.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
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-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides access to an encoding provider for code pages that otherwise are available only in the desktop .NET Framework.</summary>
@@ -144,12 +140,6 @@ The .NET Framework supports a large number of character encodings and code pages
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Encoding</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text/CompositeFormat.xml b/xml/System.Text/CompositeFormat.xml
index 58ce1978f4e..f7d418253ae 100644
--- a/xml/System.Text/CompositeFormat.xml
+++ b/xml/System.Text/CompositeFormat.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a parsed composite format string.</summary>
diff --git a/xml/System.Text/Decoder.xml b/xml/System.Text/Decoder.xml
index 076e0be64e1..43f099d1ee7 100644
--- a/xml/System.Text/Decoder.xml
+++ b/xml/System.Text/Decoder.xml
@@ -383,10 +383,6 @@ The `completed` parameter can also be set to `false`, even though the `bytesUsed
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -498,14 +494,6 @@ The following example uses the <xref:System.Text.Encoder.Convert%2A> method to c
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -571,10 +559,6 @@ The following example uses the <xref:System.Text.Encoder.Convert%2A> method to c
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -784,12 +768,6 @@ The following example uses the <xref:System.Text.Encoder.Convert%2A> method to c
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -878,10 +856,6 @@ The following example uses the <xref:System.Text.Encoder.Convert%2A> method to c
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -1136,12 +1110,6 @@ The following example uses the <xref:System.Text.Encoder.Convert%2A> method to c
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1245,12 +1213,6 @@ The following example uses the <xref:System.Text.Encoder.Convert%2A> method to c
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text/DecoderExceptionFallback.xml b/xml/System.Text/DecoderExceptionFallback.xml
index 2323f454592..20f130e5827 100644
--- a/xml/System.Text/DecoderExceptionFallback.xml
+++ b/xml/System.Text/DecoderExceptionFallback.xml
@@ -158,12 +158,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.DecoderFallbackBuffer</ReturnType>
       </ReturnValue>
@@ -216,12 +210,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text/DecoderExceptionFallbackBuffer.xml b/xml/System.Text/DecoderExceptionFallbackBuffer.xml
index 52351555fbc..637856239ab 100644
--- a/xml/System.Text/DecoderExceptionFallbackBuffer.xml
+++ b/xml/System.Text/DecoderExceptionFallbackBuffer.xml
@@ -117,12 +117,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text/DecoderFallback.xml b/xml/System.Text/DecoderFallback.xml
index 247c8147648..4b437b426bc 100644
--- a/xml/System.Text/DecoderFallback.xml
+++ b/xml/System.Text/DecoderFallback.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Text/DecoderFallbackBuffer.xml b/xml/System.Text/DecoderFallbackBuffer.xml
index d00aead672a..bf2f27edcc0 100644
--- a/xml/System.Text/DecoderFallbackBuffer.xml
+++ b/xml/System.Text/DecoderFallbackBuffer.xml
@@ -161,12 +161,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text/DecoderFallbackException.xml b/xml/System.Text/DecoderFallbackException.xml
index 055c2223340..9a46d17fe9e 100644
--- a/xml/System.Text/DecoderFallbackException.xml
+++ b/xml/System.Text/DecoderFallbackException.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Text/DecoderReplacementFallback.xml b/xml/System.Text/DecoderReplacementFallback.xml
index 647816fecf6..11744a1923d 100644
--- a/xml/System.Text/DecoderReplacementFallback.xml
+++ b/xml/System.Text/DecoderReplacementFallback.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -332,12 +328,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text/DecoderReplacementFallbackBuffer.xml b/xml/System.Text/DecoderReplacementFallbackBuffer.xml
index c1f928c30d6..342c4391a36 100644
--- a/xml/System.Text/DecoderReplacementFallbackBuffer.xml
+++ b/xml/System.Text/DecoderReplacementFallbackBuffer.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a substitute output string that is emitted when the original input byte sequence cannot be decoded. This class cannot be inherited.</summary>
diff --git a/xml/System.Text/Encoder.xml b/xml/System.Text/Encoder.xml
index da69b3d41e5..42c5521cdfb 100644
--- a/xml/System.Text/Encoder.xml
+++ b/xml/System.Text/Encoder.xml
@@ -359,10 +359,6 @@ The following example demonstrates how to convert an array of Unicode characters
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -478,14 +474,6 @@ The following example demonstrates how to convert an array of Unicode characters
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -555,10 +543,6 @@ The following example demonstrates how to convert an array of Unicode characters
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -759,12 +743,6 @@ The following example demonstrates how to convert an array of Unicode characters
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1004,12 +982,6 @@ If your application is to convert many segments of an input stream, consider usi
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text/EncoderExceptionFallback.xml b/xml/System.Text/EncoderExceptionFallback.xml
index ce5a3a5679c..68b56775508 100644
--- a/xml/System.Text/EncoderExceptionFallback.xml
+++ b/xml/System.Text/EncoderExceptionFallback.xml
@@ -158,12 +158,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.EncoderFallbackBuffer</ReturnType>
       </ReturnValue>
@@ -216,12 +210,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text/EncoderFallback.xml b/xml/System.Text/EncoderFallback.xml
index 6bc4efcdc8d..d8f200e7974 100644
--- a/xml/System.Text/EncoderFallback.xml
+++ b/xml/System.Text/EncoderFallback.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Text/EncoderFallbackException.xml b/xml/System.Text/EncoderFallbackException.xml
index aaf3838da60..7f69ccc0cad 100644
--- a/xml/System.Text/EncoderFallbackException.xml
+++ b/xml/System.Text/EncoderFallbackException.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Text/EncoderReplacementFallback.xml b/xml/System.Text/EncoderReplacementFallback.xml
index af47a68628a..bd7d386cc98 100644
--- a/xml/System.Text/EncoderReplacementFallback.xml
+++ b/xml/System.Text/EncoderReplacementFallback.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -338,10 +334,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Text/EncoderReplacementFallbackBuffer.xml b/xml/System.Text/EncoderReplacementFallbackBuffer.xml
index 72b1fde9e10..26983655463 100644
--- a/xml/System.Text/EncoderReplacementFallbackBuffer.xml
+++ b/xml/System.Text/EncoderReplacementFallbackBuffer.xml
@@ -83,12 +83,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="fallback" Type="System.Text.EncoderReplacementFallback" />
       </Parameters>
diff --git a/xml/System.Text/Encoding.xml b/xml/System.Text/Encoding.xml
index cf4b2b76857..6db012a6146 100644
--- a/xml/System.Text/Encoding.xml
+++ b/xml/System.Text/Encoding.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -261,12 +257,6 @@ The following example converts a string from one encoding to another.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="codePage" Type="System.Int32" Index="0" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.3;netstandard-1.4;netstandard-1.6;netstandard-2.0;netstandard-2.1" />
         <Parameter Name="encoderFallback" Type="System.Text.EncoderFallback" Index="1" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.3;netstandard-1.4;netstandard-1.6;netstandard-2.0;netstandard-2.1" />
@@ -1159,12 +1149,6 @@ The returned <xref:System.IO.Stream>'s <xref:System.IO.Stream.CanRead> and <xref
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1327,12 +1311,6 @@ The returned <xref:System.IO.Stream>'s <xref:System.IO.Stream.CanRead> and <xref
       <AssemblyInfo>
         <AssemblyName>System.Text.Encoding</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1492,10 +1470,6 @@ The returned <xref:System.IO.Stream>'s <xref:System.IO.Stream.CanRead> and <xref
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -1932,12 +1906,6 @@ The returned <xref:System.IO.Stream>'s <xref:System.IO.Stream.CanRead> and <xref
       <AssemblyInfo>
         <AssemblyName>System.Text.Encoding</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2191,10 +2159,6 @@ The returned <xref:System.IO.Stream>'s <xref:System.IO.Stream.CanRead> and <xref
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -2611,12 +2575,6 @@ The returned <xref:System.IO.Stream>'s <xref:System.IO.Stream.CanRead> and <xref
       <AssemblyInfo>
         <AssemblyName>System.Text.Encoding</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2691,10 +2649,6 @@ The returned <xref:System.IO.Stream>'s <xref:System.IO.Stream.CanRead> and <xref
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -2982,12 +2936,6 @@ The returned <xref:System.IO.Stream>'s <xref:System.IO.Stream.CanRead> and <xref
       <AssemblyInfo>
         <AssemblyName>System.Text.Encoding</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -3171,10 +3119,6 @@ The returned <xref:System.IO.Stream>'s <xref:System.IO.Stream.CanRead> and <xref
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -4410,12 +4354,6 @@ The goal is to save this file, then open and decode it as a binary stream.
       <AssemblyInfo>
         <AssemblyName>System.Text.Encoding</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -4483,10 +4421,6 @@ The goal is to save this file, then open and decode it as a binary stream.
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -5237,10 +5171,6 @@ The goal is to save this file, then open and decode it as a binary stream.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlySpan&lt;System.Byte&gt;</ReturnType>
@@ -5377,12 +5307,6 @@ Starting with .NET Framework 4.6, .NET Framework includes one encoding provider,
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5423,12 +5347,6 @@ Starting with .NET Framework 4.6, .NET Framework includes one encoding provider,
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text/EncodingExtensions.xml b/xml/System.Text/EncodingExtensions.xml
index 8a88e9d4812..889a75096b0 100644
--- a/xml/System.Text/EncodingExtensions.xml
+++ b/xml/System.Text/EncodingExtensions.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides extension methods for the encoding types, such as <see cref="T:System.Text.Encoding" />, <see cref="T:System.Text.Encoder" />, and <see cref="T:System.Text.Decoder" />.</summary>
@@ -341,12 +337,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -486,12 +476,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text/EncodingInfo.xml b/xml/System.Text/EncodingInfo.xml
index fee4543a585..da85284f31a 100644
--- a/xml/System.Text/EncodingInfo.xml
+++ b/xml/System.Text/EncodingInfo.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -254,12 +250,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text/EncodingProvider.xml b/xml/System.Text/EncodingProvider.xml
index 2d1107fa981..4662a131916 100644
--- a/xml/System.Text/EncodingProvider.xml
+++ b/xml/System.Text/EncodingProvider.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -188,12 +184,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Encoding</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text/RedactionStringBuilderExtensions.xml b/xml/System.Text/RedactionStringBuilderExtensions.xml
index 95fb62fcde2..a9e7101b742 100644
--- a/xml/System.Text/RedactionStringBuilderExtensions.xml
+++ b/xml/System.Text/RedactionStringBuilderExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/System.Text/Rune.xml b/xml/System.Text/Rune.xml
index 996de8351fb..23e8d44f111 100644
--- a/xml/System.Text/Rune.xml
+++ b/xml/System.Text/Rune.xml
@@ -508,12 +508,6 @@ This method is very similar to <xref:System.Text.Rune.DecodeFromUtf8(System.Read
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -655,12 +649,6 @@ This method has behavior equivalent to <xref:System.Globalization.CharUnicodeInf
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Rune</ReturnType>
       </ReturnValue>
@@ -1858,12 +1846,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Rune</ReturnType>
       </ReturnValue>
@@ -1928,12 +1910,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1962,12 +1938,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Rune</ReturnType>
       </ReturnValue>
@@ -2260,12 +2230,6 @@ The <xref:System.Text.Rune.Utf8SequenceLength> property can be queried ahead of
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text/StringBuilder+AppendInterpolatedStringHandler.xml b/xml/System.Text/StringBuilder+AppendInterpolatedStringHandler.xml
index 8a12234ed5b..9c65c2e2ded 100644
--- a/xml/System.Text/StringBuilder+AppendInterpolatedStringHandler.xml
+++ b/xml/System.Text/StringBuilder+AppendInterpolatedStringHandler.xml
@@ -137,12 +137,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -170,12 +164,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -202,12 +190,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -238,12 +220,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -281,12 +257,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -396,12 +366,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -442,12 +406,6 @@ This is intended to be called only by compiler-generated code. Arguments are not
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Text/StringBuilder+ChunkEnumerator.xml b/xml/System.Text/StringBuilder+ChunkEnumerator.xml
index 163a53a96d8..49d5258bc42 100644
--- a/xml/System.Text/StringBuilder+ChunkEnumerator.xml
+++ b/xml/System.Text/StringBuilder+ChunkEnumerator.xml
@@ -26,12 +26,6 @@
     <BaseTypeName>System.ValueType</BaseTypeName>
   </Base>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Supports simple iteration over the chunks of a <see cref="T:System.Text.StringBuilder" /> instance.</summary>
     <remarks>
diff --git a/xml/System.Text/StringBuilder.xml b/xml/System.Text/StringBuilder.xml
index a3820ff4c0a..9be14c9e9c4 100644
--- a/xml/System.Text/StringBuilder.xml
+++ b/xml/System.Text/StringBuilder.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -277,12 +273,6 @@ The following example shows how to call many of the methods defined by the <xref
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="value" Type="System.String" />
       </Parameters>
@@ -426,10 +416,6 @@ The following example shows how to call many of the methods defined by the <xref
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -505,10 +491,6 @@ The following example shows how to call many of the methods defined by the <xref
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1307,12 +1289,6 @@ The following example shows how to call many of the methods defined by the <xref
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.StringBuilder</ReturnType>
       </ReturnValue>
@@ -1351,12 +1327,6 @@ The following example shows how to call many of the methods defined by the <xref
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.StringBuilder</ReturnType>
       </ReturnValue>
@@ -2022,10 +1992,6 @@ The following example shows how to call many of the methods defined by the <xref
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.3;netstandard-1.4;netstandard-1.5;netstandard-1.6;netstandard-2.0;netstandard-2.1">System.Text.StringBuilder</ReturnType>
@@ -3362,12 +3328,6 @@ The index of a format item is less than 0 (zero), or greater than or equal to th
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.StringBuilder</ReturnType>
       </ReturnValue>
@@ -3501,12 +3461,6 @@ The index of a format item is less than 0 (zero), or greater than or equal to th
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.StringBuilder</ReturnType>
       </ReturnValue>
@@ -3628,12 +3582,6 @@ The index of a format item is less than 0 (zero), or greater than or equal to th
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.StringBuilder</ReturnType>
       </ReturnValue>
@@ -4962,12 +4910,6 @@ The following example instantiates a <xref:System.Text.StringBuilder> object wit
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5184,12 +5126,6 @@ The following example instantiates a <xref:System.Text.StringBuilder> object wit
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5248,12 +5184,6 @@ The `Equals` method performs an ordinal comparison to determine whether the char
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6074,12 +6004,6 @@ foreach (ReadOnlyMemory<char> chunk in sb.GetChunks())
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.StringBuilder</ReturnType>
       </ReturnValue>
@@ -7012,12 +6936,6 @@ In .NET Core and in the .NET Framework 4.0 and later versions, when you instanti
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.StringBuilder</ReturnType>
         <Attributes>
@@ -7206,12 +7124,6 @@ In .NET Core and in the .NET Framework 4.0 and later versions, when you instanti
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.StringBuilder</ReturnType>
         <Attributes>
diff --git a/xml/System.Text/UTF32Encoding.xml b/xml/System.Text/UTF32Encoding.xml
index 0ae818e069a..e87e00825ce 100644
--- a/xml/System.Text/UTF32Encoding.xml
+++ b/xml/System.Text/UTF32Encoding.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -358,12 +354,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -541,10 +531,6 @@
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
@@ -732,10 +718,6 @@
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
@@ -1056,10 +1038,6 @@
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
@@ -1244,10 +1222,6 @@
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
@@ -1959,10 +1933,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlySpan&lt;System.Byte&gt;</ReturnType>
diff --git a/xml/System.Text/UTF7Encoding.xml b/xml/System.Text/UTF7Encoding.xml
index ddac0bd9972..beabc66e056 100644
--- a/xml/System.Text/UTF7Encoding.xml
+++ b/xml/System.Text/UTF7Encoding.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -273,10 +269,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -442,10 +434,6 @@
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -629,10 +617,6 @@
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -951,10 +935,6 @@
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -1138,10 +1118,6 @@
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.Text/UTF8Encoding.xml b/xml/System.Text/UTF8Encoding.xml
index 22072b39d2a..b1ba8cbe090 100644
--- a/xml/System.Text/UTF8Encoding.xml
+++ b/xml/System.Text/UTF8Encoding.xml
@@ -345,12 +345,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -495,10 +489,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -669,10 +659,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -959,10 +945,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1074,10 +1056,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1330,10 +1308,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1589,10 +1563,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1704,12 +1674,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Decoder</ReturnType>
       </ReturnValue>
@@ -1777,12 +1741,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Encoder</ReturnType>
       </ReturnValue>
@@ -2075,12 +2033,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -2164,10 +2116,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System.Text/UnicodeEncoding.xml b/xml/System.Text/UnicodeEncoding.xml
index a747a7e40a0..cafde367e53 100644
--- a/xml/System.Text/UnicodeEncoding.xml
+++ b/xml/System.Text/UnicodeEncoding.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -430,12 +426,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -612,10 +602,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -840,10 +826,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -1175,10 +1157,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -1368,10 +1346,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -2114,10 +2088,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlySpan&lt;System.Byte&gt;</ReturnType>
diff --git a/xml/System.Threading.Channels/Channel.xml b/xml/System.Threading.Channels/Channel.xml
index d8ec2496313..e1db70a2a55 100644
--- a/xml/System.Threading.Channels/Channel.xml
+++ b/xml/System.Threading.Channels/Channel.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides static methods for creating channels.</summary>
diff --git a/xml/System.Threading.Channels/ChannelClosedException.xml b/xml/System.Threading.Channels/ChannelClosedException.xml
index 94feea6e881..c186984f9e8 100644
--- a/xml/System.Threading.Channels/ChannelClosedException.xml
+++ b/xml/System.Threading.Channels/ChannelClosedException.xml
@@ -30,10 +30,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Exception thrown when a channel is used after it's been closed.</summary>
@@ -138,10 +134,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-3.0;netcore-3.1;netstandard-2.1" />
diff --git a/xml/System.Threading.Channels/ChannelReader`1.xml b/xml/System.Threading.Channels/ChannelReader`1.xml
index 7189b7721aa..0fce6215ccf 100644
--- a/xml/System.Threading.Channels/ChannelReader`1.xml
+++ b/xml/System.Threading.Channels/ChannelReader`1.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">Specifies the type of data that may be read from the channel.</typeparam>
@@ -328,12 +324,6 @@ Each <xref:System.Collections.Generic.IAsyncEnumerator%601.MoveNextAsync> call t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Boolean&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Threading.Channels/ChannelWriter`1.xml b/xml/System.Threading.Channels/ChannelWriter`1.xml
index 8ef8959bad1..74b70c4e114 100644
--- a/xml/System.Threading.Channels/ChannelWriter`1.xml
+++ b/xml/System.Threading.Channels/ChannelWriter`1.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">Specifies the type of data that may be written to the channel.</typeparam>
@@ -137,12 +133,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -172,12 +162,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;System.Boolean&gt;</ReturnType>
       </ReturnValue>
@@ -208,12 +192,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Threading.Channels/Channel`1.xml b/xml/System.Threading.Channels/Channel`1.xml
index 3f183688abf..a8221777306 100644
--- a/xml/System.Threading.Channels/Channel`1.xml
+++ b/xml/System.Threading.Channels/Channel`1.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">Specifies the type of data readable and writable in the channel.</typeparam>
diff --git a/xml/System.Threading.Channels/Channel`2.xml b/xml/System.Threading.Channels/Channel`2.xml
index d7dd2c36c77..30b83d1c79f 100644
--- a/xml/System.Threading.Channels/Channel`2.xml
+++ b/xml/System.Threading.Channels/Channel`2.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TWrite">Specifies the type of data that may be written to the channel.</typeparam>
diff --git a/xml/System.Threading.Tasks.Dataflow/ActionBlock`1.xml b/xml/System.Threading.Tasks.Dataflow/ActionBlock`1.xml
index d255ba3ea59..ae7468ae1b8 100644
--- a/xml/System.Threading.Tasks.Dataflow/ActionBlock`1.xml
+++ b/xml/System.Threading.Tasks.Dataflow/ActionBlock`1.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TInput">The type of data that this <see cref="T:System.Threading.Tasks.Dataflow.ActionBlock`1" /> operates on.</typeparam>
diff --git a/xml/System.Threading.Tasks.Dataflow/BatchBlock`1.xml b/xml/System.Threading.Tasks.Dataflow/BatchBlock`1.xml
index 0032db55c24..a6fb00872b8 100644
--- a/xml/System.Threading.Tasks.Dataflow/BatchBlock`1.xml
+++ b/xml/System.Threading.Tasks.Dataflow/BatchBlock`1.xml
@@ -70,10 +70,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">Specifies the type of data put into batches.</typeparam>
diff --git a/xml/System.Threading.Tasks.Dataflow/BatchedJoinBlock`2.xml b/xml/System.Threading.Tasks.Dataflow/BatchedJoinBlock`2.xml
index 823f7c79ad5..66ad7751742 100644
--- a/xml/System.Threading.Tasks.Dataflow/BatchedJoinBlock`2.xml
+++ b/xml/System.Threading.Tasks.Dataflow/BatchedJoinBlock`2.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T1">Specifies the type of data accepted by the block's first target.</typeparam>
diff --git a/xml/System.Threading.Tasks.Dataflow/BatchedJoinBlock`3.xml b/xml/System.Threading.Tasks.Dataflow/BatchedJoinBlock`3.xml
index 0fef1e31c23..074d1028c00 100644
--- a/xml/System.Threading.Tasks.Dataflow/BatchedJoinBlock`3.xml
+++ b/xml/System.Threading.Tasks.Dataflow/BatchedJoinBlock`3.xml
@@ -77,10 +77,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T1">Specifies the type of data accepted by the block's first target.</typeparam>
diff --git a/xml/System.Threading.Tasks.Dataflow/BroadcastBlock`1.xml b/xml/System.Threading.Tasks.Dataflow/BroadcastBlock`1.xml
index e75b648213a..a9d46a37aea 100644
--- a/xml/System.Threading.Tasks.Dataflow/BroadcastBlock`1.xml
+++ b/xml/System.Threading.Tasks.Dataflow/BroadcastBlock`1.xml
@@ -70,10 +70,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">Specifies the type of the data buffered by this dataflow block.</typeparam>
diff --git a/xml/System.Threading.Tasks.Dataflow/BufferBlock`1.xml b/xml/System.Threading.Tasks.Dataflow/BufferBlock`1.xml
index 504d7d40520..7ebf7088097 100644
--- a/xml/System.Threading.Tasks.Dataflow/BufferBlock`1.xml
+++ b/xml/System.Threading.Tasks.Dataflow/BufferBlock`1.xml
@@ -70,10 +70,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">Specifies the type of the data buffered by this dataflow block.</typeparam>
diff --git a/xml/System.Threading.Tasks.Dataflow/DataflowBlock.xml b/xml/System.Threading.Tasks.Dataflow/DataflowBlock.xml
index 6538e4ec375..325fc0c5985 100644
--- a/xml/System.Threading.Tasks.Dataflow/DataflowBlock.xml
+++ b/xml/System.Threading.Tasks.Dataflow/DataflowBlock.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of static (Shared in Visual Basic) methods for working with dataflow blocks.</summary>
diff --git a/xml/System.Threading.Tasks.Dataflow/DataflowBlockOptions.xml b/xml/System.Threading.Tasks.Dataflow/DataflowBlockOptions.xml
index e87069b437b..575a78c9568 100644
--- a/xml/System.Threading.Tasks.Dataflow/DataflowBlockOptions.xml
+++ b/xml/System.Threading.Tasks.Dataflow/DataflowBlockOptions.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides options used to configure the processing performed by dataflow blocks.</summary>
diff --git a/xml/System.Threading.Tasks.Dataflow/DataflowMessageHeader.xml b/xml/System.Threading.Tasks.Dataflow/DataflowMessageHeader.xml
index 2880e2494e8..bbc768262ed 100644
--- a/xml/System.Threading.Tasks.Dataflow/DataflowMessageHeader.xml
+++ b/xml/System.Threading.Tasks.Dataflow/DataflowMessageHeader.xml
@@ -104,12 +104,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Threading.Tasks.Dataflow/IDataflowBlock.xml b/xml/System.Threading.Tasks.Dataflow/IDataflowBlock.xml
index 0fc90b145fa..122eaef9cd5 100644
--- a/xml/System.Threading.Tasks.Dataflow/IDataflowBlock.xml
+++ b/xml/System.Threading.Tasks.Dataflow/IDataflowBlock.xml
@@ -22,12 +22,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents a dataflow block.</summary>
     <remarks>
diff --git a/xml/System.Threading.Tasks.Dataflow/IPropagatorBlock`2.xml b/xml/System.Threading.Tasks.Dataflow/IPropagatorBlock`2.xml
index 75fce602095..17ba37e7280 100644
--- a/xml/System.Threading.Tasks.Dataflow/IPropagatorBlock`2.xml
+++ b/xml/System.Threading.Tasks.Dataflow/IPropagatorBlock`2.xml
@@ -45,12 +45,6 @@
       <InterfaceName>System.Threading.Tasks.Dataflow.ITargetBlock&lt;TInput&gt;</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TInput">Specifies the type of data accepted by the  <see cref="T:System.Threading.Tasks.Dataflow.IPropagatorBlock`2" />.</typeparam>
     <typeparam name="TOutput">Specifies the type of data supplied by the  <see cref="T:System.Threading.Tasks.Dataflow.IPropagatorBlock`2" />.</typeparam>
diff --git a/xml/System.Threading.Tasks.Dataflow/IReceivableSourceBlock`1.xml b/xml/System.Threading.Tasks.Dataflow/IReceivableSourceBlock`1.xml
index 0fceca2e4ff..784f8eeeb73 100644
--- a/xml/System.Threading.Tasks.Dataflow/IReceivableSourceBlock`1.xml
+++ b/xml/System.Threading.Tasks.Dataflow/IReceivableSourceBlock`1.xml
@@ -76,12 +76,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Threading.Tasks.Dataflow/ISourceBlock`1.xml b/xml/System.Threading.Tasks.Dataflow/ISourceBlock`1.xml
index b9bbfb3f6e4..3c308245a25 100644
--- a/xml/System.Threading.Tasks.Dataflow/ISourceBlock`1.xml
+++ b/xml/System.Threading.Tasks.Dataflow/ISourceBlock`1.xml
@@ -39,12 +39,6 @@
       <InterfaceName>System.Threading.Tasks.Dataflow.IDataflowBlock</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TOutput">Specifies the type of data supplied by the  <see cref="T:System.Threading.Tasks.Dataflow.ISourceBlock`1" />.</typeparam>
     <summary>Represents a dataflow block that is a source of data.</summary>
diff --git a/xml/System.Threading.Tasks.Dataflow/ITargetBlock`1.xml b/xml/System.Threading.Tasks.Dataflow/ITargetBlock`1.xml
index 5d757a8f259..64e111ed0fe 100644
--- a/xml/System.Threading.Tasks.Dataflow/ITargetBlock`1.xml
+++ b/xml/System.Threading.Tasks.Dataflow/ITargetBlock`1.xml
@@ -74,12 +74,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Dataflow.DataflowMessageStatus</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Threading.Tasks.Dataflow/JoinBlock`2.xml b/xml/System.Threading.Tasks.Dataflow/JoinBlock`2.xml
index 060393f9f18..29168e07333 100644
--- a/xml/System.Threading.Tasks.Dataflow/JoinBlock`2.xml
+++ b/xml/System.Threading.Tasks.Dataflow/JoinBlock`2.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T1">Specifies the type of data accepted by the block's first target.</typeparam>
diff --git a/xml/System.Threading.Tasks.Dataflow/JoinBlock`3.xml b/xml/System.Threading.Tasks.Dataflow/JoinBlock`3.xml
index 30321b51e25..ee04a470d76 100644
--- a/xml/System.Threading.Tasks.Dataflow/JoinBlock`3.xml
+++ b/xml/System.Threading.Tasks.Dataflow/JoinBlock`3.xml
@@ -77,10 +77,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T1">Specifies the type of data accepted by the block's first target.</typeparam>
diff --git a/xml/System.Threading.Tasks.Dataflow/TransformBlock`2.xml b/xml/System.Threading.Tasks.Dataflow/TransformBlock`2.xml
index 75d7063ab32..ce636a353b9 100644
--- a/xml/System.Threading.Tasks.Dataflow/TransformBlock`2.xml
+++ b/xml/System.Threading.Tasks.Dataflow/TransformBlock`2.xml
@@ -72,10 +72,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TInput">Specifies the type of data received and operated on by this <see cref="T:System.Threading.Tasks.Dataflow.TransformBlock`2" />.</typeparam>
diff --git a/xml/System.Threading.Tasks.Dataflow/TransformManyBlock`2.xml b/xml/System.Threading.Tasks.Dataflow/TransformManyBlock`2.xml
index 058f4b4acb6..9eda22c02a4 100644
--- a/xml/System.Threading.Tasks.Dataflow/TransformManyBlock`2.xml
+++ b/xml/System.Threading.Tasks.Dataflow/TransformManyBlock`2.xml
@@ -72,10 +72,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TInput">Specifies the type of data received and operated on by this <see cref="T:System.Threading.Tasks.Dataflow.TransformManyBlock`2" />.</typeparam>
diff --git a/xml/System.Threading.Tasks.Dataflow/WriteOnceBlock`1.xml b/xml/System.Threading.Tasks.Dataflow/WriteOnceBlock`1.xml
index 5f6b4f668ef..001492fe4a7 100644
--- a/xml/System.Threading.Tasks.Dataflow/WriteOnceBlock`1.xml
+++ b/xml/System.Threading.Tasks.Dataflow/WriteOnceBlock`1.xml
@@ -70,10 +70,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">Specifies the type of the data buffered by this dataflow block.</typeparam>
diff --git a/xml/System.Threading.Tasks.Sources/IValueTaskSource.xml b/xml/System.Threading.Tasks.Sources/IValueTaskSource.xml
index e06aa6a388c..f914a77e77e 100644
--- a/xml/System.Threading.Tasks.Sources/IValueTaskSource.xml
+++ b/xml/System.Threading.Tasks.Sources/IValueTaskSource.xml
@@ -39,12 +39,6 @@
     <TypeForwarding From="System.Threading.Tasks.Extensions" FromVersion="4.3.1.0" To="System.Runtime" ToVersion="4.2.2.0" FrameworkAlternate="netcore-3.1" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents an object that can be wrapped by a <see cref="T:System.Threading.Tasks.ValueTask" />.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Threading.Tasks.Sources/IValueTaskSource`1.xml b/xml/System.Threading.Tasks.Sources/IValueTaskSource`1.xml
index cfda88a7993..b842a470982 100644
--- a/xml/System.Threading.Tasks.Sources/IValueTaskSource`1.xml
+++ b/xml/System.Threading.Tasks.Sources/IValueTaskSource`1.xml
@@ -46,12 +46,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="TResult">The type of the result produced by the <see cref="T:System.Threading.Tasks.Sources.IValueTaskSource`1" />.</typeparam>
     <summary>Represents an object that can be wrapped by a <see cref="T:System.Threading.Tasks.ValueTask`1" />.</summary>
@@ -83,12 +77,6 @@
         <AssemblyName>System.Threading.Tasks.Extensions</AssemblyName>
         <AssemblyVersion>4.2.0.1</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TResult</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Threading.Tasks.Sources/ManualResetValueTaskSourceCore`1.xml b/xml/System.Threading.Tasks.Sources/ManualResetValueTaskSourceCore`1.xml
index 2ce89d87cf9..bbee347da14 100644
--- a/xml/System.Threading.Tasks.Sources/ManualResetValueTaskSourceCore`1.xml
+++ b/xml/System.Threading.Tasks.Sources/ManualResetValueTaskSourceCore`1.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TResult" />
@@ -167,12 +163,6 @@
         <AssemblyName>Microsoft.Bcl.AsyncInterfaces</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Threading.Tasks/ConcurrentExclusiveSchedulerPair.xml b/xml/System.Threading.Tasks/ConcurrentExclusiveSchedulerPair.xml
index 89dea1ba658..49b53bac9f7 100644
--- a/xml/System.Threading.Tasks/ConcurrentExclusiveSchedulerPair.xml
+++ b/xml/System.Threading.Tasks/ConcurrentExclusiveSchedulerPair.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Concurrent={ConcurrentTaskCountForDebugger}, Exclusive={ExclusiveTaskCountForDebugger}, Mode={ModeForDebugger}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Concurrent={ConcurrentTaskCountForDebugger}, Exclusive={ExclusiveTaskCountForDebugger}, Mode={ModeForDebugger}")&gt;]</AttributeName>
diff --git a/xml/System.Threading.Tasks/Parallel.xml b/xml/System.Threading.Tasks/Parallel.xml
index d6953cf8efe..efaed104c86 100644
--- a/xml/System.Threading.Tasks/Parallel.xml
+++ b/xml/System.Threading.Tasks/Parallel.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides support for parallel loops and regions.</summary>
diff --git a/xml/System.Threading.Tasks/ParallelOptions.xml b/xml/System.Threading.Tasks/ParallelOptions.xml
index b53203863cd..405f96ac7de 100644
--- a/xml/System.Threading.Tasks/ParallelOptions.xml
+++ b/xml/System.Threading.Tasks/ParallelOptions.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Stores options that configure the operation of methods on the <see cref="T:System.Threading.Tasks.Parallel" /> class.</summary>
diff --git a/xml/System.Threading.Tasks/Task.xml b/xml/System.Threading.Tasks/Task.xml
index d50b02fb187..1b9b7d11f99 100644
--- a/xml/System.Threading.Tasks/Task.xml
+++ b/xml/System.Threading.Tasks/Task.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Id = {Id}, Status = {Status}, Method = {DebuggerDisplayMethodDescription}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Id = {Id}, Status = {Status}, Method = {DebuggerDisplayMethodDescription}")&gt;]</AttributeName>
@@ -324,12 +320,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="action" Type="System.Action&lt;System.Object&gt;">
           <Attributes>
@@ -458,12 +448,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="action" Type="System.Action&lt;System.Object&gt;">
           <Attributes>
@@ -528,12 +512,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="action" Type="System.Action&lt;System.Object&gt;">
           <Attributes>
@@ -598,12 +576,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="action" Type="System.Action&lt;System.Object&gt;">
           <Attributes>
@@ -679,10 +651,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1747,12 +1715,6 @@ End Sub
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;TResult&gt;</ReturnType>
       </ReturnValue>
@@ -2038,12 +2000,6 @@ End Sub
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;TResult&gt;</ReturnType>
       </ReturnValue>
@@ -2116,12 +2072,6 @@ End Sub
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;TResult&gt;</ReturnType>
       </ReturnValue>
@@ -3098,10 +3048,6 @@ Task t Status: RanToCompletion, Result: 42
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.AggregateException</ReturnType>
diff --git a/xml/System.Threading.Tasks/TaskAsyncEnumerableExtensions.xml b/xml/System.Threading.Tasks/TaskAsyncEnumerableExtensions.xml
index b0b251afa05..0513772a984 100644
--- a/xml/System.Threading.Tasks/TaskAsyncEnumerableExtensions.xml
+++ b/xml/System.Threading.Tasks/TaskAsyncEnumerableExtensions.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of static methods for configuring <see cref="T:System.Threading.Tasks.Task" />-related behaviors on asynchronous enumerables and disposables.</summary>
diff --git a/xml/System.Threading.Tasks/TaskCanceledException.xml b/xml/System.Threading.Tasks/TaskCanceledException.xml
index 81ad7df2c1d..bd32d6015f8 100644
--- a/xml/System.Threading.Tasks/TaskCanceledException.xml
+++ b/xml/System.Threading.Tasks/TaskCanceledException.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -289,10 +285,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
diff --git a/xml/System.Threading.Tasks/TaskCompletionSource.xml b/xml/System.Threading.Tasks/TaskCompletionSource.xml
index d2f9ea20c4c..87f7f6b3921 100644
--- a/xml/System.Threading.Tasks/TaskCompletionSource.xml
+++ b/xml/System.Threading.Tasks/TaskCompletionSource.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the producer side of a <see cref="T:System.Threading.Tasks.Task" /> unbound to a delegate, providing access to the consumer side through the <see cref="T:System.Threading.Tasks.Task" /> property.</summary>
@@ -80,12 +76,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="state" Type="System.Object" />
       </Parameters>
@@ -146,12 +136,6 @@ The <xref:System.Threading.Tasks.Task> created by this instance and accessible t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="state" Type="System.Object" />
         <Parameter Name="creationOptions" Type="System.Threading.Tasks.TaskCreationOptions" />
diff --git a/xml/System.Threading.Tasks/TaskCompletionSource`1.xml b/xml/System.Threading.Tasks/TaskCompletionSource`1.xml
index a33f67d399e..b501115991f 100644
--- a/xml/System.Threading.Tasks/TaskCompletionSource`1.xml
+++ b/xml/System.Threading.Tasks/TaskCompletionSource`1.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TResult">The type of the result value associated with this <see cref="T:System.Threading.Tasks.TaskCompletionSource`1" />.</typeparam>
@@ -181,12 +177,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="state" Type="System.Object" />
       </Parameters>
@@ -286,12 +276,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="state" Type="System.Object" />
         <Parameter Name="creationOptions" Type="System.Threading.Tasks.TaskCreationOptions" />
diff --git a/xml/System.Threading.Tasks/TaskExtensions.xml b/xml/System.Threading.Tasks/TaskExtensions.xml
index 9c775f74b32..c8f9081bb6d 100644
--- a/xml/System.Threading.Tasks/TaskExtensions.xml
+++ b/xml/System.Threading.Tasks/TaskExtensions.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/System.Threading.Tasks/TaskFactory.xml b/xml/System.Threading.Tasks/TaskFactory.xml
index 340b35c1beb..453468d5a0f 100644
--- a/xml/System.Threading.Tasks/TaskFactory.xml
+++ b/xml/System.Threading.Tasks/TaskFactory.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides support for creating and scheduling <see cref="T:System.Threading.Tasks.Task" /> objects.</summary>
@@ -253,12 +249,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="scheduler" Type="System.Threading.Tasks.TaskScheduler" />
       </Parameters>
@@ -372,12 +362,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="cancellationToken" Type="System.Threading.CancellationToken" />
         <Parameter Name="creationOptions" Type="System.Threading.Tasks.TaskCreationOptions" />
@@ -5419,10 +5403,6 @@ The NotOn\* and OnlyOn\* <xref:System.Threading.Tasks.TaskContinuationOptions>,
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.TaskScheduler</ReturnType>
@@ -6213,12 +6193,6 @@ The NotOn\* and OnlyOn\* <xref:System.Threading.Tasks.TaskContinuationOptions>,
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;TResult&gt;</ReturnType>
       </ReturnValue>
@@ -6453,12 +6427,6 @@ The NotOn\* and OnlyOn\* <xref:System.Threading.Tasks.TaskContinuationOptions>,
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;TResult&gt;</ReturnType>
       </ReturnValue>
@@ -6537,12 +6505,6 @@ The NotOn\* and OnlyOn\* <xref:System.Threading.Tasks.TaskContinuationOptions>,
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;TResult&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Threading.Tasks/TaskFactory`1.xml b/xml/System.Threading.Tasks/TaskFactory`1.xml
index 0f945eddd7b..4506959ba01 100644
--- a/xml/System.Threading.Tasks/TaskFactory`1.xml
+++ b/xml/System.Threading.Tasks/TaskFactory`1.xml
@@ -66,10 +66,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TResult">The return value of the <see cref="T:System.Threading.Tasks.Task`1" /> objects that the methods of this class create.</typeparam>
@@ -259,12 +255,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="scheduler" Type="System.Threading.Tasks.TaskScheduler" />
       </Parameters>
@@ -377,12 +367,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="cancellationToken" Type="System.Threading.CancellationToken" />
         <Parameter Name="creationOptions" Type="System.Threading.Tasks.TaskCreationOptions" />
@@ -2891,10 +2875,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.TaskScheduler</ReturnType>
diff --git a/xml/System.Threading.Tasks/TaskScheduler.xml b/xml/System.Threading.Tasks/TaskScheduler.xml
index 3a3bf0ec82d..9ab13744769 100644
--- a/xml/System.Threading.Tasks/TaskScheduler.xml
+++ b/xml/System.Threading.Tasks/TaskScheduler.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Id={Id}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Id={Id}")&gt;]</AttributeName>
diff --git a/xml/System.Threading.Tasks/TaskSchedulerException.xml b/xml/System.Threading.Tasks/TaskSchedulerException.xml
index ef9cc9afbf2..b3b25d9cef7 100644
--- a/xml/System.Threading.Tasks/TaskSchedulerException.xml
+++ b/xml/System.Threading.Tasks/TaskSchedulerException.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -285,10 +281,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
diff --git a/xml/System.Threading.Tasks/TaskToAsyncResult.xml b/xml/System.Threading.Tasks/TaskToAsyncResult.xml
index 54903624e4a..6d207e9f80b 100644
--- a/xml/System.Threading.Tasks/TaskToAsyncResult.xml
+++ b/xml/System.Threading.Tasks/TaskToAsyncResult.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods for using <see cref="T:System.Threading.Tasks.Task" /> to implement the Asynchronous Programming Model pattern based on "Begin" and "End" methods.</summary>
diff --git a/xml/System.Threading.Tasks/Task`1.xml b/xml/System.Threading.Tasks/Task`1.xml
index ef3b5bc8f6e..877a54bb046 100644
--- a/xml/System.Threading.Tasks/Task`1.xml
+++ b/xml/System.Threading.Tasks/Task`1.xml
@@ -66,10 +66,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Id = {Id}, Status = {Status}, Method = {DebuggerDisplayMethodDescription}, Result = {DebuggerDisplayResultDescription}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Id = {Id}, Status = {Status}, Method = {DebuggerDisplayMethodDescription}, Result = {DebuggerDisplayResultDescription}")&gt;]</AttributeName>
@@ -230,12 +226,6 @@ For operations that do not return a value, you use the <xref:System.Threading.Ta
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="function" Type="System.Func&lt;System.Object,TResult&gt;">
           <Attributes>
@@ -414,12 +404,6 @@ For operations that do not return a value, you use the <xref:System.Threading.Ta
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="function" Type="System.Func&lt;System.Object,TResult&gt;">
           <Attributes>
@@ -487,12 +471,6 @@ For operations that do not return a value, you use the <xref:System.Threading.Ta
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="function" Type="System.Func&lt;System.Object,TResult&gt;">
           <Attributes>
@@ -620,12 +598,6 @@ For operations that do not return a value, you use the <xref:System.Threading.Ta
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="function" Type="System.Func&lt;System.Object,TResult&gt;">
           <Attributes>
@@ -1610,12 +1582,6 @@ For operations that do not return a value, you use the <xref:System.Threading.Ta
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;TNewResult&gt;</ReturnType>
       </ReturnValue>
@@ -1924,12 +1890,6 @@ For operations that do not return a value, you use the <xref:System.Threading.Ta
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;TNewResult&gt;</ReturnType>
       </ReturnValue>
@@ -2003,12 +1963,6 @@ For operations that do not return a value, you use the <xref:System.Threading.Ta
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;TNewResult&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Threading.Tasks/TimeProviderTaskExtensions.xml b/xml/System.Threading.Tasks/TimeProviderTaskExtensions.xml
index d6239bfc755..6f8b5900c85 100644
--- a/xml/System.Threading.Tasks/TimeProviderTaskExtensions.xml
+++ b/xml/System.Threading.Tasks/TimeProviderTaskExtensions.xml
@@ -18,10 +18,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>
diff --git a/xml/System.Threading.Tasks/UnobservedTaskExceptionEventArgs.xml b/xml/System.Threading.Tasks/UnobservedTaskExceptionEventArgs.xml
index 3af35c8ed02..3ee8b9c97fd 100644
--- a/xml/System.Threading.Tasks/UnobservedTaskExceptionEventArgs.xml
+++ b/xml/System.Threading.Tasks/UnobservedTaskExceptionEventArgs.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the event that is raised when a faulted <see cref="T:System.Threading.Tasks.Task" />'s exception goes unobserved.</summary>
diff --git a/xml/System.Threading.Tasks/ValueTask.xml b/xml/System.Threading.Tasks/ValueTask.xml
index d49b97554bc..dd45dfc8cf7 100644
--- a/xml/System.Threading.Tasks/ValueTask.xml
+++ b/xml/System.Threading.Tasks/ValueTask.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an awaitable result of an asynchronous operation.</summary>
@@ -304,12 +300,6 @@ This method either returns the wrapped task object, if one exists, or it manufac
         <AssemblyName>System.Threading.Tasks.Extensions</AssemblyName>
         <AssemblyVersion>4.2.0.1</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -445,12 +435,6 @@ Two <xref:System.Threading.Tasks.ValueTask> instances are equal when they wrap t
       <AssemblyInfo>
         <AssemblyName>System.Threading.Tasks.Extensions</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.ValueTask&lt;TResult&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Threading.Tasks/ValueTask`1.xml b/xml/System.Threading.Tasks/ValueTask`1.xml
index 9189abba3e5..661c6cd5ce2 100644
--- a/xml/System.Threading.Tasks/ValueTask`1.xml
+++ b/xml/System.Threading.Tasks/ValueTask`1.xml
@@ -73,10 +73,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="TResult">The result.</typeparam>
@@ -384,12 +380,6 @@ This method either returns the wrapped task object, if one exists, or it manufac
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -946,12 +936,6 @@ If this <xref:System.Threading.Tasks.ValueTask%601> has completed successfully,
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Threading/AbandonedMutexException.xml b/xml/System.Threading/AbandonedMutexException.xml
index 0182d14f83c..aceeb02f966 100644
--- a/xml/System.Threading/AbandonedMutexException.xml
+++ b/xml/System.Threading/AbandonedMutexException.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -323,10 +319,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Threading/AsyncFlowControl.xml b/xml/System.Threading/AsyncFlowControl.xml
index 5713c4dfd6c..b4c51db8235 100644
--- a/xml/System.Threading/AsyncFlowControl.xml
+++ b/xml/System.Threading/AsyncFlowControl.xml
@@ -161,12 +161,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Threading/AsyncLocalValueChangedArgs`1.xml b/xml/System.Threading/AsyncLocalValueChangedArgs`1.xml
index 0d730f5d1c8..90c6bcc0944 100644
--- a/xml/System.Threading/AsyncLocalValueChangedArgs`1.xml
+++ b/xml/System.Threading/AsyncLocalValueChangedArgs`1.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of the data.</typeparam>
diff --git a/xml/System.Threading/AsyncLocal`1.xml b/xml/System.Threading/AsyncLocal`1.xml
index 35a92b3a603..ae25f4a8eaf 100644
--- a/xml/System.Threading/AsyncLocal`1.xml
+++ b/xml/System.Threading/AsyncLocal`1.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">The type of the ambient data.</typeparam>
diff --git a/xml/System.Threading/BarrierPostPhaseException.xml b/xml/System.Threading/BarrierPostPhaseException.xml
index 5d8e06e4014..2efbf1b2386 100644
--- a/xml/System.Threading/BarrierPostPhaseException.xml
+++ b/xml/System.Threading/BarrierPostPhaseException.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -284,10 +280,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Threading/CancellationToken.xml b/xml/System.Threading/CancellationToken.xml
index 18e0d624bf6..31c66102a8d 100644
--- a/xml/System.Threading/CancellationToken.xml
+++ b/xml/System.Threading/CancellationToken.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("IsCancellationRequested = {IsCancellationRequested}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("IsCancellationRequested = {IsCancellationRequested}")&gt;]</AttributeName>
@@ -723,12 +719,6 @@ For the definition of equality, see the <xref:System.Threading.CancellationToken
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.CancellationTokenRegistration</ReturnType>
       </ReturnValue>
@@ -793,12 +783,6 @@ For the definition of equality, see the <xref:System.Threading.CancellationToken
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.CancellationTokenRegistration</ReturnType>
       </ReturnValue>
@@ -1268,10 +1252,6 @@ The  <xref:System.Threading.ExecutionContext> is not captured or flowed
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.WaitHandle</ReturnType>
diff --git a/xml/System.Threading/CancellationTokenRegistration.xml b/xml/System.Threading/CancellationTokenRegistration.xml
index ce9c675a47d..152979fcfe1 100644
--- a/xml/System.Threading/CancellationTokenRegistration.xml
+++ b/xml/System.Threading/CancellationTokenRegistration.xml
@@ -237,12 +237,6 @@ This method stores in the task it returns all non-usage exceptions that the meth
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Threading/CancellationTokenSource.xml b/xml/System.Threading/CancellationTokenSource.xml
index 1e451e7facf..6d2b8f6eaba 100644
--- a/xml/System.Threading/CancellationTokenSource.xml
+++ b/xml/System.Threading/CancellationTokenSource.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -668,12 +664,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.CancellationTokenSource</ReturnType>
         <Attributes>
diff --git a/xml/System.Threading/CompressedStack.xml b/xml/System.Threading/CompressedStack.xml
index dafe21cab9f..932d1497443 100644
--- a/xml/System.Threading/CompressedStack.xml
+++ b/xml/System.Threading/CompressedStack.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Threading/CountdownEvent.xml b/xml/System.Threading/CountdownEvent.xml
index e8aa9e94b37..df9eaab0372 100644
--- a/xml/System.Threading/CountdownEvent.xml
+++ b/xml/System.Threading/CountdownEvent.xml
@@ -1207,10 +1207,6 @@ The <see cref="T:System.Threading.CancellationTokenSource" /> that created <para
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.WaitHandle</ReturnType>
diff --git a/xml/System.Threading/EventWaitHandle.xml b/xml/System.Threading/EventWaitHandle.xml
index edc2406811e..b1116e74c5a 100644
--- a/xml/System.Threading/EventWaitHandle.xml
+++ b/xml/System.Threading/EventWaitHandle.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -216,10 +212,6 @@ The <xref:System.Threading.EventWaitHandle> class allows threads to communicate
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="initialState" Type="System.Boolean" />
@@ -309,10 +301,6 @@ There was some other error. The `HResult` property may provide more information.
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="initialState" Type="System.Boolean" />
diff --git a/xml/System.Threading/EventWaitHandleAcl.xml b/xml/System.Threading/EventWaitHandleAcl.xml
index aeec5aef5f8..f23f87a9ae3 100644
--- a/xml/System.Threading/EventWaitHandleAcl.xml
+++ b/xml/System.Threading/EventWaitHandleAcl.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a Windows-specific extension method for creating <see cref="T:System.Threading.EventWaitHandle" /> objects with specific access control list (ACL) security.</summary>
@@ -48,12 +44,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.EventWaitHandle</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Threading/ExecutionContext.xml b/xml/System.Threading/ExecutionContext.xml
index afc935467c1..c8334f4fa4d 100644
--- a/xml/System.Threading/ExecutionContext.xml
+++ b/xml/System.Threading/ExecutionContext.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -126,10 +122,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Threading/HostExecutionContext.xml b/xml/System.Threading/HostExecutionContext.xml
index a9e718dc8e7..5358b7197d1 100644
--- a/xml/System.Threading/HostExecutionContext.xml
+++ b/xml/System.Threading/HostExecutionContext.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates and propagates the host execution context across threads.</summary>
@@ -199,10 +195,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Threading/HostExecutionContextManager.xml b/xml/System.Threading/HostExecutionContextManager.xml
index b271d221552..d8c064048ee 100644
--- a/xml/System.Threading/HostExecutionContextManager.xml
+++ b/xml/System.Threading/HostExecutionContextManager.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the functionality that allows a common language runtime host to participate in the flow, or migration, of the execution context.</summary>
@@ -127,10 +123,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Threading/Interlocked.xml b/xml/System.Threading/Interlocked.xml
index 08ef3b6ca38..5a730f10d08 100644
--- a/xml/System.Threading/Interlocked.xml
+++ b/xml/System.Threading/Interlocked.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0">
       <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -911,10 +907,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.Success)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.Success)&gt;]</AttributeName>
@@ -1950,10 +1942,6 @@ If `comparand` and the object in `location1` are equal by reference, then `value
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.Success)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.Success)&gt;]</AttributeName>
diff --git a/xml/System.Threading/LazyInitializer.xml b/xml/System.Threading/LazyInitializer.xml
index 591b5cca406..5becb4f265b 100644
--- a/xml/System.Threading/LazyInitializer.xml
+++ b/xml/System.Threading/LazyInitializer.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides lazy initialization routines.</summary>
diff --git a/xml/System.Threading/LockCookie.xml b/xml/System.Threading/LockCookie.xml
index 4d6a0f39aa0..37a70c7435a 100644
--- a/xml/System.Threading/LockCookie.xml
+++ b/xml/System.Threading/LockCookie.xml
@@ -127,12 +127,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Threading/LockRecursionException.xml b/xml/System.Threading/LockRecursionException.xml
index abd8e8dec61..25bd04e292b 100644
--- a/xml/System.Threading/LockRecursionException.xml
+++ b/xml/System.Threading/LockRecursionException.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -260,10 +256,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
diff --git a/xml/System.Threading/ManualResetEventSlim.xml b/xml/System.Threading/ManualResetEventSlim.xml
index 2653e6fe7c8..6e814ea3799 100644
--- a/xml/System.Threading/ManualResetEventSlim.xml
+++ b/xml/System.Threading/ManualResetEventSlim.xml
@@ -912,10 +912,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.WaitHandle</ReturnType>
diff --git a/xml/System.Threading/Monitor.xml b/xml/System.Threading/Monitor.xml
index 18222563e66..7c57474999c 100644
--- a/xml/System.Threading/Monitor.xml
+++ b/xml/System.Threading/Monitor.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Threading/Mutex.xml b/xml/System.Threading/Mutex.xml
index d2ae685496b..518a376e730 100644
--- a/xml/System.Threading/Mutex.xml
+++ b/xml/System.Threading/Mutex.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -301,10 +297,6 @@
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -413,10 +405,6 @@ There was some other error. The `HResult` property may provide more information.
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
diff --git a/xml/System.Threading/MutexAcl.xml b/xml/System.Threading/MutexAcl.xml
index 330e99c9a11..a63d615d350 100644
--- a/xml/System.Threading/MutexAcl.xml
+++ b/xml/System.Threading/MutexAcl.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a Windows-specific extension method for creating <see cref="T:System.Threading.Mutex" /> objects with specific access control list (ACL) security.</summary>
@@ -48,12 +44,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Mutex</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Threading/Overlapped.xml b/xml/System.Threading/Overlapped.xml
index 67ed6412ad8..f25d3ca66d9 100644
--- a/xml/System.Threading/Overlapped.xml
+++ b/xml/System.Threading/Overlapped.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -435,10 +431,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -599,10 +591,6 @@
           <AttributeName Language="C#">[System.Obsolete("This overload is not safe and has been deprecated. Use Pack(IOCompletionCallback?, object?) instead.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This overload is not safe and has been deprecated. Use Pack(IOCompletionCallback?, object?) instead.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
           <AttributeName Language="C#">[System.Obsolete("This method is not safe.  Use Pack (iocb, userData) instead.  http://go.microsoft.com/fwlink/?linkid=14202")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This method is not safe.  Use Pack (iocb, userData) instead.  http://go.microsoft.com/fwlink/?linkid=14202")&gt;]</AttributeName>
@@ -750,10 +738,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -835,10 +819,6 @@
           <AttributeName Language="C#">[System.Obsolete("This overload is not safe and has been deprecated. Use UnsafePack(IOCompletionCallback?, object?) instead.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This overload is not safe and has been deprecated. Use UnsafePack(IOCompletionCallback?, object?) instead.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
           <AttributeName Language="C#">[System.Obsolete("This method is not safe.  Use UnsafePack (iocb, userData) instead.  http://go.microsoft.com/fwlink/?linkid=14202")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This method is not safe.  Use UnsafePack (iocb, userData) instead.  http://go.microsoft.com/fwlink/?linkid=14202")&gt;]</AttributeName>
diff --git a/xml/System.Threading/PeriodicTimer.xml b/xml/System.Threading/PeriodicTimer.xml
index 8eda36dcdd9..b600ce87b07 100644
--- a/xml/System.Threading/PeriodicTimer.xml
+++ b/xml/System.Threading/PeriodicTimer.xml
@@ -74,12 +74,6 @@ This timer is intended to be used only by a single consumer at a time: only one
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="period" Type="System.TimeSpan" Index="0" FrameworkAlternate="net-8.0;net-9.0" />
         <Parameter Name="timeProvider" Type="System.TimeProvider" Index="1" FrameworkAlternate="net-8.0;net-9.0" />
diff --git a/xml/System.Threading/PreAllocatedOverlapped.xml b/xml/System.Threading/PreAllocatedOverlapped.xml
index 3daa62e5354..c378ac886c7 100644
--- a/xml/System.Threading/PreAllocatedOverlapped.xml
+++ b/xml/System.Threading/PreAllocatedOverlapped.xml
@@ -90,10 +90,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -236,10 +232,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.PreAllocatedOverlapped</ReturnType>
diff --git a/xml/System.Threading/RegisteredWaitHandle.xml b/xml/System.Threading/RegisteredWaitHandle.xml
index 7f521a36be9..fbe4faff00e 100644
--- a/xml/System.Threading/RegisteredWaitHandle.xml
+++ b/xml/System.Threading/RegisteredWaitHandle.xml
@@ -143,10 +143,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Threading/Semaphore.xml b/xml/System.Threading/Semaphore.xml
index 23acc03453f..421bce65eda 100644
--- a/xml/System.Threading/Semaphore.xml
+++ b/xml/System.Threading/Semaphore.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -219,12 +215,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="initialCount" Type="System.Int32" />
         <Parameter Name="maximumCount" Type="System.Int32" />
@@ -330,10 +320,6 @@ There was some other error. The `HResult` property may provide more information.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Threading/SemaphoreAcl.xml b/xml/System.Threading/SemaphoreAcl.xml
index a9d4a236cef..04bb3f5350b 100644
--- a/xml/System.Threading/SemaphoreAcl.xml
+++ b/xml/System.Threading/SemaphoreAcl.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a Windows-specific extension method for creating <see cref="T:System.Threading.Semaphore" /> objects with specific access control list (ACL) security.</summary>
@@ -48,12 +44,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Semaphore</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Threading/SemaphoreFullException.xml b/xml/System.Threading/SemaphoreFullException.xml
index 8044f94fddd..b4bd57a2ef5 100644
--- a/xml/System.Threading/SemaphoreFullException.xml
+++ b/xml/System.Threading/SemaphoreFullException.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -275,10 +271,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
diff --git a/xml/System.Threading/SemaphoreSlim.xml b/xml/System.Threading/SemaphoreSlim.xml
index 8d7fb0e6c36..2c07663d861 100644
--- a/xml/System.Threading/SemaphoreSlim.xml
+++ b/xml/System.Threading/SemaphoreSlim.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Current Count = {m_currentCount}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Current Count = {m_currentCount}")&gt;]</AttributeName>
diff --git a/xml/System.Threading/SpinWait.xml b/xml/System.Threading/SpinWait.xml
index d260f1aeb7f..4c224cb9535 100644
--- a/xml/System.Threading/SpinWait.xml
+++ b/xml/System.Threading/SpinWait.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides support for spin-based waiting.</summary>
diff --git a/xml/System.Threading/SynchronizationContext.xml b/xml/System.Threading/SynchronizationContext.xml
index 77d971cc4db..a5a2e2b1e8f 100644
--- a/xml/System.Threading/SynchronizationContext.xml
+++ b/xml/System.Threading/SynchronizationContext.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the basic functionality for propagating a synchronization context in various synchronization models.</summary>
@@ -200,10 +196,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -523,10 +515,6 @@
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Threading/SynchronizationLockException.xml b/xml/System.Threading/SynchronizationLockException.xml
index dbe4946b47a..c75e380a5b3 100644
--- a/xml/System.Threading/SynchronizationLockException.xml
+++ b/xml/System.Threading/SynchronizationLockException.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -242,10 +238,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Threading/Thread.xml b/xml/System.Threading/Thread.xml
index 1ec6a5278a3..47a8d045e3b 100644
--- a/xml/System.Threading/Thread.xml
+++ b/xml/System.Threading/Thread.xml
@@ -65,10 +65,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -553,10 +549,6 @@ This method is obsolete. On .NET 5 and later versions, calling this method produ
           <AttributeName Language="C#">[System.Obsolete("Thread.Abort is not supported and throws PlatformNotSupportedException.", DiagnosticId="SYSLIB0006", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Thread.Abort is not supported and throws PlatformNotSupportedException.", DiagnosticId="SYSLIB0006", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1158,14 +1150,6 @@ This method is obsolete. On .NET 5 and later versions, calling this method produ
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[get: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1591,10 +1575,6 @@ This method is obsolete. On .NET 5 and later versions, calling this method produ
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[get: System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -2899,14 +2879,6 @@ The value is not guaranteed to be a zero-based processor number.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[set: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -3731,10 +3703,6 @@ The value is not guaranteed to be a zero-based processor number.
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -4264,10 +4232,6 @@ Unlike <xref:System.Threading.Thread.Start(System.Object)>, which captures the c
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("browser")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4702,10 +4666,6 @@ Unlike <xref:System.Threading.Thread.Start(System.Object)>, which captures the c
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="net-9.0">
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
@@ -5549,10 +5509,6 @@ Unlike <xref:System.Threading.Thread.Start(System.Object)>, which captures the c
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="net-9.0">
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
diff --git a/xml/System.Threading/ThreadAbortException.xml b/xml/System.Threading/ThreadAbortException.xml
index 99619238794..74bd3964cf2 100644
--- a/xml/System.Threading/ThreadAbortException.xml
+++ b/xml/System.Threading/ThreadAbortException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Threading/ThreadExceptionEventArgs.xml b/xml/System.Threading/ThreadExceptionEventArgs.xml
index 18deab0f968..03ddafd0276 100644
--- a/xml/System.Threading/ThreadExceptionEventArgs.xml
+++ b/xml/System.Threading/ThreadExceptionEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.Application.ThreadException" /> event.</summary>
diff --git a/xml/System.Threading/ThreadInterruptedException.xml b/xml/System.Threading/ThreadInterruptedException.xml
index 4ad10e34e2e..94575539959 100644
--- a/xml/System.Threading/ThreadInterruptedException.xml
+++ b/xml/System.Threading/ThreadInterruptedException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -239,10 +235,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Threading/ThreadLocal`1.xml b/xml/System.Threading/ThreadLocal`1.xml
index 0ebe2ce8e49..da922d671b3 100644
--- a/xml/System.Threading/ThreadLocal`1.xml
+++ b/xml/System.Threading/ThreadLocal`1.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("IsValueCreated={IsValueCreated}, Value={ValueForDebugDisplay}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("IsValueCreated={IsValueCreated}, Value={ValueForDebugDisplay}")&gt;]</AttributeName>
@@ -548,12 +544,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Threading/ThreadPool.xml b/xml/System.Threading/ThreadPool.xml
index a553412e08a..5f09063fdfa 100644
--- a/xml/System.Threading/ThreadPool.xml
+++ b/xml/System.Threading/ThreadPool.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a pool of threads that can be used to execute tasks, post work items, process asynchronous I/O, wait on behalf of other threads, and process timers.</summary>
@@ -1443,10 +1439,6 @@ If a thread pool implementation may have different types of threads, the count i
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Threading/ThreadPoolBoundHandle.xml b/xml/System.Threading/ThreadPoolBoundHandle.xml
index e35c56f96bd..1d414f6c42b 100644
--- a/xml/System.Threading/ThreadPoolBoundHandle.xml
+++ b/xml/System.Threading/ThreadPoolBoundHandle.xml
@@ -174,10 +174,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -252,10 +248,6 @@ The buffer or buffers specified in `pinData` must be the same as those passed to
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -494,10 +486,6 @@ The buffer or buffers specified in `pinData` must be the same as those passed to
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[get: System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecurityCritical&gt;]</AttributeName>
@@ -537,10 +525,6 @@ The buffer or buffers specified in `pinData` must be the same as those passed to
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.NativeOverlapped*</ReturnType>
diff --git a/xml/System.Threading/ThreadStateException.xml b/xml/System.Threading/ThreadStateException.xml
index 245e824ed16..3f1db5ec67d 100644
--- a/xml/System.Threading/ThreadStateException.xml
+++ b/xml/System.Threading/ThreadStateException.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -259,10 +255,6 @@ In main. Attempting to restart myThread.
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Threading/ThreadingAclExtensions.xml b/xml/System.Threading/ThreadingAclExtensions.xml
index 79f8f0100bd..d966120439d 100644
--- a/xml/System.Threading/ThreadingAclExtensions.xml
+++ b/xml/System.Threading/ThreadingAclExtensions.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-1.0;netcore-1.1">
       <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System.Threading/Timer.xml b/xml/System.Threading/Timer.xml
index b157f48a522..f15b22d97e7 100644
--- a/xml/System.Threading/Timer.xml
+++ b/xml/System.Threading/Timer.xml
@@ -84,10 +84,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a mechanism for executing a method on a thread pool thread at specified intervals. This class cannot be inherited.</summary>
diff --git a/xml/System.Threading/Volatile.xml b/xml/System.Threading/Volatile.xml
index 707d1533536..3b1a498ad87 100644
--- a/xml/System.Threading/Volatile.xml
+++ b/xml/System.Threading/Volatile.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains methods for performing volatile memory operations.</summary>
diff --git a/xml/System.Threading/WaitHandle.xml b/xml/System.Threading/WaitHandle.xml
index dd48f7c25ad..95ff81f9641 100644
--- a/xml/System.Threading/WaitHandle.xml
+++ b/xml/System.Threading/WaitHandle.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System.Threading/WaitHandleCannotBeOpenedException.xml b/xml/System.Threading/WaitHandleCannotBeOpenedException.xml
index a0b2d474c24..ca5b581eef0 100644
--- a/xml/System.Threading/WaitHandleCannotBeOpenedException.xml
+++ b/xml/System.Threading/WaitHandleCannotBeOpenedException.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -237,10 +233,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System.Threading/WaitHandleExtensions.xml b/xml/System.Threading/WaitHandleExtensions.xml
index 0d40f69d8d3..5aa3c72ddc6 100644
--- a/xml/System.Threading/WaitHandleExtensions.xml
+++ b/xml/System.Threading/WaitHandleExtensions.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides convenience methods to for working with a safe handle for a wait handle.</summary>
diff --git a/xml/System.Timers/Timer.xml b/xml/System.Timers/Timer.xml
index fdba25a7271..21b6dc9ea1a 100644
--- a/xml/System.Timers/Timer.xml
+++ b/xml/System.Timers/Timer.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Generates an event after a set interval, with an option to generate recurring events.</summary>
@@ -549,14 +545,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">
           <AttributeName Language="C#">[System.ComponentModel.Category("Behavior")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.Category("Behavior")&gt;]</AttributeName>
diff --git a/xml/System.Timers/TimersDescriptionAttribute.xml b/xml/System.Timers/TimersDescriptionAttribute.xml
index c3237faaaf2..9d1a373fbbb 100644
--- a/xml/System.Timers/TimersDescriptionAttribute.xml
+++ b/xml/System.Timers/TimersDescriptionAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Sets the description that visual designers can display when referencing an event, extender, or property.</summary>
diff --git a/xml/System.Transactions/CommittableTransaction.xml b/xml/System.Transactions/CommittableTransaction.xml
index 056ee5bff52..a09075a0428 100644
--- a/xml/System.Transactions/CommittableTransaction.xml
+++ b/xml/System.Transactions/CommittableTransaction.xml
@@ -252,12 +252,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
       </ReturnValue>
@@ -368,12 +362,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Transactions/IEnlistmentNotification.xml b/xml/System.Transactions/IEnlistmentNotification.xml
index 5980612d52c..d7dc99e44de 100644
--- a/xml/System.Transactions/IEnlistmentNotification.xml
+++ b/xml/System.Transactions/IEnlistmentNotification.xml
@@ -36,12 +36,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Transactions.Local" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Describes an interface that a resource manager should implement to provide two phase commit notification callbacks for the transaction manager upon enlisting for participation.</summary>
     <remarks>
diff --git a/xml/System.Transactions/IPromotableSinglePhaseNotification.xml b/xml/System.Transactions/IPromotableSinglePhaseNotification.xml
index 92cc45a5a37..5feb70148b1 100644
--- a/xml/System.Transactions/IPromotableSinglePhaseNotification.xml
+++ b/xml/System.Transactions/IPromotableSinglePhaseNotification.xml
@@ -40,12 +40,6 @@
       <InterfaceName>System.Transactions.ITransactionPromoter</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Describes an object that acts as a commit delegate for a non-distributed transaction internal to a resource manager.</summary>
     <remarks>
diff --git a/xml/System.Transactions/ISinglePhaseNotification.xml b/xml/System.Transactions/ISinglePhaseNotification.xml
index 16ad81ece78..63c18f8dec9 100644
--- a/xml/System.Transactions/ISinglePhaseNotification.xml
+++ b/xml/System.Transactions/ISinglePhaseNotification.xml
@@ -89,12 +89,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Transactions/ITransactionPromoter.xml b/xml/System.Transactions/ITransactionPromoter.xml
index 3af1c9a7b87..ef72eba4d19 100644
--- a/xml/System.Transactions/ITransactionPromoter.xml
+++ b/xml/System.Transactions/ITransactionPromoter.xml
@@ -36,12 +36,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Transactions.Local" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Describes a delegated transaction for an existing transaction that can be escalated to be managed by the MSDTC when needed.</summary>
     <remarks>
diff --git a/xml/System.Transactions/PreparingEnlistment.xml b/xml/System.Transactions/PreparingEnlistment.xml
index 43e1587b1c3..4deff6bad7f 100644
--- a/xml/System.Transactions/PreparingEnlistment.xml
+++ b/xml/System.Transactions/PreparingEnlistment.xml
@@ -155,12 +155,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -259,12 +253,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Transactions/SinglePhaseEnlistment.xml b/xml/System.Transactions/SinglePhaseEnlistment.xml
index e050ad7f053..3fc55495ee0 100644
--- a/xml/System.Transactions/SinglePhaseEnlistment.xml
+++ b/xml/System.Transactions/SinglePhaseEnlistment.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a set of callbacks that facilitate communication between a participant enlisted for Single Phase Commit and the transaction manager when the <see cref="M:System.Transactions.ISinglePhaseNotification.SinglePhaseCommit(System.Transactions.SinglePhaseEnlistment)" /> notification is received.</summary>
diff --git a/xml/System.Transactions/SubordinateTransaction.xml b/xml/System.Transactions/SubordinateTransaction.xml
index 48863571cc5..4a90097c564 100644
--- a/xml/System.Transactions/SubordinateTransaction.xml
+++ b/xml/System.Transactions/SubordinateTransaction.xml
@@ -88,12 +88,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="isoLevel" Type="System.Transactions.IsolationLevel" />
         <Parameter Name="superior" Type="System.Transactions.ISimpleTransactionSuperior" />
diff --git a/xml/System.Transactions/Transaction.xml b/xml/System.Transactions/Transaction.xml
index b87b20e7ed6..f22579cc6a4 100644
--- a/xml/System.Transactions/Transaction.xml
+++ b/xml/System.Transactions/Transaction.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -159,14 +155,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Transactions.Transaction</ReturnType>
@@ -726,12 +714,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -918,12 +900,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -973,12 +949,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1178,12 +1148,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1331,14 +1295,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Transactions.TransactionCompletedEventHandler</ReturnType>
diff --git a/xml/System.Transactions/TransactionAbortedException.xml b/xml/System.Transactions/TransactionAbortedException.xml
index c0e3ed1808a..cd5ab3f5e1a 100644
--- a/xml/System.Transactions/TransactionAbortedException.xml
+++ b/xml/System.Transactions/TransactionAbortedException.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -191,10 +187,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Transactions/TransactionEventArgs.xml b/xml/System.Transactions/TransactionEventArgs.xml
index d23e9ec7e4b..63ecd31e06c 100644
--- a/xml/System.Transactions/TransactionEventArgs.xml
+++ b/xml/System.Transactions/TransactionEventArgs.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the following transaction events: <see cref="E:System.Transactions.TransactionManager.DistributedTransactionStarted" />, <see cref="E:System.Transactions.Transaction.TransactionCompleted" />.</summary>
diff --git a/xml/System.Transactions/TransactionException.xml b/xml/System.Transactions/TransactionException.xml
index 22b49b1186f..81a35178aa1 100644
--- a/xml/System.Transactions/TransactionException.xml
+++ b/xml/System.Transactions/TransactionException.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -192,10 +188,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Transactions/TransactionInDoubtException.xml b/xml/System.Transactions/TransactionInDoubtException.xml
index 468fd28e85b..6a5042a1aff 100644
--- a/xml/System.Transactions/TransactionInDoubtException.xml
+++ b/xml/System.Transactions/TransactionInDoubtException.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -193,10 +189,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Transactions/TransactionInformation.xml b/xml/System.Transactions/TransactionInformation.xml
index 9182ce5b7da..f5df2e82c1d 100644
--- a/xml/System.Transactions/TransactionInformation.xml
+++ b/xml/System.Transactions/TransactionInformation.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides additional information regarding a transaction.</summary>
diff --git a/xml/System.Transactions/TransactionInterop.xml b/xml/System.Transactions/TransactionInterop.xml
index e190622bce1..8bf3dbe1a33 100644
--- a/xml/System.Transactions/TransactionInterop.xml
+++ b/xml/System.Transactions/TransactionInterop.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Facilitates interaction between <see cref="N:System.Transactions" /> and components that were previously written to interact with MSDTC, COM+, or <see cref="N:System.EnterpriseServices" />. This class cannot be inherited.</summary>
diff --git a/xml/System.Transactions/TransactionManager.xml b/xml/System.Transactions/TransactionManager.xml
index 77e2024fe9d..4c7b1ab06a3 100644
--- a/xml/System.Transactions/TransactionManager.xml
+++ b/xml/System.Transactions/TransactionManager.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains methods used for transaction management. This class cannot be inherited.</summary>
@@ -372,12 +368,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Transactions.Enlistment</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Transactions/TransactionManagerCommunicationException.xml b/xml/System.Transactions/TransactionManagerCommunicationException.xml
index 02adbb6b6a8..0f6d291397b 100644
--- a/xml/System.Transactions/TransactionManagerCommunicationException.xml
+++ b/xml/System.Transactions/TransactionManagerCommunicationException.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -182,10 +178,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Transactions/TransactionOptions.xml b/xml/System.Transactions/TransactionOptions.xml
index 9a2d546536e..62c60693629 100644
--- a/xml/System.Transactions/TransactionOptions.xml
+++ b/xml/System.Transactions/TransactionOptions.xml
@@ -89,12 +89,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Transactions/TransactionPromotionException.xml b/xml/System.Transactions/TransactionPromotionException.xml
index deb4f9ddbc3..30eb9a53d1e 100644
--- a/xml/System.Transactions/TransactionPromotionException.xml
+++ b/xml/System.Transactions/TransactionPromotionException.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -189,10 +185,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
diff --git a/xml/System.Transactions/TransactionScope.xml b/xml/System.Transactions/TransactionScope.xml
index c6d54449e30..108a09379a4 100644
--- a/xml/System.Transactions/TransactionScope.xml
+++ b/xml/System.Transactions/TransactionScope.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Makes a code block transactional. This class cannot be inherited.</summary>
diff --git a/xml/System.Web/HttpUtility.xml b/xml/System.Web/HttpUtility.xml
index 12ac68787d8..112fde80a23 100644
--- a/xml/System.Web/HttpUtility.xml
+++ b/xml/System.Web/HttpUtility.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods for encoding and decoding URLs when processing Web requests. This class cannot be inherited.</summary>
@@ -241,12 +237,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -398,12 +388,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -616,12 +600,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -706,10 +684,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -769,12 +743,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -840,12 +808,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Specialized.NameValueCollection</ReturnType>
       </ReturnValue>
@@ -914,12 +876,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.Specialized.NameValueCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Web/IHtmlString.xml b/xml/System.Web/IHtmlString.xml
index f4ad0f2f480..c5e84150c4a 100644
--- a/xml/System.Web/IHtmlString.xml
+++ b/xml/System.Web/IHtmlString.xml
@@ -16,12 +16,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents an HTML-encoded string that should not be encoded again.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Windows.Forms.ComponentModel.Com2Interop/ICom2PropertyPageDisplayService.xml b/xml/System.Windows.Forms.ComponentModel.Com2Interop/ICom2PropertyPageDisplayService.xml
index cb1ed4f93e0..9842f362ebc 100644
--- a/xml/System.Windows.Forms.ComponentModel.Com2Interop/ICom2PropertyPageDisplayService.xml
+++ b/xml/System.Windows.Forms.ComponentModel.Com2Interop/ICom2PropertyPageDisplayService.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Defines a method that shows the property page for an ActiveX control.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Windows.Forms.ComponentModel.Com2Interop/IComPropertyBrowser.xml b/xml/System.Windows.Forms.ComponentModel.Com2Interop/IComPropertyBrowser.xml
index 788c2f451ae..ce4345184d5 100644
--- a/xml/System.Windows.Forms.ComponentModel.Com2Interop/IComPropertyBrowser.xml
+++ b/xml/System.Windows.Forms.ComponentModel.Com2Interop/IComPropertyBrowser.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Allows Visual Studio to communicate internally with the <see cref="T:System.Windows.Forms.PropertyGrid" /> control.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Windows.Forms.Design.Behavior/Adorner.xml b/xml/System.Windows.Forms.Design.Behavior/Adorner.xml
index 6d303bba2d1..7af7da7543c 100644
--- a/xml/System.Windows.Forms.Design.Behavior/Adorner.xml
+++ b/xml/System.Windows.Forms.Design.Behavior/Adorner.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Manages a collection of user-interface related <see cref="T:System.Windows.Forms.Design.Behavior.Glyph" /> objects. This class cannot be inherited.</summary>
@@ -152,14 +148,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Design.Behavior.BehaviorService</ReturnType>
diff --git a/xml/System.Windows.Forms.Design.Behavior/Behavior.xml b/xml/System.Windows.Forms.Design.Behavior/Behavior.xml
index 206fad4d863..1680f940ff5 100644
--- a/xml/System.Windows.Forms.Design.Behavior/Behavior.xml
+++ b/xml/System.Windows.Forms.Design.Behavior/Behavior.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see cref="T:System.Windows.Forms.Design.Behavior.Behavior" /> objects that are managed by a <see cref="T:System.Windows.Forms.Design.Behavior.BehaviorService" />.</summary>
@@ -203,10 +199,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Cursor</ReturnType>
@@ -295,12 +287,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.MenuCommand</ReturnType>
       </ReturnValue>
@@ -348,12 +334,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -405,12 +385,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -462,12 +436,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -519,12 +487,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -576,12 +538,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -633,12 +589,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1066,12 +1016,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms.Design.Behavior/BehaviorDragDropEventArgs.xml b/xml/System.Windows.Forms.Design.Behavior/BehaviorDragDropEventArgs.xml
index cda4330af8a..7fd5de028f1 100644
--- a/xml/System.Windows.Forms.Design.Behavior/BehaviorDragDropEventArgs.xml
+++ b/xml/System.Windows.Forms.Design.Behavior/BehaviorDragDropEventArgs.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.Design.Behavior.BehaviorService.BeginDrag" /> and <see cref="E:System.Windows.Forms.Design.Behavior.BehaviorService.EndDrag" /> events.</summary>
diff --git a/xml/System.Windows.Forms.Design.Behavior/BehaviorService.xml b/xml/System.Windows.Forms.Design.Behavior/BehaviorService.xml
index be76103accd..0ea576e89d4 100644
--- a/xml/System.Windows.Forms.Design.Behavior/BehaviorService.xml
+++ b/xml/System.Windows.Forms.Design.Behavior/BehaviorService.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Manages user interface in the designer. This class cannot be inherited.</summary>
@@ -271,14 +267,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Design.Behavior.BehaviorDragDropEventHandler</ReturnType>
@@ -425,10 +413,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Design.Behavior.Behavior</ReturnType>
@@ -511,14 +495,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Design.Behavior.BehaviorDragDropEventHandler</ReturnType>
@@ -968,14 +944,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms.Design.Behavior/BehaviorServiceAdornerCollection.xml b/xml/System.Windows.Forms.Design.Behavior/BehaviorServiceAdornerCollection.xml
index c2f8ccf6e8a..2dba6ff0240 100644
--- a/xml/System.Windows.Forms.Design.Behavior/BehaviorServiceAdornerCollection.xml
+++ b/xml/System.Windows.Forms.Design.Behavior/BehaviorServiceAdornerCollection.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Stores <see cref="T:System.Windows.Forms.Design.Behavior.Adorner" /> objects in a strongly typed collection.</summary>
@@ -115,10 +111,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="behaviorService" Type="System.Windows.Forms.Design.Behavior.BehaviorService" />
diff --git a/xml/System.Windows.Forms.Design.Behavior/BehaviorServiceAdornerCollectionEnumerator.xml b/xml/System.Windows.Forms.Design.Behavior/BehaviorServiceAdornerCollectionEnumerator.xml
index 8a36247f8b7..75c0b578c90 100644
--- a/xml/System.Windows.Forms.Design.Behavior/BehaviorServiceAdornerCollectionEnumerator.xml
+++ b/xml/System.Windows.Forms.Design.Behavior/BehaviorServiceAdornerCollectionEnumerator.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="mappings" Type="System.Windows.Forms.Design.Behavior.BehaviorServiceAdornerCollection" />
       </Parameters>
diff --git a/xml/System.Windows.Forms.Design.Behavior/ComponentGlyph.xml b/xml/System.Windows.Forms.Design.Behavior/ComponentGlyph.xml
index d21aa9508e9..da00178b787 100644
--- a/xml/System.Windows.Forms.Design.Behavior/ComponentGlyph.xml
+++ b/xml/System.Windows.Forms.Design.Behavior/ComponentGlyph.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Associates a <see cref="T:System.Windows.Forms.Design.Behavior.Glyph" /> with its component.</summary>
@@ -205,12 +201,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms.Design.Behavior/ControlBodyGlyph.xml b/xml/System.Windows.Forms.Design.Behavior/ControlBodyGlyph.xml
index 2c0d2c2bdbe..4f8b5b13013 100644
--- a/xml/System.Windows.Forms.Design.Behavior/ControlBodyGlyph.xml
+++ b/xml/System.Windows.Forms.Design.Behavior/ControlBodyGlyph.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Associates a <see cref="T:System.Windows.Forms.Design.Behavior.Glyph" /> with its control.</summary>
diff --git a/xml/System.Windows.Forms.Design.Behavior/Glyph.xml b/xml/System.Windows.Forms.Design.Behavior/Glyph.xml
index 0eef6209cfa..027d3b176d3 100644
--- a/xml/System.Windows.Forms.Design.Behavior/Glyph.xml
+++ b/xml/System.Windows.Forms.Design.Behavior/Glyph.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a single user interface (UI) entity managed by an <see cref="T:System.Windows.Forms.Design.Behavior.Adorner" />.</summary>
@@ -295,12 +291,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms.Design.Behavior/GlyphCollection.xml b/xml/System.Windows.Forms.Design.Behavior/GlyphCollection.xml
index 336a8b823b5..1c0e5a8f9e6 100644
--- a/xml/System.Windows.Forms.Design.Behavior/GlyphCollection.xml
+++ b/xml/System.Windows.Forms.Design.Behavior/GlyphCollection.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Stores <see cref="T:System.Windows.Forms.Design.Behavior.Glyph" /> objects in a strongly typed collection.</summary>
diff --git a/xml/System.Windows.Forms.Design.Behavior/SnapLine.xml b/xml/System.Windows.Forms.Design.Behavior/SnapLine.xml
index ba3c0348f5d..24ba0ae609d 100644
--- a/xml/System.Windows.Forms.Design.Behavior/SnapLine.xml
+++ b/xml/System.Windows.Forms.Design.Behavior/SnapLine.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the horizontal and vertical line segments that are dynamically created in the user interface (UI) to assist in the design-time layout of controls in a container. This class cannot be inherited.</summary>
@@ -176,10 +172,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="type" Type="System.Windows.Forms.Design.Behavior.SnapLineType" />
@@ -283,10 +275,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="type" Type="System.Windows.Forms.Design.Behavior.SnapLineType" />
@@ -389,10 +377,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms.Design/AnchorEditor.xml b/xml/System.Windows.Forms.Design/AnchorEditor.xml
index 40bb8e0e45f..ae67fb94a15 100644
--- a/xml/System.Windows.Forms.Design/AnchorEditor.xml
+++ b/xml/System.Windows.Forms.Design/AnchorEditor.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a user interface for configuring an <see cref="P:System.Windows.Forms.Control.Anchor" /> property.</summary>
diff --git a/xml/System.Windows.Forms.Design/AxImporter+Options.xml b/xml/System.Windows.Forms.Design/AxImporter+Options.xml
index d1bed84de86..d6a5466941c 100644
--- a/xml/System.Windows.Forms.Design/AxImporter+Options.xml
+++ b/xml/System.Windows.Forms.Design/AxImporter+Options.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a set of options for an <see cref="T:System.Windows.Forms.Design.AxImporter" />.</summary>
diff --git a/xml/System.Windows.Forms.Design/AxImporter.xml b/xml/System.Windows.Forms.Design/AxImporter.xml
index 41bf19810e1..385ef45e34b 100644
--- a/xml/System.Windows.Forms.Design/AxImporter.xml
+++ b/xml/System.Windows.Forms.Design/AxImporter.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Imports ActiveX controls and generates a wrapper that can be accessed by a designer.</summary>
diff --git a/xml/System.Windows.Forms.Design/BorderSidesEditor.xml b/xml/System.Windows.Forms.Design/BorderSidesEditor.xml
index 4fa8a483688..f120bb964a8 100644
--- a/xml/System.Windows.Forms.Design/BorderSidesEditor.xml
+++ b/xml/System.Windows.Forms.Design/BorderSidesEditor.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an editor for setting the <see cref="P:System.Windows.Forms.ToolStripStatusLabel.BorderSides" /> property.</summary>
diff --git a/xml/System.Windows.Forms.Design/ComponentEditorForm.xml b/xml/System.Windows.Forms.Design/ComponentEditorForm.xml
index 542530ed119..a8e1e44f4b0 100644
--- a/xml/System.Windows.Forms.Design/ComponentEditorForm.xml
+++ b/xml/System.Windows.Forms.Design/ComponentEditorForm.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a user interface for a <see cref="T:System.Windows.Forms.Design.WindowsFormsComponentEditor" />.</summary>
@@ -163,14 +159,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -461,10 +449,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DialogResult</ReturnType>
@@ -500,12 +484,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DialogResult</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms.Design/ComponentEditorPage.xml b/xml/System.Windows.Forms.Design/ComponentEditorPage.xml
index 7b952220712..d732b59c295 100644
--- a/xml/System.Windows.Forms.Design/ComponentEditorPage.xml
+++ b/xml/System.Windows.Forms.Design/ComponentEditorPage.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a base implementation for a <see cref="T:System.Windows.Forms.Design.ComponentEditorPage" />.</summary>
@@ -331,10 +327,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.CreateParams</ReturnType>
@@ -506,12 +498,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Control</ReturnType>
       </ReturnValue>
@@ -580,14 +566,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Icon</ReturnType>
@@ -1140,10 +1118,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms.Design/ControlDesigner+ControlDesignerAccessibleObject.xml b/xml/System.Windows.Forms.Design/ControlDesigner+ControlDesignerAccessibleObject.xml
index ce43233854e..0df7243b5c0 100644
--- a/xml/System.Windows.Forms.Design/ControlDesigner+ControlDesignerAccessibleObject.xml
+++ b/xml/System.Windows.Forms.Design/ControlDesigner+ControlDesignerAccessibleObject.xml
@@ -41,14 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an <see cref="T:System.Windows.Forms.AccessibleObject" /> for <see cref="T:System.Windows.Forms.Design.ControlDesigner" />.</summary>
@@ -83,10 +75,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="designer" Type="System.Windows.Forms.Design.ControlDesigner" Index="0" FrameworkAlternate="windowsdesktop-9.0" />
@@ -160,10 +148,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -210,10 +194,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -248,12 +228,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -324,12 +298,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -364,12 +332,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -404,12 +366,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -453,10 +409,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -496,10 +448,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
@@ -603,10 +551,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms.Design/ControlDesigner.xml b/xml/System.Windows.Forms.Design/ControlDesigner.xml
index 17e725f159d..b2b88270cf7 100644
--- a/xml/System.Windows.Forms.Design/ControlDesigner.xml
+++ b/xml/System.Windows.Forms.Design/ControlDesigner.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Extends the design mode behavior of a <see cref="T:System.Windows.Forms.Control" />.</summary>
@@ -340,10 +336,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Design.Behavior.BehaviorService</ReturnType>
@@ -887,10 +879,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.InheritanceAttribute</ReturnType>
@@ -968,12 +956,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1017,12 +999,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1090,12 +1066,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Design.ControlDesigner</ReturnType>
       </ReturnValue>
@@ -1847,10 +1817,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.IComponent</ReturnType>
diff --git a/xml/System.Windows.Forms.Design/DockEditor.xml b/xml/System.Windows.Forms.Design/DockEditor.xml
index 55562c33538..40eafe3dae6 100644
--- a/xml/System.Windows.Forms.Design/DockEditor.xml
+++ b/xml/System.Windows.Forms.Design/DockEditor.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a user interface for specifying a <see cref="P:System.Windows.Forms.Control.Dock" /> property.</summary>
diff --git a/xml/System.Windows.Forms.Design/EventHandlerService.xml b/xml/System.Windows.Forms.Design/EventHandlerService.xml
index 496f92522fe..4daa5a68f76 100644
--- a/xml/System.Windows.Forms.Design/EventHandlerService.xml
+++ b/xml/System.Windows.Forms.Design/EventHandlerService.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a systematic way to manage event handlers for the current document.</summary>
@@ -198,12 +194,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -247,12 +237,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -295,12 +279,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms.Design/EventsTab.xml b/xml/System.Windows.Forms.Design/EventsTab.xml
index e552ddca34b..3663b5fe5cc 100644
--- a/xml/System.Windows.Forms.Design/EventsTab.xml
+++ b/xml/System.Windows.Forms.Design/EventsTab.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a <see cref="T:System.Windows.Forms.Design.PropertyTab" /> that can display events for selection and linking.</summary>
@@ -70,10 +66,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="sp" Type="System.IServiceProvider" />
@@ -104,12 +96,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms.Design/FileNameEditor.xml b/xml/System.Windows.Forms.Design/FileNameEditor.xml
index 45446eb5bb5..0996f51c7b9 100644
--- a/xml/System.Windows.Forms.Design/FileNameEditor.xml
+++ b/xml/System.Windows.Forms.Design/FileNameEditor.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a user interface for selecting a file name.</summary>
@@ -248,12 +244,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms.Design/FolderNameEditor+FolderBrowser.xml b/xml/System.Windows.Forms.Design/FolderNameEditor+FolderBrowser.xml
index da1b186208b..9b0247e3d70 100644
--- a/xml/System.Windows.Forms.Design/FolderNameEditor+FolderBrowser.xml
+++ b/xml/System.Windows.Forms.Design/FolderNameEditor+FolderBrowser.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a dialog box that allows the user to choose a folder. This class cannot be inherited.</summary>
@@ -252,12 +248,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DialogResult</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms.Design/FolderNameEditor.xml b/xml/System.Windows.Forms.Design/FolderNameEditor.xml
index 2bc77d5b5ad..0b9f41eb065 100644
--- a/xml/System.Windows.Forms.Design/FolderNameEditor.xml
+++ b/xml/System.Windows.Forms.Design/FolderNameEditor.xml
@@ -122,12 +122,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -179,12 +173,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Design.UITypeEditorEditStyle</ReturnType>
       </ReturnValue>
@@ -233,12 +221,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms.Design/IContainsThemedScrollbarWindows.xml b/xml/System.Windows.Forms.Design/IContainsThemedScrollbarWindows.xml
index c53260c3403..69907ea29d0 100644
--- a/xml/System.Windows.Forms.Design/IContainsThemedScrollbarWindows.xml
+++ b/xml/System.Windows.Forms.Design/IContainsThemedScrollbarWindows.xml
@@ -28,12 +28,6 @@
     <TypeForwarding From="System.Design" FromVersion="9.0.0.0" To="System.Windows.Forms.Design" ToVersion="9.0.0.0" FrameworkAlternate="windowsdesktop-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Defines a method for getting information about how the scrollbars of windows need to be themed when displayed in the Visual Studio designer.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Windows.Forms.Design/IUIService.xml b/xml/System.Windows.Forms.Design/IUIService.xml
index 09bc07983e7..624a4764f6e 100644
--- a/xml/System.Windows.Forms.Design/IUIService.xml
+++ b/xml/System.Windows.Forms.Design/IUIService.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.Guid("06A9C74B-5E32-4561-BE73-381B37869F4F")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.Guid("06A9C74B-5E32-4561-BE73-381B37869F4F")&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Enables interaction with the user interface of the development environment object that is hosting the designer.</summary>
diff --git a/xml/System.Windows.Forms.Design/IWindowsFormsEditorService.xml b/xml/System.Windows.Forms.Design/IWindowsFormsEditorService.xml
index 501364ec308..ae66c3268f5 100644
--- a/xml/System.Windows.Forms.Design/IWindowsFormsEditorService.xml
+++ b/xml/System.Windows.Forms.Design/IWindowsFormsEditorService.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an interface for a <see cref="T:System.Drawing.Design.UITypeEditor" /> to display Windows Forms or to display a control in a drop-down area from a property grid control in design mode.</summary>
     <remarks>
@@ -108,12 +102,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms.Design/ImageListCodeDomSerializer.xml b/xml/System.Windows.Forms.Design/ImageListCodeDomSerializer.xml
index 27c688bc341..550bee441bb 100644
--- a/xml/System.Windows.Forms.Design/ImageListCodeDomSerializer.xml
+++ b/xml/System.Windows.Forms.Design/ImageListCodeDomSerializer.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Serializes string dictionaries.</summary>
diff --git a/xml/System.Windows.Forms.Design/ImageListImageEditor.xml b/xml/System.Windows.Forms.Design/ImageListImageEditor.xml
index 99782815801..45808d3ddc2 100644
--- a/xml/System.Windows.Forms.Design/ImageListImageEditor.xml
+++ b/xml/System.Windows.Forms.Design/ImageListImageEditor.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an editor that can perform default file searching for bitmap (.bmp) files.</summary>
@@ -120,12 +116,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -260,12 +250,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms.Design/MaskDescriptor.xml b/xml/System.Windows.Forms.Design/MaskDescriptor.xml
index 2902ad36af4..ce496063660 100644
--- a/xml/System.Windows.Forms.Design/MaskDescriptor.xml
+++ b/xml/System.Windows.Forms.Design/MaskDescriptor.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines a set of members for derived classes to provide options for the masked text box UI type editor.</summary>
@@ -124,10 +120,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Globalization.CultureInfo</ReturnType>
@@ -330,12 +322,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -531,12 +517,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms.Design/MenuCommands.xml b/xml/System.Windows.Forms.Design/MenuCommands.xml
index 34448ae7b32..2b428b52753 100644
--- a/xml/System.Windows.Forms.Design/MenuCommands.xml
+++ b/xml/System.Windows.Forms.Design/MenuCommands.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines a set of <see cref="T:System.ComponentModel.Design.CommandID" /> fields that each correspond to a command function provided by the host environment.</summary>
diff --git a/xml/System.Windows.Forms.Design/PropertyTab.xml b/xml/System.Windows.Forms.Design/PropertyTab.xml
index 8bd2aa4756c..7c0364c7d58 100644
--- a/xml/System.Windows.Forms.Design/PropertyTab.xml
+++ b/xml/System.Windows.Forms.Design/PropertyTab.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a base class for property tabs.</summary>
@@ -140,12 +136,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -345,12 +335,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptor</ReturnType>
       </ReturnValue>
@@ -398,10 +382,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
@@ -437,12 +417,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms.Design/ShortcutKeysEditor.xml b/xml/System.Windows.Forms.Design/ShortcutKeysEditor.xml
index 1c7c099ee5c..6e667e2841c 100644
--- a/xml/System.Windows.Forms.Design/ShortcutKeysEditor.xml
+++ b/xml/System.Windows.Forms.Design/ShortcutKeysEditor.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an editor for picking shortcut keys.</summary>
diff --git a/xml/System.Windows.Forms.Design/ToolStripItemDesignerAvailabilityAttribute.xml b/xml/System.Windows.Forms.Design/ToolStripItemDesignerAvailabilityAttribute.xml
index ed0db9e9eef..eff901b3d84 100644
--- a/xml/System.Windows.Forms.Design/ToolStripItemDesignerAvailabilityAttribute.xml
+++ b/xml/System.Windows.Forms.Design/ToolStripItemDesignerAvailabilityAttribute.xml
@@ -153,12 +153,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms.Design/WindowsFormsComponentEditor.xml b/xml/System.Windows.Forms.Design/WindowsFormsComponentEditor.xml
index 1efd583c3c5..d9d772c9798 100644
--- a/xml/System.Windows.Forms.Design/WindowsFormsComponentEditor.xml
+++ b/xml/System.Windows.Forms.Design/WindowsFormsComponentEditor.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a base class for editors that use a modal dialog to display a properties page similar to an ActiveX control's property page.</summary>
@@ -203,12 +199,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms.Layout/ArrangedElementCollection.xml b/xml/System.Windows.Forms.Layout/ArrangedElementCollection.xml
index 7414e42591c..b1e64610545 100644
--- a/xml/System.Windows.Forms.Layout/ArrangedElementCollection.xml
+++ b/xml/System.Windows.Forms.Layout/ArrangedElementCollection.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of objects.</summary>
@@ -184,12 +180,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -417,12 +407,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -502,12 +486,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -551,12 +529,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -599,12 +571,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -691,14 +657,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -742,12 +700,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms.Layout/LayoutEngine.xml b/xml/System.Windows.Forms.Layout/LayoutEngine.xml
index c2c22f5eaf2..c83162fbe2d 100644
--- a/xml/System.Windows.Forms.Layout/LayoutEngine.xml
+++ b/xml/System.Windows.Forms.Layout/LayoutEngine.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the base class for implementing layout engines.</summary>
diff --git a/xml/System.Windows.Forms.Layout/TableLayoutSettingsTypeConverter.xml b/xml/System.Windows.Forms.Layout/TableLayoutSettingsTypeConverter.xml
index 14aef09b6ee..3ae26c51427 100644
--- a/xml/System.Windows.Forms.Layout/TableLayoutSettingsTypeConverter.xml
+++ b/xml/System.Windows.Forms.Layout/TableLayoutSettingsTypeConverter.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a unified way of converting types of values to other types, as well as for accessing standard values and subproperties.</summary>
@@ -124,12 +120,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -165,12 +155,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -214,12 +198,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms.PropertyGridInternal/IRootGridEntry.xml b/xml/System.Windows.Forms.PropertyGridInternal/IRootGridEntry.xml
index dd0ca1e5c55..7a60c0cf410 100644
--- a/xml/System.Windows.Forms.PropertyGridInternal/IRootGridEntry.xml
+++ b/xml/System.Windows.Forms.PropertyGridInternal/IRootGridEntry.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Defines methods and a property that allow filtering on specific attributes.</summary>
     <remarks>
diff --git a/xml/System.Windows.Forms.PropertyGridInternal/PropertiesTab.xml b/xml/System.Windows.Forms.PropertyGridInternal/PropertiesTab.xml
index 3f9dbf347f4..7cd09b6e4f7 100644
--- a/xml/System.Windows.Forms.PropertyGridInternal/PropertiesTab.xml
+++ b/xml/System.Windows.Forms.PropertyGridInternal/PropertiesTab.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the **Properties** tab on a <see cref="T:System.Windows.Forms.PropertyGrid" /> control.</summary>
@@ -171,12 +167,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms.PropertyGridInternal/PropertyGridCommands.xml b/xml/System.Windows.Forms.PropertyGridInternal/PropertyGridCommands.xml
index 28406c4754e..55e5a4fc802 100644
--- a/xml/System.Windows.Forms.PropertyGridInternal/PropertyGridCommands.xml
+++ b/xml/System.Windows.Forms.PropertyGridInternal/PropertyGridCommands.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains a set of menu commands used by the designer in Visual Studio.</summary>
diff --git a/xml/System.Windows.Forms.VisualStyles/VisualStyleElement.xml b/xml/System.Windows.Forms.VisualStyles/VisualStyleElement.xml
index 9aa7b06164b..f2638f891bb 100644
--- a/xml/System.Windows.Forms.VisualStyles/VisualStyleElement.xml
+++ b/xml/System.Windows.Forms.VisualStyles/VisualStyleElement.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Identifies a control or user interface (UI) element that is drawn with visual styles.</summary>
diff --git a/xml/System.Windows.Forms.VisualStyles/VisualStyleInformation.xml b/xml/System.Windows.Forms.VisualStyles/VisualStyleInformation.xml
index d36e36364cd..667bff3874b 100644
--- a/xml/System.Windows.Forms.VisualStyles/VisualStyleInformation.xml
+++ b/xml/System.Windows.Forms.VisualStyles/VisualStyleInformation.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about the current visual style of the operating system.</summary>
diff --git a/xml/System.Windows.Forms.VisualStyles/VisualStyleRenderer.xml b/xml/System.Windows.Forms.VisualStyles/VisualStyleRenderer.xml
index 21897de26ac..14a79db2121 100644
--- a/xml/System.Windows.Forms.VisualStyles/VisualStyleRenderer.xml
+++ b/xml/System.Windows.Forms.VisualStyles/VisualStyleRenderer.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods for drawing and getting information about a <see cref="T:System.Windows.Forms.VisualStyles.VisualStyleElement" />. This class cannot be inherited.</summary>
diff --git a/xml/System.Windows.Forms/AccessibleObject.xml b/xml/System.Windows.Forms/AccessibleObject.xml
index c3ef0f7b141..ae40152a103 100644
--- a/xml/System.Windows.Forms/AccessibleObject.xml
+++ b/xml/System.Windows.Forms/AccessibleObject.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information that accessibility applications use to adjust an application's user interface (UI) for users with impairments.</summary>
@@ -181,12 +177,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -233,10 +223,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -285,12 +271,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -342,12 +322,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -398,12 +372,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -461,10 +429,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -504,12 +468,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -569,10 +527,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -683,10 +637,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -742,10 +692,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -835,12 +781,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -935,12 +875,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -985,12 +919,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1037,12 +965,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -1082,10 +1004,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1129,12 +1047,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -1186,10 +1098,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1245,14 +1153,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1316,12 +1216,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -1382,10 +1276,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
@@ -1439,12 +1329,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1711,10 +1595,6 @@ This method must be overridden in derived classes that support the UI automation
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicFields | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicFields)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicFields | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicFields)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.FieldInfo</ReturnType>
@@ -1766,10 +1646,6 @@ This method must be overridden in derived classes that support the UI automation
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicFields | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicFields)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicFields | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicFields)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.FieldInfo[]</ReturnType>
@@ -1820,10 +1696,6 @@ This method must be overridden in derived classes that support the UI automation
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicEvents | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicFields | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicNestedTypes | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicEvents | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicFields | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicNestedTypes | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicEvents | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicFields | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicNestedTypes | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicEvents | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicFields | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicNestedTypes | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MemberInfo[]</ReturnType>
@@ -1874,10 +1746,6 @@ This method must be overridden in derived classes that support the UI automation
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicEvents | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicFields | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicNestedTypes | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicEvents | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicFields | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicNestedTypes | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicEvents | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicFields | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicNestedTypes | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicEvents | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicFields | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicNestedTypes | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MemberInfo[]</ReturnType>
@@ -1927,10 +1795,6 @@ This method must be overridden in derived classes that support the UI automation
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
@@ -1983,10 +1847,6 @@ This method must be overridden in derived classes that support the UI automation
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
@@ -2060,10 +1920,6 @@ This method must be overridden in derived classes that support the UI automation
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo[]</ReturnType>
@@ -2112,10 +1968,6 @@ This method must be overridden in derived classes that support the UI automation
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.PropertyInfo[]</ReturnType>
@@ -2165,10 +2017,6 @@ This method must be overridden in derived classes that support the UI automation
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.PropertyInfo</ReturnType>
@@ -2221,10 +2069,6 @@ This method must be overridden in derived classes that support the UI automation
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.PropertyInfo</ReturnType>
@@ -2298,10 +2142,6 @@ This method must be overridden in derived classes that support the UI automation
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -2405,10 +2245,6 @@ More than one argument is specified for a field set operation.</exception>
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -2559,14 +2395,6 @@ More than one argument is specified for a field set operation.</exception>
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/AmbientProperties.xml b/xml/System.Windows.Forms/AmbientProperties.xml
index dd3907c95e4..d52fe9ca3c4 100644
--- a/xml/System.Windows.Forms/AmbientProperties.xml
+++ b/xml/System.Windows.Forms/AmbientProperties.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides ambient property values to top-level controls.</summary>
diff --git a/xml/System.Windows.Forms/Application+MessageLoopCallback.xml b/xml/System.Windows.Forms/Application+MessageLoopCallback.xml
index 25dbfccad0a..bd4d07f5d5d 100644
--- a/xml/System.Windows.Forms/Application+MessageLoopCallback.xml
+++ b/xml/System.Windows.Forms/Application+MessageLoopCallback.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters />
   <ReturnValue>
diff --git a/xml/System.Windows.Forms/Application.xml b/xml/System.Windows.Forms/Application.xml
index c01053e7df2..8f4cc10048a 100644
--- a/xml/System.Windows.Forms/Application.xml
+++ b/xml/System.Windows.Forms/Application.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides <see langword="static" /> methods and properties to manage an application, such as methods to start and stop an application, to process Windows messages, and properties to get information about an application. This class cannot be inherited.</summary>
@@ -90,12 +86,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -190,14 +180,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -362,10 +344,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -614,14 +592,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -781,10 +751,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -924,14 +890,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1016,14 +974,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1288,10 +1238,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1438,10 +1384,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -2281,14 +2223,6 @@ The high DPI mode is set once per process. For more information about setting th
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.ThreadExceptionEventHandler</ReturnType>
@@ -2352,14 +2286,6 @@ The high DPI mode is set once per process. For more information about setting th
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/ApplicationContext.xml b/xml/System.Windows.Forms/ApplicationContext.xml
index dbed52f9ebb..f382eb9a9c8 100644
--- a/xml/System.Windows.Forms/ApplicationContext.xml
+++ b/xml/System.Windows.Forms/ApplicationContext.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the contextual information about an application thread.</summary>
@@ -438,10 +434,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Windows.Forms/AutoCompleteStringCollection.xml b/xml/System.Windows.Forms/AutoCompleteStringCollection.xml
index 9e4127696f8..fc788e46b64 100644
--- a/xml/System.Windows.Forms/AutoCompleteStringCollection.xml
+++ b/xml/System.Windows.Forms/AutoCompleteStringCollection.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains a collection of strings to use for the auto-complete feature on certain Windows Forms controls.</summary>
@@ -192,14 +188,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.CollectionChangeEventHandler</ReturnType>
@@ -681,12 +669,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -729,12 +711,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -778,12 +754,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -826,12 +796,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -960,14 +924,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1011,12 +967,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/AxHost+AboutBoxDelegate.xml b/xml/System.Windows.Forms/AxHost+AboutBoxDelegate.xml
index de9e10f8dd7..b6887b62d98 100644
--- a/xml/System.Windows.Forms/AxHost+AboutBoxDelegate.xml
+++ b/xml/System.Windows.Forms/AxHost+AboutBoxDelegate.xml
@@ -18,12 +18,6 @@
   <Base>
     <BaseTypeName>System.Delegate</BaseTypeName>
   </Base>
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Parameters />
   <ReturnValue>
     <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Windows.Forms/AxHost+ActiveXInvokeKind.xml b/xml/System.Windows.Forms/AxHost+ActiveXInvokeKind.xml
index 36a730362dc..e25d857f134 100644
--- a/xml/System.Windows.Forms/AxHost+ActiveXInvokeKind.xml
+++ b/xml/System.Windows.Forms/AxHost+ActiveXInvokeKind.xml
@@ -19,12 +19,6 @@
   <Base>
     <BaseTypeName>System.Enum</BaseTypeName>
   </Base>
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Specifies the type of member that referenced the ActiveX control while it was in an invalid state.</summary>
     <remarks>
diff --git a/xml/System.Windows.Forms/AxHost+AxComponentEditor.xml b/xml/System.Windows.Forms/AxHost+AxComponentEditor.xml
index ab590f5035f..3a9e2e5202b 100644
--- a/xml/System.Windows.Forms/AxHost+AxComponentEditor.xml
+++ b/xml/System.Windows.Forms/AxHost+AxComponentEditor.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an editor that uses a modal dialog box to display a property page for an ActiveX control.</summary>
@@ -85,12 +81,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/AxHost+ClsidAttribute.xml b/xml/System.Windows.Forms/AxHost+ClsidAttribute.xml
index b0c111e841f..b0d6d21f05e 100644
--- a/xml/System.Windows.Forms/AxHost+ClsidAttribute.xml
+++ b/xml/System.Windows.Forms/AxHost+ClsidAttribute.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the CLSID of an ActiveX control hosted by an <see cref="T:System.Windows.Forms.AxHost" /> control.</summary>
diff --git a/xml/System.Windows.Forms/AxHost+ConnectionPointCookie.xml b/xml/System.Windows.Forms/AxHost+ConnectionPointCookie.xml
index 4ee77f346d2..3137107723e 100644
--- a/xml/System.Windows.Forms/AxHost+ConnectionPointCookie.xml
+++ b/xml/System.Windows.Forms/AxHost+ConnectionPointCookie.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Connects an ActiveX control to a client that handles the control's events.</summary>
@@ -67,10 +63,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="source" Type="System.Object" />
diff --git a/xml/System.Windows.Forms/AxHost+InvalidActiveXStateException.xml b/xml/System.Windows.Forms/AxHost+InvalidActiveXStateException.xml
index 1757649cd65..1ef548637fa 100644
--- a/xml/System.Windows.Forms/AxHost+InvalidActiveXStateException.xml
+++ b/xml/System.Windows.Forms/AxHost+InvalidActiveXStateException.xml
@@ -134,12 +134,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/AxHost+State.xml b/xml/System.Windows.Forms/AxHost+State.xml
index 7c9f51e6e2a..3f03d8f42c1 100644
--- a/xml/System.Windows.Forms/AxHost+State.xml
+++ b/xml/System.Windows.Forms/AxHost+State.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates the persisted state of an ActiveX control.</summary>
diff --git a/xml/System.Windows.Forms/AxHost+StateConverter.xml b/xml/System.Windows.Forms/AxHost+StateConverter.xml
index 2f889791776..4cbf0202aff 100644
--- a/xml/System.Windows.Forms/AxHost+StateConverter.xml
+++ b/xml/System.Windows.Forms/AxHost+StateConverter.xml
@@ -90,12 +90,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/AxHost+TypeLibraryTimeStampAttribute.xml b/xml/System.Windows.Forms/AxHost+TypeLibraryTimeStampAttribute.xml
index 1a6d05cd527..be45735fd3b 100644
--- a/xml/System.Windows.Forms/AxHost+TypeLibraryTimeStampAttribute.xml
+++ b/xml/System.Windows.Forms/AxHost+TypeLibraryTimeStampAttribute.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Assembly, Inherited=false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Assembly, Inherited=false)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies a date and time associated with the type library of an ActiveX control hosted by an <see cref="T:System.Windows.Forms.AxHost" /> control.</summary>
@@ -54,12 +50,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="timestamp" Type="System.String" />
       </Parameters>
diff --git a/xml/System.Windows.Forms/AxHost.xml b/xml/System.Windows.Forms/AxHost.xml
index fa5f298483b..5f77f3553bb 100644
--- a/xml/System.Windows.Forms/AxHost.xml
+++ b/xml/System.Windows.Forms/AxHost.xml
@@ -64,10 +64,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Wraps ActiveX controls and exposes them as fully featured Windows Forms controls.</summary>
@@ -168,10 +164,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="clsid" Type="System.String" />
@@ -201,12 +193,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="clsid" Type="System.String" />
         <Parameter Name="flags" Type="System.Int32" />
@@ -900,10 +886,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.CreateParams</ReturnType>
@@ -988,14 +970,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Cursor</ReturnType>
@@ -1471,10 +1445,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1694,14 +1664,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -1908,10 +1870,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -1954,10 +1912,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -2000,10 +1954,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -2046,10 +1996,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -2092,10 +2038,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -2135,10 +2077,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -2178,10 +2116,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -2271,10 +2205,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -2355,10 +2285,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Image</ReturnType>
@@ -2405,10 +2331,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Image</ReturnType>
@@ -3553,12 +3475,6 @@ The **About** dialog box typically displays version and copyright information ab
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3591,12 +3507,6 @@ The **About** dialog box typically displays version and copyright information ab
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3629,12 +3539,6 @@ The **About** dialog box typically displays version and copyright information ab
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3667,16 +3571,6 @@ The **About** dialog box typically displays version and copyright information ab
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3749,10 +3643,6 @@ The **About** dialog box typically displays version and copyright information ab
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4162,14 +4052,6 @@ The **About** dialog box typically displays version and copyright information ab
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4308,14 +4190,6 @@ The **About** dialog box typically displays version and copyright information ab
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4454,14 +4328,6 @@ The **About** dialog box typically displays version and copyright information ab
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4587,12 +4453,6 @@ The **About** dialog box typically displays version and copyright information ab
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4798,12 +4658,6 @@ For an example, see <xref:System.Windows.Forms.AxHost>.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4928,14 +4782,6 @@ For an example, see <xref:System.Windows.Forms.AxHost>.
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.AttributeCollection</ReturnType>
@@ -4983,10 +4829,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -5033,10 +4875,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -5087,10 +4925,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Generic TypeConverters may require the generic types to be annotated. For example, NullableConverter requires the underlying type to be DynamicallyAccessedMembers All.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Generic TypeConverters may require the generic types to be annotated. For example, NullableConverter requires the underlying type to be DynamicallyAccessedMembers All.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.TypeConverter</ReturnType>
@@ -5141,10 +4975,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The built-in EventDescriptor implementation uses Reflection which requires unreferenced code.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The built-in EventDescriptor implementation uses Reflection which requires unreferenced code.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.EventDescriptor</ReturnType>
@@ -5188,10 +5018,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("PropertyDescriptor's PropertyType cannot be statically discovered.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("PropertyDescriptor's PropertyType cannot be statically discovered.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptor</ReturnType>
@@ -5235,14 +5061,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Editors registered in TypeDescriptor.AddEditorTable may be trimmed.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Editors registered in TypeDescriptor.AddEditorTable may be trimmed.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -5293,14 +5111,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.EventDescriptorCollection</ReturnType>
@@ -5352,14 +5162,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.EventDescriptorCollection</ReturnType>
@@ -5425,14 +5227,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("PropertyDescriptor's PropertyType cannot be statically discovered.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("PropertyDescriptor's PropertyType cannot be statically discovered.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
@@ -5488,14 +5282,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("PropertyDescriptor's PropertyType cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("PropertyDescriptor's PropertyType cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
@@ -5545,10 +5331,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -5663,14 +5445,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/BaseCollection.xml b/xml/System.Windows.Forms/BaseCollection.xml
index 2a9276d7e4b..a88018d03f2 100644
--- a/xml/System.Windows.Forms/BaseCollection.xml
+++ b/xml/System.Windows.Forms/BaseCollection.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the base functionality for creating data-related collections in the <see cref="N:System.Windows.Forms" /> namespace.</summary>
@@ -319,10 +315,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.ArrayList</ReturnType>
diff --git a/xml/System.Windows.Forms/BindableComponent.xml b/xml/System.Windows.Forms/BindableComponent.xml
index 7939b4ddd65..77394c4d8fa 100644
--- a/xml/System.Windows.Forms/BindableComponent.xml
+++ b/xml/System.Windows.Forms/BindableComponent.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Base class for components that provide properties that can be data bound with the Windows Forms Designer.</summary>
@@ -97,14 +93,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.BindingContext</ReturnType>
diff --git a/xml/System.Windows.Forms/Binding.xml b/xml/System.Windows.Forms/Binding.xml
index b60ecd7b2a0..2a4702eccab 100644
--- a/xml/System.Windows.Forms/Binding.xml
+++ b/xml/System.Windows.Forms/Binding.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the simple binding between the property value of an object and the property value of a control.</summary>
@@ -1206,14 +1202,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1396,12 +1384,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1445,12 +1427,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1497,12 +1473,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1620,10 +1590,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/BindingCompleteEventArgs.xml b/xml/System.Windows.Forms/BindingCompleteEventArgs.xml
index 2727de5f20b..915b42629e7 100644
--- a/xml/System.Windows.Forms/BindingCompleteEventArgs.xml
+++ b/xml/System.Windows.Forms/BindingCompleteEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.Binding.BindingComplete" /> event.</summary>
@@ -411,10 +407,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/BindingContext.xml b/xml/System.Windows.Forms/BindingContext.xml
index f2309a169be..60e06ac59ae 100644
--- a/xml/System.Windows.Forms/BindingContext.xml
+++ b/xml/System.Windows.Forms/BindingContext.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Manages the collection of <see cref="T:System.Windows.Forms.BindingManagerBase" /> objects for any object that inherits from the <see cref="T:System.Windows.Forms.Control" /> class.</summary>
@@ -393,14 +389,6 @@ This method is obsolete and unused.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.CollectionChangeEventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/BindingManagerBase.xml b/xml/System.Windows.Forms/BindingManagerBase.xml
index 236a8c0205b..ab5c78a8b85 100644
--- a/xml/System.Windows.Forms/BindingManagerBase.xml
+++ b/xml/System.Windows.Forms/BindingManagerBase.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Manages all <see cref="T:System.Windows.Forms.Binding" /> objects that are bound to the same data source and data member. This class is abstract.</summary>
@@ -370,10 +366,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Windows.Forms/BindingManagerDataErrorEventArgs.xml b/xml/System.Windows.Forms/BindingManagerDataErrorEventArgs.xml
index 228c60f62b1..37680367ec3 100644
--- a/xml/System.Windows.Forms/BindingManagerDataErrorEventArgs.xml
+++ b/xml/System.Windows.Forms/BindingManagerDataErrorEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.BindingManagerBase.DataError" /> event.</summary>
diff --git a/xml/System.Windows.Forms/BindingMemberInfo.xml b/xml/System.Windows.Forms/BindingMemberInfo.xml
index c9804e09bd6..2af8e75f16f 100644
--- a/xml/System.Windows.Forms/BindingMemberInfo.xml
+++ b/xml/System.Windows.Forms/BindingMemberInfo.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains information that enables a <see cref="T:System.Windows.Forms.Binding" /> to resolve a data binding to either the property of an object or the property of the current object in a list of objects.</summary>
@@ -90,12 +86,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="dataMember" Type="System.String" />
       </Parameters>
@@ -276,12 +266,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/BindingNavigator.xml b/xml/System.Windows.Forms/BindingNavigator.xml
index 5ecb2145529..9804c4e1abf 100644
--- a/xml/System.Windows.Forms/BindingNavigator.xml
+++ b/xml/System.Windows.Forms/BindingNavigator.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the navigation and manipulation user interface (UI) for controls on a form that are bound to data.</summary>
@@ -211,10 +207,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="container" Type="System.ComponentModel.IContainer" />
@@ -545,14 +537,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/BindingSource.xml b/xml/System.Windows.Forms/BindingSource.xml
index bd0f697fd33..2004f670ce2 100644
--- a/xml/System.Windows.Forms/BindingSource.xml
+++ b/xml/System.Windows.Forms/BindingSource.xml
@@ -79,10 +79,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates the data source for a form.</summary>
@@ -200,12 +196,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="container" Type="System.ComponentModel.IContainer" />
       </Parameters>
@@ -241,12 +231,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="dataSource" Type="System.Object">
           <Attributes>
@@ -641,10 +625,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -692,10 +672,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -926,12 +902,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1279,14 +1249,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1659,12 +1621,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1722,12 +1678,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1784,12 +1734,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IEnumerator</ReturnType>
       </ReturnValue>
@@ -1822,12 +1766,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
       </ReturnValue>
@@ -1871,12 +1809,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -2330,10 +2262,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IList</ReturnType>
@@ -2639,12 +2567,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2690,12 +2612,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2738,12 +2654,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2791,12 +2701,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2842,12 +2746,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2890,12 +2788,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2943,12 +2835,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2994,12 +2880,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3045,12 +2925,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3799,10 +3673,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.ListSortDescriptionCollection</ReturnType>
@@ -4210,10 +4080,6 @@ The <xref:System.ComponentModel.ListSortDescriptionCollection> is a read-only co
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -4245,12 +4111,6 @@ The <xref:System.ComponentModel.ListSortDescriptionCollection> is a read-only co
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4292,12 +4152,6 @@ The <xref:System.ComponentModel.ListSortDescriptionCollection> is a read-only co
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4500,14 +4354,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/BindingsCollection.xml b/xml/System.Windows.Forms/BindingsCollection.xml
index 8b3e04a963e..1af1be7ff39 100644
--- a/xml/System.Windows.Forms/BindingsCollection.xml
+++ b/xml/System.Windows.Forms/BindingsCollection.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Windows.Forms.Binding" /> objects for a control.</summary>
@@ -214,14 +210,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.CollectionChangeEventHandler</ReturnType>
@@ -272,14 +260,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.CollectionChangeEventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/Button.xml b/xml/System.Windows.Forms/Button.xml
index 5a9805070a5..880276a60fd 100644
--- a/xml/System.Windows.Forms/Button.xml
+++ b/xml/System.Windows.Forms/Button.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Windows button control.</summary>
@@ -320,14 +316,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -388,14 +376,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.MouseEventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/ButtonBase+ButtonBaseAccessibleObject.xml b/xml/System.Windows.Forms/ButtonBase+ButtonBaseAccessibleObject.xml
index aed9004936e..05cfd5e25a8 100644
--- a/xml/System.Windows.Forms/ButtonBase+ButtonBaseAccessibleObject.xml
+++ b/xml/System.Windows.Forms/ButtonBase+ButtonBaseAccessibleObject.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information that accessibility applications use to adjust an application's user interface for users with disabilities.</summary>
@@ -63,10 +59,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="owner" Type="System.Windows.Forms.Control" />
diff --git a/xml/System.Windows.Forms/ButtonBase.xml b/xml/System.Windows.Forms/ButtonBase.xml
index 0371ce642ba..f96c4c75c3b 100644
--- a/xml/System.Windows.Forms/ButtonBase.xml
+++ b/xml/System.Windows.Forms/ButtonBase.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Implements the basic functionality common to button controls.</summary>
@@ -217,14 +213,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -313,14 +301,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Input.ICommand</ReturnType>
@@ -358,14 +338,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -402,14 +374,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -458,14 +422,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -503,14 +459,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -865,14 +813,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Image</ReturnType>
@@ -1143,14 +1083,6 @@ If you set the <xref:System.Windows.Forms.ButtonBase.ImageKey%2A> property, the
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ImageList</ReturnType>
@@ -1262,14 +1194,6 @@ If you set the <xref:System.Windows.Forms.ButtonBase.ImageKey%2A> property, the
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/ButtonRenderer.xml b/xml/System.Windows.Forms/ButtonRenderer.xml
index fe9449e2ac2..8af5f50ef4b 100644
--- a/xml/System.Windows.Forms/ButtonRenderer.xml
+++ b/xml/System.Windows.Forms/ButtonRenderer.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods used to render a button control with or without visual styles. This class cannot be inherited.</summary>
@@ -231,10 +227,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -302,12 +294,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/CheckBox.xml b/xml/System.Windows.Forms/CheckBox.xml
index 5d2ac7781e5..710c3bc3e25 100644
--- a/xml/System.Windows.Forms/CheckBox.xml
+++ b/xml/System.Windows.Forms/CheckBox.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Windows <see cref="T:System.Windows.Forms.CheckBox" />.</summary>
@@ -223,14 +219,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -467,14 +455,6 @@ Note: If the <see cref="P:System.Windows.Forms.CheckBox.ThreeState" /> property
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -600,14 +580,6 @@ Note: If the <see cref="P:System.Windows.Forms.CheckBox.ThreeState" /> property
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -777,14 +749,6 @@ Note: If the <see cref="P:System.Windows.Forms.CheckBox.ThreeState" /> property
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -835,14 +799,6 @@ Note: If the <see cref="P:System.Windows.Forms.CheckBox.ThreeState" /> property
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.MouseEventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/CheckBoxRenderer.xml b/xml/System.Windows.Forms/CheckBoxRenderer.xml
index 277a83e036d..8489ada2197 100644
--- a/xml/System.Windows.Forms/CheckBoxRenderer.xml
+++ b/xml/System.Windows.Forms/CheckBoxRenderer.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods used to render a check box control with or without visual styles. This class cannot be inherited.</summary>
@@ -137,10 +133,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -201,12 +193,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/CheckedListBox+CheckedIndexCollection.xml b/xml/System.Windows.Forms/CheckedListBox+CheckedIndexCollection.xml
index 6d60b3960e5..436c8c9062e 100644
--- a/xml/System.Windows.Forms/CheckedListBox+CheckedIndexCollection.xml
+++ b/xml/System.Windows.Forms/CheckedListBox+CheckedIndexCollection.xml
@@ -463,12 +463,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -553,12 +547,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -603,12 +591,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -645,12 +627,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -738,14 +714,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -790,12 +758,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/CheckedListBox+CheckedItemCollection.xml b/xml/System.Windows.Forms/CheckedListBox+CheckedItemCollection.xml
index bcd94628b52..98b75ce0a0c 100644
--- a/xml/System.Windows.Forms/CheckedListBox+CheckedItemCollection.xml
+++ b/xml/System.Windows.Forms/CheckedListBox+CheckedItemCollection.xml
@@ -104,12 +104,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -268,12 +262,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -362,14 +350,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -491,12 +471,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -578,12 +552,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -666,12 +634,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/CheckedListBox.xml b/xml/System.Windows.Forms/CheckedListBox.xml
index e90a8b27997..49d659cfeee 100644
--- a/xml/System.Windows.Forms/CheckedListBox.xml
+++ b/xml/System.Windows.Forms/CheckedListBox.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Displays a <see cref="T:System.Windows.Forms.ListBox" /> in which a check box is displayed to the left of each item.</summary>
@@ -374,14 +370,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -563,14 +551,6 @@ The <xref:System.Windows.Forms.Control.CreateParams%2A> property should not be o
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -614,14 +594,6 @@ The <xref:System.Windows.Forms.Control.CreateParams%2A> property should not be o
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -722,14 +694,6 @@ The <xref:System.Windows.Forms.Control.CreateParams%2A> property should not be o
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -772,14 +736,6 @@ The <xref:System.Windows.Forms.Control.CreateParams%2A> property should not be o
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DrawItemEventHandler</ReturnType>
@@ -976,14 +932,6 @@ The <xref:System.Windows.Forms.Control.CreateParams%2A> property should not be o
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ItemCheckEventHandler</ReturnType>
@@ -1168,14 +1116,6 @@ The <xref:System.Windows.Forms.Control.CreateParams%2A> property should not be o
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.MeasureItemEventHandler</ReturnType>
@@ -1228,14 +1168,6 @@ The <xref:System.Windows.Forms.Control.CreateParams%2A> property should not be o
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.MouseEventHandler</ReturnType>
@@ -2062,14 +1994,6 @@ The <xref:System.Windows.Forms.Control.CreateParams%2A> property should not be o
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/Clipboard.xml b/xml/System.Windows.Forms/Clipboard.xml
index 9bc9ed71564..0bbbfd08387 100644
--- a/xml/System.Windows.Forms/Clipboard.xml
+++ b/xml/System.Windows.Forms/Clipboard.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods to place data on and retrieve data from the system Clipboard. This class cannot be inherited.</summary>
@@ -199,12 +195,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -496,12 +486,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Stream</ReturnType>
       </ReturnValue>
@@ -620,12 +604,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.IDataObject</ReturnType>
       </ReturnValue>
@@ -744,12 +722,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Image</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ColorDialog.xml b/xml/System.Windows.Forms/ColorDialog.xml
index ebfe522c100..39409f7b09e 100644
--- a/xml/System.Windows.Forms/ColorDialog.xml
+++ b/xml/System.Windows.Forms/ColorDialog.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a common dialog box that displays available colors along with controls that enable the user to define custom colors.</summary>
diff --git a/xml/System.Windows.Forms/ColumnHeader.xml b/xml/System.Windows.Forms/ColumnHeader.xml
index ef815951011..f490a96ddcd 100644
--- a/xml/System.Windows.Forms/ColumnHeader.xml
+++ b/xml/System.Windows.Forms/ColumnHeader.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Displays a single column header in a <see cref="T:System.Windows.Forms.ListView" /> control.</summary>
@@ -168,12 +164,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="imageKey" Type="System.String" Index="0" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0" />
       </Parameters>
@@ -243,12 +233,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -464,14 +448,6 @@ For example, consider a button control whose <xref:System.Windows.Forms.ImageLis
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -737,14 +713,6 @@ If you set the <xref:System.Windows.Forms.ColumnHeader.ImageKey%2A> property, th
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -844,12 +812,6 @@ If you set the <xref:System.Windows.Forms.ColumnHeader.ImageKey%2A> property, th
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ColumnHeaderConverter.xml b/xml/System.Windows.Forms/ColumnHeaderConverter.xml
index 7e3c4de2727..46b8bfe0f74 100644
--- a/xml/System.Windows.Forms/ColumnHeaderConverter.xml
+++ b/xml/System.Windows.Forms/ColumnHeaderConverter.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.Windows.Forms.ColumnHeader" /> objects from one type to another.</summary>
diff --git a/xml/System.Windows.Forms/ColumnReorderedEventArgs.xml b/xml/System.Windows.Forms/ColumnReorderedEventArgs.xml
index 76c86f8cb18..e9610b9b6f4 100644
--- a/xml/System.Windows.Forms/ColumnReorderedEventArgs.xml
+++ b/xml/System.Windows.Forms/ColumnReorderedEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.ListView.ColumnReordered" /> event.</summary>
diff --git a/xml/System.Windows.Forms/ComboBox+ChildAccessibleObject.xml b/xml/System.Windows.Forms/ComboBox+ChildAccessibleObject.xml
index 0af7ca728db..f717d45a947 100644
--- a/xml/System.Windows.Forms/ComboBox+ChildAccessibleObject.xml
+++ b/xml/System.Windows.Forms/ComboBox+ChildAccessibleObject.xml
@@ -112,10 +112,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/ComboBox+ObjectCollection.xml b/xml/System.Windows.Forms/ComboBox+ObjectCollection.xml
index af0f59845d7..ad3cba9ea94 100644
--- a/xml/System.Windows.Forms/ComboBox+ObjectCollection.xml
+++ b/xml/System.Windows.Forms/ComboBox+ObjectCollection.xml
@@ -268,12 +268,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -438,12 +432,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -489,12 +477,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -591,14 +573,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -649,12 +623,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -745,12 +713,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -931,10 +893,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
diff --git a/xml/System.Windows.Forms/ComboBox.xml b/xml/System.Windows.Forms/ComboBox.xml
index cee1f53a122..e6d3a49c334 100644
--- a/xml/System.Windows.Forms/ComboBox.xml
+++ b/xml/System.Windows.Forms/ComboBox.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Windows combo box control.</summary>
@@ -445,14 +441,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Image</ReturnType>
@@ -503,14 +491,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -604,14 +584,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -801,14 +773,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -941,14 +905,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -990,14 +946,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DrawItemEventHandler</ReturnType>
@@ -1103,14 +1051,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1161,14 +1101,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1328,14 +1260,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1527,10 +1451,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
@@ -1581,12 +1501,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1648,10 +1562,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
@@ -1707,10 +1617,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
@@ -2265,14 +2171,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.MeasureItemEventHandler</ReturnType>
@@ -3609,14 +3507,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -3666,14 +3556,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.PaintEventHandler</ReturnType>
@@ -4105,14 +3987,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -4177,14 +4051,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -4290,14 +4156,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -4653,14 +4511,6 @@ Reading the <xref:System.Windows.Forms.ComboBox.Text%2A> property returns the te
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/ComboBoxRenderer.xml b/xml/System.Windows.Forms/ComboBoxRenderer.xml
index 894d435b9c1..c8409302767 100644
--- a/xml/System.Windows.Forms/ComboBoxRenderer.xml
+++ b/xml/System.Windows.Forms/ComboBoxRenderer.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods used to render a combo box control with visual styles. This class cannot be inherited.</summary>
@@ -202,10 +198,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -274,10 +266,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -352,12 +340,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -422,12 +404,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/CommonDialog.xml b/xml/System.Windows.Forms/CommonDialog.xml
index a8304f9d603..b396c8ff431 100644
--- a/xml/System.Windows.Forms/CommonDialog.xml
+++ b/xml/System.Windows.Forms/CommonDialog.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the base class used for displaying dialog boxes on the screen.</summary>
@@ -206,12 +202,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ContainerControl.xml b/xml/System.Windows.Forms/ContainerControl.xml
index 00a67619c7a..1f0f3b4caa2 100644
--- a/xml/System.Windows.Forms/ContainerControl.xml
+++ b/xml/System.Windows.Forms/ContainerControl.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides focus-management functionality for controls that can function as a container for other controls.</summary>
@@ -145,14 +141,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Control</ReturnType>
@@ -479,14 +467,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -539,14 +519,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.BindingContext</ReturnType>
@@ -989,10 +961,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Form</ReturnType>
diff --git a/xml/System.Windows.Forms/ContextMenuStrip.xml b/xml/System.Windows.Forms/ContextMenuStrip.xml
index 4d70eb590c6..adfb6a15ce2 100644
--- a/xml/System.Windows.Forms/ContextMenuStrip.xml
+++ b/xml/System.Windows.Forms/ContextMenuStrip.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a shortcut menu.</summary>
@@ -316,10 +312,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Control</ReturnType>
diff --git a/xml/System.Windows.Forms/Control+ControlAccessibleObject.xml b/xml/System.Windows.Forms/Control+ControlAccessibleObject.xml
index 0741d2c3d38..10a5e5499a9 100644
--- a/xml/System.Windows.Forms/Control+ControlAccessibleObject.xml
+++ b/xml/System.Windows.Forms/Control+ControlAccessibleObject.xml
@@ -80,12 +80,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="ownerControl" Type="System.Windows.Forms.Control" />
       </Parameters>
@@ -634,12 +628,6 @@ For this method to be effective, the control must implement the <xref:System.Win
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/Control+ControlCollection.xml b/xml/System.Windows.Forms/Control+ControlCollection.xml
index 6955d3528da..f83baf3408f 100644
--- a/xml/System.Windows.Forms/Control+ControlCollection.xml
+++ b/xml/System.Windows.Forms/Control+ControlCollection.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Windows.Forms.Control" /> objects.</summary>
@@ -134,12 +130,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -331,12 +321,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -387,12 +371,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -719,12 +697,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -764,12 +736,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -893,10 +859,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Control</ReturnType>
@@ -971,12 +933,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1087,12 +1043,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1189,12 +1139,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1348,12 +1292,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/Control.xml b/xml/System.Windows.Forms/Control.xml
index 89f0c9a77c8..4efbd8adf63 100644
--- a/xml/System.Windows.Forms/Control.xml
+++ b/xml/System.Windows.Forms/Control.xml
@@ -100,10 +100,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the base class for controls, which are components with visual representation.</summary>
@@ -531,10 +527,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
@@ -1440,10 +1432,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
@@ -1486,10 +1474,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
@@ -1565,10 +1549,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.IAsyncResult</ReturnType>
@@ -2718,10 +2698,6 @@ The following table lists Windows Forms controls and which event (<xref:System.W
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -3215,10 +3191,6 @@ The following table lists Windows Forms controls and which event (<xref:System.W
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Control+ControlCollection</ReturnType>
@@ -3279,10 +3251,6 @@ The following table lists Windows Forms controls and which event (<xref:System.W
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
@@ -3390,10 +3358,6 @@ The following table lists Windows Forms controls and which event (<xref:System.W
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Control+ControlCollection</ReturnType>
@@ -3482,12 +3446,6 @@ The following table lists Windows Forms controls and which event (<xref:System.W
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Graphics</ReturnType>
       </ReturnValue>
@@ -3598,10 +3556,6 @@ The following table lists Windows Forms controls and which event (<xref:System.W
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.CreateParams</ReturnType>
@@ -3669,14 +3623,6 @@ The following table lists Windows Forms controls and which event (<xref:System.W
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Cursor</ReturnType>
@@ -3798,10 +3744,6 @@ The following table lists Windows Forms controls and which event (<xref:System.W
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ControlBindingsCollection</ReturnType>
@@ -3967,10 +3909,6 @@ The following table lists Windows Forms controls and which event (<xref:System.W
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Cursor</ReturnType>
@@ -4012,10 +3950,6 @@ The following table lists Windows Forms controls and which event (<xref:System.W
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -4782,12 +4716,6 @@ The following table lists Windows Forms controls and which event (<xref:System.W
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DragDropEffects</ReturnType>
       </ReturnValue>
@@ -4891,12 +4819,6 @@ The following table lists Windows Forms controls and which event (<xref:System.W
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DragDropEffects</ReturnType>
       </ReturnValue>
@@ -5635,12 +5557,6 @@ Point clientPoint = targetControl.PointToClient(new Point(de.X, de.Y));
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5814,10 +5730,6 @@ Point clientPoint = targetControl.PointToClient(new Point(de.X, de.Y));
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -6159,14 +6071,6 @@ Point clientPoint = targetControl.PointToClient(new Point(de.X, de.Y));
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -7626,14 +7530,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -8081,12 +7977,6 @@ MyControl.Font = New Font(MyControl.Font, _
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -8123,10 +8013,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -8195,12 +8081,6 @@ MyControl.Font = New Font(MyControl.Font, _
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -8275,12 +8155,6 @@ MyControl.Font = New Font(MyControl.Font, _
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
@@ -8316,12 +8190,6 @@ MyControl.Font = New Font(MyControl.Font, _
         <AssemblyName>System.Windows.Forms</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -8357,12 +8225,6 @@ MyControl.Font = New Font(MyControl.Font, _
         <AssemblyName>System.Windows.Forms</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -8399,12 +8261,6 @@ MyControl.Font = New Font(MyControl.Font, _
         <AssemblyName>System.Windows.Forms</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -8460,12 +8316,6 @@ MyControl.Font = New Font(MyControl.Font, _
         <AssemblyName>System.Windows.Forms</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -8529,10 +8379,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -8582,10 +8428,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -8635,10 +8477,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -8685,10 +8523,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -8730,10 +8564,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -9568,10 +9398,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Layout.LayoutEngine</ReturnType>
@@ -11014,14 +10840,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -11104,12 +10922,6 @@ MyControl.Font = New Font(MyControl.Font, _
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -11158,10 +10970,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -11224,10 +11032,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -11289,10 +11093,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -11344,10 +11144,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -11399,10 +11195,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -11465,10 +11257,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -11520,10 +11308,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -11588,10 +11372,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -11697,10 +11477,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -11750,10 +11526,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -11815,10 +11587,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -11927,10 +11695,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -11988,10 +11752,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -12029,10 +11789,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -12095,10 +11851,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -12160,10 +11912,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -12203,10 +11951,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -12244,10 +11988,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -12298,10 +12038,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -12352,10 +12088,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -12406,10 +12138,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -12460,10 +12188,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -12519,10 +12243,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -12582,10 +12302,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -12647,10 +12363,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -12712,10 +12424,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -12766,10 +12474,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -12820,10 +12524,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -12883,10 +12583,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -12947,10 +12643,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -12996,12 +12688,6 @@ MyControl.Font = New Font(MyControl.Font, _
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -13063,10 +12749,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -13117,10 +12799,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -13180,10 +12858,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -13243,10 +12917,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -13306,10 +12976,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -13364,10 +13030,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -13427,10 +13089,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -13493,10 +13151,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -13541,12 +13195,6 @@ MyControl.Font = New Font(MyControl.Font, _
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -13594,10 +13242,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -13646,10 +13290,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -13698,10 +13338,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -13751,10 +13387,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -13806,10 +13438,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -13861,10 +13489,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -13925,10 +13549,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -13980,10 +13600,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -14044,10 +13660,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -14099,10 +13711,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -14154,10 +13762,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -14258,12 +13862,6 @@ MyControl.Font = New Font(MyControl.Font, _
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -14312,10 +13910,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -14379,10 +13973,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -14431,10 +14021,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -14500,10 +14086,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -14565,10 +14147,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -14630,10 +14208,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -14694,10 +14268,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -14742,10 +14312,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -14783,10 +14349,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -14848,10 +14410,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -14913,10 +14471,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -14978,10 +14532,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -15043,10 +14593,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -15107,10 +14653,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -15159,10 +14701,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -15209,10 +14747,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -15267,10 +14801,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -15320,10 +14850,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -15374,10 +14900,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -15439,10 +14961,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -15493,10 +15011,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -15550,10 +15064,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -15604,10 +15114,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -15658,10 +15164,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -15723,10 +15225,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -15786,10 +15284,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -15840,10 +15334,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -15894,10 +15384,6 @@ MyControl.Font = New Font(MyControl.Font, _
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -16983,10 +16469,6 @@ if (CanSelect && IsMnemonic(charCode, MyControl.Text) {
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -17057,10 +16539,6 @@ if (CanSelect && IsMnemonic(charCode, MyControl.Text) {
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -17267,10 +16745,6 @@ if (CanSelect && IsMnemonic(charCode, MyControl.Text) {
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -17313,10 +16787,6 @@ if (CanSelect && IsMnemonic(charCode, MyControl.Text) {
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -17359,10 +16829,6 @@ if (CanSelect && IsMnemonic(charCode, MyControl.Text) {
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -17405,10 +16871,6 @@ if (CanSelect && IsMnemonic(charCode, MyControl.Text) {
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -19182,12 +18644,6 @@ if (CanSelect && IsMnemonic(charCode, MyControl.Text) {
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -20511,10 +19967,6 @@ The following code example selects the specified <xref:System.Windows.Forms.Cont
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -20554,10 +20006,6 @@ The following code example selects the specified <xref:System.Windows.Forms.Cont
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -20597,10 +20045,6 @@ The following code example selects the specified <xref:System.Windows.Forms.Cont
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -20640,10 +20084,6 @@ The following code example selects the specified <xref:System.Windows.Forms.Cont
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -21024,14 +20464,6 @@ Note: This property will always return <see langword="true" /> for an instance o
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -21969,14 +21401,6 @@ If you set `Visible` to `true`:
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.IWindowTarget</ReturnType>
diff --git a/xml/System.Windows.Forms/ControlBindingsCollection.xml b/xml/System.Windows.Forms/ControlBindingsCollection.xml
index 161ec38c2b3..b0e4f6fae1c 100644
--- a/xml/System.Windows.Forms/ControlBindingsCollection.xml
+++ b/xml/System.Windows.Forms/ControlBindingsCollection.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the collection of data bindings for a control.</summary>
@@ -770,10 +766,6 @@ The <paramref name="dataMember" /> doesn't specify a valid member of the <paramr
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Control</ReturnType>
diff --git a/xml/System.Windows.Forms/ControlEventArgs.xml b/xml/System.Windows.Forms/ControlEventArgs.xml
index f662c3b0a5d..3e2be7f8962 100644
--- a/xml/System.Windows.Forms/ControlEventArgs.xml
+++ b/xml/System.Windows.Forms/ControlEventArgs.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.Control.ControlAdded" /> and <see cref="E:System.Windows.Forms.Control.ControlRemoved" /> events.</summary>
diff --git a/xml/System.Windows.Forms/ControlPaint.xml b/xml/System.Windows.Forms/ControlPaint.xml
index 63435bdc474..c5904831365 100644
--- a/xml/System.Windows.Forms/ControlPaint.xml
+++ b/xml/System.Windows.Forms/ControlPaint.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods used to paint common Windows controls and their elements. This class cannot be inherited.</summary>
diff --git a/xml/System.Windows.Forms/ConvertEventArgs.xml b/xml/System.Windows.Forms/ConvertEventArgs.xml
index eda60041206..9c15a866dcb 100644
--- a/xml/System.Windows.Forms/ConvertEventArgs.xml
+++ b/xml/System.Windows.Forms/ConvertEventArgs.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.Binding.Format" /> and <see cref="E:System.Windows.Forms.Binding.Parse" /> events.</summary>
diff --git a/xml/System.Windows.Forms/CreateParams.xml b/xml/System.Windows.Forms/CreateParams.xml
index bc60b91f745..88c5b227e49 100644
--- a/xml/System.Windows.Forms/CreateParams.xml
+++ b/xml/System.Windows.Forms/CreateParams.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates the information needed when creating a control.</summary>
@@ -490,12 +486,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/CurrencyManager.xml b/xml/System.Windows.Forms/CurrencyManager.xml
index 03f45dd3285..87673ff1bfa 100644
--- a/xml/System.Windows.Forms/CurrencyManager.xml
+++ b/xml/System.Windows.Forms/CurrencyManager.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Manages a list of <see cref="T:System.Windows.Forms.Binding" /> objects.</summary>
@@ -382,12 +378,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
       </ReturnValue>
@@ -437,12 +427,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -553,10 +537,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IList</ReturnType>
@@ -750,12 +730,6 @@ private void PrintCurrentListName(DataGrid myDataGrid){
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -787,12 +761,6 @@ private void PrintCurrentListName(DataGrid myDataGrid){
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -825,12 +793,6 @@ private void PrintCurrentListName(DataGrid myDataGrid){
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -875,12 +837,6 @@ private void PrintCurrentListName(DataGrid myDataGrid){
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -924,12 +880,6 @@ private void PrintCurrentListName(DataGrid myDataGrid){
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/Cursor.xml b/xml/System.Windows.Forms/Cursor.xml
index 3a2d582619b..6c0e77348b5 100644
--- a/xml/System.Windows.Forms/Cursor.xml
+++ b/xml/System.Windows.Forms/Cursor.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the image used to paint the mouse pointer.</summary>
@@ -181,12 +177,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="stream" Type="System.IO.Stream" />
       </Parameters>
@@ -235,12 +225,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="fileName" Type="System.String" />
       </Parameters>
@@ -288,12 +272,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="type" Type="System.Type" />
         <Parameter Name="resource" Type="System.String" />
@@ -531,12 +509,6 @@ vbc /resource:"MyWaitCursor.cur","MyCursors.MyWaitCursor.cur" MyCursor.vb
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -587,12 +559,6 @@ vbc /resource:"MyWaitCursor.cur","MyCursors.MyWaitCursor.cur" MyCursor.vb
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1100,12 +1066,6 @@ vbc /resource:"MyWaitCursor.cur","MyCursors.MyWaitCursor.cur" MyCursor.vb
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1193,12 +1153,6 @@ vbc /resource:"MyWaitCursor.cur","MyCursors.MyWaitCursor.cur" MyCursor.vb
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/CursorConverter.xml b/xml/System.Windows.Forms/CursorConverter.xml
index bd514944e52..a67596bb3a9 100644
--- a/xml/System.Windows.Forms/CursorConverter.xml
+++ b/xml/System.Windows.Forms/CursorConverter.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.Windows.Forms.Cursor" /> objects to and from various other representations.</summary>
@@ -97,12 +93,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -285,12 +275,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.TypeConverter+StandardValuesCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/Cursors.xml b/xml/System.Windows.Forms/Cursors.xml
index 9a3cb25b7cb..ae1b2166aae 100644
--- a/xml/System.Windows.Forms/Cursors.xml
+++ b/xml/System.Windows.Forms/Cursors.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a collection of <see cref="T:System.Windows.Forms.Cursor" /> objects for use by a Windows Forms application.</summary>
diff --git a/xml/System.Windows.Forms/DataFormats.xml b/xml/System.Windows.Forms/DataFormats.xml
index b07e59bff5b..05c2826d092 100644
--- a/xml/System.Windows.Forms/DataFormats.xml
+++ b/xml/System.Windows.Forms/DataFormats.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides <see langword="static" />, predefined <see cref="T:System.Windows.Forms.Clipboard" /> format names. Use them to identify the format of data that you store in an <see cref="T:System.Windows.Forms.IDataObject" />.</summary>
diff --git a/xml/System.Windows.Forms/DataGridView+DataGridViewAccessibleObject.xml b/xml/System.Windows.Forms/DataGridView+DataGridViewAccessibleObject.xml
index 3c9cb4f0b12..94da23154b7 100644
--- a/xml/System.Windows.Forms/DataGridView+DataGridViewAccessibleObject.xml
+++ b/xml/System.Windows.Forms/DataGridView+DataGridViewAccessibleObject.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about the <see cref="T:System.Windows.Forms.DataGridView" /> control to accessibility client applications.</summary>
@@ -87,10 +83,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="owner" Type="System.Windows.Forms.DataGridView" />
@@ -237,10 +229,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridView+DataGridViewControlCollection.xml b/xml/System.Windows.Forms/DataGridView+DataGridViewControlCollection.xml
index 2c41c425d07..e804ae0786b 100644
--- a/xml/System.Windows.Forms/DataGridView+DataGridViewControlCollection.xml
+++ b/xml/System.Windows.Forms/DataGridView+DataGridViewControlCollection.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of controls contained on a <see cref="T:System.Windows.Forms.DataGridView" />.</summary>
@@ -221,12 +217,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridView+DataGridViewTopRowAccessibleObject.xml b/xml/System.Windows.Forms/DataGridView+DataGridViewTopRowAccessibleObject.xml
index 74687b81d6a..f85a892e491 100644
--- a/xml/System.Windows.Forms/DataGridView+DataGridViewTopRowAccessibleObject.xml
+++ b/xml/System.Windows.Forms/DataGridView+DataGridViewTopRowAccessibleObject.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about a row of <see cref="T:System.Windows.Forms.DataGridViewColumnHeaderCell" /> objects to accessibility client applications.</summary>
@@ -201,12 +197,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -322,12 +312,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -389,14 +373,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridView</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridView+HitTestInfo.xml b/xml/System.Windows.Forms/DataGridView+HitTestInfo.xml
index 5958460e7c6..45bfd6884c4 100644
--- a/xml/System.Windows.Forms/DataGridView+HitTestInfo.xml
+++ b/xml/System.Windows.Forms/DataGridView+HitTestInfo.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains information, such as the row and column indexes, about a specific coordinate pair in the <see cref="T:System.Windows.Forms.DataGridView" /> control. This class cannot be inherited.</summary>
@@ -151,12 +147,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridView.xml b/xml/System.Windows.Forms/DataGridView.xml
index f3fdf803d49..98821185458 100644
--- a/xml/System.Windows.Forms/DataGridView.xml
+++ b/xml/System.Windows.Forms/DataGridView.xml
@@ -64,10 +64,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Displays data in a customizable grid.</summary>
@@ -563,14 +559,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -668,14 +656,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -776,14 +756,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -886,14 +858,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -998,14 +962,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1102,14 +1058,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1288,14 +1236,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -2612,14 +2552,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewAutoSizeColumnModeEventHandler</ReturnType>
@@ -2741,14 +2673,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewAutoSizeColumnsModeEventHandler</ReturnType>
@@ -2867,14 +2791,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewAutoSizeModeEventHandler</ReturnType>
@@ -2981,14 +2897,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -3079,14 +2987,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -3144,14 +3044,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Image</ReturnType>
@@ -3202,14 +3094,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -3304,14 +3188,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -3478,14 +3354,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -3581,14 +3449,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.QuestionEventHandler</ReturnType>
@@ -3668,14 +3528,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellCancelEventHandler</ReturnType>
@@ -3779,14 +3631,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -3836,14 +3680,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellEventHandler</ReturnType>
@@ -3902,14 +3738,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellEventHandler</ReturnType>
@@ -3964,14 +3792,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellEventHandler</ReturnType>
@@ -4025,14 +3845,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellEventHandler</ReturnType>
@@ -4086,14 +3898,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellContextMenuStripNeededEventHandler</ReturnType>
@@ -4162,14 +3966,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellEventHandler</ReturnType>
@@ -4219,14 +4015,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellEventHandler</ReturnType>
@@ -4274,14 +4062,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellEventHandler</ReturnType>
@@ -4331,14 +4111,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellEventHandler</ReturnType>
@@ -4392,14 +4164,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellErrorTextNeededEventHandler</ReturnType>
@@ -4467,14 +4231,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellFormattingEventHandler</ReturnType>
@@ -4561,14 +4317,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellEventHandler</ReturnType>
@@ -4616,14 +4364,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellMouseEventHandler</ReturnType>
@@ -4689,14 +4429,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellMouseEventHandler</ReturnType>
@@ -4748,14 +4480,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellMouseEventHandler</ReturnType>
@@ -4807,14 +4531,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellEventHandler</ReturnType>
@@ -4865,14 +4581,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellEventHandler</ReturnType>
@@ -4923,14 +4631,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellMouseEventHandler</ReturnType>
@@ -4980,14 +4680,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellMouseEventHandler</ReturnType>
@@ -5039,14 +4731,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellPaintingEventHandler</ReturnType>
@@ -5105,14 +4789,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellParsingEventHandler</ReturnType>
@@ -5193,14 +4869,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellStateChangedEventHandler</ReturnType>
@@ -5252,14 +4920,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellEventHandler</ReturnType>
@@ -5313,14 +4973,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellStyleContentChangedEventHandler</ReturnType>
@@ -5397,14 +5049,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellEventHandler</ReturnType>
@@ -5458,14 +5102,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellToolTipTextNeededEventHandler</ReturnType>
@@ -5531,14 +5167,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellEventHandler</ReturnType>
@@ -5589,14 +5217,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellValidatingEventHandler</ReturnType>
@@ -5654,14 +5274,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellEventHandler</ReturnType>
@@ -5719,14 +5331,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellValueEventHandler</ReturnType>
@@ -5790,14 +5394,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellValueEventHandler</ReturnType>
@@ -6044,14 +5640,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumnEventHandler</ReturnType>
@@ -6101,14 +5689,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumnEventHandler</ReturnType>
@@ -6226,14 +5806,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumnEventHandler</ReturnType>
@@ -6280,14 +5852,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumnEventHandler</ReturnType>
@@ -6341,14 +5905,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumnEventHandler</ReturnType>
@@ -6398,14 +5954,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumnDividerDoubleClickEventHandler</ReturnType>
@@ -6459,14 +6007,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumnEventHandler</ReturnType>
@@ -6516,14 +6056,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumnEventHandler</ReturnType>
@@ -6573,14 +6105,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellMouseEventHandler</ReturnType>
@@ -6628,14 +6152,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellMouseEventHandler</ReturnType>
@@ -6748,14 +6264,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -6871,14 +6379,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -6968,14 +6468,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -7092,14 +6584,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewAutoSizeModeEventHandler</ReturnType>
@@ -7199,14 +6683,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumnEventHandler</ReturnType>
@@ -7256,14 +6732,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumnEventHandler</ReturnType>
@@ -7313,14 +6781,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumnEventHandler</ReturnType>
@@ -7432,14 +6892,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumnEventHandler</ReturnType>
@@ -7489,14 +6941,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumnStateChangedEventHandler</ReturnType>
@@ -7564,14 +7008,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumnEventHandler</ReturnType>
@@ -7621,14 +7057,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumnEventHandler</ReturnType>
@@ -7873,14 +7301,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCell</ReturnType>
@@ -8003,14 +7423,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -8062,14 +7474,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -8125,10 +7529,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRow</ReturnType>
@@ -8172,14 +7572,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewBindingCompleteEventHandler</ReturnType>
@@ -8238,14 +7630,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewDataErrorEventHandler</ReturnType>
@@ -8359,14 +7743,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -8428,14 +7804,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -8519,14 +7887,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -8639,14 +7999,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -8731,14 +8083,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowEventHandler</ReturnType>
@@ -8942,10 +8286,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Control</ReturnType>
@@ -8996,14 +8336,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewEditingControlShowingEventHandler</ReturnType>
@@ -9168,14 +8500,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -9386,14 +8710,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCell</ReturnType>
@@ -9663,14 +8979,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -9787,14 +9095,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -9839,12 +9139,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -9977,12 +9271,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataObject</ReturnType>
       </ReturnValue>
@@ -10162,14 +9450,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -10976,14 +10256,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -11082,14 +10354,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowEventHandler</ReturnType>
@@ -17724,14 +16988,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -18743,14 +17999,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -18878,14 +18126,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowEventHandler</ReturnType>
@@ -18939,14 +18179,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowContextMenuStripNeededEventHandler</ReturnType>
@@ -19084,14 +18316,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowEventHandler</ReturnType>
@@ -19149,14 +18373,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Windows.Forms.QuestionEventHandler</ReturnType>
@@ -19207,14 +18423,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowDividerDoubleClickEventHandler</ReturnType>
@@ -19268,14 +18476,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowEventHandler</ReturnType>
@@ -19327,14 +18527,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellEventHandler</ReturnType>
@@ -19386,14 +18578,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowEventHandler</ReturnType>
@@ -19447,14 +18631,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowErrorTextNeededEventHandler</ReturnType>
@@ -19522,14 +18698,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowEventHandler</ReturnType>
@@ -19579,14 +18747,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellMouseEventHandler</ReturnType>
@@ -19634,14 +18794,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellMouseEventHandler</ReturnType>
@@ -19753,14 +18905,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
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-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -19875,14 +19019,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
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       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -20041,14 +19177,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -20163,14 +19291,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
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-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
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-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewAutoSizeModeEventHandler</ReturnType>
@@ -20220,14 +19340,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowEventHandler</ReturnType>
@@ -20279,14 +19391,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowHeightInfoNeededEventHandler</ReturnType>
@@ -20343,14 +19447,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowHeightInfoPushedEventHandler</ReturnType>
@@ -20403,14 +19499,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellEventHandler</ReturnType>
@@ -20458,14 +19546,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowEventHandler</ReturnType>
@@ -20515,14 +19595,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowPostPaintEventHandler</ReturnType>
@@ -20584,14 +19656,6 @@ The <xref:System.Windows.Forms.DataGridView> control replaces and extends the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowPrePaintEventHandler</ReturnType>
@@ -20759,14 +19823,6 @@ if (rowToDelete > -1)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowsAddedEventHandler</ReturnType>
@@ -20873,14 +19929,6 @@ if (rowToDelete > -1)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -20934,14 +19982,6 @@ if (rowToDelete > -1)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowsRemovedEventHandler</ReturnType>
@@ -20994,14 +20034,6 @@ if (rowToDelete > -1)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowStateChangedEventHandler</ReturnType>
@@ -21114,14 +20146,6 @@ if (rowToDelete > -1)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowEventHandler</ReturnType>
@@ -21173,14 +20197,6 @@ if (rowToDelete > -1)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellEventHandler</ReturnType>
@@ -21230,14 +20246,6 @@ if (rowToDelete > -1)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellCancelEventHandler</ReturnType>
@@ -21287,14 +20295,6 @@ if (rowToDelete > -1)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ScrollEventHandler</ReturnType>
@@ -21588,14 +20588,6 @@ if (rowToDelete > -1)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -22277,14 +21269,6 @@ if (rowToDelete > -1)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewSortCompareEventHandler</ReturnType>
@@ -22344,14 +21328,6 @@ if (rowToDelete > -1)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -22411,10 +21387,6 @@ if (rowToDelete > -1)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumn</ReturnType>
@@ -22584,14 +21556,6 @@ if (rowToDelete > -1)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -22771,14 +21735,6 @@ if (rowToDelete > -1)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -23128,14 +22084,6 @@ if (rowToDelete > -1)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowEventHandler</ReturnType>
@@ -23183,14 +22131,6 @@ if (rowToDelete > -1)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowEventHandler</ReturnType>
@@ -23240,14 +22180,6 @@ if (rowToDelete > -1)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRowCancelEventHandler</ReturnType>
@@ -23305,10 +22237,6 @@ if (rowToDelete > -1)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Cursor</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewAdvancedBorderStyle.xml b/xml/System.Windows.Forms/DataGridViewAdvancedBorderStyle.xml
index a219cc28767..ea1b4684463 100644
--- a/xml/System.Windows.Forms/DataGridViewAdvancedBorderStyle.xml
+++ b/xml/System.Windows.Forms/DataGridViewAdvancedBorderStyle.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains border styles for the cells in a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
@@ -198,12 +194,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewAutoSizeColumnModeEventArgs.xml b/xml/System.Windows.Forms/DataGridViewAutoSizeColumnModeEventArgs.xml
index 02bfdf83ce9..32f989b8983 100644
--- a/xml/System.Windows.Forms/DataGridViewAutoSizeColumnModeEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewAutoSizeColumnModeEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.AutoSizeColumnModeChanged" /> event.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewAutoSizeColumnsModeEventArgs.xml b/xml/System.Windows.Forms/DataGridViewAutoSizeColumnsModeEventArgs.xml
index e2d4749f414..9704a1b255d 100644
--- a/xml/System.Windows.Forms/DataGridViewAutoSizeColumnsModeEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewAutoSizeColumnsModeEventArgs.xml
@@ -24,14 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.AutoSizeColumnsModeChanged" /> event.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewBand.xml b/xml/System.Windows.Forms/DataGridViewBand.xml
index df32554b99a..6a9673186ea 100644
--- a/xml/System.Windows.Forms/DataGridViewBand.xml
+++ b/xml/System.Windows.Forms/DataGridViewBand.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a linear collection of elements in a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
@@ -145,14 +141,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ContextMenuStrip</ReturnType>
@@ -714,10 +702,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellStyle</ReturnType>
@@ -1021,14 +1005,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewButtonCell+DataGridViewButtonCellAccessibleObject.xml b/xml/System.Windows.Forms/DataGridViewButtonCell+DataGridViewButtonCellAccessibleObject.xml
index fc962742073..04e8b12e102 100644
--- a/xml/System.Windows.Forms/DataGridViewButtonCell+DataGridViewButtonCellAccessibleObject.xml
+++ b/xml/System.Windows.Forms/DataGridViewButtonCell+DataGridViewButtonCellAccessibleObject.xml
@@ -88,10 +88,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="owner" Type="System.Windows.Forms.DataGridViewCell" />
diff --git a/xml/System.Windows.Forms/DataGridViewButtonCell.xml b/xml/System.Windows.Forms/DataGridViewButtonCell.xml
index a18a623e067..0717164cf48 100644
--- a/xml/System.Windows.Forms/DataGridViewButtonCell.xml
+++ b/xml/System.Windows.Forms/DataGridViewButtonCell.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Displays a button-like user interface (UI) for use in a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
@@ -208,10 +204,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -447,12 +439,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewButtonColumn.xml b/xml/System.Windows.Forms/DataGridViewButtonColumn.xml
index 60a7ec76300..48ac42375f1 100644
--- a/xml/System.Windows.Forms/DataGridViewButtonColumn.xml
+++ b/xml/System.Windows.Forms/DataGridViewButtonColumn.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Hosts a collection of <see cref="T:System.Windows.Forms.DataGridViewButtonCell" /> objects.</summary>
@@ -203,12 +199,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -259,14 +249,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellStyle</ReturnType>
@@ -448,12 +430,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewCell+DataGridViewCellAccessibleObject.xml b/xml/System.Windows.Forms/DataGridViewCell+DataGridViewCellAccessibleObject.xml
index ae7ae3bb844..a64a9883dba 100644
--- a/xml/System.Windows.Forms/DataGridViewCell+DataGridViewCellAccessibleObject.xml
+++ b/xml/System.Windows.Forms/DataGridViewCell+DataGridViewCellAccessibleObject.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about a <see cref="T:System.Windows.Forms.DataGridViewCell" /> to accessibility client applications.</summary>
@@ -204,10 +200,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewCell.xml b/xml/System.Windows.Forms/DataGridViewCell.xml
index f035317ee2c..bd70885493a 100644
--- a/xml/System.Windows.Forms/DataGridViewCell.xml
+++ b/xml/System.Windows.Forms/DataGridViewCell.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an individual cell in a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
@@ -582,14 +578,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ContextMenuStrip</ReturnType>
@@ -694,10 +682,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -998,10 +982,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1074,10 +1054,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -1358,10 +1334,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1436,10 +1408,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -1706,12 +1674,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -1841,12 +1803,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -1923,12 +1879,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ContextMenuStrip</ReturnType>
       </ReturnValue>
@@ -2183,12 +2133,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -4211,14 +4155,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumn</ReturnType>
@@ -4268,14 +4204,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewRow</ReturnType>
@@ -4508,12 +4436,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -4981,12 +4903,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5155,14 +5071,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -5319,14 +5227,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -5394,14 +5294,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewCellCollection.xml b/xml/System.Windows.Forms/DataGridViewCellCollection.xml
index ad31e346016..bf3396582c7 100644
--- a/xml/System.Windows.Forms/DataGridViewCellCollection.xml
+++ b/xml/System.Windows.Forms/DataGridViewCellCollection.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of cells in a <see cref="T:System.Windows.Forms.DataGridViewRow" />.</summary>
@@ -261,14 +257,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.CollectionChangeEventHandler</ReturnType>
@@ -936,12 +924,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1045,12 +1027,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1097,12 +1073,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1148,12 +1118,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1300,14 +1264,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1367,12 +1323,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewCellContextMenuStripNeededEventArgs.xml b/xml/System.Windows.Forms/DataGridViewCellContextMenuStripNeededEventArgs.xml
index 92b7174cdfd..dbf14f9c161 100644
--- a/xml/System.Windows.Forms/DataGridViewCellContextMenuStripNeededEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewCellContextMenuStripNeededEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.CellContextMenuStripNeeded" /> event.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewCellErrorTextNeededEventArgs.xml b/xml/System.Windows.Forms/DataGridViewCellErrorTextNeededEventArgs.xml
index c892e74d051..0c9559fd18d 100644
--- a/xml/System.Windows.Forms/DataGridViewCellErrorTextNeededEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewCellErrorTextNeededEventArgs.xml
@@ -24,14 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.CellErrorTextNeeded" /> event of a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewCellFormattingEventArgs.xml b/xml/System.Windows.Forms/DataGridViewCellFormattingEventArgs.xml
index 0675fa7c46a..0409fe85654 100644
--- a/xml/System.Windows.Forms/DataGridViewCellFormattingEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewCellFormattingEventArgs.xml
@@ -24,14 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.CellFormatting" /> event of a <see cref="T:System.Windows.Forms.DataGridView" />.</summary>
@@ -111,12 +103,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="columnIndex" Type="System.Int32" />
         <Parameter Name="rowIndex" Type="System.Int32" />
diff --git a/xml/System.Windows.Forms/DataGridViewCellMouseEventArgs.xml b/xml/System.Windows.Forms/DataGridViewCellMouseEventArgs.xml
index b1710bfdb24..c6bfb54b53b 100644
--- a/xml/System.Windows.Forms/DataGridViewCellMouseEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewCellMouseEventArgs.xml
@@ -79,12 +79,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="columnIndex" Type="System.Int32" />
         <Parameter Name="rowIndex" Type="System.Int32" />
diff --git a/xml/System.Windows.Forms/DataGridViewCellPaintingEventArgs.xml b/xml/System.Windows.Forms/DataGridViewCellPaintingEventArgs.xml
index 2a5801c7443..001712852b2 100644
--- a/xml/System.Windows.Forms/DataGridViewCellPaintingEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewCellPaintingEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.CellPainting" /> event.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewCellParsingEventArgs.xml b/xml/System.Windows.Forms/DataGridViewCellParsingEventArgs.xml
index bb2b65c62a0..a3cbfdf76b3 100644
--- a/xml/System.Windows.Forms/DataGridViewCellParsingEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewCellParsingEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.CellParsing" /> event of a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewCellStateChangedEventArgs.xml b/xml/System.Windows.Forms/DataGridViewCellStateChangedEventArgs.xml
index bfac781d545..1e88b4c0997 100644
--- a/xml/System.Windows.Forms/DataGridViewCellStateChangedEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewCellStateChangedEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.CellStateChanged" /> event.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewCellStyle.xml b/xml/System.Windows.Forms/DataGridViewCellStyle.xml
index 984a32250ed..38ac6a5322a 100644
--- a/xml/System.Windows.Forms/DataGridViewCellStyle.xml
+++ b/xml/System.Windows.Forms/DataGridViewCellStyle.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the formatting and style information applied to individual cells within a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
@@ -342,14 +338,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -403,12 +391,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -819,14 +801,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1071,14 +1045,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewCellStyleContentChangedEventArgs.xml b/xml/System.Windows.Forms/DataGridViewCellStyleContentChangedEventArgs.xml
index 2da4fa125aa..a6db78fbe68 100644
--- a/xml/System.Windows.Forms/DataGridViewCellStyleContentChangedEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewCellStyleContentChangedEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.CellStyleContentChanged" /> event.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewCellStyleConverter.xml b/xml/System.Windows.Forms/DataGridViewCellStyleConverter.xml
index aa3a1b635be..a2ce0ed8658 100644
--- a/xml/System.Windows.Forms/DataGridViewCellStyleConverter.xml
+++ b/xml/System.Windows.Forms/DataGridViewCellStyleConverter.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Converts <see cref="T:System.Windows.Forms.DataGridViewCellStyle" /> objects to and from other data types.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewCellToolTipTextNeededEventArgs.xml b/xml/System.Windows.Forms/DataGridViewCellToolTipTextNeededEventArgs.xml
index 5e5f6cc5b41..7d75e0533d7 100644
--- a/xml/System.Windows.Forms/DataGridViewCellToolTipTextNeededEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewCellToolTipTextNeededEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.CellToolTipTextNeeded" /> event.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewCellValidatingEventArgs.xml b/xml/System.Windows.Forms/DataGridViewCellValidatingEventArgs.xml
index c79cbc2fe62..a22bcd6f8e5 100644
--- a/xml/System.Windows.Forms/DataGridViewCellValidatingEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewCellValidatingEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.CellValidating" /> event of a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewCellValueEventArgs.xml b/xml/System.Windows.Forms/DataGridViewCellValueEventArgs.xml
index 28473560435..d74d8bf1cb9 100644
--- a/xml/System.Windows.Forms/DataGridViewCellValueEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewCellValueEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.CellValueNeeded" /> and <see cref="E:System.Windows.Forms.DataGridView.CellValuePushed" /> events of the <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewCheckBoxCell+DataGridViewCheckBoxCellAccessibleObject.xml b/xml/System.Windows.Forms/DataGridViewCheckBoxCell+DataGridViewCheckBoxCellAccessibleObject.xml
index 0e569712c15..b8a016bcc27 100644
--- a/xml/System.Windows.Forms/DataGridViewCheckBoxCell+DataGridViewCheckBoxCellAccessibleObject.xml
+++ b/xml/System.Windows.Forms/DataGridViewCheckBoxCell+DataGridViewCheckBoxCellAccessibleObject.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about a <see cref="T:System.Windows.Forms.DataGridViewCheckBoxCell" /> to accessibility client applications.</summary>
@@ -78,10 +74,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="owner" Type="System.Windows.Forms.DataGridViewCell" />
diff --git a/xml/System.Windows.Forms/DataGridViewCheckBoxCell.xml b/xml/System.Windows.Forms/DataGridViewCheckBoxCell.xml
index 3e7c297b2dd..7291674e655 100644
--- a/xml/System.Windows.Forms/DataGridViewCheckBoxCell.xml
+++ b/xml/System.Windows.Forms/DataGridViewCheckBoxCell.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Displays a check box user interface (UI) to use in a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
@@ -369,14 +365,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -469,10 +457,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -520,14 +504,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -718,12 +694,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -803,12 +773,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -935,14 +899,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1720,12 +1676,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -1941,14 +1891,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -2005,14 +1947,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewCheckBoxColumn.xml b/xml/System.Windows.Forms/DataGridViewCheckBoxColumn.xml
index d0d1bfa40fe..c86ca316f2a 100644
--- a/xml/System.Windows.Forms/DataGridViewCheckBoxColumn.xml
+++ b/xml/System.Windows.Forms/DataGridViewCheckBoxColumn.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Hosts a collection of <see cref="T:System.Windows.Forms.DataGridViewCheckBoxCell" /> objects.</summary>
@@ -263,14 +259,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellStyle</ReturnType>
@@ -623,12 +611,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewColumn.xml b/xml/System.Windows.Forms/DataGridViewColumn.xml
index eef39a9afdc..ab4ce2db68e 100644
--- a/xml/System.Windows.Forms/DataGridViewColumn.xml
+++ b/xml/System.Windows.Forms/DataGridViewColumn.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a column in a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
@@ -389,12 +385,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -512,14 +502,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -577,14 +559,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellStyle</ReturnType>
@@ -1034,14 +1008,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumnHeaderCell</ReturnType>
@@ -1096,14 +1062,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1384,14 +1342,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1666,14 +1616,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1719,12 +1661,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewColumnCollection.xml b/xml/System.Windows.Forms/DataGridViewColumnCollection.xml
index 084c0b65c48..2252c3a2d75 100644
--- a/xml/System.Windows.Forms/DataGridViewColumnCollection.xml
+++ b/xml/System.Windows.Forms/DataGridViewColumnCollection.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Windows.Forms.DataGridViewColumn" /> objects in a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
@@ -228,10 +224,6 @@
           <AttributeName Language="C#">[System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
@@ -496,14 +488,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.CollectionChangeEventHandler</ReturnType>
@@ -810,12 +794,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumn</ReturnType>
       </ReturnValue>
@@ -872,12 +850,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumn</ReturnType>
       </ReturnValue>
@@ -926,12 +898,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumn</ReturnType>
       </ReturnValue>
@@ -1842,12 +1808,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2025,12 +1985,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2079,12 +2033,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2130,12 +2078,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2332,14 +2274,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -2390,12 +2324,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewColumnDesignTimeVisibleAttribute.xml b/xml/System.Windows.Forms/DataGridViewColumnDesignTimeVisibleAttribute.xml
index 64b32139586..f2c54c0627b 100644
--- a/xml/System.Windows.Forms/DataGridViewColumnDesignTimeVisibleAttribute.xml
+++ b/xml/System.Windows.Forms/DataGridViewColumnDesignTimeVisibleAttribute.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies whether a column type is visible in the <see cref="T:System.Windows.Forms.DataGridView" /> designer. This class cannot be inherited.</summary>
@@ -180,12 +176,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewColumnDividerDoubleClickEventArgs.xml b/xml/System.Windows.Forms/DataGridViewColumnDividerDoubleClickEventArgs.xml
index f338be2afb6..3b3730ce0d1 100644
--- a/xml/System.Windows.Forms/DataGridViewColumnDividerDoubleClickEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewColumnDividerDoubleClickEventArgs.xml
@@ -63,12 +63,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="columnIndex" Type="System.Int32" />
         <Parameter Name="e" Type="System.Windows.Forms.HandledMouseEventArgs" />
diff --git a/xml/System.Windows.Forms/DataGridViewColumnEventArgs.xml b/xml/System.Windows.Forms/DataGridViewColumnEventArgs.xml
index b4ab67fe6a4..4521b95649b 100644
--- a/xml/System.Windows.Forms/DataGridViewColumnEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewColumnEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for column-related events of a <see cref="T:System.Windows.Forms.DataGridView" />.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewColumnHeaderCell+DataGridViewColumnHeaderCellAccessibleObject.xml b/xml/System.Windows.Forms/DataGridViewColumnHeaderCell+DataGridViewColumnHeaderCellAccessibleObject.xml
index a869e9d210b..3cb77e33b89 100644
--- a/xml/System.Windows.Forms/DataGridViewColumnHeaderCell+DataGridViewColumnHeaderCellAccessibleObject.xml
+++ b/xml/System.Windows.Forms/DataGridViewColumnHeaderCell+DataGridViewColumnHeaderCellAccessibleObject.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about a <see cref="T:System.Windows.Forms.DataGridViewColumnHeaderCell" /> to accessibility client applications.</summary>
@@ -149,10 +145,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -234,10 +226,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -492,10 +480,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewColumnHeaderCell.xml b/xml/System.Windows.Forms/DataGridViewColumnHeaderCell.xml
index fe4fe9b375a..cfd5d8e536f 100644
--- a/xml/System.Windows.Forms/DataGridViewColumnHeaderCell.xml
+++ b/xml/System.Windows.Forms/DataGridViewColumnHeaderCell.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a column header in a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
@@ -273,12 +269,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ContextMenuStrip</ReturnType>
       </ReturnValue>
@@ -419,12 +409,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -532,12 +516,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewColumnStateChangedEventArgs.xml b/xml/System.Windows.Forms/DataGridViewColumnStateChangedEventArgs.xml
index 4a2f9aa5c68..e5ee454b4da 100644
--- a/xml/System.Windows.Forms/DataGridViewColumnStateChangedEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewColumnStateChangedEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.ColumnStateChanged" /> event.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewComboBoxCell+DataGridViewComboBoxCellAccessibleObject.xml b/xml/System.Windows.Forms/DataGridViewComboBoxCell+DataGridViewComboBoxCellAccessibleObject.xml
index 231e3312c4e..ff919297cf5 100644
--- a/xml/System.Windows.Forms/DataGridViewComboBoxCell+DataGridViewComboBoxCellAccessibleObject.xml
+++ b/xml/System.Windows.Forms/DataGridViewComboBoxCell+DataGridViewComboBoxCellAccessibleObject.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the accessibility object for the current <see cref="T:System.Windows.Forms.DataGridViewComboBoxCell" /> object.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewComboBoxCell+ObjectCollection.xml b/xml/System.Windows.Forms/DataGridViewComboBoxCell+ObjectCollection.xml
index 7f600af0de9..d4afaa1845a 100644
--- a/xml/System.Windows.Forms/DataGridViewComboBoxCell+ObjectCollection.xml
+++ b/xml/System.Windows.Forms/DataGridViewComboBoxCell+ObjectCollection.xml
@@ -285,12 +285,6 @@ The cell is in a shared row.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -440,12 +434,6 @@ The cell is in a shared row.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -485,12 +473,6 @@ The cell is in a shared row.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -580,14 +562,6 @@ The cell is in a shared row.</exception>
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -631,12 +605,6 @@ The cell is in a shared row.</exception>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -862,10 +830,6 @@ The cell is in a shared row.</exception>
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewComboBoxCell.xml b/xml/System.Windows.Forms/DataGridViewComboBoxCell.xml
index 8520b4bbb4a..910ed55db73 100644
--- a/xml/System.Windows.Forms/DataGridViewComboBoxCell.xml
+++ b/xml/System.Windows.Forms/DataGridViewComboBoxCell.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Displays a combo box in a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
@@ -237,14 +233,6 @@ For additional information, see [What's New in Accessibility in the .NET Framewo
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -771,12 +759,6 @@ For additional information, see [What's New in Accessibility in the .NET Framewo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -1417,12 +1399,6 @@ For additional information, see [What's New in Accessibility in the .NET Framewo
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewComboBoxColumn.xml b/xml/System.Windows.Forms/DataGridViewComboBoxColumn.xml
index 402ab290e6f..4627f6f447c 100644
--- a/xml/System.Windows.Forms/DataGridViewComboBoxColumn.xml
+++ b/xml/System.Windows.Forms/DataGridViewComboBoxColumn.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a column of <see cref="T:System.Windows.Forms.DataGridViewComboBoxCell" /> objects.</summary>
@@ -227,14 +223,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCell</ReturnType>
@@ -349,18 +337,10 @@
           <AttributeName Language="C#">[get: System.Diagnostics.CodeAnalysis.MemberNotNull("ComboBoxCellTemplate")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Diagnostics.CodeAnalysis.MemberNotNull("ComboBoxCellTemplate")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="windowsdesktop-9.0">
           <AttributeName Language="C#">[set: System.Diagnostics.CodeAnalysis.MemberNotNull("ComboBoxCellTemplate")]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Diagnostics.CodeAnalysis.MemberNotNull("ComboBoxCellTemplate")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewComboBoxEditingControl.xml b/xml/System.Windows.Forms/DataGridViewComboBoxEditingControl.xml
index 3c35bb7ef7a..4f08e9a8c96 100644
--- a/xml/System.Windows.Forms/DataGridViewComboBoxEditingControl.xml
+++ b/xml/System.Windows.Forms/DataGridViewComboBoxEditingControl.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the hosted combo box control in a <see cref="T:System.Windows.Forms.DataGridViewComboBoxCell" />.</summary>
@@ -217,14 +213,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridView</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewDataErrorEventArgs.xml b/xml/System.Windows.Forms/DataGridViewDataErrorEventArgs.xml
index 9897941192a..5aaf34aa6d0 100644
--- a/xml/System.Windows.Forms/DataGridViewDataErrorEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewDataErrorEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.DataError" /> event.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewEditingControlShowingEventArgs.xml b/xml/System.Windows.Forms/DataGridViewEditingControlShowingEventArgs.xml
index 53ef9e9063a..15f8b70ef53 100644
--- a/xml/System.Windows.Forms/DataGridViewEditingControlShowingEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewEditingControlShowingEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.EditingControlShowing" /> event.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewElement.xml b/xml/System.Windows.Forms/DataGridViewElement.xml
index ba2e7c66d41..925636bb1e7 100644
--- a/xml/System.Windows.Forms/DataGridViewElement.xml
+++ b/xml/System.Windows.Forms/DataGridViewElement.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the base class for elements of a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
@@ -114,14 +110,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridView</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewHeaderCell.xml b/xml/System.Windows.Forms/DataGridViewHeaderCell.xml
index 15ee696c368..0ade55583c9 100644
--- a/xml/System.Windows.Forms/DataGridViewHeaderCell.xml
+++ b/xml/System.Windows.Forms/DataGridViewHeaderCell.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains functionality common to row header cells and column header cells.</summary>
@@ -342,12 +338,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ContextMenuStrip</ReturnType>
       </ReturnValue>
@@ -496,12 +486,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -1192,14 +1176,6 @@ For more information about row sharing, see [Best Practices for Scaling the Wind
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewImageCell+DataGridViewImageCellAccessibleObject.xml b/xml/System.Windows.Forms/DataGridViewImageCell+DataGridViewImageCellAccessibleObject.xml
index 1a5b85f7218..9e698c96dd3 100644
--- a/xml/System.Windows.Forms/DataGridViewImageCell+DataGridViewImageCellAccessibleObject.xml
+++ b/xml/System.Windows.Forms/DataGridViewImageCell+DataGridViewImageCellAccessibleObject.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about a <see cref="T:System.Windows.Forms.DataGridViewImageCell" /> to accessibility client applications.</summary>
@@ -124,10 +120,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewImageCell.xml b/xml/System.Windows.Forms/DataGridViewImageCell.xml
index 5660dca4a24..eaa22c3c339 100644
--- a/xml/System.Windows.Forms/DataGridViewImageCell.xml
+++ b/xml/System.Windows.Forms/DataGridViewImageCell.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Displays a graphic in a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
@@ -259,10 +255,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -367,10 +359,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -528,12 +516,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -647,12 +629,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -892,14 +868,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewImageColumn.xml b/xml/System.Windows.Forms/DataGridViewImageColumn.xml
index 6a0170628a9..8adfd48f2d4 100644
--- a/xml/System.Windows.Forms/DataGridViewImageColumn.xml
+++ b/xml/System.Windows.Forms/DataGridViewImageColumn.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Hosts a collection of <see cref="T:System.Windows.Forms.DataGridViewImageCell" /> objects.</summary>
@@ -263,12 +259,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -313,14 +303,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewCellStyle</ReturnType>
@@ -400,18 +382,10 @@
           <AttributeName Language="C#">[get: System.Diagnostics.CodeAnalysis.MemberNotNull("ImageCellTemplate")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Diagnostics.CodeAnalysis.MemberNotNull("ImageCellTemplate")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="windowsdesktop-9.0">
           <AttributeName Language="C#">[set: System.Diagnostics.CodeAnalysis.MemberNotNull("ImageCellTemplate")]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Diagnostics.CodeAnalysis.MemberNotNull("ImageCellTemplate")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -652,12 +626,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewLinkCell+DataGridViewLinkCellAccessibleObject.xml b/xml/System.Windows.Forms/DataGridViewLinkCell+DataGridViewLinkCellAccessibleObject.xml
index bc7b9874b9e..70132364b3e 100644
--- a/xml/System.Windows.Forms/DataGridViewLinkCell+DataGridViewLinkCellAccessibleObject.xml
+++ b/xml/System.Windows.Forms/DataGridViewLinkCell+DataGridViewLinkCellAccessibleObject.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about a <see cref="T:System.Windows.Forms.DataGridViewLinkCell" /> control to accessibility client applications.</summary>
@@ -85,10 +81,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="owner" Type="System.Windows.Forms.DataGridViewCell" />
diff --git a/xml/System.Windows.Forms/DataGridViewLinkCell.xml b/xml/System.Windows.Forms/DataGridViewLinkCell.xml
index f563c96a82e..c5f14594162 100644
--- a/xml/System.Windows.Forms/DataGridViewLinkCell.xml
+++ b/xml/System.Windows.Forms/DataGridViewLinkCell.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a cell that contains a link.</summary>
@@ -244,10 +240,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -294,10 +286,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -448,12 +436,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewLinkColumn.xml b/xml/System.Windows.Forms/DataGridViewLinkColumn.xml
index 1677567af52..bb8e3bd9848 100644
--- a/xml/System.Windows.Forms/DataGridViewLinkColumn.xml
+++ b/xml/System.Windows.Forms/DataGridViewLinkColumn.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a column of cells that contain links in a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
@@ -261,12 +257,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -495,12 +485,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewRow+DataGridViewRowAccessibleObject.xml b/xml/System.Windows.Forms/DataGridViewRow+DataGridViewRowAccessibleObject.xml
index 9447d0fc4cc..d917096a5d2 100644
--- a/xml/System.Windows.Forms/DataGridViewRow+DataGridViewRowAccessibleObject.xml
+++ b/xml/System.Windows.Forms/DataGridViewRow+DataGridViewRowAccessibleObject.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about a <see cref="T:System.Windows.Forms.DataGridViewRow" /> to accessibility client applications.</summary>
@@ -131,10 +127,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="owner" Type="System.Windows.Forms.DataGridViewRow" />
@@ -315,10 +307,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
@@ -357,10 +345,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -652,10 +636,6 @@ The <xref:System.Windows.Forms.DataGridViewRow.DataGridViewRowAccessibleObject.N
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewRow.xml b/xml/System.Windows.Forms/DataGridViewRow.xml
index 666e85a2158..a64e5b8d85e 100644
--- a/xml/System.Windows.Forms/DataGridViewRow.xml
+++ b/xml/System.Windows.Forms/DataGridViewRow.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a row in a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
@@ -357,14 +353,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ContextMenuStrip</ReturnType>
@@ -640,10 +628,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1040,12 +1024,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ContextMenuStrip</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewRowCancelEventArgs.xml b/xml/System.Windows.Forms/DataGridViewRowCancelEventArgs.xml
index 1cb5b89564f..36d3bb0dd20 100644
--- a/xml/System.Windows.Forms/DataGridViewRowCancelEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewRowCancelEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.UserDeletingRow" /> event of a <see cref="T:System.Windows.Forms.DataGridView" />.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewRowCollection.xml b/xml/System.Windows.Forms/DataGridViewRowCollection.xml
index 28a15870de1..bdc7c2c728f 100644
--- a/xml/System.Windows.Forms/DataGridViewRowCollection.xml
+++ b/xml/System.Windows.Forms/DataGridViewRowCollection.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A collection of <see cref="T:System.Windows.Forms.DataGridViewRow" /> objects.</summary>
@@ -853,14 +849,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.CollectionChangeEventHandler</ReturnType>
@@ -2658,12 +2646,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2839,12 +2821,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2891,12 +2867,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2942,12 +2912,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3146,14 +3110,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -3209,12 +3165,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewRowContextMenuStripNeededEventArgs.xml b/xml/System.Windows.Forms/DataGridViewRowContextMenuStripNeededEventArgs.xml
index 1302cb14e47..4cbcf7bc864 100644
--- a/xml/System.Windows.Forms/DataGridViewRowContextMenuStripNeededEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewRowContextMenuStripNeededEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.RowContextMenuStripNeeded" /> event.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewRowDividerDoubleClickEventArgs.xml b/xml/System.Windows.Forms/DataGridViewRowDividerDoubleClickEventArgs.xml
index a9f5eb99888..f7b14109493 100644
--- a/xml/System.Windows.Forms/DataGridViewRowDividerDoubleClickEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewRowDividerDoubleClickEventArgs.xml
@@ -62,12 +62,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="rowIndex" Type="System.Int32" />
         <Parameter Name="e" Type="System.Windows.Forms.HandledMouseEventArgs" />
diff --git a/xml/System.Windows.Forms/DataGridViewRowErrorTextNeededEventArgs.xml b/xml/System.Windows.Forms/DataGridViewRowErrorTextNeededEventArgs.xml
index 9990896fc46..eae97ab97f5 100644
--- a/xml/System.Windows.Forms/DataGridViewRowErrorTextNeededEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewRowErrorTextNeededEventArgs.xml
@@ -24,14 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.RowErrorTextNeeded" /> event of a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewRowEventArgs.xml b/xml/System.Windows.Forms/DataGridViewRowEventArgs.xml
index 1ce2bcbc1bd..b3317e8650b 100644
--- a/xml/System.Windows.Forms/DataGridViewRowEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewRowEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for row-related <see cref="T:System.Windows.Forms.DataGridView" /> events.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewRowHeaderCell+DataGridViewRowHeaderCellAccessibleObject.xml b/xml/System.Windows.Forms/DataGridViewRowHeaderCell+DataGridViewRowHeaderCellAccessibleObject.xml
index 31eba8f5fdc..2d13322cca3 100644
--- a/xml/System.Windows.Forms/DataGridViewRowHeaderCell+DataGridViewRowHeaderCellAccessibleObject.xml
+++ b/xml/System.Windows.Forms/DataGridViewRowHeaderCell+DataGridViewRowHeaderCellAccessibleObject.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about a <see cref="T:System.Windows.Forms.DataGridViewRowHeaderCell" /> to accessibility client applications.</summary>
@@ -148,10 +144,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -470,10 +462,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewRowHeaderCell.xml b/xml/System.Windows.Forms/DataGridViewRowHeaderCell.xml
index f98e9ed90b0..67ebcae68b7 100644
--- a/xml/System.Windows.Forms/DataGridViewRowHeaderCell.xml
+++ b/xml/System.Windows.Forms/DataGridViewRowHeaderCell.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a row header of a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
@@ -342,12 +338,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ContextMenuStrip</ReturnType>
       </ReturnValue>
@@ -467,12 +457,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -586,12 +570,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewRowPostPaintEventArgs.xml b/xml/System.Windows.Forms/DataGridViewRowPostPaintEventArgs.xml
index 1f864e958d0..cd8d4e23f01 100644
--- a/xml/System.Windows.Forms/DataGridViewRowPostPaintEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewRowPostPaintEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.RowPostPaint" /> event.</summary>
@@ -260,10 +256,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewRowPrePaintEventArgs.xml b/xml/System.Windows.Forms/DataGridViewRowPrePaintEventArgs.xml
index 0de706be617..bf905084003 100644
--- a/xml/System.Windows.Forms/DataGridViewRowPrePaintEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewRowPrePaintEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.RowPrePaint" /> event.</summary>
@@ -261,10 +257,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewRowStateChangedEventArgs.xml b/xml/System.Windows.Forms/DataGridViewRowStateChangedEventArgs.xml
index fc68318e590..4f42beaa07d 100644
--- a/xml/System.Windows.Forms/DataGridViewRowStateChangedEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewRowStateChangedEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.RowStateChanged" /> event of a <see cref="T:System.Windows.Forms.DataGridView" />.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewSelectedCellCollection.xml b/xml/System.Windows.Forms/DataGridViewSelectedCellCollection.xml
index a38893d9d4b..6e8969671c9 100644
--- a/xml/System.Windows.Forms/DataGridViewSelectedCellCollection.xml
+++ b/xml/System.Windows.Forms/DataGridViewSelectedCellCollection.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of cells that are selected in a <see cref="T:System.Windows.Forms.DataGridView" />.</summary>
@@ -540,12 +536,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -637,12 +627,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -689,12 +673,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -740,12 +718,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -882,14 +854,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -943,12 +907,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewSelectedColumnCollection.xml b/xml/System.Windows.Forms/DataGridViewSelectedColumnCollection.xml
index f6321e94288..55309d742e5 100644
--- a/xml/System.Windows.Forms/DataGridViewSelectedColumnCollection.xml
+++ b/xml/System.Windows.Forms/DataGridViewSelectedColumnCollection.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Windows.Forms.DataGridViewColumn" /> objects that are selected in a <see cref="T:System.Windows.Forms.DataGridView" />.</summary>
@@ -547,12 +543,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -646,12 +636,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -698,12 +682,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -749,12 +727,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -892,14 +864,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -953,12 +917,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewSelectedRowCollection.xml b/xml/System.Windows.Forms/DataGridViewSelectedRowCollection.xml
index 66c949a97c5..53c7b2377eb 100644
--- a/xml/System.Windows.Forms/DataGridViewSelectedRowCollection.xml
+++ b/xml/System.Windows.Forms/DataGridViewSelectedRowCollection.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Windows.Forms.DataGridViewRow" /> objects that are selected in a <see cref="T:System.Windows.Forms.DataGridView" />.</summary>
@@ -542,12 +538,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -641,12 +631,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -693,12 +677,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -744,12 +722,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -887,14 +859,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -948,12 +912,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewSortCompareEventArgs.xml b/xml/System.Windows.Forms/DataGridViewSortCompareEventArgs.xml
index fe9bc62df30..8694d2eb179 100644
--- a/xml/System.Windows.Forms/DataGridViewSortCompareEventArgs.xml
+++ b/xml/System.Windows.Forms/DataGridViewSortCompareEventArgs.xml
@@ -24,14 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.DataGridView.SortCompare" /> event.</summary>
@@ -261,10 +253,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridViewColumn</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewTextBoxCell+DataGridViewTextBoxCellAccessibleObject.xml b/xml/System.Windows.Forms/DataGridViewTextBoxCell+DataGridViewTextBoxCellAccessibleObject.xml
index d9dc5cf1c82..83e1edf8370 100644
--- a/xml/System.Windows.Forms/DataGridViewTextBoxCell+DataGridViewTextBoxCellAccessibleObject.xml
+++ b/xml/System.Windows.Forms/DataGridViewTextBoxCell+DataGridViewTextBoxCellAccessibleObject.xml
@@ -22,14 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the accessibility object for the current <see cref="T:System.Windows.Forms.DataGridViewTextBoxCell" /> object.</summary>
@@ -54,12 +46,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="owner" Type="System.Windows.Forms.DataGridViewCell" />
       </Parameters>
diff --git a/xml/System.Windows.Forms/DataGridViewTextBoxCell.xml b/xml/System.Windows.Forms/DataGridViewTextBoxCell.xml
index ffdcfe7ea9b..5e49966615f 100644
--- a/xml/System.Windows.Forms/DataGridViewTextBoxCell.xml
+++ b/xml/System.Windows.Forms/DataGridViewTextBoxCell.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Displays editable text information in a <see cref="T:System.Windows.Forms.DataGridView" /> control.</summary>
diff --git a/xml/System.Windows.Forms/DataGridViewTextBoxColumn.xml b/xml/System.Windows.Forms/DataGridViewTextBoxColumn.xml
index 2f6c1387374..0851c873af6 100644
--- a/xml/System.Windows.Forms/DataGridViewTextBoxColumn.xml
+++ b/xml/System.Windows.Forms/DataGridViewTextBoxColumn.xml
@@ -32,14 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Hosts a collection of <see cref="T:System.Windows.Forms.DataGridViewTextBoxCell" /> cells.</summary>
@@ -312,12 +304,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewTextBoxEditingControl.xml b/xml/System.Windows.Forms/DataGridViewTextBoxEditingControl.xml
index 0938d1219b1..7737236d595 100644
--- a/xml/System.Windows.Forms/DataGridViewTextBoxEditingControl.xml
+++ b/xml/System.Windows.Forms/DataGridViewTextBoxEditingControl.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a text box control that can be hosted in a <see cref="T:System.Windows.Forms.DataGridViewTextBoxCell" />.</summary>
@@ -204,14 +200,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridView</ReturnType>
diff --git a/xml/System.Windows.Forms/DataGridViewTopLeftHeaderCell+DataGridViewTopLeftHeaderCellAccessibleObject.xml b/xml/System.Windows.Forms/DataGridViewTopLeftHeaderCell+DataGridViewTopLeftHeaderCellAccessibleObject.xml
index c61454e894b..cc824cd7acf 100644
--- a/xml/System.Windows.Forms/DataGridViewTopLeftHeaderCell+DataGridViewTopLeftHeaderCellAccessibleObject.xml
+++ b/xml/System.Windows.Forms/DataGridViewTopLeftHeaderCell+DataGridViewTopLeftHeaderCellAccessibleObject.xml
@@ -246,12 +246,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DataGridViewTopLeftHeaderCell.xml b/xml/System.Windows.Forms/DataGridViewTopLeftHeaderCell.xml
index 8e404979b17..a5ac425865f 100644
--- a/xml/System.Windows.Forms/DataGridViewTopLeftHeaderCell.xml
+++ b/xml/System.Windows.Forms/DataGridViewTopLeftHeaderCell.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the cell in the top left corner of the <see cref="T:System.Windows.Forms.DataGridView" /> that sits above the row headers and to the left of the column headers.</summary>
diff --git a/xml/System.Windows.Forms/DataObject.xml b/xml/System.Windows.Forms/DataObject.xml
index 62e3aea04ed..4181799bea6 100644
--- a/xml/System.Windows.Forms/DataObject.xml
+++ b/xml/System.Windows.Forms/DataObject.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Implements a basic data transfer mechanism.</summary>
@@ -475,12 +471,6 @@ You can add data in any format to the <xref:System.Windows.Forms.DataObject> whe
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Stream</ReturnType>
       </ReturnValue>
@@ -1141,12 +1131,6 @@ You can add data in any format to the <xref:System.Windows.Forms.DataObject> whe
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Image</ReturnType>
       </ReturnValue>
@@ -1401,12 +1385,6 @@ You can add data in any format to the <xref:System.Windows.Forms.DataObject> whe
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1996,12 +1974,6 @@ You can add data in any format to the <xref:System.Windows.Forms.DataObject> whe
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DateBoldEventArgs.xml b/xml/System.Windows.Forms/DateBoldEventArgs.xml
index 4159ec512a1..8342dc9b6ea 100644
--- a/xml/System.Windows.Forms/DateBoldEventArgs.xml
+++ b/xml/System.Windows.Forms/DateBoldEventArgs.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for events that are internal to the <see cref="T:System.Windows.Forms.MonthCalendar" /> control.</summary>
diff --git a/xml/System.Windows.Forms/DateTimePicker+DateTimePickerAccessibleObject.xml b/xml/System.Windows.Forms/DateTimePicker+DateTimePickerAccessibleObject.xml
index fc2ef3ea088..3e06fc83acd 100644
--- a/xml/System.Windows.Forms/DateTimePicker+DateTimePickerAccessibleObject.xml
+++ b/xml/System.Windows.Forms/DateTimePicker+DateTimePickerAccessibleObject.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about the <see cref="T:System.Windows.Forms.DateTimePicker" /> control to accessibility client applications.</summary>
@@ -156,10 +152,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/DateTimePicker.xml b/xml/System.Windows.Forms/DateTimePicker.xml
index 4a0e017058d..8a443e42c15 100644
--- a/xml/System.Windows.Forms/DateTimePicker.xml
+++ b/xml/System.Windows.Forms/DateTimePicker.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Windows control that allows the user to select a date and a time and to display the date and time with a specified format.</summary>
@@ -426,14 +422,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -862,12 +850,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -944,10 +926,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.CreateParams</ReturnType>
@@ -2048,12 +2026,6 @@ The value assigned is less than the <see cref="F:System.Windows.Forms.DateTimePi
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2100,12 +2072,6 @@ The value assigned is less than the <see cref="F:System.Windows.Forms.DateTimePi
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2148,12 +2114,6 @@ The value assigned is less than the <see cref="F:System.Windows.Forms.DateTimePi
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2185,12 +2145,6 @@ The value assigned is less than the <see cref="F:System.Windows.Forms.DateTimePi
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2234,12 +2188,6 @@ The value assigned is less than the <see cref="F:System.Windows.Forms.DateTimePi
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2282,12 +2230,6 @@ The value assigned is less than the <see cref="F:System.Windows.Forms.DateTimePi
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2318,12 +2260,6 @@ The value assigned is less than the <see cref="F:System.Windows.Forms.DateTimePi
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2366,12 +2302,6 @@ The value assigned is less than the <see cref="F:System.Windows.Forms.DateTimePi
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2419,10 +2349,6 @@ The value assigned is less than the <see cref="F:System.Windows.Forms.DateTimePi
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -2467,12 +2393,6 @@ The value assigned is less than the <see cref="F:System.Windows.Forms.DateTimePi
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2504,12 +2424,6 @@ The value assigned is less than the <see cref="F:System.Windows.Forms.DateTimePi
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2983,14 +2897,6 @@ The value assigned is less than the <see cref="F:System.Windows.Forms.DateTimePi
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -3069,12 +2975,6 @@ The value assigned is less than the <see cref="F:System.Windows.Forms.DateTimePi
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DockingAttribute.xml b/xml/System.Windows.Forms/DockingAttribute.xml
index db4678df5d5..7417d208598 100644
--- a/xml/System.Windows.Forms/DockingAttribute.xml
+++ b/xml/System.Windows.Forms/DockingAttribute.xml
@@ -187,12 +187,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DomainUpDown+DomainItemAccessibleObject.xml b/xml/System.Windows.Forms/DomainUpDown+DomainItemAccessibleObject.xml
index 3237c1be6d9..c4c24ea0777 100644
--- a/xml/System.Windows.Forms/DomainUpDown+DomainItemAccessibleObject.xml
+++ b/xml/System.Windows.Forms/DomainUpDown+DomainItemAccessibleObject.xml
@@ -75,12 +75,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String">
           <Attributes>
diff --git a/xml/System.Windows.Forms/DomainUpDown+DomainUpDownAccessibleObject.xml b/xml/System.Windows.Forms/DomainUpDown+DomainUpDownAccessibleObject.xml
index 5936617aea7..91e2841bb4b 100644
--- a/xml/System.Windows.Forms/DomainUpDown+DomainUpDownAccessibleObject.xml
+++ b/xml/System.Windows.Forms/DomainUpDown+DomainUpDownAccessibleObject.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about the <see cref="T:System.Windows.Forms.DomainUpDown" /> control to accessibility client applications.</summary>
@@ -138,12 +134,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DomainUpDown.xml b/xml/System.Windows.Forms/DomainUpDown.xml
index 84b8073cf6e..07466997e96 100644
--- a/xml/System.Windows.Forms/DomainUpDown.xml
+++ b/xml/System.Windows.Forms/DomainUpDown.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Windows spin box (also known as an up-down control) that displays string values.</summary>
@@ -242,10 +238,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DomainUpDown+DomainUpDownItemCollection</ReturnType>
@@ -299,10 +291,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -345,12 +333,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -440,12 +422,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -815,12 +791,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DpiChangedEventArgs.xml b/xml/System.Windows.Forms/DpiChangedEventArgs.xml
index 1ab215b30b6..89269b68df8 100644
--- a/xml/System.Windows.Forms/DpiChangedEventArgs.xml
+++ b/xml/System.Windows.Forms/DpiChangedEventArgs.xml
@@ -118,12 +118,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/DragEventArgs.xml b/xml/System.Windows.Forms/DragEventArgs.xml
index 8ba0454a148..20e0d908adf 100644
--- a/xml/System.Windows.Forms/DragEventArgs.xml
+++ b/xml/System.Windows.Forms/DragEventArgs.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.Control.DragDrop" />, <see cref="E:System.Windows.Forms.Control.DragEnter" />, or <see cref="E:System.Windows.Forms.Control.DragOver" /> event.</summary>
diff --git a/xml/System.Windows.Forms/DrawItemEventArgs.xml b/xml/System.Windows.Forms/DrawItemEventArgs.xml
index d7f43a5d21e..7bfc74292a4 100644
--- a/xml/System.Windows.Forms/DrawItemEventArgs.xml
+++ b/xml/System.Windows.Forms/DrawItemEventArgs.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see langword="DrawItem" /> event.</summary>
@@ -444,10 +440,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
diff --git a/xml/System.Windows.Forms/DrawListViewColumnHeaderEventArgs.xml b/xml/System.Windows.Forms/DrawListViewColumnHeaderEventArgs.xml
index 70d1536abc9..617f2bcff72 100644
--- a/xml/System.Windows.Forms/DrawListViewColumnHeaderEventArgs.xml
+++ b/xml/System.Windows.Forms/DrawListViewColumnHeaderEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.ListView.DrawColumnHeader" /> event.</summary>
@@ -584,10 +580,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Graphics</ReturnType>
diff --git a/xml/System.Windows.Forms/DrawListViewItemEventArgs.xml b/xml/System.Windows.Forms/DrawListViewItemEventArgs.xml
index 62be6ed739a..0fa2b6d5e2a 100644
--- a/xml/System.Windows.Forms/DrawListViewItemEventArgs.xml
+++ b/xml/System.Windows.Forms/DrawListViewItemEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.ListView.DrawItem" /> event.</summary>
diff --git a/xml/System.Windows.Forms/DrawListViewSubItemEventArgs.xml b/xml/System.Windows.Forms/DrawListViewSubItemEventArgs.xml
index 4b7eef375f6..c6724f85e85 100644
--- a/xml/System.Windows.Forms/DrawListViewSubItemEventArgs.xml
+++ b/xml/System.Windows.Forms/DrawListViewSubItemEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.ListView.DrawSubItem" /> event.</summary>
@@ -537,10 +533,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Graphics</ReturnType>
diff --git a/xml/System.Windows.Forms/DrawToolTipEventArgs.xml b/xml/System.Windows.Forms/DrawToolTipEventArgs.xml
index 4bc655ab53d..cc25fe3d708 100644
--- a/xml/System.Windows.Forms/DrawToolTipEventArgs.xml
+++ b/xml/System.Windows.Forms/DrawToolTipEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.ToolTip.Draw" /> event.</summary>
@@ -560,10 +556,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Graphics</ReturnType>
diff --git a/xml/System.Windows.Forms/DrawTreeNodeEventArgs.xml b/xml/System.Windows.Forms/DrawTreeNodeEventArgs.xml
index 2a4b3313f9f..2613d8fe846 100644
--- a/xml/System.Windows.Forms/DrawTreeNodeEventArgs.xml
+++ b/xml/System.Windows.Forms/DrawTreeNodeEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.TreeView.DrawNode" /> event.</summary>
@@ -306,10 +302,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TreeNode</ReturnType>
diff --git a/xml/System.Windows.Forms/ErrorProvider.xml b/xml/System.Windows.Forms/ErrorProvider.xml
index b2ce6a33c81..c511b40ca97 100644
--- a/xml/System.Windows.Forms/ErrorProvider.xml
+++ b/xml/System.Windows.Forms/ErrorProvider.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a user interface for indicating that a control on a form has an error associated with it.</summary>
@@ -234,10 +230,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -396,12 +388,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -492,14 +478,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ContainerControl</ReturnType>
@@ -562,14 +540,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -639,14 +609,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1055,14 +1017,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1280,10 +1234,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.ISite</ReturnType>
@@ -1419,14 +1369,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Windows.Forms/FeatureSupport.xml b/xml/System.Windows.Forms/FeatureSupport.xml
index 898979180f9..40dbe35cf80 100644
--- a/xml/System.Windows.Forms/FeatureSupport.xml
+++ b/xml/System.Windows.Forms/FeatureSupport.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides <see langword="static" /> methods for retrieving feature information from the current system.</summary>
diff --git a/xml/System.Windows.Forms/FileDialog.xml b/xml/System.Windows.Forms/FileDialog.xml
index 7367ca09bc0..95d40f73476 100644
--- a/xml/System.Windows.Forms/FileDialog.xml
+++ b/xml/System.Windows.Forms/FileDialog.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Displays a dialog box from which the user can select a file.</summary>
diff --git a/xml/System.Windows.Forms/FileDialogCustomPlace.xml b/xml/System.Windows.Forms/FileDialogCustomPlace.xml
index c6b912a5b77..c049e0e234d 100644
--- a/xml/System.Windows.Forms/FileDialogCustomPlace.xml
+++ b/xml/System.Windows.Forms/FileDialogCustomPlace.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an entry in a <see cref="T:System.Windows.Forms.FileDialog" /> custom place collection for Windows Vista.</summary>
@@ -134,12 +130,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="path" Type="System.String" />
       </Parameters>
diff --git a/xml/System.Windows.Forms/FileDialogCustomPlacesCollection.xml b/xml/System.Windows.Forms/FileDialogCustomPlacesCollection.xml
index d81e6ad4302..d0ea79d45a5 100644
--- a/xml/System.Windows.Forms/FileDialogCustomPlacesCollection.xml
+++ b/xml/System.Windows.Forms/FileDialogCustomPlacesCollection.xml
@@ -176,12 +176,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/FlatButtonAppearance.xml b/xml/System.Windows.Forms/FlatButtonAppearance.xml
index 52fb296a9b4..be2b3db70c2 100644
--- a/xml/System.Windows.Forms/FlatButtonAppearance.xml
+++ b/xml/System.Windows.Forms/FlatButtonAppearance.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides properties that specify the appearance of <see cref="T:System.Windows.Forms.Button" /> controls whose <see cref="T:System.Windows.Forms.FlatStyle" /> is <see cref="F:System.Windows.Forms.FlatStyle.Flat" />.</summary>
diff --git a/xml/System.Windows.Forms/FlowLayoutPanel.xml b/xml/System.Windows.Forms/FlowLayoutPanel.xml
index 6d62cde40ca..19f45f13644 100644
--- a/xml/System.Windows.Forms/FlowLayoutPanel.xml
+++ b/xml/System.Windows.Forms/FlowLayoutPanel.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a panel that dynamically lays out its contents horizontally or vertically.</summary>
diff --git a/xml/System.Windows.Forms/FlowLayoutSettings.xml b/xml/System.Windows.Forms/FlowLayoutSettings.xml
index 528252e93c4..1c3a3e8ee0a 100644
--- a/xml/System.Windows.Forms/FlowLayoutSettings.xml
+++ b/xml/System.Windows.Forms/FlowLayoutSettings.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Collects the characteristics associated with flow layouts.</summary>
diff --git a/xml/System.Windows.Forms/FolderBrowserDialog.xml b/xml/System.Windows.Forms/FolderBrowserDialog.xml
index 1ccce5ce928..9b09cb3912c 100644
--- a/xml/System.Windows.Forms/FolderBrowserDialog.xml
+++ b/xml/System.Windows.Forms/FolderBrowserDialog.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Prompts the user to select a folder. This class cannot be inherited.</summary>
@@ -325,14 +321,6 @@ This class provides a way to prompt the user to browse, create, and eventually s
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/FontDialog.xml b/xml/System.Windows.Forms/FontDialog.xml
index 3c9bace96ac..633b31f5228 100644
--- a/xml/System.Windows.Forms/FontDialog.xml
+++ b/xml/System.Windows.Forms/FontDialog.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Prompts the user to choose a font from among those installed on the local computer.</summary>
@@ -297,14 +293,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/Form+ControlCollection.xml b/xml/System.Windows.Forms/Form+ControlCollection.xml
index 3af9f37f0dc..c42c86e3abb 100644
--- a/xml/System.Windows.Forms/Form+ControlCollection.xml
+++ b/xml/System.Windows.Forms/Form+ControlCollection.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of controls on the form.</summary>
@@ -120,12 +116,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -176,12 +166,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/Form.xml b/xml/System.Windows.Forms/Form.xml
index a729255ca81..0bddd5f1ce5 100644
--- a/xml/System.Windows.Forms/Form.xml
+++ b/xml/System.Windows.Forms/Form.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a window or dialog box that makes up an application's user interface.</summary>
@@ -1571,12 +1567,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -1611,10 +1601,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Control+ControlCollection</ReturnType>
@@ -1687,10 +1673,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.CreateParams</ReturnType>
@@ -2629,10 +2611,6 @@
           <AttributeName Language="C#">[System.Obsolete("This method has been deprecated. Use the AutoScaleDimensions property instead.  https://go.microsoft.com/fwlink/?linkid=14202")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This method has been deprecated. Use the AutoScaleDimensions property instead.  https://go.microsoft.com/fwlink/?linkid=14202")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.SizeF</ReturnType>
@@ -3809,10 +3787,6 @@ To display a Help button, the value of the form's <xref:System.Windows.Forms.For
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Form[]</ReturnType>
@@ -4412,10 +4386,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4461,12 +4431,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4509,12 +4473,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4563,10 +4521,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4634,10 +4588,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4749,10 +4699,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4810,10 +4756,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4850,10 +4792,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4895,10 +4833,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4948,10 +4882,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4983,10 +4913,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.Experimental("WFO5001", UrlFormat="https://aka.ms/winforms-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.Experimental("WFO5001", UrlFormat="https://aka.ms/winforms-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5017,10 +4943,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.Experimental("WFO5001", UrlFormat="https://aka.ms/winforms-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.Experimental("WFO5001", UrlFormat="https://aka.ms/winforms-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5053,10 +4975,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.Experimental("WFO5001", UrlFormat="https://aka.ms/winforms-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.Experimental("WFO5001", UrlFormat="https://aka.ms/winforms-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5095,10 +5013,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5154,10 +5068,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5205,10 +5115,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.Experimental("WFO5001", UrlFormat="https://aka.ms/winforms-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.Experimental("WFO5001", UrlFormat="https://aka.ms/winforms-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5283,12 +5189,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5325,10 +5225,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5367,10 +5263,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5408,10 +5300,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5464,10 +5352,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5519,10 +5403,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5568,12 +5448,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5610,10 +5484,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5665,10 +5535,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5721,10 +5587,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5777,10 +5639,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5832,10 +5690,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5887,10 +5741,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5942,10 +5792,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5997,10 +5843,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -6039,10 +5881,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -6080,10 +5918,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -6138,10 +5972,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -6196,10 +6026,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -6255,10 +6081,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -6316,10 +6138,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -6358,10 +6176,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -6400,10 +6214,6 @@ By default Windows Forms anchors MDI children to the bottom left of the parent f
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -6527,10 +6337,6 @@ This example assumes that the `CreateMyOpaqueForm` method is called from another
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Form[]</ReturnType>
@@ -7643,10 +7449,6 @@ This example assumes that the `CreateMyOpaqueForm` method is called from another
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.Experimental("WFO5002", UrlFormat="https://aka.ms/winforms-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.Experimental("WFO5002", UrlFormat="https://aka.ms/winforms-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
@@ -7884,10 +7686,6 @@ This example assumes that the `CreateMyOpaqueForm` method is called from another
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.Experimental("WFO5002", UrlFormat="https://aka.ms/winforms-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.Experimental("WFO5002", UrlFormat="https://aka.ms/winforms-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Windows.Forms.DialogResult&gt;</ReturnType>
@@ -7940,10 +7738,6 @@ This example assumes that the `CreateMyOpaqueForm` method is called from another
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.Experimental("WFO5002", UrlFormat="https://aka.ms/winforms-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.Experimental("WFO5002", UrlFormat="https://aka.ms/winforms-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task&lt;System.Windows.Forms.DialogResult&gt;</ReturnType>
@@ -8561,14 +8355,6 @@ This example assumes that the `CreateMyOpaqueForm` method is called from another
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -8712,12 +8498,6 @@ This example assumes that the `CreateMyOpaqueForm` method is called from another
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/FormCollection.xml b/xml/System.Windows.Forms/FormCollection.xml
index 703945c8e52..d513f0a12c7 100644
--- a/xml/System.Windows.Forms/FormCollection.xml
+++ b/xml/System.Windows.Forms/FormCollection.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Windows.Forms.Form" /> objects.</summary>
@@ -104,10 +100,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Form</ReturnType>
@@ -146,10 +138,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Form</ReturnType>
diff --git a/xml/System.Windows.Forms/GiveFeedbackEventArgs.xml b/xml/System.Windows.Forms/GiveFeedbackEventArgs.xml
index a8fc3369d78..a7a9ff7be61 100644
--- a/xml/System.Windows.Forms/GiveFeedbackEventArgs.xml
+++ b/xml/System.Windows.Forms/GiveFeedbackEventArgs.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.Control.GiveFeedback" /> event, which occurs during a drag operation.</summary>
diff --git a/xml/System.Windows.Forms/GridItem.xml b/xml/System.Windows.Forms/GridItem.xml
index 93ce05b7af1..64ecc912a72 100644
--- a/xml/System.Windows.Forms/GridItem.xml
+++ b/xml/System.Windows.Forms/GridItem.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Implements one row in a <see cref="T:System.Windows.Forms.PropertyGrid" />.</summary>
@@ -164,10 +160,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.GridItemCollection</ReturnType>
diff --git a/xml/System.Windows.Forms/GridItemCollection.xml b/xml/System.Windows.Forms/GridItemCollection.xml
index 00e02091ea6..b9a09121d75 100644
--- a/xml/System.Windows.Forms/GridItemCollection.xml
+++ b/xml/System.Windows.Forms/GridItemCollection.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains a collection of <see cref="T:System.Windows.Forms.GridItem" /> objects.</summary>
diff --git a/xml/System.Windows.Forms/GroupBox.xml b/xml/System.Windows.Forms/GroupBox.xml
index df9178015a2..18cc36a6167 100644
--- a/xml/System.Windows.Forms/GroupBox.xml
+++ b/xml/System.Windows.Forms/GroupBox.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Windows control that displays a frame around a group of controls with an optional caption.</summary>
@@ -361,12 +357,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -413,10 +403,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.CreateParams</ReturnType>
@@ -1030,12 +1016,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1068,12 +1048,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1276,14 +1250,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1314,12 +1280,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/GroupBoxRenderer.xml b/xml/System.Windows.Forms/GroupBoxRenderer.xml
index aaa7506a33e..8035c6dfc0d 100644
--- a/xml/System.Windows.Forms/GroupBoxRenderer.xml
+++ b/xml/System.Windows.Forms/GroupBoxRenderer.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods used to render a group box control with or without visual styles. This class cannot be inherited.</summary>
@@ -89,12 +85,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -386,12 +376,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/HScrollBar.xml b/xml/System.Windows.Forms/HScrollBar.xml
index 3f1197a80f6..6a1e8f61744 100644
--- a/xml/System.Windows.Forms/HScrollBar.xml
+++ b/xml/System.Windows.Forms/HScrollBar.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a standard Windows horizontal scroll bar.</summary>
diff --git a/xml/System.Windows.Forms/HScrollProperties.xml b/xml/System.Windows.Forms/HScrollProperties.xml
index 971a06211c0..517c769e6f1 100644
--- a/xml/System.Windows.Forms/HScrollProperties.xml
+++ b/xml/System.Windows.Forms/HScrollProperties.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides basic properties for the <see cref="T:System.Windows.Forms.HScrollBar" />.</summary>
@@ -58,10 +54,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="container" Type="System.Windows.Forms.ScrollableControl" />
diff --git a/xml/System.Windows.Forms/Help.xml b/xml/System.Windows.Forms/Help.xml
index 1172db87602..a08ff5db13c 100644
--- a/xml/System.Windows.Forms/Help.xml
+++ b/xml/System.Windows.Forms/Help.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates the HTML Help 1.0 engine.</summary>
@@ -397,12 +393,6 @@ Compiled Help files provide table-of-contents, index, search, and keyword links
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/HelpProvider.xml b/xml/System.Windows.Forms/HelpProvider.xml
index a5e0239da40..3fc1a8169b4 100644
--- a/xml/System.Windows.Forms/HelpProvider.xml
+++ b/xml/System.Windows.Forms/HelpProvider.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides pop-up or online Help for controls.</summary>
@@ -145,12 +141,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -430,14 +420,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -772,14 +754,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Windows.Forms/HtmlDocument.xml b/xml/System.Windows.Forms/HtmlDocument.xml
index 1f0bb7f20f1..9e1b9bf69c1 100644
--- a/xml/System.Windows.Forms/HtmlDocument.xml
+++ b/xml/System.Windows.Forms/HtmlDocument.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides top-level programmatic access to an HTML document hosted by the <see cref="T:System.Windows.Forms.WebBrowser" /> control.</summary>
@@ -106,10 +102,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElement</ReturnType>
@@ -322,10 +314,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElement</ReturnType>
@@ -382,14 +370,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElementEventHandler</ReturnType>
@@ -439,14 +419,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElementEventHandler</ReturnType>
@@ -781,12 +753,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -943,14 +909,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElementEventHandler</ReturnType>
@@ -1131,12 +1089,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElement</ReturnType>
       </ReturnValue>
@@ -1576,14 +1528,6 @@ window.alert("Name is " + name + "; address is " + address);
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElementEventHandler</ReturnType>
@@ -1635,14 +1579,6 @@ window.alert("Name is " + name + "; address is " + address);
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElementEventHandler</ReturnType>
@@ -1696,14 +1632,6 @@ window.alert("Name is " + name + "; address is " + address);
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElementEventHandler</ReturnType>
@@ -1755,14 +1683,6 @@ window.alert("Name is " + name + "; address is " + address);
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElementEventHandler</ReturnType>
@@ -1814,14 +1734,6 @@ window.alert("Name is " + name + "; address is " + address);
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElementEventHandler</ReturnType>
@@ -1873,14 +1785,6 @@ window.alert("Name is " + name + "; address is " + address);
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElementEventHandler</ReturnType>
@@ -1927,12 +1831,6 @@ window.alert("Name is " + name + "; address is " + address);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1970,12 +1868,6 @@ window.alert("Name is " + name + "; address is " + address);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2011,12 +1903,6 @@ window.alert("Name is " + name + "; address is " + address);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlDocument</ReturnType>
       </ReturnValue>
@@ -2110,14 +1996,6 @@ window.alert("Name is " + name + "; address is " + address);
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElementEventHandler</ReturnType>
@@ -2214,10 +2092,6 @@ window.alert("Name is " + name + "; address is " + address);
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Uri</ReturnType>
@@ -2297,10 +2171,6 @@ window.alert("Name is " + name + "; address is " + address);
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlWindow</ReturnType>
diff --git a/xml/System.Windows.Forms/HtmlElement.xml b/xml/System.Windows.Forms/HtmlElement.xml
index bd0b19c2e46..e37956df030 100644
--- a/xml/System.Windows.Forms/HtmlElement.xml
+++ b/xml/System.Windows.Forms/HtmlElement.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an HTML element inside of a Web page.</summary>
@@ -84,10 +80,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElementCollection</ReturnType>
@@ -132,10 +124,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElement</ReturnType>
@@ -189,12 +177,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -287,10 +269,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElementCollection</ReturnType>
@@ -453,12 +431,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -537,10 +509,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1010,12 +978,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1065,12 +1027,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElementCollection</ReturnType>
       </ReturnValue>
@@ -1194,14 +1150,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1245,14 +1193,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1309,14 +1249,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1366,12 +1298,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElement</ReturnType>
       </ReturnValue>
@@ -1438,10 +1364,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1482,12 +1404,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -2061,14 +1977,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2378,14 +2286,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2480,14 +2380,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2574,12 +2466,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2805,12 +2691,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2870,14 +2750,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2963,10 +2835,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/HtmlElementCollection.xml b/xml/System.Windows.Forms/HtmlElementCollection.xml
index 2c5eef77411..69ef911f99c 100644
--- a/xml/System.Windows.Forms/HtmlElementCollection.xml
+++ b/xml/System.Windows.Forms/HtmlElementCollection.xml
@@ -31,10 +31,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines a collection of <see cref="T:System.Windows.Forms.HtmlElement" /> objects.</summary>
@@ -209,10 +205,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElement</ReturnType>
diff --git a/xml/System.Windows.Forms/HtmlElementErrorEventArgs.xml b/xml/System.Windows.Forms/HtmlElementErrorEventArgs.xml
index a56dbaa292f..3ebc64307eb 100644
--- a/xml/System.Windows.Forms/HtmlElementErrorEventArgs.xml
+++ b/xml/System.Windows.Forms/HtmlElementErrorEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.HtmlWindow.Error" /> event.</summary>
diff --git a/xml/System.Windows.Forms/HtmlElementEventArgs.xml b/xml/System.Windows.Forms/HtmlElementEventArgs.xml
index 6e8efa9799e..a61a98ce5b0 100644
--- a/xml/System.Windows.Forms/HtmlElementEventArgs.xml
+++ b/xml/System.Windows.Forms/HtmlElementEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the events defined on <see cref="T:System.Windows.Forms.HtmlDocument" /> and <see cref="T:System.Windows.Forms.HtmlElement" />.</summary>
@@ -324,10 +320,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElement</ReturnType>
@@ -670,10 +662,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlElement</ReturnType>
diff --git a/xml/System.Windows.Forms/HtmlHistory.xml b/xml/System.Windows.Forms/HtmlHistory.xml
index 872baa00f7c..23fdca3e7ee 100644
--- a/xml/System.Windows.Forms/HtmlHistory.xml
+++ b/xml/System.Windows.Forms/HtmlHistory.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Manages the list of documents and Web sites the user has visited within the current session.</summary>
diff --git a/xml/System.Windows.Forms/HtmlWindow.xml b/xml/System.Windows.Forms/HtmlWindow.xml
index d452e4a0296..652b1274e4b 100644
--- a/xml/System.Windows.Forms/HtmlWindow.xml
+++ b/xml/System.Windows.Forms/HtmlWindow.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the logical window that contains one or more instances of <see cref="T:System.Windows.Forms.HtmlDocument" />.</summary>
@@ -75,12 +71,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -119,12 +109,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -208,12 +192,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -283,12 +261,6 @@ The following example displays a <xref:System.Windows.Forms.HtmlWindow.Confirm%2
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -374,10 +346,6 @@ The following example displays a <xref:System.Windows.Forms.HtmlWindow.Confirm%2
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -928,14 +896,6 @@ The following example displays a <xref:System.Windows.Forms.HtmlWindow.Confirm%2
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -974,12 +934,6 @@ The following example displays a <xref:System.Windows.Forms.HtmlWindow.Confirm%2
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1018,12 +972,6 @@ The following example displays a <xref:System.Windows.Forms.HtmlWindow.Confirm%2
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1141,12 +1089,6 @@ The following example displays a <xref:System.Windows.Forms.HtmlWindow.Confirm%2
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlWindow</ReturnType>
       </ReturnValue>
@@ -1241,12 +1183,6 @@ The following example displays a <xref:System.Windows.Forms.HtmlWindow.Confirm%2
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlWindow</ReturnType>
       </ReturnValue>
@@ -1390,12 +1326,6 @@ The following example displays a <xref:System.Windows.Forms.HtmlWindow.Confirm%2
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlWindow</ReturnType>
       </ReturnValue>
@@ -1441,12 +1371,6 @@ The following example displays a <xref:System.Windows.Forms.HtmlWindow.Confirm%2
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlWindow</ReturnType>
       </ReturnValue>
@@ -1574,12 +1498,6 @@ The following example displays a <xref:System.Windows.Forms.HtmlWindow.Confirm%2
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1946,14 +1864,6 @@ The following example displays a <xref:System.Windows.Forms.HtmlWindow.Confirm%2
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/HtmlWindowCollection.xml b/xml/System.Windows.Forms/HtmlWindowCollection.xml
index 7ac52b13e8b..829802e1739 100644
--- a/xml/System.Windows.Forms/HtmlWindowCollection.xml
+++ b/xml/System.Windows.Forms/HtmlWindowCollection.xml
@@ -31,10 +31,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the windows contained within another <see cref="T:System.Windows.Forms.HtmlWindow" />.</summary>
@@ -167,10 +163,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.HtmlWindow</ReturnType>
diff --git a/xml/System.Windows.Forms/IBindableComponent.xml b/xml/System.Windows.Forms/IBindableComponent.xml
index 08b1b39b726..1e9083aca06 100644
--- a/xml/System.Windows.Forms/IBindableComponent.xml
+++ b/xml/System.Windows.Forms/IBindableComponent.xml
@@ -24,16 +24,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Enables a non-control component to emulate the data-binding behavior of a Windows Forms control.</summary>
     <remarks>
@@ -74,14 +64,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.BindingContext</ReturnType>
@@ -115,10 +97,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ControlBindingsCollection</ReturnType>
diff --git a/xml/System.Windows.Forms/IComponentEditorPageSite.xml b/xml/System.Windows.Forms/IComponentEditorPageSite.xml
index 172b81f34e1..ac9d0397f16 100644
--- a/xml/System.Windows.Forms/IComponentEditorPageSite.xml
+++ b/xml/System.Windows.Forms/IComponentEditorPageSite.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>The site for a <see cref="T:System.Windows.Forms.Design.ComponentEditorPage" />.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Windows.Forms/IContainerControl.xml b/xml/System.Windows.Forms/IContainerControl.xml
index c4b5c0a6b8c..e12e08848d6 100644
--- a/xml/System.Windows.Forms/IContainerControl.xml
+++ b/xml/System.Windows.Forms/IContainerControl.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides the functionality for a control to act as a parent for other controls.</summary>
     <remarks>
@@ -66,12 +60,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ICurrencyManagerProvider.xml b/xml/System.Windows.Forms/ICurrencyManagerProvider.xml
index 3d14fe6a83a..5e54d425abf 100644
--- a/xml/System.Windows.Forms/ICurrencyManagerProvider.xml
+++ b/xml/System.Windows.Forms/ICurrencyManagerProvider.xml
@@ -17,12 +17,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides custom binding management for components.</summary>
     <remarks>
diff --git a/xml/System.Windows.Forms/IDataGridColumnStyleEditingNotificationService.xml b/xml/System.Windows.Forms/IDataGridColumnStyleEditingNotificationService.xml
index df080b74b2c..e8013c8b872 100644
--- a/xml/System.Windows.Forms/IDataGridColumnStyleEditingNotificationService.xml
+++ b/xml/System.Windows.Forms/IDataGridColumnStyleEditingNotificationService.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an editing notification interface.</summary>
     <remarks>
diff --git a/xml/System.Windows.Forms/IDataGridViewEditingCell.xml b/xml/System.Windows.Forms/IDataGridViewEditingCell.xml
index 8e7b2169251..785748e4f82 100644
--- a/xml/System.Windows.Forms/IDataGridViewEditingCell.xml
+++ b/xml/System.Windows.Forms/IDataGridViewEditingCell.xml
@@ -17,16 +17,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Defines common functionality for a cell that allows the manipulation of its value.</summary>
     <remarks>
diff --git a/xml/System.Windows.Forms/IDataGridViewEditingControl.xml b/xml/System.Windows.Forms/IDataGridViewEditingControl.xml
index b8115c8a485..f8212b343ea 100644
--- a/xml/System.Windows.Forms/IDataGridViewEditingControl.xml
+++ b/xml/System.Windows.Forms/IDataGridViewEditingControl.xml
@@ -17,12 +17,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Defines common functionality for controls that are hosted within cells of a <see cref="T:System.Windows.Forms.DataGridView" />.</summary>
     <remarks>
@@ -139,14 +133,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DataGridView</ReturnType>
diff --git a/xml/System.Windows.Forms/IDataObject.xml b/xml/System.Windows.Forms/IDataObject.xml
index 66a08e916cc..848ad6ea4cf 100644
--- a/xml/System.Windows.Forms/IDataObject.xml
+++ b/xml/System.Windows.Forms/IDataObject.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a format-independent mechanism for transferring data.</summary>
@@ -599,12 +595,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/IDropTarget.xml b/xml/System.Windows.Forms/IDropTarget.xml
index 045314fb6c0..8a0d6310c2a 100644
--- a/xml/System.Windows.Forms/IDropTarget.xml
+++ b/xml/System.Windows.Forms/IDropTarget.xml
@@ -17,12 +17,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Defines mouse events.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Windows.Forms/IFeatureSupport.xml b/xml/System.Windows.Forms/IFeatureSupport.xml
index 4b21764724f..1687697e5e6 100644
--- a/xml/System.Windows.Forms/IFeatureSupport.xml
+++ b/xml/System.Windows.Forms/IFeatureSupport.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Specifies a standard interface for retrieving feature information from the current system.</summary>
     <remarks>
diff --git a/xml/System.Windows.Forms/IFileReaderService.xml b/xml/System.Windows.Forms/IFileReaderService.xml
index 6410471789c..acdcff6504c 100644
--- a/xml/System.Windows.Forms/IFileReaderService.xml
+++ b/xml/System.Windows.Forms/IFileReaderService.xml
@@ -18,12 +18,6 @@
     <AssemblyVersion>9.0.0.0</AssemblyVersion>
   </AssemblyInfo>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Defines a method that opens a file from the current directory.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Windows.Forms/ImageIndexConverter.xml b/xml/System.Windows.Forms/ImageIndexConverter.xml
index f9560c46d02..c837ba8f6e4 100644
--- a/xml/System.Windows.Forms/ImageIndexConverter.xml
+++ b/xml/System.Windows.Forms/ImageIndexConverter.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert data for an image index to and from a string.</summary>
@@ -99,12 +95,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -160,12 +150,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -278,12 +262,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -331,12 +309,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ImageKeyConverter.xml b/xml/System.Windows.Forms/ImageKeyConverter.xml
index 987a4d12e88..16fb6c44256 100644
--- a/xml/System.Windows.Forms/ImageKeyConverter.xml
+++ b/xml/System.Windows.Forms/ImageKeyConverter.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert data for an image key to and from another data type.</summary>
@@ -130,12 +126,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -180,12 +170,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -280,12 +264,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -330,12 +308,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ImageList+ImageCollection.xml b/xml/System.Windows.Forms/ImageList+ImageCollection.xml
index f1b36b9d080..35f1249928e 100644
--- a/xml/System.Windows.Forms/ImageList+ImageCollection.xml
+++ b/xml/System.Windows.Forms/ImageList+ImageCollection.xml
@@ -1203,12 +1203,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1254,12 +1248,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1306,12 +1294,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1352,12 +1334,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1450,14 +1426,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1503,12 +1471,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ImageList.xml b/xml/System.Windows.Forms/ImageList.xml
index 459d5d34cde..b6cdc8880f3 100644
--- a/xml/System.Windows.Forms/ImageList.xml
+++ b/xml/System.Windows.Forms/ImageList.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods to manage a collection of <see cref="T:System.Drawing.Image" /> objects. This class cannot be inherited.</summary>
@@ -668,14 +664,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ImageListStreamer</ReturnType>
@@ -729,14 +717,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -809,14 +789,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Windows.Forms/ImageListStreamer.xml b/xml/System.Windows.Forms/ImageListStreamer.xml
index 9b0bb8ce3d1..707baeb3889 100644
--- a/xml/System.Windows.Forms/ImageListStreamer.xml
+++ b/xml/System.Windows.Forms/ImageListStreamer.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the data portion of an <see cref="T:System.Windows.Forms.ImageList" />.</summary>
diff --git a/xml/System.Windows.Forms/ImeModeConversion.xml b/xml/System.Windows.Forms/ImeModeConversion.xml
index d3389d904b4..b8dfc2ebdf4 100644
--- a/xml/System.Windows.Forms/ImeModeConversion.xml
+++ b/xml/System.Windows.Forms/ImeModeConversion.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Helper class that provides information about the IME conversion mode.</summary>
diff --git a/xml/System.Windows.Forms/InputLanguage.xml b/xml/System.Windows.Forms/InputLanguage.xml
index e26efd5a3bd..76b87914b04 100644
--- a/xml/System.Windows.Forms/InputLanguage.xml
+++ b/xml/System.Windows.Forms/InputLanguage.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods and fields to manage the input language. This class cannot be inherited.</summary>
@@ -205,12 +201,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/InputLanguageChangedEventArgs.xml b/xml/System.Windows.Forms/InputLanguageChangedEventArgs.xml
index bf89a273d99..374bea5f800 100644
--- a/xml/System.Windows.Forms/InputLanguageChangedEventArgs.xml
+++ b/xml/System.Windows.Forms/InputLanguageChangedEventArgs.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.Form.InputLanguageChanged" /> event.</summary>
diff --git a/xml/System.Windows.Forms/InputLanguageChangingEventArgs.xml b/xml/System.Windows.Forms/InputLanguageChangingEventArgs.xml
index fc3a957aaab..b69426e7d5b 100644
--- a/xml/System.Windows.Forms/InputLanguageChangingEventArgs.xml
+++ b/xml/System.Windows.Forms/InputLanguageChangingEventArgs.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.Form.InputLanguageChanging" /> event.</summary>
diff --git a/xml/System.Windows.Forms/InputLanguageCollection.xml b/xml/System.Windows.Forms/InputLanguageCollection.xml
index 1ae3a1243c0..7c08bf87ca2 100644
--- a/xml/System.Windows.Forms/InputLanguageCollection.xml
+++ b/xml/System.Windows.Forms/InputLanguageCollection.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Stores <see cref="T:System.Windows.Forms.InputLanguage" /> objects.</summary>
@@ -64,12 +60,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -149,12 +139,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ItemCheckedEventArgs.xml b/xml/System.Windows.Forms/ItemCheckedEventArgs.xml
index d1b89b4bcdc..798a1dfc8e7 100644
--- a/xml/System.Windows.Forms/ItemCheckedEventArgs.xml
+++ b/xml/System.Windows.Forms/ItemCheckedEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.ListView.ItemChecked" /> event of the <see cref="T:System.Windows.Forms.ListView" /> control.</summary>
diff --git a/xml/System.Windows.Forms/ItemDragEventArgs.xml b/xml/System.Windows.Forms/ItemDragEventArgs.xml
index 16915179334..1e02c91894c 100644
--- a/xml/System.Windows.Forms/ItemDragEventArgs.xml
+++ b/xml/System.Windows.Forms/ItemDragEventArgs.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.ListView.ItemDrag" /> event of the <see cref="T:System.Windows.Forms.ListView" /> and <see cref="T:System.Windows.Forms.TreeView" /> controls.</summary>
diff --git a/xml/System.Windows.Forms/KeysConverter.xml b/xml/System.Windows.Forms/KeysConverter.xml
index a7a620f2fdc..9a87ff134eb 100644
--- a/xml/System.Windows.Forms/KeysConverter.xml
+++ b/xml/System.Windows.Forms/KeysConverter.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a <see cref="T:System.ComponentModel.TypeConverter" /> to convert <see cref="T:System.Windows.Forms.Keys" /> objects to and from other representations.</summary>
@@ -173,12 +169,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -232,12 +222,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -299,12 +283,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -366,12 +344,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -483,12 +455,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -534,12 +500,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/Label.xml b/xml/System.Windows.Forms/Label.xml
index 0e9d8db69c9..20d955d7c4f 100644
--- a/xml/System.Windows.Forms/Label.xml
+++ b/xml/System.Windows.Forms/Label.xml
@@ -70,10 +70,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a standard Windows label.</summary>
@@ -587,12 +583,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Rectangle</ReturnType>
       </ReturnValue>
@@ -639,12 +629,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -679,10 +663,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.CreateParams</ReturnType>
@@ -843,12 +823,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1588,12 +1562,6 @@ If you set the <xref:System.Windows.Forms.Label.ImageKey%2A> property, the <xref
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1625,12 +1593,6 @@ If you set the <xref:System.Windows.Forms.Label.ImageKey%2A> property, the <xref
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1661,12 +1623,6 @@ If you set the <xref:System.Windows.Forms.Label.ImageKey%2A> property, the <xref
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1709,12 +1665,6 @@ If you set the <xref:System.Windows.Forms.Label.ImageKey%2A> property, the <xref
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1745,12 +1695,6 @@ If you set the <xref:System.Windows.Forms.Label.ImageKey%2A> property, the <xref
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1781,12 +1725,6 @@ If you set the <xref:System.Windows.Forms.Label.ImageKey%2A> property, the <xref
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1818,12 +1756,6 @@ If you set the <xref:System.Windows.Forms.Label.ImageKey%2A> property, the <xref
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1855,12 +1787,6 @@ If you set the <xref:System.Windows.Forms.Label.ImageKey%2A> property, the <xref
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1891,12 +1817,6 @@ If you set the <xref:System.Windows.Forms.Label.ImageKey%2A> property, the <xref
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1940,12 +1860,6 @@ If you set the <xref:System.Windows.Forms.Label.ImageKey%2A> property, the <xref
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1989,12 +1903,6 @@ If you set the <xref:System.Windows.Forms.Label.ImageKey%2A> property, the <xref
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2026,12 +1934,6 @@ If you set the <xref:System.Windows.Forms.Label.ImageKey%2A> property, the <xref
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2455,14 +2357,6 @@ If you set the <xref:System.Windows.Forms.Label.ImageKey%2A> property, the <xref
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2586,12 +2480,6 @@ If you set the <xref:System.Windows.Forms.Label.ImageKey%2A> property, the <xref
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/LabelEditEventArgs.xml b/xml/System.Windows.Forms/LabelEditEventArgs.xml
index fd06fe29c40..9911e13883f 100644
--- a/xml/System.Windows.Forms/LabelEditEventArgs.xml
+++ b/xml/System.Windows.Forms/LabelEditEventArgs.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.ListView.BeforeLabelEdit" /> and <see cref="E:System.Windows.Forms.ListView.AfterLabelEdit" /> events.</summary>
diff --git a/xml/System.Windows.Forms/LayoutEventArgs.xml b/xml/System.Windows.Forms/LayoutEventArgs.xml
index 5b0684b26b9..aa53ac67dd4 100644
--- a/xml/System.Windows.Forms/LayoutEventArgs.xml
+++ b/xml/System.Windows.Forms/LayoutEventArgs.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.Control.Layout" /> event. This class cannot be inherited.</summary>
diff --git a/xml/System.Windows.Forms/LayoutSettings.xml b/xml/System.Windows.Forms/LayoutSettings.xml
index 1f84f47b1a1..6ebc11d5958 100644
--- a/xml/System.Windows.Forms/LayoutSettings.xml
+++ b/xml/System.Windows.Forms/LayoutSettings.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a base class for collecting layout scheme characteristics.</summary>
diff --git a/xml/System.Windows.Forms/LinkArea+LinkAreaConverter.xml b/xml/System.Windows.Forms/LinkArea+LinkAreaConverter.xml
index b7680c51e76..855e87e70f7 100644
--- a/xml/System.Windows.Forms/LinkArea+LinkAreaConverter.xml
+++ b/xml/System.Windows.Forms/LinkArea+LinkAreaConverter.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.Windows.Forms.LinkArea.LinkAreaConverter" /> objects to and from various other representations.</summary>
@@ -97,12 +93,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -283,12 +273,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -369,10 +353,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
diff --git a/xml/System.Windows.Forms/LinkArea.xml b/xml/System.Windows.Forms/LinkArea.xml
index 0098cbd8284..bee040e8dfe 100644
--- a/xml/System.Windows.Forms/LinkArea.xml
+++ b/xml/System.Windows.Forms/LinkArea.xml
@@ -126,10 +126,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -464,10 +460,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/LinkClickedEventArgs.xml b/xml/System.Windows.Forms/LinkClickedEventArgs.xml
index caff44d51b0..c9af626e492 100644
--- a/xml/System.Windows.Forms/LinkClickedEventArgs.xml
+++ b/xml/System.Windows.Forms/LinkClickedEventArgs.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.RichTextBox.LinkClicked" /> event.</summary>
diff --git a/xml/System.Windows.Forms/LinkConverter.xml b/xml/System.Windows.Forms/LinkConverter.xml
index abeeae4b413..45aac17137c 100644
--- a/xml/System.Windows.Forms/LinkConverter.xml
+++ b/xml/System.Windows.Forms/LinkConverter.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter for <see cref="T:System.Windows.Forms.LinkLabel.Link" /> objects.</summary>
@@ -93,12 +89,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/LinkLabel+Link.xml b/xml/System.Windows.Forms/LinkLabel+Link.xml
index 6e86d46999f..e5cac486d86 100644
--- a/xml/System.Windows.Forms/LinkLabel+Link.xml
+++ b/xml/System.Windows.Forms/LinkLabel+Link.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a link within a <see cref="T:System.Windows.Forms.LinkLabel" /> control.</summary>
@@ -361,14 +357,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/LinkLabel+LinkCollection.xml b/xml/System.Windows.Forms/LinkLabel+LinkCollection.xml
index de9418f83d9..cabe632ac64 100644
--- a/xml/System.Windows.Forms/LinkLabel+LinkCollection.xml
+++ b/xml/System.Windows.Forms/LinkLabel+LinkCollection.xml
@@ -341,12 +341,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -511,12 +505,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -813,12 +801,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -979,12 +961,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1032,12 +1008,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1088,12 +1058,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1139,12 +1103,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1235,14 +1193,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1287,12 +1237,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/LinkLabel.xml b/xml/System.Windows.Forms/LinkLabel.xml
index 822b11e5c8c..26e29393ca0 100644
--- a/xml/System.Windows.Forms/LinkLabel.xml
+++ b/xml/System.Windows.Forms/LinkLabel.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Windows label control that can display hyperlinks.</summary>
@@ -537,14 +533,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.LinkLabelLinkClickedEventHandler</ReturnType>
@@ -1429,14 +1417,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Cursor</ReturnType>
@@ -1501,12 +1481,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.LinkLabel+Link</ReturnType>
       </ReturnValue>
@@ -1845,14 +1819,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/LinkLabelLinkClickedEventArgs.xml b/xml/System.Windows.Forms/LinkLabelLinkClickedEventArgs.xml
index 7071455044d..725d2ffa8a7 100644
--- a/xml/System.Windows.Forms/LinkLabelLinkClickedEventArgs.xml
+++ b/xml/System.Windows.Forms/LinkLabelLinkClickedEventArgs.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.LinkLabel.LinkClicked" /> event.</summary>
diff --git a/xml/System.Windows.Forms/ListBindingConverter.xml b/xml/System.Windows.Forms/ListBindingConverter.xml
index 8df54553a64..f80e5185dd0 100644
--- a/xml/System.Windows.Forms/ListBindingConverter.xml
+++ b/xml/System.Windows.Forms/ListBindingConverter.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.Windows.Forms.Binding" /> objects to and from various other representations.</summary>
@@ -100,12 +96,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -144,12 +134,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -240,12 +224,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ListBindingHelper.xml b/xml/System.Windows.Forms/ListBindingHelper.xml
index 466b700f485..63271ca6815 100644
--- a/xml/System.Windows.Forms/ListBindingHelper.xml
+++ b/xml/System.Windows.Forms/ListBindingHelper.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides functionality to discover a bindable list and the properties of the items contained in the list when they differ from the public properties of the object to which they bind.</summary>
@@ -71,12 +67,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -116,12 +106,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -286,12 +270,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
       </ReturnValue>
@@ -355,12 +333,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
       </ReturnValue>
@@ -401,12 +373,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ListBox+IntegerCollection.xml b/xml/System.Windows.Forms/ListBox+IntegerCollection.xml
index 4e5504f1951..530550f1ad9 100644
--- a/xml/System.Windows.Forms/ListBox+IntegerCollection.xml
+++ b/xml/System.Windows.Forms/ListBox+IntegerCollection.xml
@@ -672,12 +672,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -768,12 +762,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -817,12 +805,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -865,12 +847,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -996,14 +972,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1048,12 +1016,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ListBox+ObjectCollection.xml b/xml/System.Windows.Forms/ListBox+ObjectCollection.xml
index 68042840cc7..bfca9ad261b 100644
--- a/xml/System.Windows.Forms/ListBox+ObjectCollection.xml
+++ b/xml/System.Windows.Forms/ListBox+ObjectCollection.xml
@@ -1009,10 +1009,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
@@ -1058,12 +1054,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1097,12 +1087,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1135,12 +1119,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1217,14 +1195,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1258,12 +1228,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ListBox+SelectedIndexCollection.xml b/xml/System.Windows.Forms/ListBox+SelectedIndexCollection.xml
index 4e47c09a0ad..7015c547277 100644
--- a/xml/System.Windows.Forms/ListBox+SelectedIndexCollection.xml
+++ b/xml/System.Windows.Forms/ListBox+SelectedIndexCollection.xml
@@ -598,12 +598,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -687,12 +681,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -740,12 +728,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -792,12 +774,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -888,14 +864,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -940,12 +908,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ListBox+SelectedObjectCollection.xml b/xml/System.Windows.Forms/ListBox+SelectedObjectCollection.xml
index 3156fad5b93..81684d77d5c 100644
--- a/xml/System.Windows.Forms/ListBox+SelectedObjectCollection.xml
+++ b/xml/System.Windows.Forms/ListBox+SelectedObjectCollection.xml
@@ -183,12 +183,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -354,12 +348,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -456,14 +444,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -614,12 +594,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -701,12 +675,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -789,12 +757,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ListBox.xml b/xml/System.Windows.Forms/ListBox.xml
index 13789f1b124..6e1e13b1dcf 100644
--- a/xml/System.Windows.Forms/ListBox.xml
+++ b/xml/System.Windows.Forms/ListBox.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Windows control to display a list of items.</summary>
@@ -293,14 +289,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Image</ReturnType>
@@ -351,14 +339,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -452,14 +432,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -651,14 +623,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -939,14 +903,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DrawItemEventHandler</ReturnType>
@@ -2004,14 +1960,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.MeasureItemEventHandler</ReturnType>
@@ -2076,14 +2024,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.MouseEventHandler</ReturnType>
@@ -2700,14 +2640,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -2757,14 +2689,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.PaintEventHandler</ReturnType>
@@ -3232,14 +3156,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -3366,14 +3282,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -3866,14 +3774,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/ListControl.xml b/xml/System.Windows.Forms/ListControl.xml
index f4881ddae98..5aa33adb621 100644
--- a/xml/System.Windows.Forms/ListControl.xml
+++ b/xml/System.Windows.Forms/ListControl.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a common implementation of members for the <see cref="T:System.Windows.Forms.ListBox" /> and <see cref="T:System.Windows.Forms.ComboBox" /> classes.</summary>
@@ -337,14 +333,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -691,14 +679,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -940,12 +920,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -978,12 +952,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1027,12 +995,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1075,12 +1037,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1123,12 +1079,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1171,12 +1121,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1219,12 +1163,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1268,12 +1206,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1315,12 +1247,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1362,12 +1288,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1612,12 +1532,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1651,12 +1565,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1709,14 +1617,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/ListControlConvertEventArgs.xml b/xml/System.Windows.Forms/ListControlConvertEventArgs.xml
index 782786d2d2e..953bb9d69a7 100644
--- a/xml/System.Windows.Forms/ListControlConvertEventArgs.xml
+++ b/xml/System.Windows.Forms/ListControlConvertEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.ListControl.Format" /> event.</summary>
diff --git a/xml/System.Windows.Forms/ListView+CheckedIndexCollection.xml b/xml/System.Windows.Forms/ListView+CheckedIndexCollection.xml
index fbe0a8e232c..f307beb2918 100644
--- a/xml/System.Windows.Forms/ListView+CheckedIndexCollection.xml
+++ b/xml/System.Windows.Forms/ListView+CheckedIndexCollection.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the collection containing the indexes to the checked items in a list view control.</summary>
@@ -499,12 +495,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -588,12 +578,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -631,12 +615,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -673,12 +651,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -767,14 +739,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -812,12 +776,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ListView+CheckedListViewItemCollection.xml b/xml/System.Windows.Forms/ListView+CheckedListViewItemCollection.xml
index 563980c2c66..70e0ecea4c7 100644
--- a/xml/System.Windows.Forms/ListView+CheckedListViewItemCollection.xml
+++ b/xml/System.Windows.Forms/ListView+CheckedListViewItemCollection.xml
@@ -91,12 +91,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="owner" Type="System.Windows.Forms.ListView" />
       </Parameters>
@@ -216,12 +210,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -309,12 +297,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IEnumerator</ReturnType>
       </ReturnValue>
@@ -344,12 +326,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -486,10 +462,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListViewItem</ReturnType>
@@ -619,10 +591,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Windows.Forms/ListView+ColumnHeaderCollection.xml b/xml/System.Windows.Forms/ListView+ColumnHeaderCollection.xml
index 6db15138edb..1abfdfd02f9 100644
--- a/xml/System.Windows.Forms/ListView+ColumnHeaderCollection.xml
+++ b/xml/System.Windows.Forms/ListView+ColumnHeaderCollection.xml
@@ -87,12 +87,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="owner" Type="System.Windows.Forms.ListView" />
       </Parameters>
@@ -137,12 +131,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ColumnHeader</ReturnType>
       </ReturnValue>
@@ -189,12 +177,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -247,12 +229,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ColumnHeader</ReturnType>
       </ReturnValue>
@@ -393,12 +369,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ColumnHeader</ReturnType>
       </ReturnValue>
@@ -528,12 +498,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ColumnHeader</ReturnType>
       </ReturnValue>
@@ -600,12 +564,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -824,12 +782,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IEnumerator</ReturnType>
       </ReturnValue>
@@ -991,12 +943,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1385,10 +1331,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ColumnHeader</ReturnType>
@@ -1470,12 +1412,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1603,12 +1539,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1688,10 +1618,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Windows.Forms/ListView+ListViewItemCollection.xml b/xml/System.Windows.Forms/ListView+ListViewItemCollection.xml
index a1840fef9aa..b02159d6b12 100644
--- a/xml/System.Windows.Forms/ListView+ListViewItemCollection.xml
+++ b/xml/System.Windows.Forms/ListView+ListViewItemCollection.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the collection of items in a <see cref="T:System.Windows.Forms.ListView" /> control or assigned to a <see cref="T:System.Windows.Forms.ListViewGroup" />.</summary>
@@ -292,12 +288,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListViewItem</ReturnType>
       </ReturnValue>
@@ -339,12 +329,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListViewItem</ReturnType>
       </ReturnValue>
@@ -391,12 +375,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListViewItem</ReturnType>
       </ReturnValue>
@@ -661,12 +639,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -916,12 +888,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1141,12 +1107,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListViewItem</ReturnType>
       </ReturnValue>
@@ -1184,12 +1144,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListViewItem</ReturnType>
       </ReturnValue>
@@ -1236,12 +1190,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListViewItem</ReturnType>
       </ReturnValue>
@@ -1630,12 +1578,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1679,12 +1621,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1722,12 +1658,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1764,12 +1694,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1862,14 +1786,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1915,12 +1831,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ListView+SelectedIndexCollection.xml b/xml/System.Windows.Forms/ListView+SelectedIndexCollection.xml
index 5e2bdbc5e45..638eb1282af 100644
--- a/xml/System.Windows.Forms/ListView+SelectedIndexCollection.xml
+++ b/xml/System.Windows.Forms/ListView+SelectedIndexCollection.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the collection that contains the indexes to the selected items in a <see cref="T:System.Windows.Forms.ListView" /> control.</summary>
@@ -627,12 +623,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -722,12 +712,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -765,12 +749,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -808,12 +786,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -902,14 +874,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -947,12 +911,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ListView+SelectedListViewItemCollection.xml b/xml/System.Windows.Forms/ListView+SelectedListViewItemCollection.xml
index 12df62836d0..b214c13a17c 100644
--- a/xml/System.Windows.Forms/ListView+SelectedListViewItemCollection.xml
+++ b/xml/System.Windows.Forms/ListView+SelectedListViewItemCollection.xml
@@ -103,12 +103,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="owner" Type="System.Windows.Forms.ListView" />
       </Parameters>
@@ -267,12 +261,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -360,12 +348,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IEnumerator</ReturnType>
       </ReturnValue>
@@ -530,10 +512,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListViewItem</ReturnType>
@@ -661,10 +639,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Windows.Forms/ListView.xml b/xml/System.Windows.Forms/ListView.xml
index 5a07fbdfa1c..764a96cc550 100644
--- a/xml/System.Windows.Forms/ListView.xml
+++ b/xml/System.Windows.Forms/ListView.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Windows list view control, which displays a collection of items that can be displayed using one of four different views.</summary>
@@ -1168,10 +1164,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListView+CheckedIndexCollection</ReturnType>
@@ -1225,10 +1217,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListView+CheckedListViewItemCollection</ReturnType>
@@ -1452,10 +1440,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListView+ColumnHeaderCollection</ReturnType>
@@ -1610,12 +1594,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -1678,10 +1656,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.CreateParams</ReturnType>
@@ -2081,12 +2055,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListViewItem</ReturnType>
       </ReturnValue>
@@ -2143,10 +2111,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListViewItem</ReturnType>
@@ -2198,12 +2162,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListViewItem</ReturnType>
       </ReturnValue>
@@ -2837,10 +2795,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListViewGroupCollection</ReturnType>
@@ -3070,12 +3024,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListViewHitTestInfo</ReturnType>
       </ReturnValue>
@@ -3115,12 +3063,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListViewHitTestInfo</ReturnType>
       </ReturnValue>
@@ -3274,10 +3216,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListViewInsertionMark</ReturnType>
@@ -3641,10 +3579,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListView+ListViewItemCollection</ReturnType>
@@ -4084,12 +4018,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4143,12 +4071,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4192,12 +4114,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4242,12 +4158,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4291,12 +4201,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4350,12 +4254,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4398,12 +4296,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4446,12 +4338,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4496,12 +4382,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4544,12 +4424,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4594,12 +4468,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4669,12 +4537,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4702,12 +4564,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4736,12 +4592,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4770,12 +4620,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4807,12 +4651,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4844,12 +4682,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4881,12 +4713,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4932,12 +4758,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4982,12 +4802,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5031,12 +4845,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5081,12 +4889,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5129,12 +4931,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5174,12 +4970,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5210,12 +5000,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5260,12 +5044,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5296,12 +5074,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5332,12 +5104,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5368,12 +5134,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5421,10 +5181,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5468,12 +5224,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5517,12 +5267,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5568,12 +5312,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5604,12 +5342,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -6240,10 +5972,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListView+SelectedIndexCollection</ReturnType>
@@ -6309,10 +6037,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListView+SelectedListViewItemCollection</ReturnType>
@@ -6723,14 +6447,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -6927,12 +6643,6 @@ When this property is set to `false`, selected items in the <xref:System.Windows
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ListViewGroup.xml b/xml/System.Windows.Forms/ListViewGroup.xml
index 4818dd9245f..77691d58ac8 100644
--- a/xml/System.Windows.Forms/ListViewGroup.xml
+++ b/xml/System.Windows.Forms/ListViewGroup.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a group of items displayed within a <see cref="T:System.Windows.Forms.ListView" /> control.</summary>
@@ -145,12 +141,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="header" Type="System.String" />
       </Parameters>
@@ -184,10 +174,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="key" Type="System.String" />
@@ -224,10 +210,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="header" Type="System.String" />
@@ -517,14 +499,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListView</ReturnType>
@@ -575,14 +549,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -708,14 +674,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Windows.Forms/ListViewGroupCollection.xml b/xml/System.Windows.Forms/ListViewGroupCollection.xml
index c129570ff64..aee49ea0280 100644
--- a/xml/System.Windows.Forms/ListViewGroupCollection.xml
+++ b/xml/System.Windows.Forms/ListViewGroupCollection.xml
@@ -38,10 +38,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the collection of groups within a <see cref="T:System.Windows.Forms.ListView" /> control.</summary>
@@ -158,12 +154,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListViewGroup</ReturnType>
       </ReturnValue>
@@ -854,12 +844,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -901,12 +885,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -943,12 +921,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -984,12 +956,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1120,14 +1086,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1164,12 +1122,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ListViewHitTestInfo.xml b/xml/System.Windows.Forms/ListViewHitTestInfo.xml
index 365e2d3be8e..9950a27cf1c 100644
--- a/xml/System.Windows.Forms/ListViewHitTestInfo.xml
+++ b/xml/System.Windows.Forms/ListViewHitTestInfo.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains information about an area of a <see cref="T:System.Windows.Forms.ListView" /> control or a <see cref="T:System.Windows.Forms.ListViewItem" />.</summary>
diff --git a/xml/System.Windows.Forms/ListViewInsertionMark.xml b/xml/System.Windows.Forms/ListViewInsertionMark.xml
index 2d4baaab32c..2571707706f 100644
--- a/xml/System.Windows.Forms/ListViewInsertionMark.xml
+++ b/xml/System.Windows.Forms/ListViewInsertionMark.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Used to indicate the expected drop location when an item is dragged to a new position in a <see cref="T:System.Windows.Forms.ListView" /> control. This functionality is available only on Windows XP and later.</summary>
diff --git a/xml/System.Windows.Forms/ListViewItem+ListViewSubItem.xml b/xml/System.Windows.Forms/ListViewItem+ListViewSubItem.xml
index 62120a9dfe9..a06da5db333 100644
--- a/xml/System.Windows.Forms/ListViewItem+ListViewSubItem.xml
+++ b/xml/System.Windows.Forms/ListViewItem+ListViewSubItem.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a subitem of a <see cref="T:System.Windows.Forms.ListViewItem" />.</summary>
@@ -323,14 +319,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -449,14 +437,6 @@ ListViewItem1.SubItems[1].Font = New Font(ListViewItem1.SubItems[1].Font, _
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -610,14 +590,6 @@ ListViewItem1.SubItems[1].Font = New Font(ListViewItem1.SubItems[1].Font, _
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -658,12 +630,6 @@ ListViewItem1.SubItems[1].Font = New Font(ListViewItem1.SubItems[1].Font, _
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ListViewItem+ListViewSubItemCollection.xml b/xml/System.Windows.Forms/ListViewItem+ListViewSubItemCollection.xml
index 763ba80b75a..f9cfe7b6c06 100644
--- a/xml/System.Windows.Forms/ListViewItem+ListViewSubItemCollection.xml
+++ b/xml/System.Windows.Forms/ListViewItem+ListViewSubItemCollection.xml
@@ -498,12 +498,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -544,12 +538,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -669,12 +657,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -715,12 +697,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -943,12 +919,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1031,12 +1001,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1195,12 +1159,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1244,12 +1202,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1289,12 +1241,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1331,12 +1277,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1424,14 +1364,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1471,12 +1403,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ListViewItem.xml b/xml/System.Windows.Forms/ListViewItem.xml
index b860444b4b4..21d783c4172 100644
--- a/xml/System.Windows.Forms/ListViewItem.xml
+++ b/xml/System.Windows.Forms/ListViewItem.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an item in a <see cref="T:System.Windows.Forms.ListView" /> control.</summary>
@@ -192,10 +188,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
@@ -274,12 +266,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="group" Type="System.Windows.Forms.ListViewGroup" Index="0" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0" />
       </Parameters>
@@ -350,12 +336,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="imageIndex" Type="System.Int32" />
@@ -395,12 +375,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" Index="0" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0" />
         <Parameter Name="imageKey" Type="System.String" Index="1" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0" />
@@ -440,12 +414,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" Index="0" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0" />
         <Parameter Name="group" Type="System.Windows.Forms.ListViewGroup" Index="1" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0" />
@@ -530,12 +498,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="items" Type="System.String[]" Index="0" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0">
           <Attributes>
@@ -580,12 +542,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="items" Type="System.String[]" Index="0" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0">
           <Attributes>
@@ -719,12 +675,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" Index="0" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0" />
         <Parameter Name="imageIndex" Type="System.Int32" Index="1" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0" />
@@ -772,12 +722,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" Index="0" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0" />
         <Parameter Name="imageKey" Type="System.String" Index="1" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0" />
@@ -824,12 +768,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="items" Type="System.String[]" Index="0" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0">
           <Attributes>
@@ -882,12 +820,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="items" Type="System.String[]" Index="0" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0">
           <Attributes>
@@ -992,12 +924,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="subItems" Type="System.Windows.Forms.ListViewItem+ListViewSubItem[]" Index="0" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0">
           <Attributes>
@@ -1050,12 +976,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="items" Type="System.String[]">
           <Attributes>
@@ -1114,12 +1034,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="items" Type="System.String[]" Index="0" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0">
           <Attributes>
@@ -1170,12 +1084,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="items" Type="System.String[]" Index="0" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0">
           <Attributes>
@@ -1236,12 +1144,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="items" Type="System.String[]" Index="0" FrameworkAlternate="net-5.0;net-6.0;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;windowsdesktop-3.0;windowsdesktop-3.1;windowsdesktop-5.0;windowsdesktop-6.0;windowsdesktop-7.0;netframework-4.8.1;windowsdesktop-8.0;windowsdesktop-9.0">
           <Attributes>
@@ -1617,12 +1519,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListViewItem</ReturnType>
       </ReturnValue>
@@ -1867,12 +1763,6 @@ ListViewItem1.Font = New Font(ListViewItem1.Font, _
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListViewItem+ListViewSubItem</ReturnType>
       </ReturnValue>
@@ -1939,14 +1829,6 @@ ListViewItem1.Font = New Font(ListViewItem1.Font, _
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListViewGroup</ReturnType>
@@ -2160,10 +2042,6 @@ If you set the <xref:System.Windows.Forms.ListViewItem.ImageKey%2A> property, th
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ImageList</ReturnType>
@@ -2309,10 +2187,6 @@ If you set the <xref:System.Windows.Forms.ListViewItem.ImageKey%2A> property, th
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ListView</ReturnType>
@@ -2822,14 +2696,6 @@ If you set the <xref:System.Windows.Forms.ListViewItem.ImageKey%2A> property, th
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Windows.Forms/ListViewItemConverter.xml b/xml/System.Windows.Forms/ListViewItemConverter.xml
index 12ba6853be1..c0172fcfe91 100644
--- a/xml/System.Windows.Forms/ListViewItemConverter.xml
+++ b/xml/System.Windows.Forms/ListViewItemConverter.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.Windows.Forms.ListViewItem" /> objects to and from various other representations.</summary>
diff --git a/xml/System.Windows.Forms/ListViewItemMouseHoverEventArgs.xml b/xml/System.Windows.Forms/ListViewItemMouseHoverEventArgs.xml
index 962a6f9a4fe..f7ed620aaa1 100644
--- a/xml/System.Windows.Forms/ListViewItemMouseHoverEventArgs.xml
+++ b/xml/System.Windows.Forms/ListViewItemMouseHoverEventArgs.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.ListView.ItemMouseHover" /> event.</summary>
diff --git a/xml/System.Windows.Forms/ListViewItemSelectionChangedEventArgs.xml b/xml/System.Windows.Forms/ListViewItemSelectionChangedEventArgs.xml
index f137ed0aecc..72c1d771cfd 100644
--- a/xml/System.Windows.Forms/ListViewItemSelectionChangedEventArgs.xml
+++ b/xml/System.Windows.Forms/ListViewItemSelectionChangedEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.ListView.ItemSelectionChanged" /> event.</summary>
diff --git a/xml/System.Windows.Forms/ListViewItemStateImageIndexConverter.xml b/xml/System.Windows.Forms/ListViewItemStateImageIndexConverter.xml
index 98038509d5f..4333fb1e75c 100644
--- a/xml/System.Windows.Forms/ListViewItemStateImageIndexConverter.xml
+++ b/xml/System.Windows.Forms/ListViewItemStateImageIndexConverter.xml
@@ -63,12 +63,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.TypeConverter+StandardValuesCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/MaskedTextBox.xml b/xml/System.Windows.Forms/MaskedTextBox.xml
index 2ea29f04e69..a0504941bca 100644
--- a/xml/System.Windows.Forms/MaskedTextBox.xml
+++ b/xml/System.Windows.Forms/MaskedTextBox.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Uses a mask to distinguish between proper and improper user input.</summary>
@@ -339,14 +335,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -808,14 +796,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.IFormatProvider</ReturnType>
@@ -1263,14 +1243,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1484,14 +1456,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1598,10 +1562,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.MaskedTextProvider</ReturnType>
@@ -1701,14 +1661,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.MaskInputRejectedEventHandler</ReturnType>
@@ -1894,14 +1846,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -3074,14 +3018,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -3263,14 +3199,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TypeValidationEventHandler</ReturnType>
@@ -3435,10 +3363,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -3500,14 +3424,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
diff --git a/xml/System.Windows.Forms/MdiClient+ControlCollection.xml b/xml/System.Windows.Forms/MdiClient+ControlCollection.xml
index bb0f2626630..388dfcf0318 100644
--- a/xml/System.Windows.Forms/MdiClient+ControlCollection.xml
+++ b/xml/System.Windows.Forms/MdiClient+ControlCollection.xml
@@ -89,12 +89,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -143,12 +137,6 @@ child.setMdiParent(this);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/MdiClient.xml b/xml/System.Windows.Forms/MdiClient.xml
index ae93d58bdca..0070f3ee192 100644
--- a/xml/System.Windows.Forms/MdiClient.xml
+++ b/xml/System.Windows.Forms/MdiClient.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the container for multiple-document interface (MDI) child forms. This class cannot be inherited.</summary>
@@ -113,14 +109,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Image</ReturnType>
diff --git a/xml/System.Windows.Forms/MeasureItemEventArgs.xml b/xml/System.Windows.Forms/MeasureItemEventArgs.xml
index 01a85a9fe6a..0766198b907 100644
--- a/xml/System.Windows.Forms/MeasureItemEventArgs.xml
+++ b/xml/System.Windows.Forms/MeasureItemEventArgs.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see langword="MeasureItem" /> event of the <see cref="T:System.Windows.Forms.ListBox" />, <see cref="T:System.Windows.Forms.ComboBox" />, <see cref="T:System.Windows.Forms.CheckedListBox" />, and <see cref="T:System.Windows.Forms.MenuItem" /> controls.</summary>
diff --git a/xml/System.Windows.Forms/MenuStrip.xml b/xml/System.Windows.Forms/MenuStrip.xml
index 79a0a1fab01..284589111b2 100644
--- a/xml/System.Windows.Forms/MenuStrip.xml
+++ b/xml/System.Windows.Forms/MenuStrip.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a menu system for a form.</summary>
@@ -171,12 +167,6 @@ The <xref:System.Windows.Forms.MenuStrip> replaces and extends the <xref:System.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -570,12 +560,6 @@ The <xref:System.Windows.Forms.MenuStrip> replaces and extends the <xref:System.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -618,12 +602,6 @@ The <xref:System.Windows.Forms.MenuStrip> replaces and extends the <xref:System.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/Message.xml b/xml/System.Windows.Forms/Message.xml
index 16112583742..5ef95c53cc3 100644
--- a/xml/System.Windows.Forms/Message.xml
+++ b/xml/System.Windows.Forms/Message.xml
@@ -141,10 +141,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -270,10 +266,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -620,10 +612,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/MessageBox.xml b/xml/System.Windows.Forms/MessageBox.xml
index 3ca92feac05..1a6dd03f31d 100644
--- a/xml/System.Windows.Forms/MessageBox.xml
+++ b/xml/System.Windows.Forms/MessageBox.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Displays a message window, also known as a dialog box, which presents a message to the user. It is a modal window, blocking other actions in the application until the user closes it. A <see cref="T:System.Windows.Forms.MessageBox" /> can contain text, buttons, and symbols that inform and instruct the user.</summary>
@@ -1076,12 +1072,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DialogResult</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/MonthCalendar+HitArea.xml b/xml/System.Windows.Forms/MonthCalendar+HitArea.xml
index 9ad299c95dc..b4878759263 100644
--- a/xml/System.Windows.Forms/MonthCalendar+HitArea.xml
+++ b/xml/System.Windows.Forms/MonthCalendar+HitArea.xml
@@ -19,12 +19,6 @@
   <Base>
     <BaseTypeName>System.Enum</BaseTypeName>
   </Base>
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Defines constants that represent areas in a <see cref="T:System.Windows.Forms.MonthCalendar" /> control.</summary>
     <remarks>
diff --git a/xml/System.Windows.Forms/MonthCalendar+HitTestInfo.xml b/xml/System.Windows.Forms/MonthCalendar+HitTestInfo.xml
index 1de22e3de6f..85e6621a92c 100644
--- a/xml/System.Windows.Forms/MonthCalendar+HitTestInfo.xml
+++ b/xml/System.Windows.Forms/MonthCalendar+HitTestInfo.xml
@@ -20,12 +20,6 @@
     <BaseTypeName>System.Object</BaseTypeName>
   </Base>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Contains information about an area of a <see cref="T:System.Windows.Forms.MonthCalendar" /> control. This class cannot be inherited.</summary>
     <remarks>
diff --git a/xml/System.Windows.Forms/MonthCalendar.xml b/xml/System.Windows.Forms/MonthCalendar.xml
index 83b1a68090e..bfe2b62d0d1 100644
--- a/xml/System.Windows.Forms/MonthCalendar.xml
+++ b/xml/System.Windows.Forms/MonthCalendar.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Windows control that enables the user to select a date using a visual monthly calendar display.</summary>
@@ -419,14 +415,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Image</ReturnType>
@@ -477,14 +465,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -570,14 +550,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -726,14 +698,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -874,14 +838,6 @@ The <xref:System.Windows.Forms.AccessibleObject> is only available in applicatio
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DateRangeEventHandler</ReturnType>
@@ -941,14 +897,6 @@ The <xref:System.Windows.Forms.AccessibleObject> is only available in applicatio
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DateRangeEventHandler</ReturnType>
@@ -1222,14 +1170,6 @@ The <xref:System.Windows.Forms.AccessibleObject> is only available in applicatio
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1551,14 +1491,6 @@ The <xref:System.Windows.Forms.AccessibleObject> is only available in applicatio
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1830,14 +1762,6 @@ The <xref:System.Windows.Forms.AccessibleObject> is only available in applicatio
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.MouseEventHandler</ReturnType>
@@ -1879,14 +1803,6 @@ The <xref:System.Windows.Forms.AccessibleObject> is only available in applicatio
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.MouseEventHandler</ReturnType>
@@ -2353,14 +2269,6 @@ The <xref:System.Windows.Forms.AccessibleObject> is only available in applicatio
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -2412,14 +2320,6 @@ The <xref:System.Windows.Forms.AccessibleObject> is only available in applicatio
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.PaintEventHandler</ReturnType>
@@ -2788,14 +2688,6 @@ The <xref:System.Windows.Forms.AccessibleObject> is only available in applicatio
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -3627,14 +3519,6 @@ The <xref:System.Windows.Forms.AccessibleObject> is only available in applicatio
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/NativeWindow.xml b/xml/System.Windows.Forms/NativeWindow.xml
index 00fcbfb11a2..b86736c605a 100644
--- a/xml/System.Windows.Forms/NativeWindow.xml
+++ b/xml/System.Windows.Forms/NativeWindow.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a low-level encapsulation of a window handle and a window procedure.</summary>
@@ -399,12 +395,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.NativeWindow</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/NodeLabelEditEventArgs.xml b/xml/System.Windows.Forms/NodeLabelEditEventArgs.xml
index 89b8f70d288..572260dc46b 100644
--- a/xml/System.Windows.Forms/NodeLabelEditEventArgs.xml
+++ b/xml/System.Windows.Forms/NodeLabelEditEventArgs.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.TreeView.BeforeLabelEdit" /> and <see cref="E:System.Windows.Forms.TreeView.AfterLabelEdit" /> events.</summary>
diff --git a/xml/System.Windows.Forms/NotifyIcon.xml b/xml/System.Windows.Forms/NotifyIcon.xml
index 7fd15e65e90..f3949a1b132 100644
--- a/xml/System.Windows.Forms/NotifyIcon.xml
+++ b/xml/System.Windows.Forms/NotifyIcon.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies a component that creates an icon in the notification area. This class cannot be inherited.</summary>
@@ -138,12 +134,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="container" Type="System.ComponentModel.IContainer" />
       </Parameters>
@@ -390,14 +380,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -453,14 +435,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1080,12 +1054,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1225,14 +1193,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/NumericUpDown.xml b/xml/System.Windows.Forms/NumericUpDown.xml
index c962f81a894..878fa3556b3 100644
--- a/xml/System.Windows.Forms/NumericUpDown.xml
+++ b/xml/System.Windows.Forms/NumericUpDown.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Windows spin box (also known as an up-down control) that displays numeric values.</summary>
@@ -896,14 +892,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1045,14 +1033,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1362,14 +1342,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/NumericUpDownAccelerationCollection.xml b/xml/System.Windows.Forms/NumericUpDownAccelerationCollection.xml
index 78f1da116fe..b213d3a851f 100644
--- a/xml/System.Windows.Forms/NumericUpDownAccelerationCollection.xml
+++ b/xml/System.Windows.Forms/NumericUpDownAccelerationCollection.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a sorted collection of <see cref="T:System.Windows.Forms.NumericUpDownAcceleration" /> objects in the <see cref="T:System.Windows.Forms.NumericUpDown" /> control.</summary>
diff --git a/xml/System.Windows.Forms/OSFeature.xml b/xml/System.Windows.Forms/OSFeature.xml
index 1c6fafd93ef..fc58a09694a 100644
--- a/xml/System.Windows.Forms/OSFeature.xml
+++ b/xml/System.Windows.Forms/OSFeature.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides operating-system specific feature queries.</summary>
diff --git a/xml/System.Windows.Forms/OpacityConverter.xml b/xml/System.Windows.Forms/OpacityConverter.xml
index b9bbd5017d4..c5841f449ae 100644
--- a/xml/System.Windows.Forms/OpacityConverter.xml
+++ b/xml/System.Windows.Forms/OpacityConverter.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert opacity values to and from a string.</summary>
@@ -103,12 +99,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/OpenFileDialog.xml b/xml/System.Windows.Forms/OpenFileDialog.xml
index 34d29138eda..b1d4610dce0 100644
--- a/xml/System.Windows.Forms/OpenFileDialog.xml
+++ b/xml/System.Windows.Forms/OpenFileDialog.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Displays a standard dialog box that prompts the user to open a file. This class cannot be inherited.</summary>
diff --git a/xml/System.Windows.Forms/OwnerDrawPropertyBag.xml b/xml/System.Windows.Forms/OwnerDrawPropertyBag.xml
index a9ad8ef1406..bef656adef6 100644
--- a/xml/System.Windows.Forms/OwnerDrawPropertyBag.xml
+++ b/xml/System.Windows.Forms/OwnerDrawPropertyBag.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains values of properties that a component might need only occasionally.</summary>
@@ -149,12 +145,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.OwnerDrawPropertyBag</ReturnType>
       </ReturnValue>
@@ -308,12 +298,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/Padding.xml b/xml/System.Windows.Forms/Padding.xml
index 418dcacdbac..d239930ce14 100644
--- a/xml/System.Windows.Forms/Padding.xml
+++ b/xml/System.Windows.Forms/Padding.xml
@@ -406,10 +406,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -1063,10 +1059,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/PaddingConverter.xml b/xml/System.Windows.Forms/PaddingConverter.xml
index 18c36dfd27a..8d5d11f4586 100644
--- a/xml/System.Windows.Forms/PaddingConverter.xml
+++ b/xml/System.Windows.Forms/PaddingConverter.xml
@@ -34,10 +34,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.Windows.Forms.Padding" /> values to and from various other representations.</summary>
@@ -98,12 +94,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -285,12 +275,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -378,10 +362,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
diff --git a/xml/System.Windows.Forms/PageSetupDialog.xml b/xml/System.Windows.Forms/PageSetupDialog.xml
index a5be9a6405c..74ee42a7ce2 100644
--- a/xml/System.Windows.Forms/PageSetupDialog.xml
+++ b/xml/System.Windows.Forms/PageSetupDialog.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Enables users to change page-related print settings, including margins and paper orientation. This class cannot be inherited.</summary>
diff --git a/xml/System.Windows.Forms/PaintEventArgs.xml b/xml/System.Windows.Forms/PaintEventArgs.xml
index 96caf8c6e64..fde578cc637 100644
--- a/xml/System.Windows.Forms/PaintEventArgs.xml
+++ b/xml/System.Windows.Forms/PaintEventArgs.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.Control.Paint" /> event.</summary>
diff --git a/xml/System.Windows.Forms/Panel.xml b/xml/System.Windows.Forms/Panel.xml
index ab888df7bf7..915601d5a91 100644
--- a/xml/System.Windows.Forms/Panel.xml
+++ b/xml/System.Windows.Forms/Panel.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Used to group collections of controls.</summary>
@@ -323,12 +319,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -365,10 +355,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.CreateParams</ReturnType>
@@ -540,12 +526,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -639,14 +619,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -714,12 +686,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/PictureBox.xml b/xml/System.Windows.Forms/PictureBox.xml
index 7d2025746b9..74eb2b75671 100644
--- a/xml/System.Windows.Forms/PictureBox.xml
+++ b/xml/System.Windows.Forms/PictureBox.xml
@@ -66,10 +66,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Windows picture box control for displaying an image.</summary>
@@ -377,12 +373,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -417,10 +407,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.CreateParams</ReturnType>
@@ -657,14 +643,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -1299,12 +1277,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1406,12 +1378,6 @@ This method stores in the task it returns all non-usage exceptions that the meth
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1556,12 +1522,6 @@ The following code example demonstrates how to use the <xref:System.Windows.Form
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1598,10 +1558,6 @@ The following code example demonstrates how to use the <xref:System.Windows.Form
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1650,10 +1606,6 @@ The following code example demonstrates how to use the <xref:System.Windows.Form
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1697,12 +1649,6 @@ The following code example demonstrates how to use the <xref:System.Windows.Form
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1745,12 +1691,6 @@ The following code example demonstrates how to use the <xref:System.Windows.Form
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1794,12 +1734,6 @@ The following code example demonstrates how to use the <xref:System.Windows.Form
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1831,12 +1765,6 @@ The following code example demonstrates how to use the <xref:System.Windows.Form
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1869,12 +1797,6 @@ The following code example demonstrates how to use the <xref:System.Windows.Form
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1920,12 +1842,6 @@ The following code example demonstrates how to use the <xref:System.Windows.Form
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1969,12 +1885,6 @@ The following code example demonstrates how to use the <xref:System.Windows.Form
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2503,14 +2413,6 @@ The following code example demonstrates how to use the <xref:System.Windows.Form
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2594,12 +2496,6 @@ The following code example demonstrates how to use the <xref:System.Windows.Form
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/PopupEventArgs.xml b/xml/System.Windows.Forms/PopupEventArgs.xml
index f70eb152cac..21205267fbc 100644
--- a/xml/System.Windows.Forms/PopupEventArgs.xml
+++ b/xml/System.Windows.Forms/PopupEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.ToolTip.Popup" /> event.</summary>
diff --git a/xml/System.Windows.Forms/PrintControllerWithStatusDialog.xml b/xml/System.Windows.Forms/PrintControllerWithStatusDialog.xml
index 110b15294ce..985925f6310 100644
--- a/xml/System.Windows.Forms/PrintControllerWithStatusDialog.xml
+++ b/xml/System.Windows.Forms/PrintControllerWithStatusDialog.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Controls how a document is printed from a Windows Forms application.</summary>
diff --git a/xml/System.Windows.Forms/PrintDialog.xml b/xml/System.Windows.Forms/PrintDialog.xml
index ff36f08eb9f..4bdd041ac4c 100644
--- a/xml/System.Windows.Forms/PrintDialog.xml
+++ b/xml/System.Windows.Forms/PrintDialog.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Lets users select a printer and choose which sections of the document to print from a Windows Forms application.</summary>
@@ -344,14 +340,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Printing.PrintDocument</ReturnType>
diff --git a/xml/System.Windows.Forms/PrintPreviewControl.xml b/xml/System.Windows.Forms/PrintPreviewControl.xml
index 98ddf600db1..88c2946cf9f 100644
--- a/xml/System.Windows.Forms/PrintPreviewControl.xml
+++ b/xml/System.Windows.Forms/PrintPreviewControl.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the raw preview part of print previewing from a Windows Forms application, without any dialog boxes or buttons. Most <see cref="T:System.Windows.Forms.PrintPreviewControl" /> objects are found on <see cref="T:System.Windows.Forms.PrintPreviewDialog" /> objects, but they do not have to be.</summary>
@@ -280,14 +276,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Printing.PrintDocument</ReturnType>
@@ -776,14 +764,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -922,14 +902,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/PrintPreviewDialog.xml b/xml/System.Windows.Forms/PrintPreviewDialog.xml
index 40e1ece93a1..4b0829f8dc9 100644
--- a/xml/System.Windows.Forms/PrintPreviewDialog.xml
+++ b/xml/System.Windows.Forms/PrintPreviewDialog.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a dialog box form that contains a <see cref="T:System.Windows.Forms.PrintPreviewControl" /> for printing from a Windows Forms application.</summary>
@@ -1521,14 +1517,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Cursor</ReturnType>
@@ -1623,10 +1611,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ControlBindingsCollection</ReturnType>
@@ -1802,10 +1786,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ScrollableControl+DockPaddingEdges</ReturnType>
@@ -1991,14 +1971,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -3038,12 +3010,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3243,10 +3209,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.PrintPreviewControl</ReturnType>
@@ -3936,14 +3898,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/ProfessionalColorTable.xml b/xml/System.Windows.Forms/ProfessionalColorTable.xml
index 0d9db47688e..9f470947162 100644
--- a/xml/System.Windows.Forms/ProfessionalColorTable.xml
+++ b/xml/System.Windows.Forms/ProfessionalColorTable.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides colors used for Microsoft Office display elements.</summary>
diff --git a/xml/System.Windows.Forms/ProfessionalColors.xml b/xml/System.Windows.Forms/ProfessionalColors.xml
index 924e4526ff8..0078ce3f543 100644
--- a/xml/System.Windows.Forms/ProfessionalColors.xml
+++ b/xml/System.Windows.Forms/ProfessionalColors.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides <see cref="T:System.Drawing.Color" /> structures that are colors of a Windows display element. This class cannot be inherited.</summary>
diff --git a/xml/System.Windows.Forms/ProgressBar.xml b/xml/System.Windows.Forms/ProgressBar.xml
index 757317f0f23..669031abab6 100644
--- a/xml/System.Windows.Forms/ProgressBar.xml
+++ b/xml/System.Windows.Forms/ProgressBar.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Windows progress bar control.</summary>
@@ -496,12 +492,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -565,10 +555,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.CreateParams</ReturnType>
@@ -801,14 +787,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -1477,12 +1455,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1546,12 +1518,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1598,12 +1564,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1634,12 +1594,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1687,10 +1641,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -2318,14 +2268,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2394,12 +2336,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ProgressBarRenderer.xml b/xml/System.Windows.Forms/ProgressBarRenderer.xml
index 04ce94bb6a8..326da61f765 100644
--- a/xml/System.Windows.Forms/ProgressBarRenderer.xml
+++ b/xml/System.Windows.Forms/ProgressBarRenderer.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods used to render a progress bar control with visual styles. This class cannot be inherited.</summary>
diff --git a/xml/System.Windows.Forms/PropertyGrid+PropertyTabCollection.xml b/xml/System.Windows.Forms/PropertyGrid+PropertyTabCollection.xml
index bad6a20e0a8..74b594cf4f5 100644
--- a/xml/System.Windows.Forms/PropertyGrid+PropertyTabCollection.xml
+++ b/xml/System.Windows.Forms/PropertyGrid+PropertyTabCollection.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains a collection of <see cref="T:System.Windows.Forms.Design.PropertyTab" /> objects.</summary>
diff --git a/xml/System.Windows.Forms/PropertyGrid.xml b/xml/System.Windows.Forms/PropertyGrid.xml
index 66c12084b98..52e2184a36e 100644
--- a/xml/System.Windows.Forms/PropertyGrid.xml
+++ b/xml/System.Windows.Forms/PropertyGrid.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a user interface for browsing the properties of an object.</summary>
@@ -235,14 +231,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Image</ReturnType>
@@ -293,14 +281,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -393,14 +373,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1373,14 +1345,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1579,14 +1543,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.KeyEventHandler</ReturnType>
@@ -1645,14 +1601,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.KeyPressEventHandler</ReturnType>
@@ -1711,14 +1659,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.KeyEventHandler</ReturnType>
@@ -1864,14 +1804,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.MouseEventHandler</ReturnType>
@@ -1920,14 +1852,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1976,14 +1900,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -2032,14 +1948,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.MouseEventHandler</ReturnType>
@@ -2088,14 +1996,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.MouseEventHandler</ReturnType>
@@ -2995,14 +2895,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -3137,14 +3029,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -3196,14 +3080,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.PropertyTabChangedEventHandler</ReturnType>
@@ -3304,14 +3180,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.PropertyValueChangedEventHandler</ReturnType>
@@ -3551,14 +3419,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.GridItem</ReturnType>
@@ -3603,14 +3463,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.SelectedGridItemChangedEventHandler</ReturnType>
@@ -3734,14 +3586,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -3830,14 +3674,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -4043,14 +3879,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.ISite</ReturnType>
@@ -4168,14 +3996,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.Design.ComponentRenameEventHandler</ReturnType>
@@ -4375,12 +4195,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4432,12 +4246,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4527,14 +4335,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -4635,14 +4435,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripRenderer</ReturnType>
diff --git a/xml/System.Windows.Forms/PropertyManager.xml b/xml/System.Windows.Forms/PropertyManager.xml
index 9e1925e9a58..83ce513b62e 100644
--- a/xml/System.Windows.Forms/PropertyManager.xml
+++ b/xml/System.Windows.Forms/PropertyManager.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Maintains a <see cref="T:System.Windows.Forms.Binding" /> between an object's property and a data-bound control property.</summary>
@@ -189,10 +185,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Windows.Forms/PropertyTabChangedEventArgs.xml b/xml/System.Windows.Forms/PropertyTabChangedEventArgs.xml
index 865d2235e9b..9ba0ae5cc6a 100644
--- a/xml/System.Windows.Forms/PropertyTabChangedEventArgs.xml
+++ b/xml/System.Windows.Forms/PropertyTabChangedEventArgs.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.PropertyGrid.PropertyTabChanged" /> event of a <see cref="T:System.Windows.Forms.PropertyGrid" />.</summary>
diff --git a/xml/System.Windows.Forms/PropertyValueChangedEventArgs.xml b/xml/System.Windows.Forms/PropertyValueChangedEventArgs.xml
index 7ff6db90559..c391d506d60 100644
--- a/xml/System.Windows.Forms/PropertyValueChangedEventArgs.xml
+++ b/xml/System.Windows.Forms/PropertyValueChangedEventArgs.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.PropertyGrid.PropertyValueChanged" /> event of a <see cref="T:System.Windows.Forms.PropertyGrid" />.</summary>
diff --git a/xml/System.Windows.Forms/QueryAccessibilityHelpEventArgs.xml b/xml/System.Windows.Forms/QueryAccessibilityHelpEventArgs.xml
index 2ff6ac523aa..f83eacb04bf 100644
--- a/xml/System.Windows.Forms/QueryAccessibilityHelpEventArgs.xml
+++ b/xml/System.Windows.Forms/QueryAccessibilityHelpEventArgs.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.Control.QueryAccessibilityHelp" /> event.</summary>
diff --git a/xml/System.Windows.Forms/RadioButton+RadioButtonAccessibleObject.xml b/xml/System.Windows.Forms/RadioButton+RadioButtonAccessibleObject.xml
index 0b684d776fc..6e7c6bfffee 100644
--- a/xml/System.Windows.Forms/RadioButton+RadioButtonAccessibleObject.xml
+++ b/xml/System.Windows.Forms/RadioButton+RadioButtonAccessibleObject.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about the <see cref="T:System.Windows.Forms.RadioButton" /> control to accessibility client applications.</summary>
@@ -81,10 +77,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="owner" Type="System.Windows.Forms.RadioButton" />
@@ -120,10 +112,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/RadioButton.xml b/xml/System.Windows.Forms/RadioButton.xml
index 8d8e0c05857..4e13e0e7fc1 100644
--- a/xml/System.Windows.Forms/RadioButton.xml
+++ b/xml/System.Windows.Forms/RadioButton.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Enables the user to select a single option from a group of choices when paired with other <see cref="T:System.Windows.Forms.RadioButton" /> controls.</summary>
@@ -218,14 +214,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -450,14 +438,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -616,14 +596,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -672,14 +644,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.MouseEventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/RadioButtonRenderer.xml b/xml/System.Windows.Forms/RadioButtonRenderer.xml
index c7488a62fed..7f78c996443 100644
--- a/xml/System.Windows.Forms/RadioButtonRenderer.xml
+++ b/xml/System.Windows.Forms/RadioButtonRenderer.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods used to render an option button control (also known as a radio button) with or without visual styles. This class cannot be inherited.</summary>
@@ -179,10 +175,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -252,12 +244,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/RelatedImageListAttribute.xml b/xml/System.Windows.Forms/RelatedImageListAttribute.xml
index 29f02514d67..3826d4510be 100644
--- a/xml/System.Windows.Forms/RelatedImageListAttribute.xml
+++ b/xml/System.Windows.Forms/RelatedImageListAttribute.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates which <see cref="T:System.Windows.Forms.ImageList" /> a property is related to.</summary>
diff --git a/xml/System.Windows.Forms/RetrieveVirtualItemEventArgs.xml b/xml/System.Windows.Forms/RetrieveVirtualItemEventArgs.xml
index 0b48e24dd20..12078da804c 100644
--- a/xml/System.Windows.Forms/RetrieveVirtualItemEventArgs.xml
+++ b/xml/System.Windows.Forms/RetrieveVirtualItemEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.ListView.RetrieveVirtualItem" /> event.</summary>
diff --git a/xml/System.Windows.Forms/RichTextBox.xml b/xml/System.Windows.Forms/RichTextBox.xml
index 0a4b657c6d6..42819bcd187 100644
--- a/xml/System.Windows.Forms/RichTextBox.xml
+++ b/xml/System.Windows.Forms/RichTextBox.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Windows rich text box control.</summary>
@@ -320,14 +316,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Image</ReturnType>
@@ -378,14 +366,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -478,14 +458,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -694,14 +666,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ContentsResizedEventHandler</ReturnType>
@@ -961,14 +925,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DragEventHandler</ReturnType>
@@ -1011,14 +967,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DragEventHandler</ReturnType>
@@ -1078,14 +1026,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1135,14 +1075,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DragEventHandler</ReturnType>
@@ -1943,14 +1875,6 @@ The <paramref name="end" /> parameter was less the <paramref name="start" /> par
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.GiveFeedbackEventHandler</ReturnType>
@@ -1992,14 +1916,6 @@ The <paramref name="end" /> parameter was less the <paramref name="start" /> par
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -2051,14 +1967,6 @@ The <paramref name="end" /> parameter was less the <paramref name="start" /> par
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -2147,14 +2055,6 @@ The <paramref name="end" /> parameter was less the <paramref name="start" /> par
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.LinkClickedEventHandler</ReturnType>
@@ -3107,14 +3007,6 @@ The <paramref name="end" /> parameter was less the <paramref name="start" /> par
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -3176,14 +3068,6 @@ The <paramref name="end" /> parameter was less the <paramref name="start" /> par
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.QueryContinueDragEventHandler</ReturnType>
@@ -3450,14 +3334,6 @@ The <paramref name="end" /> parameter was less the <paramref name="start" /> par
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -4015,14 +3891,6 @@ The <paramref name="end" /> parameter was less the <paramref name="start" /> par
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -4217,14 +4085,6 @@ The <paramref name="end" /> parameter was less the <paramref name="start" /> par
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -4859,14 +4719,6 @@ The <paramref name="end" /> parameter was less the <paramref name="start" /> par
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/SaveFileDialog.xml b/xml/System.Windows.Forms/SaveFileDialog.xml
index df01d841d6d..d3186d82cf7 100644
--- a/xml/System.Windows.Forms/SaveFileDialog.xml
+++ b/xml/System.Windows.Forms/SaveFileDialog.xml
@@ -222,12 +222,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Stream</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/Screen.xml b/xml/System.Windows.Forms/Screen.xml
index 5432712c71e..8e702580c5b 100644
--- a/xml/System.Windows.Forms/Screen.xml
+++ b/xml/System.Windows.Forms/Screen.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a display device or multiple display devices on a single system.</summary>
@@ -215,12 +211,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -697,10 +687,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Screen</ReturnType>
diff --git a/xml/System.Windows.Forms/ScrollBar.xml b/xml/System.Windows.Forms/ScrollBar.xml
index b6f79b4654a..aaca4a0fdf6 100644
--- a/xml/System.Windows.Forms/ScrollBar.xml
+++ b/xml/System.Windows.Forms/ScrollBar.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Implements the basic functionality of a scroll bar control.</summary>
@@ -494,12 +490,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -535,10 +525,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.CreateParams</ReturnType>
@@ -697,14 +683,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -1386,12 +1364,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1424,12 +1396,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1461,12 +1427,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1512,12 +1472,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1572,12 +1526,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1947,14 +1895,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2023,12 +1963,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ScrollBarRenderer.xml b/xml/System.Windows.Forms/ScrollBarRenderer.xml
index a655dd4f0df..01f9721d8de 100644
--- a/xml/System.Windows.Forms/ScrollBarRenderer.xml
+++ b/xml/System.Windows.Forms/ScrollBarRenderer.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods used to render a scroll bar control with visual styles. This class cannot be inherited.</summary>
diff --git a/xml/System.Windows.Forms/ScrollProperties.xml b/xml/System.Windows.Forms/ScrollProperties.xml
index 2ac3556efa3..d47d5dc553e 100644
--- a/xml/System.Windows.Forms/ScrollProperties.xml
+++ b/xml/System.Windows.Forms/ScrollProperties.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates properties related to scrolling.</summary>
diff --git a/xml/System.Windows.Forms/ScrollableControl+DockPaddingEdges.xml b/xml/System.Windows.Forms/ScrollableControl+DockPaddingEdges.xml
index 733c358cb9c..31e4132ddba 100644
--- a/xml/System.Windows.Forms/ScrollableControl+DockPaddingEdges.xml
+++ b/xml/System.Windows.Forms/ScrollableControl+DockPaddingEdges.xml
@@ -184,12 +184,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ScrollableControl+DockPaddingEdgesConverter.xml b/xml/System.Windows.Forms/ScrollableControl+DockPaddingEdgesConverter.xml
index ce3ae0133d8..a91c40bac12 100644
--- a/xml/System.Windows.Forms/ScrollableControl+DockPaddingEdgesConverter.xml
+++ b/xml/System.Windows.Forms/ScrollableControl+DockPaddingEdgesConverter.xml
@@ -20,12 +20,6 @@
     <BaseTypeName>System.ComponentModel.TypeConverter</BaseTypeName>
   </Base>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>A <see cref="T:System.ComponentModel.TypeConverter" /> for the <see cref="T:System.Windows.Forms.ScrollableControl.DockPaddingEdges" /> class.</summary>
     <remarks>To be added.</remarks>
@@ -88,10 +82,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
@@ -145,12 +135,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ScrollableControl.xml b/xml/System.Windows.Forms/ScrollableControl.xml
index eb3ac3d20e6..d7f4ddf2f0f 100644
--- a/xml/System.Windows.Forms/ScrollableControl.xml
+++ b/xml/System.Windows.Forms/ScrollableControl.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines a base class for controls that support auto-scrolling behavior.</summary>
@@ -1147,14 +1143,6 @@ There is currently a limitation in Windows Forms that prevents all classes deriv
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ScrollEventHandler</ReturnType>
@@ -1208,12 +1196,6 @@ There is currently a limitation in Windows Forms that prevents all classes deriv
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/SearchForVirtualItemEventArgs.xml b/xml/System.Windows.Forms/SearchForVirtualItemEventArgs.xml
index 307f83c09f0..270f57f964a 100644
--- a/xml/System.Windows.Forms/SearchForVirtualItemEventArgs.xml
+++ b/xml/System.Windows.Forms/SearchForVirtualItemEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.ListView.SearchForVirtualItem" /> event.</summary>
diff --git a/xml/System.Windows.Forms/SelectedGridItemChangedEventArgs.xml b/xml/System.Windows.Forms/SelectedGridItemChangedEventArgs.xml
index 1cef26c6960..7c83a62f029 100644
--- a/xml/System.Windows.Forms/SelectedGridItemChangedEventArgs.xml
+++ b/xml/System.Windows.Forms/SelectedGridItemChangedEventArgs.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.PropertyGrid.SelectedGridItemChanged" /> event of the <see cref="T:System.Windows.Forms.PropertyGrid" /> control.</summary>
diff --git a/xml/System.Windows.Forms/SelectionRange.xml b/xml/System.Windows.Forms/SelectionRange.xml
index dd39c1e72b4..08dd4c87196 100644
--- a/xml/System.Windows.Forms/SelectionRange.xml
+++ b/xml/System.Windows.Forms/SelectionRange.xml
@@ -29,10 +29,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a date selection range in a month calendar control.</summary>
diff --git a/xml/System.Windows.Forms/SelectionRangeConverter.xml b/xml/System.Windows.Forms/SelectionRangeConverter.xml
index 267c578a23c..f0ecb4efa3f 100644
--- a/xml/System.Windows.Forms/SelectionRangeConverter.xml
+++ b/xml/System.Windows.Forms/SelectionRangeConverter.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.Windows.Forms.SelectionRange" /> objects to and from various other types.</summary>
@@ -114,12 +110,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -357,12 +347,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -464,10 +448,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of value cannot be statically discovered. The public parameterless constructor or the 'Default' static field may be trimmed from the Attribute's Type.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.PropertyDescriptorCollection</ReturnType>
diff --git a/xml/System.Windows.Forms/SendKeys.xml b/xml/System.Windows.Forms/SendKeys.xml
index 70a80b50483..8199f6ba4f7 100644
--- a/xml/System.Windows.Forms/SendKeys.xml
+++ b/xml/System.Windows.Forms/SendKeys.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods for sending keystrokes to an application.</summary>
diff --git a/xml/System.Windows.Forms/SplitContainer.xml b/xml/System.Windows.Forms/SplitContainer.xml
index 7c5b8c3e609..66d17ccf4d0 100644
--- a/xml/System.Windows.Forms/SplitContainer.xml
+++ b/xml/System.Windows.Forms/SplitContainer.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a control consisting of a movable bar that divides a container's display area into two resizable panels.</summary>
@@ -904,10 +900,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Control+ControlCollection</ReturnType>
@@ -939,12 +931,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -978,10 +964,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Control+ControlCollection</ReturnType>
@@ -1236,12 +1218,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1286,12 +1262,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1338,12 +1308,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1390,12 +1354,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1439,12 +1397,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1488,12 +1440,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1525,12 +1471,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1578,12 +1518,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1632,10 +1566,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1684,12 +1614,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1737,12 +1661,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1785,12 +1703,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1839,10 +1751,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1874,12 +1782,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1932,12 +1834,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2158,10 +2054,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.SplitterPanel</ReturnType>
@@ -2324,10 +2216,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.SplitterPanel</ReturnType>
@@ -3075,14 +2963,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/Splitter.xml b/xml/System.Windows.Forms/Splitter.xml
index 86ee8c83859..8a3cca97e61 100644
--- a/xml/System.Windows.Forms/Splitter.xml
+++ b/xml/System.Windows.Forms/Splitter.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a splitter control that enables the user to resize docked controls. <see cref="T:System.Windows.Forms.Splitter" /> has been replaced by <see cref="T:System.Windows.Forms.SplitContainer" /> and is provided only for compatibility with previous versions.</summary>
@@ -478,12 +474,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -518,10 +508,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.CreateParams</ReturnType>
@@ -563,10 +549,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Cursor</ReturnType>
@@ -759,14 +741,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -1332,12 +1306,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1376,12 +1344,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1420,12 +1382,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1464,12 +1420,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1508,12 +1458,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1560,12 +1504,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1942,14 +1880,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2031,12 +1961,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/SplitterPanel.xml b/xml/System.Windows.Forms/SplitterPanel.xml
index dc73aa79679..e1456996458 100644
--- a/xml/System.Windows.Forms/SplitterPanel.xml
+++ b/xml/System.Windows.Forms/SplitterPanel.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Creates a panel that is associated with a <see cref="T:System.Windows.Forms.SplitContainer" />.</summary>
@@ -83,12 +79,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="owner" Type="System.Windows.Forms.SplitContainer" />
       </Parameters>
@@ -448,10 +438,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ScrollableControl+DockPaddingEdges</ReturnType>
@@ -704,14 +690,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/StatusStrip.xml b/xml/System.Windows.Forms/StatusStrip.xml
index 3f499ec766e..9de55393880 100644
--- a/xml/System.Windows.Forms/StatusStrip.xml
+++ b/xml/System.Windows.Forms/StatusStrip.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Windows status bar control.</summary>
@@ -199,12 +195,6 @@ The following items are specifically designed to work seamlessly with both <xref
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripItem</ReturnType>
       </ReturnValue>
@@ -706,14 +696,6 @@ Use the `LayoutStyle` property to get or set how items are arranged on the <xref
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/SystemInformation.xml b/xml/System.Windows.Forms/SystemInformation.xml
index fa90eee8a53..403d0b2c54e 100644
--- a/xml/System.Windows.Forms/SystemInformation.xml
+++ b/xml/System.Windows.Forms/SystemInformation.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information about the current system environment.</summary>
diff --git a/xml/System.Windows.Forms/TabControl+ControlCollection.xml b/xml/System.Windows.Forms/TabControl+ControlCollection.xml
index 6c911775512..62adcaa44b2 100644
--- a/xml/System.Windows.Forms/TabControl+ControlCollection.xml
+++ b/xml/System.Windows.Forms/TabControl+ControlCollection.xml
@@ -91,12 +91,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -140,12 +134,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/TabControl+TabPageCollection.xml b/xml/System.Windows.Forms/TabControl+TabPageCollection.xml
index 25db9f4858a..2513ad90920 100644
--- a/xml/System.Windows.Forms/TabControl+TabPageCollection.xml
+++ b/xml/System.Windows.Forms/TabControl+TabPageCollection.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains a collection of <see cref="T:System.Windows.Forms.TabPage" /> objects.</summary>
@@ -72,12 +68,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="owner" Type="System.Windows.Forms.TabControl" />
       </Parameters>
@@ -155,12 +145,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -351,12 +335,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -456,12 +434,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -604,12 +576,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IEnumerator</ReturnType>
       </ReturnValue>
@@ -653,12 +619,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -795,12 +755,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1044,14 +998,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TabPage</ReturnType>
@@ -1133,12 +1079,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1276,12 +1216,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1378,10 +1312,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Windows.Forms/TabControl.xml b/xml/System.Windows.Forms/TabControl.xml
index d7b300d1cc4..6f27fbe2084 100644
--- a/xml/System.Windows.Forms/TabControl.xml
+++ b/xml/System.Windows.Forms/TabControl.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Manages a related set of tab pages.</summary>
@@ -352,14 +348,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -402,14 +390,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Image</ReturnType>
@@ -453,14 +433,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -546,14 +518,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -732,14 +696,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TabControlEventHandler</ReturnType>
@@ -810,14 +766,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TabControlCancelEventHandler</ReturnType>
@@ -1160,14 +1108,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DrawItemEventHandler</ReturnType>
@@ -1331,14 +1271,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1638,14 +1570,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ImageList</ReturnType>
@@ -2588,14 +2512,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.PaintEventHandler</ReturnType>
@@ -2753,14 +2669,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -2905,14 +2813,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TabControlEventHandler</ReturnType>
@@ -3042,14 +2942,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -3119,14 +3011,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TabPage</ReturnType>
@@ -3186,14 +3070,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TabControlCancelEventHandler</ReturnType>
@@ -3717,14 +3593,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/TabControlCancelEventArgs.xml b/xml/System.Windows.Forms/TabControlCancelEventArgs.xml
index b84bfa76f17..1a148457b69 100644
--- a/xml/System.Windows.Forms/TabControlCancelEventArgs.xml
+++ b/xml/System.Windows.Forms/TabControlCancelEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.TabControl.Selecting" /> and <see cref="E:System.Windows.Forms.TabControl.Deselecting" /> events of a <see cref="T:System.Windows.Forms.TabControl" /> control.</summary>
diff --git a/xml/System.Windows.Forms/TabControlEventArgs.xml b/xml/System.Windows.Forms/TabControlEventArgs.xml
index e60893213d5..1a75671f73f 100644
--- a/xml/System.Windows.Forms/TabControlEventArgs.xml
+++ b/xml/System.Windows.Forms/TabControlEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.TabControl.Selected" /> and <see cref="E:System.Windows.Forms.TabControl.Deselected" /> events of a <see cref="T:System.Windows.Forms.TabControl" /> control.</summary>
diff --git a/xml/System.Windows.Forms/TabPage+TabPageControlCollection.xml b/xml/System.Windows.Forms/TabPage+TabPageControlCollection.xml
index 75d2047704d..9e7e7844185 100644
--- a/xml/System.Windows.Forms/TabPage+TabPageControlCollection.xml
+++ b/xml/System.Windows.Forms/TabPage+TabPageControlCollection.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains the collection of controls that the <see cref="T:System.Windows.Forms.TabPage" /> uses.</summary>
@@ -59,10 +55,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="owner" Type="System.Windows.Forms.TabPage" />
@@ -93,12 +85,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/TabPage.xml b/xml/System.Windows.Forms/TabPage.xml
index 48383406421..5361bc0487f 100644
--- a/xml/System.Windows.Forms/TabPage.xml
+++ b/xml/System.Windows.Forms/TabPage.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a single tab page in a <see cref="T:System.Windows.Forms.TabControl" />.</summary>
@@ -419,12 +415,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -454,12 +444,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Control+ControlCollection</ReturnType>
       </ReturnValue>
@@ -807,14 +791,6 @@ If you set the <xref:System.Windows.Forms.TabPage.ImageKey%2A> property, the <xr
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1016,12 +992,6 @@ If you set the <xref:System.Windows.Forms.TabPage.ImageKey%2A> property, the <xr
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1071,12 +1041,6 @@ If you set the <xref:System.Windows.Forms.TabPage.ImageKey%2A> property, the <xr
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1122,12 +1086,6 @@ If you set the <xref:System.Windows.Forms.TabPage.ImageKey%2A> property, the <xr
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1440,14 +1398,6 @@ If you set the <xref:System.Windows.Forms.TabPage.ImageKey%2A> property, the <xr
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1547,14 +1497,6 @@ If you set the <xref:System.Windows.Forms.TabPage.ImageKey%2A> property, the <xr
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1602,12 +1544,6 @@ If you set the <xref:System.Windows.Forms.TabPage.ImageKey%2A> property, the <xr
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/TabRenderer.xml b/xml/System.Windows.Forms/TabRenderer.xml
index 5114ed9684d..682ff234088 100644
--- a/xml/System.Windows.Forms/TabRenderer.xml
+++ b/xml/System.Windows.Forms/TabRenderer.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods used to render a tab control with visual styles. This class cannot be inherited.</summary>
@@ -196,10 +192,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -325,10 +317,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -404,12 +392,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/TableLayoutCellPaintEventArgs.xml b/xml/System.Windows.Forms/TableLayoutCellPaintEventArgs.xml
index d7aecfcba64..f47e589f417 100644
--- a/xml/System.Windows.Forms/TableLayoutCellPaintEventArgs.xml
+++ b/xml/System.Windows.Forms/TableLayoutCellPaintEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.TableLayoutPanel.CellPaint" /> event.</summary>
diff --git a/xml/System.Windows.Forms/TableLayoutColumnStyleCollection.xml b/xml/System.Windows.Forms/TableLayoutColumnStyleCollection.xml
index f51861d2f34..d891a9805c1 100644
--- a/xml/System.Windows.Forms/TableLayoutColumnStyleCollection.xml
+++ b/xml/System.Windows.Forms/TableLayoutColumnStyleCollection.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A collection that stores <see cref="T:System.Windows.Forms.ColumnStyle" /> objects.</summary>
diff --git a/xml/System.Windows.Forms/TableLayoutControlCollection.xml b/xml/System.Windows.Forms/TableLayoutControlCollection.xml
index 733ecfc560f..8593c868135 100644
--- a/xml/System.Windows.Forms/TableLayoutControlCollection.xml
+++ b/xml/System.Windows.Forms/TableLayoutControlCollection.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of child controls in a table layout container.</summary>
diff --git a/xml/System.Windows.Forms/TableLayoutPanel.xml b/xml/System.Windows.Forms/TableLayoutPanel.xml
index 06955e98ab1..0e2c1e7a76b 100644
--- a/xml/System.Windows.Forms/TableLayoutPanel.xml
+++ b/xml/System.Windows.Forms/TableLayoutPanel.xml
@@ -80,10 +80,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a panel that dynamically lays out its contents in a grid composed of rows and columns.</summary>
@@ -300,14 +296,6 @@ Setting this value causes the panel to redraw itself and its contents.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TableLayoutCellPaintEventHandler</ReturnType>
@@ -788,12 +776,6 @@ Setting this value causes the panel to redraw itself and its contents.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Control</ReturnType>
       </ReturnValue>
@@ -846,12 +828,6 @@ Setting this value causes the panel to redraw itself and its contents.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TableLayoutPanelCellPosition</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/TableLayoutPanelCellPosition.xml b/xml/System.Windows.Forms/TableLayoutPanelCellPosition.xml
index 9bb2e3865a7..1f9683209d6 100644
--- a/xml/System.Windows.Forms/TableLayoutPanelCellPosition.xml
+++ b/xml/System.Windows.Forms/TableLayoutPanelCellPosition.xml
@@ -155,10 +155,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -389,10 +385,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/TableLayoutRowStyleCollection.xml b/xml/System.Windows.Forms/TableLayoutRowStyleCollection.xml
index 77215acb035..a5ec56315b9 100644
--- a/xml/System.Windows.Forms/TableLayoutRowStyleCollection.xml
+++ b/xml/System.Windows.Forms/TableLayoutRowStyleCollection.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A collection that stores <see cref="T:System.Windows.Forms.RowStyle" /> objects.</summary>
diff --git a/xml/System.Windows.Forms/TableLayoutSettings.xml b/xml/System.Windows.Forms/TableLayoutSettings.xml
index ec387ba81a3..005df575b4c 100644
--- a/xml/System.Windows.Forms/TableLayoutSettings.xml
+++ b/xml/System.Windows.Forms/TableLayoutSettings.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Collects the characteristics associated with table layouts.</summary>
diff --git a/xml/System.Windows.Forms/TableLayoutStyle.xml b/xml/System.Windows.Forms/TableLayoutStyle.xml
index 83d081b1b06..6af9b53ba89 100644
--- a/xml/System.Windows.Forms/TableLayoutStyle.xml
+++ b/xml/System.Windows.Forms/TableLayoutStyle.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="windowsdesktop-9.0">
       <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors)&gt;]</AttributeName>
diff --git a/xml/System.Windows.Forms/TableLayoutStyleCollection.xml b/xml/System.Windows.Forms/TableLayoutStyleCollection.xml
index 80fd45b72e4..08f3ba358f4 100644
--- a/xml/System.Windows.Forms/TableLayoutStyleCollection.xml
+++ b/xml/System.Windows.Forms/TableLayoutStyleCollection.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Implements the basic functionality for a collection of table layout styles.</summary>
@@ -89,12 +85,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -224,14 +214,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TableLayoutStyle</ReturnType>
@@ -323,12 +305,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -414,10 +390,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -456,12 +428,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IEnumerator</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/TaskDialog.xml b/xml/System.Windows.Forms/TaskDialog.xml
index 8b730485341..dd82c87bb0a 100644
--- a/xml/System.Windows.Forms/TaskDialog.xml
+++ b/xml/System.Windows.Forms/TaskDialog.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A task dialog allows to display information and get simple input from the user. It is similar to a <see cref="T:System.Windows.Forms.MessageBox" /> (in that it is formatted by the operating system) but provides a lot more features.</summary>
diff --git a/xml/System.Windows.Forms/TaskDialogButton.xml b/xml/System.Windows.Forms/TaskDialogButton.xml
index 78b8f6c56d5..823fb70ec8a 100644
--- a/xml/System.Windows.Forms/TaskDialogButton.xml
+++ b/xml/System.Windows.Forms/TaskDialogButton.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a button control of a task dialog.</summary>
@@ -83,12 +79,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="enabled" Type="System.Boolean" />
@@ -207,14 +197,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -336,12 +318,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -507,12 +483,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -544,12 +514,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -675,14 +639,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/TaskDialogButtonCollection.xml b/xml/System.Windows.Forms/TaskDialogButtonCollection.xml
index d9d562abe27..07c4b442b62 100644
--- a/xml/System.Windows.Forms/TaskDialogButtonCollection.xml
+++ b/xml/System.Windows.Forms/TaskDialogButtonCollection.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Windows.Forms.TaskDialogButton" /> objects.</summary>
diff --git a/xml/System.Windows.Forms/TaskDialogCommandLinkButton.xml b/xml/System.Windows.Forms/TaskDialogCommandLinkButton.xml
index 98672c61c3c..76432edec49 100644
--- a/xml/System.Windows.Forms/TaskDialogCommandLinkButton.xml
+++ b/xml/System.Windows.Forms/TaskDialogCommandLinkButton.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a command link button control of a task dialog.</summary>
diff --git a/xml/System.Windows.Forms/TaskDialogControl.xml b/xml/System.Windows.Forms/TaskDialogControl.xml
index 75471c0bd57..434598f5bf9 100644
--- a/xml/System.Windows.Forms/TaskDialogControl.xml
+++ b/xml/System.Windows.Forms/TaskDialogControl.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a control of a task dialog.</summary>
diff --git a/xml/System.Windows.Forms/TaskDialogExpander.xml b/xml/System.Windows.Forms/TaskDialogExpander.xml
index c6db4e235d9..b9d238f1b5d 100644
--- a/xml/System.Windows.Forms/TaskDialogExpander.xml
+++ b/xml/System.Windows.Forms/TaskDialogExpander.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an expander button and the associated expanded area of a task dialog.</summary>
@@ -270,12 +266,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/TaskDialogFootnote.xml b/xml/System.Windows.Forms/TaskDialogFootnote.xml
index dfd930b36b5..cc09e5d42cc 100644
--- a/xml/System.Windows.Forms/TaskDialogFootnote.xml
+++ b/xml/System.Windows.Forms/TaskDialogFootnote.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the footnote area of a task dialog.</summary>
@@ -130,12 +126,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TaskDialogFootnote</ReturnType>
       </ReturnValue>
@@ -202,12 +192,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/TaskDialogIcon.xml b/xml/System.Windows.Forms/TaskDialogIcon.xml
index b826a241719..9c9cea2f3fa 100644
--- a/xml/System.Windows.Forms/TaskDialogIcon.xml
+++ b/xml/System.Windows.Forms/TaskDialogIcon.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an icon that can be shown in the main area of a task dialog (by setting the <see cref="P:System.Windows.Forms.TaskDialogPage.Icon" /> property) or in the footnote of a task dialog (by setting the <see cref="P:System.Windows.Forms.TaskDialogFootnote.Icon" /> property).</summary>
diff --git a/xml/System.Windows.Forms/TaskDialogLinkClickedEventArgs.xml b/xml/System.Windows.Forms/TaskDialogLinkClickedEventArgs.xml
index f0074ad1ad0..3df31487830 100644
--- a/xml/System.Windows.Forms/TaskDialogLinkClickedEventArgs.xml
+++ b/xml/System.Windows.Forms/TaskDialogLinkClickedEventArgs.xml
@@ -19,10 +19,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.TaskDialogPage.LinkClicked" /> event.</summary>
diff --git a/xml/System.Windows.Forms/TaskDialogPage.xml b/xml/System.Windows.Forms/TaskDialogPage.xml
index 07c39120b4f..2a95afe5397 100644
--- a/xml/System.Windows.Forms/TaskDialogPage.xml
+++ b/xml/System.Windows.Forms/TaskDialogPage.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a page of content of a task dialog.</summary>
@@ -188,14 +184,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TaskDialogButtonCollection</ReturnType>
@@ -578,12 +566,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -630,12 +612,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -664,12 +640,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -698,12 +668,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -729,12 +693,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -802,14 +760,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TaskDialogRadioButtonCollection</ReturnType>
diff --git a/xml/System.Windows.Forms/TaskDialogRadioButton.xml b/xml/System.Windows.Forms/TaskDialogRadioButton.xml
index d47644b459e..f90d4492859 100644
--- a/xml/System.Windows.Forms/TaskDialogRadioButton.xml
+++ b/xml/System.Windows.Forms/TaskDialogRadioButton.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a radio button control of a task dialog.</summary>
@@ -225,12 +221,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/TaskDialogRadioButtonCollection.xml b/xml/System.Windows.Forms/TaskDialogRadioButtonCollection.xml
index 2ca9416a5bd..2845fbc2a39 100644
--- a/xml/System.Windows.Forms/TaskDialogRadioButtonCollection.xml
+++ b/xml/System.Windows.Forms/TaskDialogRadioButtonCollection.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Windows.Forms.TaskDialogRadioButton" /> objects.</summary>
diff --git a/xml/System.Windows.Forms/TaskDialogVerificationCheckBox.xml b/xml/System.Windows.Forms/TaskDialogVerificationCheckBox.xml
index 26579ff9660..60495c8c310 100644
--- a/xml/System.Windows.Forms/TaskDialogVerificationCheckBox.xml
+++ b/xml/System.Windows.Forms/TaskDialogVerificationCheckBox.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a verification checkbox control of a task dialog.</summary>
@@ -156,12 +152,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TaskDialogVerificationCheckBox</ReturnType>
       </ReturnValue>
@@ -225,12 +215,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/TextBox.xml b/xml/System.Windows.Forms/TextBox.xml
index a8d157c31ff..d05950a4e69 100644
--- a/xml/System.Windows.Forms/TextBox.xml
+++ b/xml/System.Windows.Forms/TextBox.xml
@@ -41,10 +41,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Windows text box control.</summary>
@@ -1108,12 +1104,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1429,14 +1419,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/TextBoxBase.xml b/xml/System.Windows.Forms/TextBoxBase.xml
index 3a07797403c..9e09864d5f6 100644
--- a/xml/System.Windows.Forms/TextBoxBase.xml
+++ b/xml/System.Windows.Forms/TextBoxBase.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Implements the basic functionality required by text controls.</summary>
@@ -1022,12 +1018,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -1090,10 +1080,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.CreateParams</ReturnType>
@@ -1178,10 +1164,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Cursor</ReturnType>
@@ -1811,14 +1793,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String[]</ReturnType>
@@ -2224,12 +2198,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2299,12 +2267,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2350,12 +2312,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2388,12 +2344,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2426,12 +2376,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2464,12 +2408,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2515,12 +2453,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2565,12 +2497,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2602,12 +2528,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2652,12 +2572,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2696,12 +2610,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2746,12 +2654,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3349,14 +3251,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -3673,14 +3567,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -3779,12 +3665,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/TextBoxRenderer.xml b/xml/System.Windows.Forms/TextBoxRenderer.xml
index 7db02952532..db641f5fbe3 100644
--- a/xml/System.Windows.Forms/TextBoxRenderer.xml
+++ b/xml/System.Windows.Forms/TextBoxRenderer.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods used to render a text box control with visual styles. This class cannot be inherited.</summary>
@@ -87,12 +83,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/TextRenderer.xml b/xml/System.Windows.Forms/TextRenderer.xml
index 4baff2dd0a1..14761b11996 100644
--- a/xml/System.Windows.Forms/TextRenderer.xml
+++ b/xml/System.Windows.Forms/TextRenderer.xml
@@ -81,12 +81,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -187,12 +181,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -264,12 +252,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -335,12 +317,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -557,12 +533,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -635,12 +605,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -715,12 +679,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -790,12 +748,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -983,12 +935,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1065,12 +1011,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1191,12 +1131,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Size</ReturnType>
       </ReturnValue>
@@ -1295,12 +1229,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Size</ReturnType>
       </ReturnValue>
@@ -1399,12 +1327,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Size</ReturnType>
       </ReturnValue>
@@ -1507,12 +1429,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Size</ReturnType>
       </ReturnValue>
@@ -1619,12 +1535,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Size</ReturnType>
       </ReturnValue>
@@ -1738,12 +1648,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Size</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ThreadExceptionDialog.xml b/xml/System.Windows.Forms/ThreadExceptionDialog.xml
index d09968f7ab8..29e67fe4e48 100644
--- a/xml/System.Windows.Forms/ThreadExceptionDialog.xml
+++ b/xml/System.Windows.Forms/ThreadExceptionDialog.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Implements a dialog box that is displayed when an unhandled exception occurs in a thread.</summary>
@@ -155,14 +151,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/Timer.xml b/xml/System.Windows.Forms/Timer.xml
index d6d47aa0fa6..0b77e0af1e9 100644
--- a/xml/System.Windows.Forms/Timer.xml
+++ b/xml/System.Windows.Forms/Timer.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Implements a timer that raises an event at user-defined intervals. This timer is optimized for use in Windows Forms applications and must be used in a window.</summary>
@@ -499,14 +495,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Windows.Forms/ToolStrip+ToolStripAccessibleObject.xml b/xml/System.Windows.Forms/ToolStrip+ToolStripAccessibleObject.xml
index a43020e45bc..62976effad0 100644
--- a/xml/System.Windows.Forms/ToolStrip+ToolStripAccessibleObject.xml
+++ b/xml/System.Windows.Forms/ToolStrip+ToolStripAccessibleObject.xml
@@ -86,12 +86,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -154,12 +148,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ToolStrip.xml b/xml/System.Windows.Forms/ToolStrip.xml
index cdb0fe6e001..ab726251328 100644
--- a/xml/System.Windows.Forms/ToolStrip.xml
+++ b/xml/System.Windows.Forms/ToolStrip.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a container for Windows toolbar objects.</summary>
@@ -724,14 +720,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -819,14 +807,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -873,14 +853,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.BindingContext</ReturnType>
@@ -1024,14 +996,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1088,14 +1052,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ControlEventHandler</ReturnType>
@@ -1144,14 +1100,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ControlEventHandler</ReturnType>
@@ -1287,12 +1235,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripItem</ReturnType>
       </ReturnValue>
@@ -1329,12 +1271,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.LayoutSettings</ReturnType>
       </ReturnValue>
@@ -1426,14 +1362,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1890,14 +1818,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -2008,14 +1928,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -2073,10 +1985,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Control</ReturnType>
@@ -2122,10 +2030,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Control</ReturnType>
@@ -2177,12 +2081,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripItem</ReturnType>
       </ReturnValue>
@@ -2216,12 +2114,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripItem</ReturnType>
       </ReturnValue>
@@ -2256,12 +2148,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripItem</ReturnType>
       </ReturnValue>
@@ -2573,14 +2459,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ImageList</ReturnType>
@@ -2841,14 +2719,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripItemEventHandler</ReturnType>
@@ -2897,14 +2767,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripItemClickedEventHandler</ReturnType>
@@ -2953,14 +2815,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripItemEventHandler</ReturnType>
@@ -3066,14 +2920,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -3179,14 +3025,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.LayoutSettings</ReturnType>
@@ -3270,14 +3108,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -4616,14 +4446,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.PaintEventHandler</ReturnType>
@@ -4841,14 +4663,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/ToolStripArrowRenderEventArgs.xml b/xml/System.Windows.Forms/ToolStripArrowRenderEventArgs.xml
index 4d1a453519f..cbc508a67cb 100644
--- a/xml/System.Windows.Forms/ToolStripArrowRenderEventArgs.xml
+++ b/xml/System.Windows.Forms/ToolStripArrowRenderEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.ToolStripRenderer.RenderArrow" /> event.</summary>
@@ -301,10 +297,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripItem</ReturnType>
diff --git a/xml/System.Windows.Forms/ToolStripButton.xml b/xml/System.Windows.Forms/ToolStripButton.xml
index a3911d8772e..01b76c20cfe 100644
--- a/xml/System.Windows.Forms/ToolStripButton.xml
+++ b/xml/System.Windows.Forms/ToolStripButton.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a selectable <see cref="T:System.Windows.Forms.ToolStripItem" /> that can contain text and images.</summary>
@@ -608,10 +604,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
@@ -711,12 +703,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -759,12 +745,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -807,12 +787,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -855,12 +829,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ToolStripComboBox.xml b/xml/System.Windows.Forms/ToolStripComboBox.xml
index 8ac74badcb0..b9cadef3f95 100644
--- a/xml/System.Windows.Forms/ToolStripComboBox.xml
+++ b/xml/System.Windows.Forms/ToolStripComboBox.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a <see cref="T:System.Windows.Forms.ToolStripComboBox" /> that is properly rendered in a <see cref="T:System.Windows.Forms.ToolStrip" />.</summary>
@@ -118,12 +114,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" />
       </Parameters>
@@ -393,14 +383,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Image</ReturnType>
@@ -673,14 +655,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -721,14 +695,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -779,14 +745,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -945,14 +903,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1121,12 +1071,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1166,12 +1110,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1222,12 +1160,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1267,12 +1199,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1829,12 +1755,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1924,12 +1844,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2097,14 +2011,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -2167,14 +2073,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -2397,14 +2295,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/ToolStripContainer.xml b/xml/System.Windows.Forms/ToolStripContainer.xml
index 3d2b5198405..a660b297449 100644
--- a/xml/System.Windows.Forms/ToolStripContainer.xml
+++ b/xml/System.Windows.Forms/ToolStripContainer.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides panels on each side of the form and a central panel that can hold one or more controls.</summary>
@@ -563,10 +559,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripPanel</ReturnType>
@@ -753,10 +745,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripContentPanel</ReturnType>
@@ -898,10 +886,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Control+ControlCollection</ReturnType>
@@ -933,12 +917,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -972,10 +950,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Control+ControlCollection</ReturnType>
@@ -1022,14 +996,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Cursor</ReturnType>
@@ -1253,10 +1219,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripPanel</ReturnType>
@@ -1333,12 +1295,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1369,12 +1325,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1434,10 +1384,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripPanel</ReturnType>
@@ -1531,10 +1477,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripPanel</ReturnType>
diff --git a/xml/System.Windows.Forms/ToolStripContentPanel.xml b/xml/System.Windows.Forms/ToolStripContentPanel.xml
index 31f516533df..4898526b88c 100644
--- a/xml/System.Windows.Forms/ToolStripContentPanel.xml
+++ b/xml/System.Windows.Forms/ToolStripContentPanel.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the center panel of a <see cref="T:System.Windows.Forms.ToolStripContainer" /> control.</summary>
@@ -932,14 +928,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -975,12 +963,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1017,10 +999,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1069,10 +1047,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1118,12 +1092,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1179,14 +1147,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripRenderer</ReturnType>
diff --git a/xml/System.Windows.Forms/ToolStripContentPanelRenderEventArgs.xml b/xml/System.Windows.Forms/ToolStripContentPanelRenderEventArgs.xml
index b1db9c7a256..5fd0a5dec3e 100644
--- a/xml/System.Windows.Forms/ToolStripContentPanelRenderEventArgs.xml
+++ b/xml/System.Windows.Forms/ToolStripContentPanelRenderEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.ToolStripContentPanel.RendererChanged" /> event.</summary>
diff --git a/xml/System.Windows.Forms/ToolStripControlHost+ToolStripHostedControlAccessibleObject.xml b/xml/System.Windows.Forms/ToolStripControlHost+ToolStripHostedControlAccessibleObject.xml
index 032b42f700f..586daaa6c21 100644
--- a/xml/System.Windows.Forms/ToolStripControlHost+ToolStripHostedControlAccessibleObject.xml
+++ b/xml/System.Windows.Forms/ToolStripControlHost+ToolStripHostedControlAccessibleObject.xml
@@ -23,10 +23,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the accessible object control host responsible for accessible navigation within the <see cref="T:System.Windows.Forms.ToolStrip" /> standard items and hosted controls like TextBox, ComboBox, ProgressBar, etc.</summary>
@@ -51,12 +47,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="toolStripHostedControl" Type="System.Windows.Forms.Control" />
         <Parameter Name="toolStripControlHost" Type="System.Windows.Forms.ToolStripControlHost">
diff --git a/xml/System.Windows.Forms/ToolStripControlHost.xml b/xml/System.Windows.Forms/ToolStripControlHost.xml
index cc53b8a041c..d0fa95a27b3 100644
--- a/xml/System.Windows.Forms/ToolStripControlHost.xml
+++ b/xml/System.Windows.Forms/ToolStripControlHost.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Hosts custom controls or Windows Forms controls.</summary>
@@ -196,14 +192,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Image</ReturnType>
@@ -578,14 +566,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -749,14 +729,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -983,14 +955,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1054,14 +1018,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Image</ReturnType>
@@ -1248,14 +1204,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.KeyEventHandler</ReturnType>
@@ -1307,14 +1255,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.KeyPressEventHandler</ReturnType>
@@ -1366,14 +1306,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.KeyEventHandler</ReturnType>
@@ -1425,14 +1357,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1492,14 +1416,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1982,12 +1898,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2022,12 +1932,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2084,12 +1988,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2550,14 +2448,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.ISite</ReturnType>
@@ -2799,14 +2689,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -2858,14 +2740,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.CancelEventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/ToolStripDropDown+ToolStripDropDownAccessibleObject.xml b/xml/System.Windows.Forms/ToolStripDropDown+ToolStripDropDownAccessibleObject.xml
index 504af168c95..a60364db140 100644
--- a/xml/System.Windows.Forms/ToolStripDropDown+ToolStripDropDownAccessibleObject.xml
+++ b/xml/System.Windows.Forms/ToolStripDropDown+ToolStripDropDownAccessibleObject.xml
@@ -64,10 +64,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="owner" Type="System.Windows.Forms.ToolStripDropDown" />
diff --git a/xml/System.Windows.Forms/ToolStripDropDown.xml b/xml/System.Windows.Forms/ToolStripDropDown.xml
index e317d990505..bb423d3b4a7 100644
--- a/xml/System.Windows.Forms/ToolStripDropDown.xml
+++ b/xml/System.Windows.Forms/ToolStripDropDown.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a control that allows the user to select a single item from a list that's displayed when the user clicks a <see cref="T:System.Windows.Forms.ToolStripDropDownButton" />.
@@ -909,12 +905,6 @@ Use the <xref:System.Windows.Forms.ToolStripDropDown> to display drop-down lists
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -1008,10 +998,6 @@ Use the <xref:System.Windows.Forms.ToolStripDropDown> to display drop-down lists
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.CreateParams</ReturnType>
@@ -1391,14 +1377,6 @@ Use the <xref:System.Windows.Forms.ToolStripDropDown> to display drop-down lists
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -2180,12 +2158,6 @@ Use the <xref:System.Windows.Forms.ToolStripDropDown> to display drop-down lists
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2228,12 +2200,6 @@ Use the <xref:System.Windows.Forms.ToolStripDropDown> to display drop-down lists
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2276,12 +2242,6 @@ Use the <xref:System.Windows.Forms.ToolStripDropDown> to display drop-down lists
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2324,12 +2284,6 @@ Use the <xref:System.Windows.Forms.ToolStripDropDown> to display drop-down lists
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2372,12 +2326,6 @@ Use the <xref:System.Windows.Forms.ToolStripDropDown> to display drop-down lists
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2420,12 +2368,6 @@ Use the <xref:System.Windows.Forms.ToolStripDropDown> to display drop-down lists
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2468,12 +2410,6 @@ Use the <xref:System.Windows.Forms.ToolStripDropDown> to display drop-down lists
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2516,12 +2452,6 @@ Use the <xref:System.Windows.Forms.ToolStripDropDown> to display drop-down lists
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2564,12 +2494,6 @@ Use the <xref:System.Windows.Forms.ToolStripDropDown> to display drop-down lists
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2612,12 +2536,6 @@ Use the <xref:System.Windows.Forms.ToolStripDropDown> to display drop-down lists
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2807,10 +2725,6 @@ Use the <xref:System.Windows.Forms.ToolStripDropDown> to display drop-down lists
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripOverflowButton</ReturnType>
@@ -3521,12 +3435,6 @@ if (CanSelect && IsMnemonic(charCode, MyControl.Text) {
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3560,12 +3468,6 @@ if (CanSelect && IsMnemonic(charCode, MyControl.Text) {
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3611,12 +3513,6 @@ if (CanSelect && IsMnemonic(charCode, MyControl.Text) {
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ToolStripDropDownButton.xml b/xml/System.Windows.Forms/ToolStripDropDownButton.xml
index 788488e14c0..a6d1b46f87a 100644
--- a/xml/System.Windows.Forms/ToolStripDropDownButton.xml
+++ b/xml/System.Windows.Forms/ToolStripDropDownButton.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a control that when clicked displays an associated <see cref="T:System.Windows.Forms.ToolStripDropDown" /> from which the user can select a single item.</summary>
@@ -120,12 +116,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="image" Type="System.Drawing.Image" />
       </Parameters>
@@ -154,12 +144,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
       </Parameters>
@@ -188,12 +172,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
@@ -224,12 +202,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
@@ -262,12 +234,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
@@ -311,12 +277,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
diff --git a/xml/System.Windows.Forms/ToolStripDropDownItem.xml b/xml/System.Windows.Forms/ToolStripDropDownItem.xml
index 48b6f31c9bf..d6dda7e3596 100644
--- a/xml/System.Windows.Forms/ToolStripDropDownItem.xml
+++ b/xml/System.Windows.Forms/ToolStripDropDownItem.xml
@@ -36,10 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides basic functionality for controls that display a <see cref="T:System.Windows.Forms.ToolStripDropDown" /> when a <see cref="T:System.Windows.Forms.ToolStripDropDownButton" />, <see cref="T:System.Windows.Forms.ToolStripMenuItem" />, or <see cref="T:System.Windows.Forms.ToolStripSplitButton" /> control is clicked.</summary>
@@ -138,12 +134,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
@@ -183,12 +173,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
@@ -239,12 +223,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
@@ -445,14 +423,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -535,14 +505,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripItemClickedEventHandler</ReturnType>
@@ -666,14 +628,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -724,14 +678,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/ToolStripDropDownItemAccessibleObject.xml b/xml/System.Windows.Forms/ToolStripDropDownItemAccessibleObject.xml
index fa47e5318a4..92bd0220c07 100644
--- a/xml/System.Windows.Forms/ToolStripDropDownItemAccessibleObject.xml
+++ b/xml/System.Windows.Forms/ToolStripDropDownItemAccessibleObject.xml
@@ -28,14 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides information that accessibility applications use to adjust the user interface of a <see cref="T:System.Windows.Forms.ToolStripDropDown" /> for users with impairments.</summary>
@@ -65,10 +57,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="item" Type="System.Windows.Forms.ToolStripDropDownItem" />
@@ -136,12 +124,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ToolStripDropDownMenu.xml b/xml/System.Windows.Forms/ToolStripDropDownMenu.xml
index d27099042d8..000dcc1e546 100644
--- a/xml/System.Windows.Forms/ToolStripDropDownMenu.xml
+++ b/xml/System.Windows.Forms/ToolStripDropDownMenu.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides basic functionality for the <see cref="T:System.Windows.Forms.ContextMenuStrip" /> control.</summary>
@@ -150,12 +146,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripItem</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ToolStripGripRenderEventArgs.xml b/xml/System.Windows.Forms/ToolStripGripRenderEventArgs.xml
index 06940677256..4d2931d91a9 100644
--- a/xml/System.Windows.Forms/ToolStripGripRenderEventArgs.xml
+++ b/xml/System.Windows.Forms/ToolStripGripRenderEventArgs.xml
@@ -59,10 +59,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="g" Type="System.Drawing.Graphics" />
diff --git a/xml/System.Windows.Forms/ToolStripItem+ToolStripItemAccessibleObject.xml b/xml/System.Windows.Forms/ToolStripItem+ToolStripItemAccessibleObject.xml
index 014e08c2ea0..8847661bdd6 100644
--- a/xml/System.Windows.Forms/ToolStripItem+ToolStripItemAccessibleObject.xml
+++ b/xml/System.Windows.Forms/ToolStripItem+ToolStripItemAccessibleObject.xml
@@ -52,12 +52,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="ownerItem" Type="System.Windows.Forms.ToolStripItem" />
       </Parameters>
@@ -148,10 +142,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -300,10 +290,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -474,12 +460,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ToolStripItem.xml b/xml/System.Windows.Forms/ToolStripItem.xml
index d1e24edf836..49fa8582af1 100644
--- a/xml/System.Windows.Forms/ToolStripItem.xml
+++ b/xml/System.Windows.Forms/ToolStripItem.xml
@@ -64,10 +64,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the abstract base class that manages events and layout for all the elements that a <see cref="T:System.Windows.Forms.ToolStrip" /> or <see cref="T:System.Windows.Forms.ToolStripDropDown" /> can contain.</summary>
@@ -257,10 +253,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
@@ -1492,10 +1484,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
@@ -1918,10 +1906,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DragDropEffects</ReturnType>
@@ -1965,10 +1949,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DragDropEffects</ReturnType>
@@ -2483,14 +2463,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -3047,14 +3019,6 @@ For example, consider a button control whose <xref:System.Windows.Forms.ImageLis
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -4066,12 +4030,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4119,10 +4077,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4206,12 +4160,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4267,10 +4215,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.Runtime.Versioning.RequiresPreviewFeatures]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.RequiresPreviewFeatures&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4307,10 +4251,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.Runtime.Versioning.RequiresPreviewFeatures]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.RequiresPreviewFeatures&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4347,10 +4287,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.Runtime.Versioning.RequiresPreviewFeatures]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.RequiresPreviewFeatures&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4387,10 +4323,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4434,12 +4366,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4495,10 +4421,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4547,10 +4469,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4599,10 +4517,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4651,10 +4565,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4698,12 +4608,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4751,10 +4655,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4803,10 +4703,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4855,10 +4751,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4902,12 +4794,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4952,12 +4838,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5000,12 +4880,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5048,12 +4922,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5104,12 +4972,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5152,12 +5014,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5208,12 +5064,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5256,12 +5106,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5304,12 +5148,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5357,10 +5195,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5406,12 +5240,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5467,10 +5295,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5559,12 +5383,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5612,10 +5430,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5664,10 +5478,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5716,10 +5526,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5764,10 +5570,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.Runtime.Versioning.RequiresPreviewFeatures]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.RequiresPreviewFeatures&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5799,12 +5601,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5841,12 +5637,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
         <AssemblyName>System.Windows.Forms</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5885,10 +5675,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -5932,12 +5718,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -7470,10 +7250,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -7525,10 +7301,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -7580,10 +7352,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -7635,10 +7403,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -8048,12 +7812,6 @@ If you set the <xref:System.Windows.Forms.ToolStripItem.ImageKey%2A> property, t
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ToolStripItemClickedEventArgs.xml b/xml/System.Windows.Forms/ToolStripItemClickedEventArgs.xml
index 2476adaa6ce..b2cf0255db5 100644
--- a/xml/System.Windows.Forms/ToolStripItemClickedEventArgs.xml
+++ b/xml/System.Windows.Forms/ToolStripItemClickedEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.ToolStrip.ItemClicked" /> event.</summary>
diff --git a/xml/System.Windows.Forms/ToolStripItemCollection.xml b/xml/System.Windows.Forms/ToolStripItemCollection.xml
index 2179e905a8d..097ee66b805 100644
--- a/xml/System.Windows.Forms/ToolStripItemCollection.xml
+++ b/xml/System.Windows.Forms/ToolStripItemCollection.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Windows.Forms.ToolStripItem" /> objects.</summary>
@@ -250,10 +246,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripItem</ReturnType>
@@ -289,12 +281,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripItem</ReturnType>
       </ReturnValue>
@@ -504,12 +490,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -648,12 +628,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -816,10 +790,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripItem</ReturnType>
@@ -937,12 +907,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -985,12 +949,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1076,12 +1034,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1125,12 +1077,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1173,12 +1119,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1265,14 +1205,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1316,12 +1248,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ToolStripItemEventArgs.xml b/xml/System.Windows.Forms/ToolStripItemEventArgs.xml
index b19ab220a74..ef3f12ca1a9 100644
--- a/xml/System.Windows.Forms/ToolStripItemEventArgs.xml
+++ b/xml/System.Windows.Forms/ToolStripItemEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for <see cref="T:System.Windows.Forms.ToolStripItem" /> events.</summary>
diff --git a/xml/System.Windows.Forms/ToolStripItemImageRenderEventArgs.xml b/xml/System.Windows.Forms/ToolStripItemImageRenderEventArgs.xml
index edbac01a532..bcf0b8d28bd 100644
--- a/xml/System.Windows.Forms/ToolStripItemImageRenderEventArgs.xml
+++ b/xml/System.Windows.Forms/ToolStripItemImageRenderEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.ToolStripRenderer.RenderItemImage" /> event.</summary>
@@ -73,12 +69,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="g" Type="System.Drawing.Graphics" />
         <Parameter Name="item" Type="System.Windows.Forms.ToolStripItem" />
@@ -111,12 +101,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="g" Type="System.Drawing.Graphics" />
         <Parameter Name="item" Type="System.Windows.Forms.ToolStripItem" />
diff --git a/xml/System.Windows.Forms/ToolStripItemRenderEventArgs.xml b/xml/System.Windows.Forms/ToolStripItemRenderEventArgs.xml
index 3e7349fdeed..b28cc685fa2 100644
--- a/xml/System.Windows.Forms/ToolStripItemRenderEventArgs.xml
+++ b/xml/System.Windows.Forms/ToolStripItemRenderEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the events that render the background of objects derived from <see cref="T:System.Windows.Forms.ToolStripItem" /> in the <see cref="T:System.Windows.Forms.ToolStripRenderer" /> class.</summary>
@@ -236,10 +232,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStrip</ReturnType>
diff --git a/xml/System.Windows.Forms/ToolStripItemTextRenderEventArgs.xml b/xml/System.Windows.Forms/ToolStripItemTextRenderEventArgs.xml
index fd6ce43aa19..beca5ee6b91 100644
--- a/xml/System.Windows.Forms/ToolStripItemTextRenderEventArgs.xml
+++ b/xml/System.Windows.Forms/ToolStripItemTextRenderEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.ToolStripRenderer.RenderItemText" /> event.</summary>
@@ -74,12 +70,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="g" Type="System.Drawing.Graphics" />
         <Parameter Name="item" Type="System.Windows.Forms.ToolStripItem" />
@@ -134,12 +124,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="g" Type="System.Drawing.Graphics" />
         <Parameter Name="item" Type="System.Windows.Forms.ToolStripItem" />
diff --git a/xml/System.Windows.Forms/ToolStripLabel.xml b/xml/System.Windows.Forms/ToolStripLabel.xml
index bbbaaab11df..185e1ffd866 100644
--- a/xml/System.Windows.Forms/ToolStripLabel.xml
+++ b/xml/System.Windows.Forms/ToolStripLabel.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a nonselectable <see cref="T:System.Windows.Forms.ToolStripItem" /> that renders text and images and can display hyperlinks.</summary>
@@ -113,12 +109,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="image" Type="System.Drawing.Image" />
       </Parameters>
@@ -147,12 +137,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
       </Parameters>
@@ -181,12 +165,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
@@ -222,10 +200,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
@@ -265,10 +239,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
@@ -305,12 +275,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
diff --git a/xml/System.Windows.Forms/ToolStripManager.xml b/xml/System.Windows.Forms/ToolStripManager.xml
index 56d5d501bd3..eb00ee3aa34 100644
--- a/xml/System.Windows.Forms/ToolStripManager.xml
+++ b/xml/System.Windows.Forms/ToolStripManager.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Controls <see cref="T:System.Windows.Forms.ToolStrip" /> rendering and rafting, and the merging of <see cref="T:System.Windows.Forms.MenuStrip" />, <see cref="T:System.Windows.Forms.ToolStripDropDownMenu" />, and <see cref="T:System.Windows.Forms.ToolStripMenuItem" /> objects. This class cannot be inherited.</summary>
@@ -478,14 +474,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/ToolStripMenuItem.xml b/xml/System.Windows.Forms/ToolStripMenuItem.xml
index 1a76d9d6753..acbf4284659 100644
--- a/xml/System.Windows.Forms/ToolStripMenuItem.xml
+++ b/xml/System.Windows.Forms/ToolStripMenuItem.xml
@@ -36,14 +36,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a selectable option displayed on a <see cref="T:System.Windows.Forms.MenuStrip" /> or <see cref="T:System.Windows.Forms.ContextMenuStrip" />.</summary>
@@ -122,12 +114,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="image" Type="System.Drawing.Image" />
       </Parameters>
@@ -163,12 +149,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
       </Parameters>
@@ -212,12 +192,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
@@ -255,12 +229,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
@@ -308,12 +276,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
@@ -364,12 +326,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
@@ -414,12 +370,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
@@ -526,14 +476,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -689,14 +631,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -749,10 +683,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
@@ -797,12 +727,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripDropDown</ReturnType>
       </ReturnValue>
@@ -1050,12 +974,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1098,12 +1016,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1146,12 +1058,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1194,12 +1100,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1242,12 +1142,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1290,12 +1184,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1326,12 +1214,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1374,12 +1256,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1422,12 +1298,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1470,12 +1340,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1518,12 +1382,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1566,12 +1424,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1761,14 +1613,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/ToolStripOverflow.xml b/xml/System.Windows.Forms/ToolStripOverflow.xml
index 7d36cf2480e..3f55078f0fd 100644
--- a/xml/System.Windows.Forms/ToolStripOverflow.xml
+++ b/xml/System.Windows.Forms/ToolStripOverflow.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Manages the overflow behavior of a <see cref="T:System.Windows.Forms.ToolStrip" />.</summary>
diff --git a/xml/System.Windows.Forms/ToolStripOverflowButton.xml b/xml/System.Windows.Forms/ToolStripOverflowButton.xml
index ebc0235a1b5..4a8e3845bcd 100644
--- a/xml/System.Windows.Forms/ToolStripOverflowButton.xml
+++ b/xml/System.Windows.Forms/ToolStripOverflowButton.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Hosts a <see cref="T:System.Windows.Forms.ToolStripDropDown" /> that displays items that overflow the <see cref="T:System.Windows.Forms.ToolStrip" />.</summary>
diff --git a/xml/System.Windows.Forms/ToolStripPanel+ToolStripPanelRowCollection.xml b/xml/System.Windows.Forms/ToolStripPanel+ToolStripPanelRowCollection.xml
index 4f78a55a5c8..0c1981df416 100644
--- a/xml/System.Windows.Forms/ToolStripPanel+ToolStripPanelRowCollection.xml
+++ b/xml/System.Windows.Forms/ToolStripPanel+ToolStripPanelRowCollection.xml
@@ -504,12 +504,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -595,12 +589,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -644,12 +632,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -692,12 +674,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -822,14 +798,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -873,12 +841,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ToolStripPanel.xml b/xml/System.Windows.Forms/ToolStripPanel.xml
index 7633cc4fa7d..44362c776ec 100644
--- a/xml/System.Windows.Forms/ToolStripPanel.xml
+++ b/xml/System.Windows.Forms/ToolStripPanel.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Creates a container within which other controls can share horizontal or vertical space.</summary>
@@ -378,14 +374,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1260,12 +1248,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripPanelRow</ReturnType>
       </ReturnValue>
@@ -1340,14 +1322,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1551,14 +1525,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1656,14 +1622,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1760,14 +1718,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/ToolStripPanelRenderEventArgs.xml b/xml/System.Windows.Forms/ToolStripPanelRenderEventArgs.xml
index f8f3c4750a4..d35281da58b 100644
--- a/xml/System.Windows.Forms/ToolStripPanelRenderEventArgs.xml
+++ b/xml/System.Windows.Forms/ToolStripPanelRenderEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for <see cref="T:System.Windows.Forms.ToolStripPanel" /> drawing.</summary>
diff --git a/xml/System.Windows.Forms/ToolStripPanelRow.xml b/xml/System.Windows.Forms/ToolStripPanelRow.xml
index f0abb8f6126..ced834e78e1 100644
--- a/xml/System.Windows.Forms/ToolStripPanelRow.xml
+++ b/xml/System.Windows.Forms/ToolStripPanelRow.xml
@@ -35,10 +35,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a row of a <see cref="T:System.Windows.Forms.ToolStripPanel" /> that can contain controls.</summary>
diff --git a/xml/System.Windows.Forms/ToolStripProfessionalRenderer.xml b/xml/System.Windows.Forms/ToolStripProfessionalRenderer.xml
index d32d77e7fa5..91c6a36d412 100644
--- a/xml/System.Windows.Forms/ToolStripProfessionalRenderer.xml
+++ b/xml/System.Windows.Forms/ToolStripProfessionalRenderer.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Handles the painting functionality for <see cref="T:System.Windows.Forms.ToolStrip" /> objects, applying a custom palette and a streamlined style.</summary>
diff --git a/xml/System.Windows.Forms/ToolStripProgressBar.xml b/xml/System.Windows.Forms/ToolStripProgressBar.xml
index fc4f63a2a86..09be5995a49 100644
--- a/xml/System.Windows.Forms/ToolStripProgressBar.xml
+++ b/xml/System.Windows.Forms/ToolStripProgressBar.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a Windows progress bar control contained in a <see cref="T:System.Windows.Forms.StatusStrip" />.</summary>
@@ -691,12 +687,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -896,10 +886,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ProgressBar</ReturnType>
@@ -1108,14 +1094,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/ToolStripRenderEventArgs.xml b/xml/System.Windows.Forms/ToolStripRenderEventArgs.xml
index d662a48d448..38715de21a1 100644
--- a/xml/System.Windows.Forms/ToolStripRenderEventArgs.xml
+++ b/xml/System.Windows.Forms/ToolStripRenderEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="M:System.Windows.Forms.ToolStripRenderer.OnRenderImageMargin(System.Windows.Forms.ToolStripRenderEventArgs)" />, <see cref="M:System.Windows.Forms.ToolStripRenderer.OnRenderToolStripBorder(System.Windows.Forms.ToolStripRenderEventArgs)" />, and <see cref="M:System.Windows.Forms.ToolStripRenderer.OnRenderToolStripBackground(System.Windows.Forms.ToolStripRenderEventArgs)" /> methods.</summary>
diff --git a/xml/System.Windows.Forms/ToolStripRenderer.xml b/xml/System.Windows.Forms/ToolStripRenderer.xml
index 0eac7319ea7..f6a6959e430 100644
--- a/xml/System.Windows.Forms/ToolStripRenderer.xml
+++ b/xml/System.Windows.Forms/ToolStripRenderer.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Handles the painting functionality for <see cref="T:System.Windows.Forms.ToolStrip" /> objects.</summary>
diff --git a/xml/System.Windows.Forms/ToolStripSeparator.xml b/xml/System.Windows.Forms/ToolStripSeparator.xml
index 872320701b7..75c85f7ddaf 100644
--- a/xml/System.Windows.Forms/ToolStripSeparator.xml
+++ b/xml/System.Windows.Forms/ToolStripSeparator.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a line used to group items of a <see cref="T:System.Windows.Forms.ToolStrip" /> or the drop-down items of a <see cref="T:System.Windows.Forms.MenuStrip" /> or <see cref="T:System.Windows.Forms.ContextMenuStrip" /> or other <see cref="T:System.Windows.Forms.ToolStripDropDown" /> control.</summary>
@@ -270,10 +266,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
@@ -614,14 +606,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -854,14 +838,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -998,10 +974,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1040,12 +1012,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/ToolStripSeparatorRenderEventArgs.xml b/xml/System.Windows.Forms/ToolStripSeparatorRenderEventArgs.xml
index 22ca4ae33a7..2b32a727da6 100644
--- a/xml/System.Windows.Forms/ToolStripSeparatorRenderEventArgs.xml
+++ b/xml/System.Windows.Forms/ToolStripSeparatorRenderEventArgs.xml
@@ -59,10 +59,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="g" Type="System.Drawing.Graphics" />
diff --git a/xml/System.Windows.Forms/ToolStripSplitButton.xml b/xml/System.Windows.Forms/ToolStripSplitButton.xml
index 36723a165ca..58dd51c7a43 100644
--- a/xml/System.Windows.Forms/ToolStripSplitButton.xml
+++ b/xml/System.Windows.Forms/ToolStripSplitButton.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a combination of a standard button on the left and a drop-down button on the right, or the other way around if the value of <see cref="T:System.Windows.Forms.RightToLeft" /> is <see langword="Yes" />.</summary>
@@ -105,12 +101,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="image" Type="System.Drawing.Image" />
       </Parameters>
@@ -139,12 +129,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
       </Parameters>
@@ -173,12 +157,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
@@ -209,12 +187,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
@@ -247,12 +219,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
@@ -296,12 +262,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
@@ -416,14 +376,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -474,14 +426,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -698,14 +642,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ToolStripItem</ReturnType>
@@ -749,14 +685,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/ToolStripStatusLabel.xml b/xml/System.Windows.Forms/ToolStripStatusLabel.xml
index 90f08790164..213a0858b3d 100644
--- a/xml/System.Windows.Forms/ToolStripStatusLabel.xml
+++ b/xml/System.Windows.Forms/ToolStripStatusLabel.xml
@@ -37,10 +37,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a panel in a <see cref="T:System.Windows.Forms.StatusStrip" /> control.</summary>
@@ -115,12 +111,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="image" Type="System.Drawing.Image" />
       </Parameters>
@@ -149,12 +139,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
       </Parameters>
@@ -183,12 +167,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
@@ -219,12 +197,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
@@ -257,12 +229,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="image" Type="System.Drawing.Image" />
diff --git a/xml/System.Windows.Forms/ToolStripSystemRenderer.xml b/xml/System.Windows.Forms/ToolStripSystemRenderer.xml
index efc1a0b8351..eff23dd9f1e 100644
--- a/xml/System.Windows.Forms/ToolStripSystemRenderer.xml
+++ b/xml/System.Windows.Forms/ToolStripSystemRenderer.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Handles the painting functionality for <see cref="T:System.Windows.Forms.ToolStrip" /> objects, using system colors and a flat visual style.</summary>
diff --git a/xml/System.Windows.Forms/ToolStripTextBox.xml b/xml/System.Windows.Forms/ToolStripTextBox.xml
index 179d2c9291f..3341ed5cd3f 100644
--- a/xml/System.Windows.Forms/ToolStripTextBox.xml
+++ b/xml/System.Windows.Forms/ToolStripTextBox.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a text box in a <see cref="T:System.Windows.Forms.ToolStrip" /> that allows the user to enter text.</summary>
@@ -114,12 +110,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" />
       </Parameters>
@@ -285,14 +275,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -338,12 +320,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -592,14 +568,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Image</ReturnType>
@@ -741,14 +709,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1494,14 +1454,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1701,14 +1653,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1824,14 +1768,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -2119,12 +2055,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2157,12 +2087,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2280,14 +2204,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -2743,14 +2659,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/ToolTip.xml b/xml/System.Windows.Forms/ToolTip.xml
index 7f057915615..0d59f4cc61d 100644
--- a/xml/System.Windows.Forms/ToolTip.xml
+++ b/xml/System.Windows.Forms/ToolTip.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a small rectangular pop-up window that displays a brief description of a control's purpose when the user rests the pointer on the control.</summary>
@@ -536,14 +532,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.DrawToolTipEventHandler</ReturnType>
@@ -707,10 +695,6 @@
           <AttributeName Language="C#">[System.ComponentModel.Description("ToolTipToolTipDescr")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.Description("ToolTipToolTipDescr")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -991,14 +975,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.PopupEventHandler</ReturnType>
@@ -1785,14 +1761,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Windows.Forms/TrackBar.xml b/xml/System.Windows.Forms/TrackBar.xml
index 346cdaa5c50..0a57cb78fce 100644
--- a/xml/System.Windows.Forms/TrackBar.xml
+++ b/xml/System.Windows.Forms/TrackBar.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a standard Windows track bar.</summary>
@@ -508,12 +504,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -576,10 +566,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.CreateParams</ReturnType>
@@ -803,14 +789,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -1316,12 +1294,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1354,12 +1326,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1396,10 +1362,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1437,10 +1399,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1485,12 +1443,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1535,12 +1487,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1586,12 +1532,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2114,14 +2054,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2306,12 +2238,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/TrackBarRenderer.xml b/xml/System.Windows.Forms/TrackBarRenderer.xml
index 07966dacb07..f50cc11a55e 100644
--- a/xml/System.Windows.Forms/TrackBarRenderer.xml
+++ b/xml/System.Windows.Forms/TrackBarRenderer.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides methods used to render a track bar control with visual styles. This class cannot be inherited.</summary>
diff --git a/xml/System.Windows.Forms/TreeNode.xml b/xml/System.Windows.Forms/TreeNode.xml
index ecf0a65f07f..8a76265518d 100644
--- a/xml/System.Windows.Forms/TreeNode.xml
+++ b/xml/System.Windows.Forms/TreeNode.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a node of a <see cref="T:System.Windows.Forms.TreeView" />.</summary>
@@ -158,10 +154,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
@@ -295,12 +287,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="text" Type="System.String" />
         <Parameter Name="imageIndex" Type="System.Int32" />
@@ -829,14 +815,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ContextMenuStrip</ReturnType>
@@ -1112,10 +1090,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TreeNode</ReturnType>
@@ -1807,10 +1781,6 @@ If you set the <xref:System.Windows.Forms.TreeNode.ImageKey%2A> property, the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TreeNode</ReturnType>
@@ -1949,10 +1919,6 @@ If you set the <xref:System.Windows.Forms.TreeNode.ImageKey%2A> property, the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TreeNode</ReturnType>
@@ -2011,10 +1977,6 @@ If you set the <xref:System.Windows.Forms.TreeNode.ImageKey%2A> property, the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TreeNode</ReturnType>
@@ -2076,14 +2038,6 @@ If you set the <xref:System.Windows.Forms.TreeNode.ImageKey%2A> property, the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -2200,10 +2154,6 @@ If you set the <xref:System.Windows.Forms.TreeNode.ImageKey%2A> property, the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TreeNode</ReturnType>
@@ -2259,10 +2209,6 @@ If you set the <xref:System.Windows.Forms.TreeNode.ImageKey%2A> property, the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TreeNode</ReturnType>
@@ -2321,10 +2267,6 @@ If you set the <xref:System.Windows.Forms.TreeNode.ImageKey%2A> property, the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TreeNode</ReturnType>
@@ -2817,14 +2759,6 @@ If you set the <xref:System.Windows.Forms.TreeNode.SelectedImageKey> property, t
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -3082,10 +3016,6 @@ If you set the <xref:System.Windows.Forms.TreeNode.SelectedImageKey> property, t
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TreeView</ReturnType>
diff --git a/xml/System.Windows.Forms/TreeNodeCollection.xml b/xml/System.Windows.Forms/TreeNodeCollection.xml
index d96a64dce64..125ec8d7f29 100644
--- a/xml/System.Windows.Forms/TreeNodeCollection.xml
+++ b/xml/System.Windows.Forms/TreeNodeCollection.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Windows.Forms.TreeNode" /> objects.</summary>
@@ -111,12 +107,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TreeNode</ReturnType>
       </ReturnValue>
@@ -181,10 +171,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
@@ -486,12 +472,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -607,12 +587,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -714,12 +688,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -823,12 +791,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TreeNode[]</ReturnType>
       </ReturnValue>
@@ -877,12 +839,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IEnumerator</ReturnType>
       </ReturnValue>
@@ -923,12 +879,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1034,12 +984,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TreeNode</ReturnType>
       </ReturnValue>
@@ -1090,12 +1034,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1469,14 +1407,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TreeNode</ReturnType>
@@ -1570,12 +1500,6 @@ To assign <xref:System.Windows.Forms.TreeNode> objects to a specific location, o
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1773,10 +1697,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Windows.Forms/TreeNodeConverter.xml b/xml/System.Windows.Forms/TreeNodeConverter.xml
index 2090208c4f0..ed161fb1237 100644
--- a/xml/System.Windows.Forms/TreeNodeConverter.xml
+++ b/xml/System.Windows.Forms/TreeNodeConverter.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert <see cref="T:System.Windows.Forms.TreeNode" /> objects to and from various other representations.</summary>
diff --git a/xml/System.Windows.Forms/TreeNodeMouseClickEventArgs.xml b/xml/System.Windows.Forms/TreeNodeMouseClickEventArgs.xml
index bb300b76801..78df061a6d7 100644
--- a/xml/System.Windows.Forms/TreeNodeMouseClickEventArgs.xml
+++ b/xml/System.Windows.Forms/TreeNodeMouseClickEventArgs.xml
@@ -24,14 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.TreeView.NodeMouseClick" /> and <see cref="E:System.Windows.Forms.TreeView.NodeMouseDoubleClick" /> events.</summary>
diff --git a/xml/System.Windows.Forms/TreeNodeMouseHoverEventArgs.xml b/xml/System.Windows.Forms/TreeNodeMouseHoverEventArgs.xml
index 1ea447146a5..63c4e107627 100644
--- a/xml/System.Windows.Forms/TreeNodeMouseHoverEventArgs.xml
+++ b/xml/System.Windows.Forms/TreeNodeMouseHoverEventArgs.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.TreeView.NodeMouseHover" /> event.</summary>
diff --git a/xml/System.Windows.Forms/TreeView.xml b/xml/System.Windows.Forms/TreeView.xml
index 01cec218d69..d17232419c9 100644
--- a/xml/System.Windows.Forms/TreeView.xml
+++ b/xml/System.Windows.Forms/TreeView.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Displays a hierarchical collection of labeled items, each represented by a <see cref="T:System.Windows.Forms.TreeNode" />.</summary>
@@ -1078,12 +1074,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -1147,10 +1137,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.CreateParams</ReturnType>
@@ -1602,12 +1588,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.OwnerDrawPropertyBag</ReturnType>
       </ReturnValue>
@@ -1864,12 +1844,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TreeViewHitTestInfo</ReturnType>
       </ReturnValue>
@@ -1908,12 +1882,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TreeViewHitTestInfo</ReturnType>
       </ReturnValue>
@@ -2145,14 +2113,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2706,10 +2666,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.TreeNodeCollection</ReturnType>
@@ -2757,12 +2713,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2813,12 +2763,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2865,12 +2809,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2917,12 +2855,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2969,12 +2901,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3021,12 +2947,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3077,12 +2997,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3129,12 +3043,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3181,12 +3089,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3233,12 +3135,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3284,12 +3180,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3331,12 +3221,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3368,12 +3252,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3417,12 +3295,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3466,12 +3338,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3516,12 +3382,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3567,12 +3427,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3618,12 +3472,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3663,12 +3511,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3699,12 +3541,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3749,12 +3585,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3797,12 +3627,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3845,12 +3669,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3893,12 +3711,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3946,10 +3758,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4134,14 +3942,6 @@ If you set the <xref:System.Windows.Forms.TreeView.ImageKey%2A> property, the <x
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -4458,14 +4258,6 @@ If you set the <xref:System.Windows.Forms.TreeView.SelectedImageKey%2A> property
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -4946,14 +4738,6 @@ If you set the <xref:System.Windows.Forms.TreeView.SelectedImageKey%2A> property
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -5095,12 +4879,6 @@ If you set the <xref:System.Windows.Forms.TreeView.SelectedImageKey%2A> property
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/TreeViewCancelEventArgs.xml b/xml/System.Windows.Forms/TreeViewCancelEventArgs.xml
index b7bfa3cc80d..7a0df92ef9d 100644
--- a/xml/System.Windows.Forms/TreeViewCancelEventArgs.xml
+++ b/xml/System.Windows.Forms/TreeViewCancelEventArgs.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.TreeView.BeforeCheck" />, <see cref="E:System.Windows.Forms.TreeView.BeforeCollapse" />, <see cref="E:System.Windows.Forms.TreeView.BeforeExpand" />, and <see cref="E:System.Windows.Forms.TreeView.BeforeSelect" /> events of a <see cref="T:System.Windows.Forms.TreeView" /> control.</summary>
diff --git a/xml/System.Windows.Forms/TreeViewEventArgs.xml b/xml/System.Windows.Forms/TreeViewEventArgs.xml
index a8b1e1a92c0..47efef98ca7 100644
--- a/xml/System.Windows.Forms/TreeViewEventArgs.xml
+++ b/xml/System.Windows.Forms/TreeViewEventArgs.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.TreeView.AfterCheck" />, <see cref="E:System.Windows.Forms.TreeView.AfterCollapse" />, <see cref="E:System.Windows.Forms.TreeView.AfterExpand" />, or <see cref="E:System.Windows.Forms.TreeView.AfterSelect" /> events of a <see cref="T:System.Windows.Forms.TreeView" /> control.</summary>
diff --git a/xml/System.Windows.Forms/TreeViewHitTestInfo.xml b/xml/System.Windows.Forms/TreeViewHitTestInfo.xml
index 2aff7301f5e..751ebf12f11 100644
--- a/xml/System.Windows.Forms/TreeViewHitTestInfo.xml
+++ b/xml/System.Windows.Forms/TreeViewHitTestInfo.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains information about an area of a <see cref="T:System.Windows.Forms.TreeView" /> control or a <see cref="T:System.Windows.Forms.TreeNode" />.</summary>
diff --git a/xml/System.Windows.Forms/TreeViewImageIndexConverter.xml b/xml/System.Windows.Forms/TreeViewImageIndexConverter.xml
index 887c51c38a4..edf84bc3fb7 100644
--- a/xml/System.Windows.Forms/TreeViewImageIndexConverter.xml
+++ b/xml/System.Windows.Forms/TreeViewImageIndexConverter.xml
@@ -25,10 +25,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a type converter to convert data for an image index to and from one data type to another for use by the <see cref="T:System.Windows.Forms.TreeView" /> control.</summary>
@@ -194,12 +190,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ComponentModel.TypeConverter+StandardValuesCollection</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/TreeViewImageKeyConverter.xml b/xml/System.Windows.Forms/TreeViewImageKeyConverter.xml
index a76b043123c..006609b73e5 100644
--- a/xml/System.Windows.Forms/TreeViewImageKeyConverter.xml
+++ b/xml/System.Windows.Forms/TreeViewImageKeyConverter.xml
@@ -84,12 +84,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Forms/TypeValidationEventArgs.xml b/xml/System.Windows.Forms/TypeValidationEventArgs.xml
index 5722f8db681..95bd540eb6c 100644
--- a/xml/System.Windows.Forms/TypeValidationEventArgs.xml
+++ b/xml/System.Windows.Forms/TypeValidationEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.MaskedTextBox.TypeValidationCompleted" /> event.</summary>
diff --git a/xml/System.Windows.Forms/UpDownBase.xml b/xml/System.Windows.Forms/UpDownBase.xml
index ee01f63b02c..aec49368059 100644
--- a/xml/System.Windows.Forms/UpDownBase.xml
+++ b/xml/System.Windows.Forms/UpDownBase.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Implements the basic functionality required by a spin box (also known as an up-down control).</summary>
@@ -340,14 +336,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -439,14 +427,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Image</ReturnType>
@@ -497,14 +477,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -594,14 +566,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -775,14 +739,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.ContextMenuStrip</ReturnType>
@@ -1217,14 +1173,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1267,14 +1215,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1317,14 +1257,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.EventHandler</ReturnType>
@@ -1367,14 +1299,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.MouseEventHandler</ReturnType>
diff --git a/xml/System.Windows.Forms/UserControl.xml b/xml/System.Windows.Forms/UserControl.xml
index 426ba7a9a80..c30da3dc9fe 100644
--- a/xml/System.Windows.Forms/UserControl.xml
+++ b/xml/System.Windows.Forms/UserControl.xml
@@ -65,10 +65,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an empty control that can be used to create other controls.</summary>
@@ -439,10 +435,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.CreateParams</ReturnType>
@@ -608,10 +600,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -665,10 +653,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -701,12 +685,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -760,14 +738,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/VScrollBar.xml b/xml/System.Windows.Forms/VScrollBar.xml
index 80a97cc0dd7..7114a2f1577 100644
--- a/xml/System.Windows.Forms/VScrollBar.xml
+++ b/xml/System.Windows.Forms/VScrollBar.xml
@@ -33,10 +33,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a standard Windows vertical scroll bar.</summary>
@@ -139,10 +135,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.CreateParams</ReturnType>
diff --git a/xml/System.Windows.Forms/VScrollProperties.xml b/xml/System.Windows.Forms/VScrollProperties.xml
index ca5e34462ab..4d2e1dc013d 100644
--- a/xml/System.Windows.Forms/VScrollProperties.xml
+++ b/xml/System.Windows.Forms/VScrollProperties.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides basic properties for the <see cref="T:System.Windows.Forms.VScrollBar" /> class.</summary>
@@ -58,10 +54,6 @@
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="container" Type="System.Windows.Forms.ScrollableControl" />
diff --git a/xml/System.Windows.Forms/WebBrowser+WebBrowserSite.xml b/xml/System.Windows.Forms/WebBrowser+WebBrowserSite.xml
index 2757920a02d..4eb555abfa9 100644
--- a/xml/System.Windows.Forms/WebBrowser+WebBrowserSite.xml
+++ b/xml/System.Windows.Forms/WebBrowser+WebBrowserSite.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the host window of a <see cref="T:System.Windows.Forms.WebBrowser" /> control.</summary>
diff --git a/xml/System.Windows.Forms/WebBrowser.xml b/xml/System.Windows.Forms/WebBrowser.xml
index 3250dcc222b..c909d248d20 100644
--- a/xml/System.Windows.Forms/WebBrowser.xml
+++ b/xml/System.Windows.Forms/WebBrowser.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Enables a user to navigate Web pages inside a form.</summary>
@@ -271,12 +267,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -552,12 +542,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.AccessibleObject</ReturnType>
       </ReturnValue>
@@ -631,12 +615,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.WebBrowserSiteBase</ReturnType>
       </ReturnValue>
@@ -1030,14 +1008,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1106,10 +1076,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1233,10 +1199,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -1838,12 +1800,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1957,12 +1913,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2012,12 +1962,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2570,12 +2514,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2620,12 +2558,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2670,12 +2602,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2724,12 +2650,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2774,12 +2694,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2824,12 +2738,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2873,12 +2781,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2923,12 +2825,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2973,12 +2869,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3022,12 +2912,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3072,12 +2956,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3789,10 +3667,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -4032,10 +3906,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Version</ReturnType>
diff --git a/xml/System.Windows.Forms/WebBrowserBase.xml b/xml/System.Windows.Forms/WebBrowserBase.xml
index 2da8ac5c13d..8bc18d5bcb4 100644
--- a/xml/System.Windows.Forms/WebBrowserBase.xml
+++ b/xml/System.Windows.Forms/WebBrowserBase.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a wrapper for a generic ActiveX control for use as a base class by the <see cref="T:System.Windows.Forms.WebBrowser" /> control.</summary>
@@ -172,12 +168,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -621,12 +611,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.WebBrowserSiteBase</ReturnType>
       </ReturnValue>
@@ -673,14 +657,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Windows.Forms.Cursor</ReturnType>
@@ -1086,10 +1062,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1263,14 +1235,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Drawing.Font</ReturnType>
@@ -2197,12 +2161,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2234,12 +2192,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2271,12 +2223,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2308,12 +2254,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2350,10 +2290,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -2401,12 +2337,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2438,12 +2368,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2476,12 +2400,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2513,12 +2431,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2947,14 +2859,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Windows.Forms/WebBrowserDocumentCompletedEventArgs.xml b/xml/System.Windows.Forms/WebBrowserDocumentCompletedEventArgs.xml
index 4b83a6dc941..d3f3698b853 100644
--- a/xml/System.Windows.Forms/WebBrowserDocumentCompletedEventArgs.xml
+++ b/xml/System.Windows.Forms/WebBrowserDocumentCompletedEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.WebBrowser.DocumentCompleted" /> event.</summary>
diff --git a/xml/System.Windows.Forms/WebBrowserNavigatedEventArgs.xml b/xml/System.Windows.Forms/WebBrowserNavigatedEventArgs.xml
index 9615a872d2c..3b16c765215 100644
--- a/xml/System.Windows.Forms/WebBrowserNavigatedEventArgs.xml
+++ b/xml/System.Windows.Forms/WebBrowserNavigatedEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.WebBrowser.Navigated" /> event.</summary>
diff --git a/xml/System.Windows.Forms/WebBrowserNavigatingEventArgs.xml b/xml/System.Windows.Forms/WebBrowserNavigatingEventArgs.xml
index 67272e7d9f4..12cbea2cfc3 100644
--- a/xml/System.Windows.Forms/WebBrowserNavigatingEventArgs.xml
+++ b/xml/System.Windows.Forms/WebBrowserNavigatingEventArgs.xml
@@ -24,10 +24,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Windows.Forms.WebBrowser.Navigating" /> event.</summary>
diff --git a/xml/System.Windows.Forms/WindowsFormsSynchronizationContext.xml b/xml/System.Windows.Forms/WindowsFormsSynchronizationContext.xml
index b8d42c5a38a..e3719b52c59 100644
--- a/xml/System.Windows.Forms/WindowsFormsSynchronizationContext.xml
+++ b/xml/System.Windows.Forms/WindowsFormsSynchronizationContext.xml
@@ -28,10 +28,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a synchronization context for the Windows Forms application model.</summary>
@@ -126,12 +122,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.SynchronizationContext</ReturnType>
       </ReturnValue>
@@ -203,12 +193,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -258,12 +242,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Windows.Input/ICommand.xml b/xml/System.Windows.Input/ICommand.xml
index 60b4b6ed066..59ed1c5fb2b 100644
--- a/xml/System.Windows.Input/ICommand.xml
+++ b/xml/System.Windows.Input/ICommand.xml
@@ -65,10 +65,6 @@
       <AttributeName Language="C#">[System.Windows.Markup.ValueSerializer("System.Windows.Input.CommandValueSerializer, PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, Custom=null")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Windows.Markup.ValueSerializer("System.Windows.Input.CommandValueSerializer, PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, Custom=null")&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.0;netframework-3.5">
       <AttributeName Language="C#">[System.ComponentModel.TypeConverter("System.Windows.Input.CommandConverter, PresentationFramework, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, Custom=null")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.TypeConverter("System.Windows.Input.CommandConverter, PresentationFramework, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, Custom=null")&gt;]</AttributeName>
diff --git a/xml/System.Windows.Markup/ValueSerializerAttribute.xml b/xml/System.Windows.Markup/ValueSerializerAttribute.xml
index 7c7133544bd..f0912d05ceb 100644
--- a/xml/System.Windows.Markup/ValueSerializerAttribute.xml
+++ b/xml/System.Windows.Markup/ValueSerializerAttribute.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.CompilerServices.TypeForwardedFrom("WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.TypeForwardedFrom("WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35")&gt;]</AttributeName>
diff --git a/xml/System.Xaml.Permissions/XamlAccessLevel.xml b/xml/System.Xaml.Permissions/XamlAccessLevel.xml
index 747af5244c2..6eb05a15320 100644
--- a/xml/System.Xaml.Permissions/XamlAccessLevel.xml
+++ b/xml/System.Xaml.Permissions/XamlAccessLevel.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -324,10 +320,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0;windowsdesktop-8.0;windowsdesktop-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Linq/Extensions.xml b/xml/System.Xml.Linq/Extensions.xml
index 05a1807919d..539cbf3446f 100644
--- a/xml/System.Xml.Linq/Extensions.xml
+++ b/xml/System.Xml.Linq/Extensions.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains the LINQ to XML extension methods.</summary>
@@ -3418,12 +3414,6 @@ Console.WriteLine(root)
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Linq/XAttribute.xml b/xml/System.Xml.Linq/XAttribute.xml
index 82add18fd5c..5512735cb55 100644
--- a/xml/System.Xml.Linq/XAttribute.xml
+++ b/xml/System.Xml.Linq/XAttribute.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5">
       <AttributeName Language="C#">[System.ComponentModel.TypeDescriptionProvider(typeof(System.Xml.Linq.ComponentModel.XTypeDescriptionProvider&lt;System.Xml.Linq.XAttribute&gt;))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.TypeDescriptionProvider(typeof(System.Xml.Linq.ComponentModel.XTypeDescriptionProvider&lt;System.Xml.Linq.XAttribute&gt;))&gt;]</AttributeName>
@@ -624,10 +620,6 @@ Att2=new content
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Linq.XAttribute</ReturnType>
@@ -1505,10 +1497,6 @@ value=9223372036854775807
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Boolean&gt;</ReturnType>
@@ -1600,10 +1588,6 @@ Nullable boolean: BoolValue2=False
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.DateTime&gt;</ReturnType>
@@ -1693,10 +1677,6 @@ Nullable DateTime: value=10/6/2006 12:30:00 PM
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.DateTimeOffset&gt;</ReturnType>
@@ -1782,10 +1762,6 @@ Nullable DateTimeOffset: value=10/6/2006 12:30:00 PM -07:00
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Decimal&gt;</ReturnType>
@@ -1866,10 +1842,6 @@ Nullable decimal: value=79228162514264337593543950335
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Double&gt;</ReturnType>
@@ -1950,10 +1922,6 @@ Nullable double: value=1.79769313486231E+308
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Guid&gt;</ReturnType>
@@ -2034,10 +2002,6 @@ Nullable Guid: value=3c1cc55b-baff-4b7a-9d17-077af3aa5730
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Int32&gt;</ReturnType>
@@ -2117,10 +2081,6 @@ Nullable int: value=2147483647
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Int64&gt;</ReturnType>
@@ -2201,10 +2161,6 @@ Nullable long: value=9223372036854775807
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Single&gt;</ReturnType>
@@ -2285,10 +2241,6 @@ Nullable Single: value=3.402823E+38
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.TimeSpan&gt;</ReturnType>
@@ -2376,10 +2328,6 @@ Nullable TimeSpan: value=01:05:30
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.UInt32&gt;</ReturnType>
@@ -2460,10 +2408,6 @@ Nullable uint: value=4294967295
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.UInt64&gt;</ReturnType>
@@ -2624,10 +2568,6 @@ value=3.402823E+38
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2956,10 +2896,6 @@ value=1844674407370955161
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Linq.XAttribute</ReturnType>
diff --git a/xml/System.Xml.Linq/XCData.xml b/xml/System.Xml.Linq/XCData.xml
index b76881fdbc9..c29de681491 100644
--- a/xml/System.Xml.Linq/XCData.xml
+++ b/xml/System.Xml.Linq/XCData.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a text node that contains CDATA.</summary>
diff --git a/xml/System.Xml.Linq/XComment.xml b/xml/System.Xml.Linq/XComment.xml
index 115d9d641a7..d4b033dab7b 100644
--- a/xml/System.Xml.Linq/XComment.xml
+++ b/xml/System.Xml.Linq/XComment.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an XML comment.</summary>
diff --git a/xml/System.Xml.Linq/XContainer.xml b/xml/System.Xml.Linq/XContainer.xml
index 57a1e0c0344..a87240d22ec 100644
--- a/xml/System.Xml.Linq/XContainer.xml
+++ b/xml/System.Xml.Linq/XContainer.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a node that can contain other nodes.</summary>
@@ -181,12 +177,6 @@ Console.WriteLine(xmlTree)
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -562,12 +552,6 @@ Console.WriteLine(xmlTree)
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1938,10 +1922,6 @@ End Module
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Linq.XNode</ReturnType>
@@ -2032,10 +2012,6 @@ Console.WriteLine(firstNode)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Linq.XNode</ReturnType>
@@ -2482,12 +2458,6 @@ Console.WriteLine(root)
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Linq/XDeclaration.xml b/xml/System.Xml.Linq/XDeclaration.xml
index ab73b332746..6fa5dcb263b 100644
--- a/xml/System.Xml.Linq/XDeclaration.xml
+++ b/xml/System.Xml.Linq/XDeclaration.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an XML declaration.</summary>
@@ -114,12 +110,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="other" Type="System.Xml.Linq.XDeclaration" />
       </Parameters>
@@ -509,12 +499,6 @@ yes
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Linq/XDocument.xml b/xml/System.Xml.Linq/XDocument.xml
index 11983bb78fc..6249f38c337 100644
--- a/xml/System.Xml.Linq/XDocument.xml
+++ b/xml/System.Xml.Linq/XDocument.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an XML document. For the components and usage of an <see cref="T:System.Xml.Linq.XDocument" /> object, see <see href="https://learn.microsoft.com/dotnet/standard/linq/xdocument-class-overview">XDocument Class Overview</see>.</summary>
@@ -532,10 +528,6 @@ Console.WriteLine(doc)
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -685,14 +677,6 @@ Console.WriteLine(File.ReadAllText("Test.xml"))
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -789,10 +773,6 @@ Console.WriteLine(doc.Declaration)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -2345,10 +2325,6 @@ nodes when not preserving whitespace: 4
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Linq/XDocumentType.xml b/xml/System.Xml.Linq/XDocumentType.xml
index b402b32c8a0..b2258d7b13f 100644
--- a/xml/System.Xml.Linq/XDocumentType.xml
+++ b/xml/System.Xml.Linq/XDocumentType.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an XML Document Type Definition (DTD).</summary>
@@ -130,12 +126,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="other" Type="System.Xml.Linq.XDocumentType" />
       </Parameters>
@@ -457,14 +447,6 @@ Console.WriteLine(doc.DocumentType.InternalSubset)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -908,12 +890,6 @@ SystemId:Pubs.dtd
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -960,12 +936,6 @@ SystemId:Pubs.dtd
       <AssemblyInfo>
         <AssemblyName>System.Xml.Linq</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Linq/XElement.xml b/xml/System.Xml.Linq/XElement.xml
index 7b752b5cbc2..f47ca4cf3cb 100644
--- a/xml/System.Xml.Linq/XElement.xml
+++ b/xml/System.Xml.Linq/XElement.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5">
       <AttributeName Language="C#">[System.ComponentModel.TypeDescriptionProvider(typeof(System.Xml.Linq.ComponentModel.XTypeDescriptionProvider&lt;System.Xml.Linq.XElement&gt;))]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.TypeDescriptionProvider(typeof(System.Xml.Linq.ComponentModel.XTypeDescriptionProvider&lt;System.Xml.Linq.XElement&gt;))&gt;]</AttributeName>
@@ -2281,10 +2277,6 @@ Child
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Linq.XAttribute</ReturnType>
@@ -2878,10 +2870,6 @@ True
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -5017,10 +5005,6 @@ value=9223372036854775807
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Boolean&gt;</ReturnType>
@@ -5115,10 +5099,6 @@ Nullable Boolean: value2=False
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.DateTime&gt;</ReturnType>
@@ -5210,10 +5190,6 @@ Nullable DateTime: value=10/6/2006 12:30:00 PM
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.DateTimeOffset&gt;</ReturnType>
@@ -5308,10 +5284,6 @@ dt=10/6/2006 12:30:00 PM -07:00
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Decimal&gt;</ReturnType>
@@ -5396,10 +5368,6 @@ Nullable decimal: value=79228162514264337593543950335
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Double&gt;</ReturnType>
@@ -5485,10 +5453,6 @@ Nullable double: value=1.79769313486231E+308
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Guid&gt;</ReturnType>
@@ -5573,10 +5537,6 @@ Nullable Guid: value=3c1cc55b-baff-4b7a-9d17-077af3aa5730
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Int32&gt;</ReturnType>
@@ -5662,10 +5622,6 @@ Nullable integer: value=2147483647
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Int64&gt;</ReturnType>
@@ -5750,10 +5706,6 @@ Nullable ulong: value=9223372036854775807
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.Single&gt;</ReturnType>
@@ -5838,10 +5790,6 @@ Nullable Single: value=3.402823E+38
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.TimeSpan&gt;</ReturnType>
@@ -5931,10 +5879,6 @@ Nullable TimeSpan: value=01:05:30
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.UInt32&gt;</ReturnType>
@@ -6019,10 +5963,6 @@ Nullable uint: value=4294967295
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Nullable&lt;System.UInt64&gt;</ReturnType>
@@ -6189,10 +6129,6 @@ value=3.402823E+38
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -7062,12 +6998,6 @@ Console.WriteLine(xmlTree)
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -7453,12 +7383,6 @@ Console.WriteLine(root)
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Linq/XName.xml b/xml/System.Xml.Linq/XName.xml
index 799fa1e5ddd..cb773e39caa 100644
--- a/xml/System.Xml.Linq/XName.xml
+++ b/xml/System.Xml.Linq/XName.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -111,12 +107,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -710,12 +700,6 @@ http://www.adventure-works.com
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -813,10 +797,6 @@ True
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Linq.XName</ReturnType>
@@ -909,12 +889,6 @@ End Module
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Linq/XNamespace.xml b/xml/System.Xml.Linq/XNamespace.xml
index b4d161a6680..6864eabfc40 100644
--- a/xml/System.Xml.Linq/XNamespace.xml
+++ b/xml/System.Xml.Linq/XNamespace.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an XML namespace. This class cannot be inherited.</summary>
@@ -90,12 +86,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -704,12 +694,6 @@ End Module
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -796,10 +780,6 @@ True
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Linq.XNamespace</ReturnType>
@@ -875,12 +855,6 @@ http://www.adventure-works.com
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Linq/XNode.xml b/xml/System.Xml.Linq/XNode.xml
index a0c338346e8..d20078155d9 100644
--- a/xml/System.Xml.Linq/XNode.xml
+++ b/xml/System.Xml.Linq/XNode.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the abstract concept of a node (element, comment, document type, processing instruction, or text node) in the XML tree.</summary>
@@ -211,12 +207,6 @@ Console.WriteLine(xmlTree)
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -552,12 +542,6 @@ Console.WriteLine(xmlTree)
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1023,12 +1007,6 @@ Child
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1383,12 +1361,6 @@ Console.WriteLine(newTree)
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2152,12 +2124,6 @@ Child 3 Information
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2259,12 +2225,6 @@ Child5 is after Child3
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2371,10 +2331,6 @@ Child5 is not before Child3
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Linq.XNode</ReturnType>
@@ -2730,10 +2686,6 @@ Node type: Element
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Linq.XNode</ReturnType>
@@ -3148,12 +3100,6 @@ Console.WriteLine(xmlTree)
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Linq/XNodeDocumentOrderComparer.xml b/xml/System.Xml.Linq/XNodeDocumentOrderComparer.xml
index ed310ca560e..390364db987 100644
--- a/xml/System.Xml.Linq/XNodeDocumentOrderComparer.xml
+++ b/xml/System.Xml.Linq/XNodeDocumentOrderComparer.xml
@@ -184,12 +184,6 @@ Child3 is before Child5
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Linq/XNodeEqualityComparer.xml b/xml/System.Xml.Linq/XNodeEqualityComparer.xml
index 9c89a3cafcc..46626872ac7 100644
--- a/xml/System.Xml.Linq/XNodeEqualityComparer.xml
+++ b/xml/System.Xml.Linq/XNodeEqualityComparer.xml
@@ -175,12 +175,6 @@ False
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -286,12 +280,6 @@ False
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Linq/XObject.xml b/xml/System.Xml.Linq/XObject.xml
index a4da4b6d3e2..0d05d1c7b3b 100644
--- a/xml/System.Xml.Linq/XObject.xml
+++ b/xml/System.Xml.Linq/XObject.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a node or an attribute in an XML tree.</summary>
@@ -1237,10 +1233,6 @@ Changed event raised
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Linq.XDocument</ReturnType>
@@ -1442,10 +1434,6 @@ Text
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Linq.XElement</ReturnType>
diff --git a/xml/System.Xml.Linq/XObjectChangeEventArgs.xml b/xml/System.Xml.Linq/XObjectChangeEventArgs.xml
index f922c898a3d..e45149ec80c 100644
--- a/xml/System.Xml.Linq/XObjectChangeEventArgs.xml
+++ b/xml/System.Xml.Linq/XObjectChangeEventArgs.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Xml.Linq.XObject.Changing" /> and <see cref="E:System.Xml.Linq.XObject.Changed" /> events.</summary>
diff --git a/xml/System.Xml.Linq/XProcessingInstruction.xml b/xml/System.Xml.Linq/XProcessingInstruction.xml
index ddc2eb98e01..2bc068a5f23 100644
--- a/xml/System.Xml.Linq/XProcessingInstruction.xml
+++ b/xml/System.Xml.Linq/XProcessingInstruction.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an XML processing instruction.</summary>
diff --git a/xml/System.Xml.Linq/XStreamingElement.xml b/xml/System.Xml.Linq/XStreamingElement.xml
index 9d6d8f0e583..66acc54c849 100644
--- a/xml/System.Xml.Linq/XStreamingElement.xml
+++ b/xml/System.Xml.Linq/XStreamingElement.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents elements in an XML tree that supports deferred streaming output.</summary>
@@ -832,12 +828,6 @@ Console.WriteLine(dstTree)
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Linq/XText.xml b/xml/System.Xml.Linq/XText.xml
index 26764aa4435..7fb00412bd8 100644
--- a/xml/System.Xml.Linq/XText.xml
+++ b/xml/System.Xml.Linq/XText.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a text node.</summary>
diff --git a/xml/System.Xml.Resolvers/XmlPreloadedResolver.xml b/xml/System.Xml.Resolvers/XmlPreloadedResolver.xml
index 43a2af63102..de9d98ed694 100644
--- a/xml/System.Xml.Resolvers/XmlPreloadedResolver.xml
+++ b/xml/System.Xml.Resolvers/XmlPreloadedResolver.xml
@@ -42,10 +42,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a class that is used to prepopulate the cache with DTDs or XML streams.</summary>
@@ -184,10 +180,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -233,10 +225,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -283,12 +271,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="fallbackResolver" Type="System.Xml.XmlResolver" />
         <Parameter Name="preloadedDtds" Type="System.Xml.Resolvers.XmlKnownDtds" />
@@ -584,12 +566,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -807,12 +783,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Uri</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Schema/Extensions.xml b/xml/System.Xml.Schema/Extensions.xml
index ecbef7cb0cc..7e25d08bc09 100644
--- a/xml/System.Xml.Schema/Extensions.xml
+++ b/xml/System.Xml.Schema/Extensions.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This class contains the LINQ to XML extension methods for XSD validation.</summary>
diff --git a/xml/System.Xml.Schema/IXmlSchemaInfo.xml b/xml/System.Xml.Schema/IXmlSchemaInfo.xml
index 3a3a33981aa..42098ed7750 100644
--- a/xml/System.Xml.Schema/IXmlSchemaInfo.xml
+++ b/xml/System.Xml.Schema/IXmlSchemaInfo.xml
@@ -36,12 +36,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Xml.ReaderWriter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Defines the post-schema-validation infoset of a validated XML node.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Xml.Schema/ValidationEventArgs.xml b/xml/System.Xml.Schema/ValidationEventArgs.xml
index ac6cba72cc2..a22baa93de5 100644
--- a/xml/System.Xml.Schema/ValidationEventArgs.xml
+++ b/xml/System.Xml.Schema/ValidationEventArgs.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Returns detailed information related to the <see langword="ValidationEventHandler" />.</summary>
diff --git a/xml/System.Xml.Schema/XmlAtomicValue.xml b/xml/System.Xml.Schema/XmlAtomicValue.xml
index be787f6854f..33b8f1e25c6 100644
--- a/xml/System.Xml.Schema/XmlAtomicValue.xml
+++ b/xml/System.Xml.Schema/XmlAtomicValue.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the typed value of a validated XML element or attribute. The <see cref="T:System.Xml.Schema.XmlAtomicValue" /> class cannot be inherited.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchema.xml b/xml/System.Xml.Schema/XmlSchema.xml
index fab4b629a55..ed623daf616 100644
--- a/xml/System.Xml.Schema/XmlSchema.xml
+++ b/xml/System.Xml.Schema/XmlSchema.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>An in-memory representation of an XML Schema, as specified in the World Wide Web Consortium (W3C) <see href="https://www.w3.org/TR/xmlschema-1/">XML Schema Part 1: Structures</see> and <see href="https://www.w3.org/TR/xmlschema-2/">XML Schema Part 2: Datatypes</see>].</summary>
@@ -438,10 +434,6 @@
           <AttributeName Language="C#">[System.Obsolete("XmlSchema.Compile has been deprecated. Use System.Xml.Schema.XmlSchemaSet for schema compilation and validation.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("XmlSchema.Compile has been deprecated. Use System.Xml.Schema.XmlSchemaSet for schema compilation and validation.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
           <AttributeName Language="C#">[System.Obsolete("Use System.Xml.Schema.XmlSchemaSet for schema compilation and validation. http://go.microsoft.com/fwlink/?linkid=14202")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Use System.Xml.Schema.XmlSchemaSet for schema compilation and validation. http://go.microsoft.com/fwlink/?linkid=14202")&gt;]</AttributeName>
@@ -509,10 +501,6 @@
           <AttributeName Language="C#">[System.Obsolete("XmlSchema.Compile has been deprecated. Use System.Xml.Schema.XmlSchemaSet for schema compilation and validation.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("XmlSchema.Compile has been deprecated. Use System.Xml.Schema.XmlSchemaSet for schema compilation and validation.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
           <AttributeName Language="C#">[System.Obsolete("Use System.Xml.Schema.XmlSchemaSet for schema compilation and validation. http://go.microsoft.com/fwlink/?linkid=14202")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Use System.Xml.Schema.XmlSchemaSet for schema compilation and validation. http://go.microsoft.com/fwlink/?linkid=14202")&gt;]</AttributeName>
@@ -832,14 +820,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1247,12 +1227,6 @@ schema.Includes.Add(include);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchema</ReturnType>
       </ReturnValue>
@@ -1308,12 +1282,6 @@ schema.Includes.Add(include);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchema</ReturnType>
       </ReturnValue>
@@ -1369,12 +1337,6 @@ schema.Includes.Add(include);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchema</ReturnType>
       </ReturnValue>
@@ -1485,14 +1447,6 @@ schema.Includes.Add(include);
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1618,14 +1572,6 @@ schema.Includes.Add(include);
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Schema/XmlSchemaAll.xml b/xml/System.Xml.Schema/XmlSchemaAll.xml
index df752732003..b12e140eb0f 100644
--- a/xml/System.Xml.Schema/XmlSchemaAll.xml
+++ b/xml/System.Xml.Schema/XmlSchemaAll.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the World Wide Web Consortium (W3C) <see langword="all" /> element (compositor).</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaAnnotated.xml b/xml/System.Xml.Schema/XmlSchemaAnnotated.xml
index 72830a15f9f..2b10dbd6253 100644
--- a/xml/System.Xml.Schema/XmlSchemaAnnotated.xml
+++ b/xml/System.Xml.Schema/XmlSchemaAnnotated.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The base class for any element that can contain annotation elements.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaAnnotation.xml b/xml/System.Xml.Schema/XmlSchemaAnnotation.xml
index 768c0454dd5..d769d702436 100644
--- a/xml/System.Xml.Schema/XmlSchemaAnnotation.xml
+++ b/xml/System.Xml.Schema/XmlSchemaAnnotation.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the World Wide Web Consortium (W3C) <see langword="annotation" /> element.</summary>
@@ -211,10 +207,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Schema/XmlSchemaAny.xml b/xml/System.Xml.Schema/XmlSchemaAny.xml
index 2da8dd1cbc0..85770da9a88 100644
--- a/xml/System.Xml.Schema/XmlSchemaAny.xml
+++ b/xml/System.Xml.Schema/XmlSchemaAny.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the World Wide Web Consortium (W3C) <see langword="any" /> element.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaAnyAttribute.xml b/xml/System.Xml.Schema/XmlSchemaAnyAttribute.xml
index 16488e31519..765898fe813 100644
--- a/xml/System.Xml.Schema/XmlSchemaAnyAttribute.xml
+++ b/xml/System.Xml.Schema/XmlSchemaAnyAttribute.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the World Wide Web Consortium (W3C) <see langword="anyAttribute" /> element.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaAppInfo.xml b/xml/System.Xml.Schema/XmlSchemaAppInfo.xml
index dc5f36ef1b3..303ccffcc4c 100644
--- a/xml/System.Xml.Schema/XmlSchemaAppInfo.xml
+++ b/xml/System.Xml.Schema/XmlSchemaAppInfo.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the World Wide Web Consortium (W3C) <see langword="appinfo" /> element.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaAttribute.xml b/xml/System.Xml.Schema/XmlSchemaAttribute.xml
index 52fe41a8e71..927ddc1a6f9 100644
--- a/xml/System.Xml.Schema/XmlSchemaAttribute.xml
+++ b/xml/System.Xml.Schema/XmlSchemaAttribute.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="attribute" /> element from the XML Schema as specified by the World Wide Web Consortium (W3C). Attributes provide additional information for other document elements. The attribute tag is nested between the tags of a document's element for the schema. The XML document displays attributes as named items in the opening tag of an element.</summary>
@@ -536,10 +532,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -601,14 +593,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -734,14 +718,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Schema/XmlSchemaAttributeGroup.xml b/xml/System.Xml.Schema/XmlSchemaAttributeGroup.xml
index e6e5aef3654..44ca2ad27d6 100644
--- a/xml/System.Xml.Schema/XmlSchemaAttributeGroup.xml
+++ b/xml/System.Xml.Schema/XmlSchemaAttributeGroup.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="attributeGroup" /> element from the XML Schema as specified by the World Wide Web Consortium (W3C). AttributesGroups provides a mechanism to group a set of attribute declarations so that they can be incorporated as a group into complex type definitions.</summary>
@@ -209,10 +205,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -328,10 +320,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Schema/XmlSchemaAttributeGroupRef.xml b/xml/System.Xml.Schema/XmlSchemaAttributeGroupRef.xml
index f67f7b453b8..81942c76bdd 100644
--- a/xml/System.Xml.Schema/XmlSchemaAttributeGroupRef.xml
+++ b/xml/System.Xml.Schema/XmlSchemaAttributeGroupRef.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="attributeGroup" /> element with the <see langword="ref" /> attribute from the XML Schema as specified by the <see href="https://go.microsoft.com/fwlink/?LinkId=49454">World Wide Web Consortium (W3C)</see>. AttributesGroupRef is the reference for an attributeGroup, name property contains the attribute group being referenced.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaChoice.xml b/xml/System.Xml.Schema/XmlSchemaChoice.xml
index 2c3cd52d0b0..72c8e9152cb 100644
--- a/xml/System.Xml.Schema/XmlSchemaChoice.xml
+++ b/xml/System.Xml.Schema/XmlSchemaChoice.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="choice" /> element (compositor) from the XML Schema as specified by the World Wide Web Consortium (W3C). The <see langword="choice" /> allows only one of its children to appear in an instance.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaCollection.xml b/xml/System.Xml.Schema/XmlSchemaCollection.xml
index b87ce2933b4..01ba0c738fb 100644
--- a/xml/System.Xml.Schema/XmlSchemaCollection.xml
+++ b/xml/System.Xml.Schema/XmlSchemaCollection.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
       <AttributeName Language="C#">[System.Obsolete("Use System.Xml.Schema.XmlSchemaSet for schema compilation and validation. http://go.microsoft.com/fwlink/?linkid=14202")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("Use System.Xml.Schema.XmlSchemaSet for schema compilation and validation. http://go.microsoft.com/fwlink/?linkid=14202")&gt;]</AttributeName>
@@ -384,12 +380,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchema</ReturnType>
       </ReturnValue>
@@ -504,12 +494,6 @@ schemaColl.Add("urn:author", "names.xsd");
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchema</ReturnType>
       </ReturnValue>
@@ -587,12 +571,6 @@ schemaColl.Add("urn:author", "names.xsd");
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchema</ReturnType>
       </ReturnValue>
@@ -672,12 +650,6 @@ schemaColl.Add("urn:author", "names.xsd");
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchema</ReturnType>
       </ReturnValue>
@@ -773,12 +745,6 @@ schemaColl.Add("urn:author", "names.xsd");
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1068,10 +1034,6 @@ schemaColl.Add("urn:author", "names.xsd");
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchema</ReturnType>
diff --git a/xml/System.Xml.Schema/XmlSchemaCollectionEnumerator.xml b/xml/System.Xml.Schema/XmlSchemaCollectionEnumerator.xml
index b54c82c2989..3f98cd435a2 100644
--- a/xml/System.Xml.Schema/XmlSchemaCollectionEnumerator.xml
+++ b/xml/System.Xml.Schema/XmlSchemaCollectionEnumerator.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Supports a simple iteration over a collection. This class cannot be inherited.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaComplexContent.xml b/xml/System.Xml.Schema/XmlSchemaComplexContent.xml
index 6dbc6f35f5a..196f99e3d4c 100644
--- a/xml/System.Xml.Schema/XmlSchemaComplexContent.xml
+++ b/xml/System.Xml.Schema/XmlSchemaComplexContent.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="complexContent" /> element from XML Schema as specified by the World Wide Web Consortium (W3C). This class represents the complex content model for complex types. It contains extensions or restrictions on a complex type that has either only elements or mixed content.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaComplexContentExtension.xml b/xml/System.Xml.Schema/XmlSchemaComplexContentExtension.xml
index 53e2225c3df..8b74378e828 100644
--- a/xml/System.Xml.Schema/XmlSchemaComplexContentExtension.xml
+++ b/xml/System.Xml.Schema/XmlSchemaComplexContentExtension.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="extension" /> element from XML Schema as specified by the World Wide Web Consortium (W3C). This class is for complex types with complex content model derived by extension. It extends the complex type by adding attributes or elements.</summary>
@@ -196,10 +192,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -254,14 +246,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Schema/XmlSchemaComplexContentRestriction.xml b/xml/System.Xml.Schema/XmlSchemaComplexContentRestriction.xml
index 19749a07b98..4cc545d450f 100644
--- a/xml/System.Xml.Schema/XmlSchemaComplexContentRestriction.xml
+++ b/xml/System.Xml.Schema/XmlSchemaComplexContentRestriction.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="restriction" /> element from XML Schema as specified by the World Wide Web Consortium (W3C). This class is for complex types with a complex content model derived by restriction. It restricts the contents of the complex type to a subset of the inherited complex type.</summary>
@@ -204,10 +200,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -262,14 +254,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Schema/XmlSchemaComplexType.xml b/xml/System.Xml.Schema/XmlSchemaComplexType.xml
index 922fa4860d1..5eed4e3ce27 100644
--- a/xml/System.Xml.Schema/XmlSchemaComplexType.xml
+++ b/xml/System.Xml.Schema/XmlSchemaComplexType.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="complexType" /> element from XML Schema as specified by the World Wide Web Consortium (W3C). This class defines a complex type that determines the set of attributes and content of an element.</summary>
@@ -217,10 +213,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchemaObjectCollection</ReturnType>
@@ -271,10 +263,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchemaObjectTable</ReturnType>
@@ -670,10 +658,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Schema/XmlSchemaContentModel.xml b/xml/System.Xml.Schema/XmlSchemaContentModel.xml
index 5976e2cb52f..8be6f54f4de 100644
--- a/xml/System.Xml.Schema/XmlSchemaContentModel.xml
+++ b/xml/System.Xml.Schema/XmlSchemaContentModel.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the order and structure of the child elements of a type.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaDatatype.xml b/xml/System.Xml.Schema/XmlSchemaDatatype.xml
index 532d640c7ce..b5c3d839aa9 100644
--- a/xml/System.Xml.Schema/XmlSchemaDatatype.xml
+++ b/xml/System.Xml.Schema/XmlSchemaDatatype.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The <see cref="T:System.Xml.Schema.XmlSchemaDatatype" /> class is an abstract class for mapping XML Schema definition language (XSD) types to Common Language Runtime (CLR) types.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaDocumentation.xml b/xml/System.Xml.Schema/XmlSchemaDocumentation.xml
index e9f6225aa6f..be073d9d8e7 100644
--- a/xml/System.Xml.Schema/XmlSchemaDocumentation.xml
+++ b/xml/System.Xml.Schema/XmlSchemaDocumentation.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="documentation" /> element from XML Schema as specified by the World Wide Web Consortium (W3C). This class specifies information to be read or used by humans within an <see langword="annotation" />.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaElement.xml b/xml/System.Xml.Schema/XmlSchemaElement.xml
index 4936d775750..a7cdbd2e726 100644
--- a/xml/System.Xml.Schema/XmlSchemaElement.xml
+++ b/xml/System.Xml.Schema/XmlSchemaElement.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="element" /> element from XML Schema as specified by the World Wide Web Consortium (W3C). This class is the base class for all particle types and is used to describe an element in an XML document.</summary>
@@ -305,10 +301,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchemaObjectCollection</ReturnType>
@@ -1020,10 +1012,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1085,14 +1073,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1222,14 +1202,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1284,14 +1256,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Schema/XmlSchemaException.xml b/xml/System.Xml.Schema/XmlSchemaException.xml
index fdd3c96a3c0..73c47cf6897 100644
--- a/xml/System.Xml.Schema/XmlSchemaException.xml
+++ b/xml/System.Xml.Schema/XmlSchemaException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -214,10 +210,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" />
@@ -365,10 +357,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -512,10 +500,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Xml.Schema/XmlSchemaExternal.xml b/xml/System.Xml.Schema/XmlSchemaExternal.xml
index 55c2b7eb21f..821c454c488 100644
--- a/xml/System.Xml.Schema/XmlSchemaExternal.xml
+++ b/xml/System.Xml.Schema/XmlSchemaExternal.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>An abstract class. Provides information about the included schema.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaFacet.xml b/xml/System.Xml.Schema/XmlSchemaFacet.xml
index c4ce9b4d325..993958ff707 100644
--- a/xml/System.Xml.Schema/XmlSchemaFacet.xml
+++ b/xml/System.Xml.Schema/XmlSchemaFacet.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Abstract class for all facets that are used when simple types are derived by restriction.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaGroup.xml b/xml/System.Xml.Schema/XmlSchemaGroup.xml
index 89b7cc8cce7..f11430d821e 100644
--- a/xml/System.Xml.Schema/XmlSchemaGroup.xml
+++ b/xml/System.Xml.Schema/XmlSchemaGroup.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="group" /> element from XML Schema as specified by the World Wide Web Consortium (W3C). This class defines groups at the <see langword="schema" /> level that are referenced from the complex types. It groups a set of element declarations so that they can be incorporated as a group into complex type definitions.</summary>
@@ -269,10 +265,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Schema/XmlSchemaGroupBase.xml b/xml/System.Xml.Schema/XmlSchemaGroupBase.xml
index 6c0c8261c06..935dd24ff63 100644
--- a/xml/System.Xml.Schema/XmlSchemaGroupBase.xml
+++ b/xml/System.Xml.Schema/XmlSchemaGroupBase.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>An abstract class for <see cref="T:System.Xml.Schema.XmlSchemaAll" />, <see cref="T:System.Xml.Schema.XmlSchemaChoice" />, or <see cref="T:System.Xml.Schema.XmlSchemaSequence" />.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaGroupRef.xml b/xml/System.Xml.Schema/XmlSchemaGroupRef.xml
index 8587236bcd5..46c4b18261d 100644
--- a/xml/System.Xml.Schema/XmlSchemaGroupRef.xml
+++ b/xml/System.Xml.Schema/XmlSchemaGroupRef.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="group" /> element with <see langword="ref" /> attribute from the XML Schema as specified by the World Wide Web Consortium (W3C). This class is used within complex types that reference a <see langword="group" /> defined at the <see langword="schema" /> level.</summary>
@@ -138,10 +134,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Schema/XmlSchemaIdentityConstraint.xml b/xml/System.Xml.Schema/XmlSchemaIdentityConstraint.xml
index fcabbfd2c90..87ce6aa9808 100644
--- a/xml/System.Xml.Schema/XmlSchemaIdentityConstraint.xml
+++ b/xml/System.Xml.Schema/XmlSchemaIdentityConstraint.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Class for the identity constraints: <see langword="key" />, <see langword="keyref" />, and <see langword="unique" /> elements.</summary>
@@ -142,10 +138,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -262,10 +254,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Schema/XmlSchemaImport.xml b/xml/System.Xml.Schema/XmlSchemaImport.xml
index 15c88f00d03..e1dffafaced 100644
--- a/xml/System.Xml.Schema/XmlSchemaImport.xml
+++ b/xml/System.Xml.Schema/XmlSchemaImport.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="import" /> element from XML Schema as specified by the World Wide Web Consortium (W3C). This class is used to import schema components from other schemas.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaInclude.xml b/xml/System.Xml.Schema/XmlSchemaInclude.xml
index 31c3b3129ba..ecbd35f7722 100644
--- a/xml/System.Xml.Schema/XmlSchemaInclude.xml
+++ b/xml/System.Xml.Schema/XmlSchemaInclude.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="include" /> element from XML Schema as specified by the World Wide Web Consortium (W3C). This class is used to include declarations and definitions from an external schema. The included declarations and definitions are then available for processing in the containing schema.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaInference.xml b/xml/System.Xml.Schema/XmlSchemaInference.xml
index 34deb0c2183..a21944ad782 100644
--- a/xml/System.Xml.Schema/XmlSchemaInference.xml
+++ b/xml/System.Xml.Schema/XmlSchemaInference.xml
@@ -150,12 +150,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchemaSet</ReturnType>
       </ReturnValue>
@@ -233,12 +227,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchemaSet</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Schema/XmlSchemaInferenceException.xml b/xml/System.Xml.Schema/XmlSchemaInferenceException.xml
index 4d662939740..9f849af27e7 100644
--- a/xml/System.Xml.Schema/XmlSchemaInferenceException.xml
+++ b/xml/System.Xml.Schema/XmlSchemaInferenceException.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Xml.Schema/XmlSchemaInfo.xml b/xml/System.Xml.Schema/XmlSchemaInfo.xml
index 5eea6912956..1272cc103cd 100644
--- a/xml/System.Xml.Schema/XmlSchemaInfo.xml
+++ b/xml/System.Xml.Schema/XmlSchemaInfo.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the post-schema-validation infoset of a validated XML node.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaKeyref.xml b/xml/System.Xml.Schema/XmlSchemaKeyref.xml
index 6892aad54c8..abffef5a0b4 100644
--- a/xml/System.Xml.Schema/XmlSchemaKeyref.xml
+++ b/xml/System.Xml.Schema/XmlSchemaKeyref.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This class represents the <see langword="keyref" /> element from XMLSchema as specified by the World Wide Web Consortium (W3C).</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaNotation.xml b/xml/System.Xml.Schema/XmlSchemaNotation.xml
index 89a9949ed5d..21e977409c6 100644
--- a/xml/System.Xml.Schema/XmlSchemaNotation.xml
+++ b/xml/System.Xml.Schema/XmlSchemaNotation.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="notation" /> element from XML Schema as specified by the World Wide Web Consortium (W3C). An XML Schema <see langword="notation" /> declaration is a reconstruction of <see langword="XML 1.0 NOTATION" /> declarations. The purpose of notations is to describe the format of non-XML data within an XML document.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaObject.xml b/xml/System.Xml.Schema/XmlSchemaObject.xml
index fe2110a9370..f7d1973ed46 100644
--- a/xml/System.Xml.Schema/XmlSchemaObject.xml
+++ b/xml/System.Xml.Schema/XmlSchemaObject.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the root class for the Xml schema object model hierarchy and serves as a base class for classes such as the <see cref="T:System.Xml.Schema.XmlSchema" /> class.</summary>
@@ -280,14 +276,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Schema/XmlSchemaObjectCollection.xml b/xml/System.Xml.Schema/XmlSchemaObjectCollection.xml
index 5b11858db26..f71d56def37 100644
--- a/xml/System.Xml.Schema/XmlSchemaObjectCollection.xml
+++ b/xml/System.Xml.Schema/XmlSchemaObjectCollection.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A collection of <see cref="T:System.Xml.Schema.XmlSchemaObject" />s.</summary>
@@ -146,10 +142,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -626,12 +618,6 @@ schema.Includes.Add(include);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -679,12 +665,6 @@ schema.Includes.Add(include);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -732,12 +712,6 @@ schema.Includes.Add(include);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Schema/XmlSchemaObjectEnumerator.xml b/xml/System.Xml.Schema/XmlSchemaObjectEnumerator.xml
index 1a26f6d3ac6..17fcda80cf0 100644
--- a/xml/System.Xml.Schema/XmlSchemaObjectEnumerator.xml
+++ b/xml/System.Xml.Schema/XmlSchemaObjectEnumerator.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the enumerator for the <see cref="T:System.Xml.Schema.XmlSchemaObjectCollection" />.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaObjectTable.xml b/xml/System.Xml.Schema/XmlSchemaObjectTable.xml
index 77edf991acd..167651d5fc7 100644
--- a/xml/System.Xml.Schema/XmlSchemaObjectTable.xml
+++ b/xml/System.Xml.Schema/XmlSchemaObjectTable.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides the collections for contained elements in the <see cref="T:System.Xml.Schema.XmlSchema" /> class (for example, Attributes, AttributeGroups, Elements, and so on).</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaParticle.xml b/xml/System.Xml.Schema/XmlSchemaParticle.xml
index 8a5ad145f2c..d3f7b0c6098 100644
--- a/xml/System.Xml.Schema/XmlSchemaParticle.xml
+++ b/xml/System.Xml.Schema/XmlSchemaParticle.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Abstract class for that is the base class for all particle types (e.g. <see cref="T:System.Xml.Schema.XmlSchemaAny" />).</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaRedefine.xml b/xml/System.Xml.Schema/XmlSchemaRedefine.xml
index ced8f52a4e5..d5b30bfd8f2 100644
--- a/xml/System.Xml.Schema/XmlSchemaRedefine.xml
+++ b/xml/System.Xml.Schema/XmlSchemaRedefine.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="redefine" /> element from XML Schema as specified by the World Wide Web Consortium (W3C). This class can be used to allow simple and complex types, groups and attribute groups from external schema files to be redefined in the current schema. This class can also be used to provide versioning for the schema elements.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaSequence.xml b/xml/System.Xml.Schema/XmlSchemaSequence.xml
index e6fa8be47f5..72d4e264be2 100644
--- a/xml/System.Xml.Schema/XmlSchemaSequence.xml
+++ b/xml/System.Xml.Schema/XmlSchemaSequence.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="sequence" /> element (compositor) from the XML Schema as specified by the World Wide Web Consortium (W3C). The <see langword="sequence" /> requires the elements in the group to appear in the specified sequence within the containing element.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaSet.xml b/xml/System.Xml.Schema/XmlSchemaSet.xml
index 2437818e315..e2c98941c39 100644
--- a/xml/System.Xml.Schema/XmlSchemaSet.xml
+++ b/xml/System.Xml.Schema/XmlSchemaSet.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains a cache of XML Schema definition language (XSD) schemas.</summary>
@@ -344,12 +340,6 @@ schemaSet2.Add(schemaSet1);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchema</ReturnType>
       </ReturnValue>
@@ -504,12 +494,6 @@ schemaSet.Add("http://www.contoso.com/books", "http://www.contoso.com/books.xsd"
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchema</ReturnType>
       </ReturnValue>
@@ -741,12 +725,6 @@ schemaSet.Compile();
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1747,10 +1725,6 @@ foreach (XmlSchema schema in schemaSet.Schemas("http://www.contoso.com/books"))
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlResolver</ReturnType>
diff --git a/xml/System.Xml.Schema/XmlSchemaSimpleContent.xml b/xml/System.Xml.Schema/XmlSchemaSimpleContent.xml
index 239fe7b9d3d..49695b0c5f0 100644
--- a/xml/System.Xml.Schema/XmlSchemaSimpleContent.xml
+++ b/xml/System.Xml.Schema/XmlSchemaSimpleContent.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="simpleContent" /> element from XML Schema as specified by the World Wide Web Consortium (W3C). This class is for simple and complex types with simple content model.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaSimpleContentExtension.xml b/xml/System.Xml.Schema/XmlSchemaSimpleContentExtension.xml
index ea087b56faf..acfd379debe 100644
--- a/xml/System.Xml.Schema/XmlSchemaSimpleContentExtension.xml
+++ b/xml/System.Xml.Schema/XmlSchemaSimpleContentExtension.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="extension" /> element for simple content from XML Schema as specified by the World Wide Web Consortium (W3C). This class can be used to derive simple types by extension. Such derivations are used to extend the simple type content of the element by adding attributes.</summary>
@@ -138,14 +134,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Schema/XmlSchemaSimpleContentRestriction.xml b/xml/System.Xml.Schema/XmlSchemaSimpleContentRestriction.xml
index 6edda42f631..3508477194e 100644
--- a/xml/System.Xml.Schema/XmlSchemaSimpleContentRestriction.xml
+++ b/xml/System.Xml.Schema/XmlSchemaSimpleContentRestriction.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="restriction" /> element for simple content from XML Schema as specified by the World Wide Web Consortium (W3C). This class can be used to derive simple types by restriction. Such derivations can be used to restrict the range of values for the element to a subset of the values specified in the inherited simple type.</summary>
@@ -131,14 +127,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -252,14 +240,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Schema/XmlSchemaSimpleType.xml b/xml/System.Xml.Schema/XmlSchemaSimpleType.xml
index 65932707bbd..b097b69ee3e 100644
--- a/xml/System.Xml.Schema/XmlSchemaSimpleType.xml
+++ b/xml/System.Xml.Schema/XmlSchemaSimpleType.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="simpleType" /> element for simple content from XML Schema as specified by the World Wide Web Consortium (W3C). This class defines a simple type. Simple types can specify information and constraints for the value of attributes or elements with text-only content.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaSimpleTypeList.xml b/xml/System.Xml.Schema/XmlSchemaSimpleTypeList.xml
index 8be319d2779..3b647b42d13 100644
--- a/xml/System.Xml.Schema/XmlSchemaSimpleTypeList.xml
+++ b/xml/System.Xml.Schema/XmlSchemaSimpleTypeList.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="list" /> element from XML Schema as specified by the World Wide Web Consortium (W3C). This class can be used to define a <see langword="simpleType" /> element as a list of values of a specified data type.</summary>
@@ -267,14 +263,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Schema/XmlSchemaSimpleTypeRestriction.xml b/xml/System.Xml.Schema/XmlSchemaSimpleTypeRestriction.xml
index d2c06f44e25..85d0f8ba2e6 100644
--- a/xml/System.Xml.Schema/XmlSchemaSimpleTypeRestriction.xml
+++ b/xml/System.Xml.Schema/XmlSchemaSimpleTypeRestriction.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="restriction" /> element for simple types from XML Schema as specified by the World Wide Web Consortium (W3C). This class can be used restricting <see langword="simpleType" /> element.</summary>
@@ -138,14 +134,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Schema/XmlSchemaSimpleTypeUnion.xml b/xml/System.Xml.Schema/XmlSchemaSimpleTypeUnion.xml
index 52719d2de94..93a58d13e2c 100644
--- a/xml/System.Xml.Schema/XmlSchemaSimpleTypeUnion.xml
+++ b/xml/System.Xml.Schema/XmlSchemaSimpleTypeUnion.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the <see langword="union" /> element for simple types from XML Schema as specified by the World Wide Web Consortium (W3C). A <see langword="union" /> datatype can be used to specify the content of a <see langword="simpleType" />. The value of the <see langword="simpleType" /> element must be any one of a set of alternative datatypes specified in the union. Union types are always derived types and must comprise at least two alternative datatypes.</summary>
diff --git a/xml/System.Xml.Schema/XmlSchemaType.xml b/xml/System.Xml.Schema/XmlSchemaType.xml
index 0a314be8fba..a0d966edb30 100644
--- a/xml/System.Xml.Schema/XmlSchemaType.xml
+++ b/xml/System.Xml.Schema/XmlSchemaType.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>The base class for all simple types and complex types.</summary>
@@ -567,12 +563,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchemaComplexType</ReturnType>
       </ReturnValue>
@@ -627,12 +617,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchemaSimpleType</ReturnType>
       </ReturnValue>
@@ -692,12 +676,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchemaSimpleType</ReturnType>
       </ReturnValue>
@@ -975,10 +953,6 @@ Console.WriteLine(XmlSchemaType.IsDerivedFrom(xsdPositiveInteger, xsdInteger, Xm
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Schema/XmlSchemaValidationException.xml b/xml/System.Xml.Schema/XmlSchemaValidationException.xml
index a269ce2d680..f1a8187e54e 100644
--- a/xml/System.Xml.Schema/XmlSchemaValidationException.xml
+++ b/xml/System.Xml.Schema/XmlSchemaValidationException.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -182,10 +178,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -342,10 +334,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Xml.Schema/XmlSchemaValidator.xml b/xml/System.Xml.Schema/XmlSchemaValidator.xml
index 8377bbbbcc5..4e3598b7914 100644
--- a/xml/System.Xml.Schema/XmlSchemaValidator.xml
+++ b/xml/System.Xml.Schema/XmlSchemaValidator.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an XML Schema Definition Language (XSD) Schema validation engine. The <see cref="T:System.Xml.Schema.XmlSchemaValidator" /> class cannot be inherited.</summary>
@@ -824,12 +820,6 @@ validator.ValidateEndElement(null);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -894,14 +884,6 @@ validator.ValidateEndElement(null);
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1250,12 +1232,6 @@ validator.ValidateEndElement(null);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1354,10 +1330,6 @@ validator.ValidateEndElement(null);
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1427,12 +1399,6 @@ validator.ValidateEndElement(null);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -1527,12 +1493,6 @@ validator.ValidateEndElement(null);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1835,14 +1795,6 @@ validator.ValidateEndElement(null);
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.ValidationEventHandler</ReturnType>
@@ -1970,10 +1922,6 @@ validator.ValidateEndElement(null);
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Schema/XmlSchemaXPath.xml b/xml/System.Xml.Schema/XmlSchemaXPath.xml
index d9995d8b9bc..0dbeee18d49 100644
--- a/xml/System.Xml.Schema/XmlSchemaXPath.xml
+++ b/xml/System.Xml.Schema/XmlSchemaXPath.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the World Wide Web Consortium (W3C) <see langword="selector" /> element.</summary>
diff --git a/xml/System.Xml.Serialization/CodeIdentifier.xml b/xml/System.Xml.Serialization/CodeIdentifier.xml
index bb87bb3d5b1..03666a57a73 100644
--- a/xml/System.Xml.Serialization/CodeIdentifier.xml
+++ b/xml/System.Xml.Serialization/CodeIdentifier.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides static methods to convert input text into names for code entities.</summary>
diff --git a/xml/System.Xml.Serialization/CodeIdentifiers.xml b/xml/System.Xml.Serialization/CodeIdentifiers.xml
index b4efc3f7834..3dda26f4e6e 100644
--- a/xml/System.Xml.Serialization/CodeIdentifiers.xml
+++ b/xml/System.Xml.Serialization/CodeIdentifiers.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Maintains a group of names for related code entities or type mappings that are generated by .NET's XML serialization infrastructure.</summary>
diff --git a/xml/System.Xml.Serialization/IXmlSerializable.xml b/xml/System.Xml.Serialization/IXmlSerializable.xml
index 88a73afd6e7..6a84d169cb2 100644
--- a/xml/System.Xml.Serialization/IXmlSerializable.xml
+++ b/xml/System.Xml.Serialization/IXmlSerializable.xml
@@ -57,12 +57,6 @@
     <TypeForwarding From="System.Xml.Serialization" FromVersion="4.0.0.0" To="System.Xml" ToVersion="4.0.0.0" FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides custom formatting for XML serialization and deserialization.</summary>
     <remarks>
@@ -133,10 +127,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchema</ReturnType>
diff --git a/xml/System.Xml.Serialization/ImportContext.xml b/xml/System.Xml.Serialization/ImportContext.xml
index 09c0f42bc61..4c29baed897 100644
--- a/xml/System.Xml.Serialization/ImportContext.xml
+++ b/xml/System.Xml.Serialization/ImportContext.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Describes the context in which a set of schema is bound to .NET code entities.</summary>
@@ -86,10 +82,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/SoapAttributeAttribute.xml b/xml/System.Xml.Serialization/SoapAttributeAttribute.xml
index 3caa2e3d4c1..ba51ffc605c 100644
--- a/xml/System.Xml.Serialization/SoapAttributeAttribute.xml
+++ b/xml/System.Xml.Serialization/SoapAttributeAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that the <see cref="T:System.Xml.Serialization.XmlSerializer" /> must serialize the class member as an encoded SOAP attribute.</summary>
@@ -439,14 +435,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/SoapAttributeOverrides.xml b/xml/System.Xml.Serialization/SoapAttributeOverrides.xml
index e387c070241..0f5139da65f 100644
--- a/xml/System.Xml.Serialization/SoapAttributeOverrides.xml
+++ b/xml/System.Xml.Serialization/SoapAttributeOverrides.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Allows you to override attributes applied to properties, fields, and classes when you use an <see cref="T:System.Xml.Serialization.XmlSerializer" /> to serialize or deserialize an object as encoded SOAP.</summary>
diff --git a/xml/System.Xml.Serialization/SoapAttributes.xml b/xml/System.Xml.Serialization/SoapAttributes.xml
index 27cf0e825e9..be3ff077aef 100644
--- a/xml/System.Xml.Serialization/SoapAttributes.xml
+++ b/xml/System.Xml.Serialization/SoapAttributes.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of attribute objects that control how the <see cref="T:System.Xml.Serialization.XmlSerializer" /> serializes and deserializes SOAP methods.</summary>
@@ -179,12 +175,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="provider" Type="System.Reflection.ICustomAttributeProvider" />
       </Parameters>
diff --git a/xml/System.Xml.Serialization/SoapElementAttribute.xml b/xml/System.Xml.Serialization/SoapElementAttribute.xml
index c3c3e647a6a..90d2ce59986 100644
--- a/xml/System.Xml.Serialization/SoapElementAttribute.xml
+++ b/xml/System.Xml.Serialization/SoapElementAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that the public member value be serialized by the <see cref="T:System.Xml.Serialization.XmlSerializer" /> as an encoded SOAP XML element.</summary>
@@ -176,10 +172,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/SoapEnumAttribute.xml b/xml/System.Xml.Serialization/SoapEnumAttribute.xml
index b3f2fb1a196..cfae362ceb7 100644
--- a/xml/System.Xml.Serialization/SoapEnumAttribute.xml
+++ b/xml/System.Xml.Serialization/SoapEnumAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Controls how the <see cref="T:System.Xml.Serialization.XmlSerializer" /> serializes an enumeration member.</summary>
diff --git a/xml/System.Xml.Serialization/SoapIncludeAttribute.xml b/xml/System.Xml.Serialization/SoapIncludeAttribute.xml
index 58e27123155..2cc79ef16d9 100644
--- a/xml/System.Xml.Serialization/SoapIncludeAttribute.xml
+++ b/xml/System.Xml.Serialization/SoapIncludeAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Method | System.AttributeTargets.Struct, AllowMultiple=true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Method | System.AttributeTargets.Struct, AllowMultiple=true)&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/SoapReflectionImporter.xml b/xml/System.Xml.Serialization/SoapReflectionImporter.xml
index bcb54ad8533..2125623d99a 100644
--- a/xml/System.Xml.Serialization/SoapReflectionImporter.xml
+++ b/xml/System.Xml.Serialization/SoapReflectionImporter.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Generates mappings to SOAP-encoded messages from .NET types or Web service method information.</summary>
@@ -157,10 +153,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -208,10 +200,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -258,12 +246,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="attributeOverrides" Type="System.Xml.Serialization.SoapAttributeOverrides" />
         <Parameter Name="defaultNamespace" Type="System.String" />
diff --git a/xml/System.Xml.Serialization/SoapSchemaMember.xml b/xml/System.Xml.Serialization/SoapSchemaMember.xml
index 7836d0e96f4..d2fada8cc42 100644
--- a/xml/System.Xml.Serialization/SoapSchemaMember.xml
+++ b/xml/System.Xml.Serialization/SoapSchemaMember.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents certain attributes of a XSD &lt;<see langword="part" />&gt; element in a WSDL document for generating classes from the document.</summary>
@@ -196,14 +192,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/SoapTypeAttribute.xml b/xml/System.Xml.Serialization/SoapTypeAttribute.xml
index 869ee3e9987..b42a1c74bdd 100644
--- a/xml/System.Xml.Serialization/SoapTypeAttribute.xml
+++ b/xml/System.Xml.Serialization/SoapTypeAttribute.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Controls the schema generated by the <see cref="T:System.Xml.Serialization.XmlSerializer" /> when a class instance is serialized as SOAP encoded XML.</summary>
@@ -432,14 +428,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/UnreferencedObjectEventArgs.xml b/xml/System.Xml.Serialization/UnreferencedObjectEventArgs.xml
index c37c33b2534..126c0ec4d1b 100644
--- a/xml/System.Xml.Serialization/UnreferencedObjectEventArgs.xml
+++ b/xml/System.Xml.Serialization/UnreferencedObjectEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the known, but unreferenced, object found in an encoded SOAP XML stream during deserialization.</summary>
diff --git a/xml/System.Xml.Serialization/XmlAnyElementAttribute.xml b/xml/System.Xml.Serialization/XmlAnyElementAttribute.xml
index 79fda61b5a3..4c44352fb6e 100644
--- a/xml/System.Xml.Serialization/XmlAnyElementAttribute.xml
+++ b/xml/System.Xml.Serialization/XmlAnyElementAttribute.xml
@@ -66,10 +66,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that the member (a field that returns an array of <see cref="T:System.Xml.XmlElement" /> or <see cref="T:System.Xml.XmlNode" /> objects) contains objects that represent any XML element that has no corresponding member in the object being serialized or deserialized.</summary>
@@ -327,14 +323,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/XmlAnyElementAttributes.xml b/xml/System.Xml.Serialization/XmlAnyElementAttributes.xml
index 426a9725ed2..9848089f341 100644
--- a/xml/System.Xml.Serialization/XmlAnyElementAttributes.xml
+++ b/xml/System.Xml.Serialization/XmlAnyElementAttributes.xml
@@ -67,10 +67,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Xml.Serialization.XmlAnyElementAttribute" /> objects.</summary>
@@ -335,12 +331,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Xml.Serialization</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Serialization/XmlArrayAttribute.xml b/xml/System.Xml.Serialization/XmlArrayAttribute.xml
index cca99d002ea..c6c32925c8f 100644
--- a/xml/System.Xml.Serialization/XmlArrayAttribute.xml
+++ b/xml/System.Xml.Serialization/XmlArrayAttribute.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that the <see cref="T:System.Xml.Serialization.XmlSerializer" /> must serialize a particular class member as an array of XML elements.</summary>
@@ -275,14 +271,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/XmlArrayItemAttribute.xml b/xml/System.Xml.Serialization/XmlArrayItemAttribute.xml
index e35155e00bd..c1ebbeaacb9 100644
--- a/xml/System.Xml.Serialization/XmlArrayItemAttribute.xml
+++ b/xml/System.Xml.Serialization/XmlArrayItemAttribute.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an attribute that specifies the derived types that the <see cref="T:System.Xml.Serialization.XmlSerializer" /> can place in a serialized array.</summary>
@@ -419,14 +415,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -556,14 +544,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/XmlArrayItemAttributes.xml b/xml/System.Xml.Serialization/XmlArrayItemAttributes.xml
index 952f9b1137e..39d30e82a21 100644
--- a/xml/System.Xml.Serialization/XmlArrayItemAttributes.xml
+++ b/xml/System.Xml.Serialization/XmlArrayItemAttributes.xml
@@ -67,10 +67,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Xml.Serialization.XmlArrayItemAttribute" /> objects.</summary>
@@ -303,12 +299,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Xml.Serialization</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Serialization/XmlAttributeAttribute.xml b/xml/System.Xml.Serialization/XmlAttributeAttribute.xml
index ccfadbea2c8..cfebd1dc9da 100644
--- a/xml/System.Xml.Serialization/XmlAttributeAttribute.xml
+++ b/xml/System.Xml.Serialization/XmlAttributeAttribute.xml
@@ -66,10 +66,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that the <see cref="T:System.Xml.Serialization.XmlSerializer" /> must serialize the class member as an XML attribute.</summary>
@@ -404,14 +400,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -486,14 +474,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/XmlAttributeEventArgs.xml b/xml/System.Xml.Serialization/XmlAttributeEventArgs.xml
index 7df037a9a67..e22d782a979 100644
--- a/xml/System.Xml.Serialization/XmlAttributeEventArgs.xml
+++ b/xml/System.Xml.Serialization/XmlAttributeEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Xml.Serialization.XmlSerializer.UnknownAttribute" /> event.</summary>
@@ -350,10 +346,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/XmlAttributeOverrides.xml b/xml/System.Xml.Serialization/XmlAttributeOverrides.xml
index bd6fab83be8..662ec943934 100644
--- a/xml/System.Xml.Serialization/XmlAttributeOverrides.xml
+++ b/xml/System.Xml.Serialization/XmlAttributeOverrides.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Allows you to override property, field, and class attributes when you use the <see cref="T:System.Xml.Serialization.XmlSerializer" /> to serialize or deserialize an object.</summary>
diff --git a/xml/System.Xml.Serialization/XmlAttributes.xml b/xml/System.Xml.Serialization/XmlAttributes.xml
index 5f9bc086533..32eb72cabac 100644
--- a/xml/System.Xml.Serialization/XmlAttributes.xml
+++ b/xml/System.Xml.Serialization/XmlAttributes.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of attribute objects that control how the <see cref="T:System.Xml.Serialization.XmlSerializer" /> serializes and deserializes an object.</summary>
@@ -181,12 +177,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Xml.Serialization</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="provider" Type="System.Reflection.ICustomAttributeProvider" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
       </Parameters>
@@ -307,10 +297,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -459,10 +445,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -743,10 +725,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/XmlChoiceIdentifierAttribute.xml b/xml/System.Xml.Serialization/XmlChoiceIdentifierAttribute.xml
index 96dfb8a9ad2..99b5a729254 100644
--- a/xml/System.Xml.Serialization/XmlChoiceIdentifierAttribute.xml
+++ b/xml/System.Xml.Serialization/XmlChoiceIdentifierAttribute.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies that the member can be further detected by using an enumeration.</summary>
@@ -284,10 +280,6 @@ public enum ItemsChoiceType {
         <AssemblyName>System.Xml.Serialization</AssemblyName>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/XmlDeserializationEvents.xml b/xml/System.Xml.Serialization/XmlDeserializationEvents.xml
index 25199dc50cf..e7e12cad742 100644
--- a/xml/System.Xml.Serialization/XmlDeserializationEvents.xml
+++ b/xml/System.Xml.Serialization/XmlDeserializationEvents.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains fields that can be used to pass event delegates to a thread-safe <see cref="Overload:System.Xml.Serialization.XmlSerializer.Deserialize" /> method of the <see cref="T:System.Xml.Serialization.XmlSerializer" />.</summary>
diff --git a/xml/System.Xml.Serialization/XmlElementAttribute.xml b/xml/System.Xml.Serialization/XmlElementAttribute.xml
index 97680ca15a8..633d95193ad 100644
--- a/xml/System.Xml.Serialization/XmlElementAttribute.xml
+++ b/xml/System.Xml.Serialization/XmlElementAttribute.xml
@@ -66,10 +66,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates that a public field or property represents an XML element when the <see cref="T:System.Xml.Serialization.XmlSerializer" /> serializes or deserializes the object that contains it.</summary>
@@ -445,14 +441,6 @@ public class Things{
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -586,14 +574,6 @@ public class Things{
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/XmlElementAttributes.xml b/xml/System.Xml.Serialization/XmlElementAttributes.xml
index 0ee7a6ad18a..d2ac6f1d6b8 100644
--- a/xml/System.Xml.Serialization/XmlElementAttributes.xml
+++ b/xml/System.Xml.Serialization/XmlElementAttributes.xml
@@ -67,10 +67,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of <see cref="T:System.Xml.Serialization.XmlElementAttribute" /> objects used by the <see cref="T:System.Xml.Serialization.XmlSerializer" /> to override the default way it serializes a class.</summary>
@@ -323,12 +319,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Xml.Serialization</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Serialization/XmlElementEventArgs.xml b/xml/System.Xml.Serialization/XmlElementEventArgs.xml
index 98ffe4dd966..8afeeb7b06d 100644
--- a/xml/System.Xml.Serialization/XmlElementEventArgs.xml
+++ b/xml/System.Xml.Serialization/XmlElementEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Xml.Serialization.XmlSerializer.UnknownElement" /> event.</summary>
@@ -364,10 +360,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/XmlEnumAttribute.xml b/xml/System.Xml.Serialization/XmlEnumAttribute.xml
index 6d564fa52c7..fb6ed7414f2 100644
--- a/xml/System.Xml.Serialization/XmlEnumAttribute.xml
+++ b/xml/System.Xml.Serialization/XmlEnumAttribute.xml
@@ -66,10 +66,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Controls how the <see cref="T:System.Xml.Serialization.XmlSerializer" /> serializes an enumeration member.</summary>
diff --git a/xml/System.Xml.Serialization/XmlIncludeAttribute.xml b/xml/System.Xml.Serialization/XmlIncludeAttribute.xml
index 90a729d779a..9bec2abc91d 100644
--- a/xml/System.Xml.Serialization/XmlIncludeAttribute.xml
+++ b/xml/System.Xml.Serialization/XmlIncludeAttribute.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Method | System.AttributeTargets.Struct, AllowMultiple=true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Method | System.AttributeTargets.Struct, AllowMultiple=true)&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/XmlMapping.xml b/xml/System.Xml.Serialization/XmlMapping.xml
index 606f0fb6b03..2be0875783d 100644
--- a/xml/System.Xml.Serialization/XmlMapping.xml
+++ b/xml/System.Xml.Serialization/XmlMapping.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Supports mappings between .NET types and XML Schema data types.</summary>
@@ -150,10 +146,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -200,10 +192,6 @@
         <AssemblyName>System.Xml.Serialization</AssemblyName>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/XmlMemberMapping.xml b/xml/System.Xml.Serialization/XmlMemberMapping.xml
index 62dbca02a97..0aebac15789 100644
--- a/xml/System.Xml.Serialization/XmlMemberMapping.xml
+++ b/xml/System.Xml.Serialization/XmlMemberMapping.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Maps a code entity in a .NET Web service method to an element in a Web Services Description Language (WSDL) message.</summary>
@@ -341,10 +337,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -434,10 +426,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -486,10 +474,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Xml.Serialization/XmlMembersMapping.xml b/xml/System.Xml.Serialization/XmlMembersMapping.xml
index 6a7d9db97a7..a136c6cb7e6 100644
--- a/xml/System.Xml.Serialization/XmlMembersMapping.xml
+++ b/xml/System.Xml.Serialization/XmlMembersMapping.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides mappings between .NET Web service methods and Web Services Description Language (WSDL) messages that are defined for SOAP Web services.</summary>
@@ -215,10 +211,6 @@ See the <xref:System.Xml.Serialization.XmlMembersMapping> class for the conditio
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Serialization.XmlMemberMapping</ReturnType>
diff --git a/xml/System.Xml.Serialization/XmlNodeEventArgs.xml b/xml/System.Xml.Serialization/XmlNodeEventArgs.xml
index e4dcc1b0fdd..42e1dab9545 100644
--- a/xml/System.Xml.Serialization/XmlNodeEventArgs.xml
+++ b/xml/System.Xml.Serialization/XmlNodeEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Xml.Serialization.XmlSerializer.UnknownNode" /> event.</summary>
@@ -444,10 +440,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -512,10 +504,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Xml.Serialization/XmlReflectionImporter.xml b/xml/System.Xml.Serialization/XmlReflectionImporter.xml
index 4813c91c49e..c79d2bc09f2 100644
--- a/xml/System.Xml.Serialization/XmlReflectionImporter.xml
+++ b/xml/System.Xml.Serialization/XmlReflectionImporter.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Generates mappings to XML schema element declarations, including literal XML Schema Definition (XSD) message parts in a Web Services Description Language (WSDL) document, for .NET types or Web service method information.</summary>
@@ -181,10 +177,6 @@
         <AssemblyName>System.Xml.Serialization</AssemblyName>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -243,10 +235,6 @@
         <AssemblyName>System.Xml.Serialization</AssemblyName>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -304,12 +292,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Xml.Serialization</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="attributeOverrides" Type="System.Xml.Serialization.XmlAttributeOverrides" />
         <Parameter Name="defaultNamespace" Type="System.String" />
diff --git a/xml/System.Xml.Serialization/XmlReflectionMember.xml b/xml/System.Xml.Serialization/XmlReflectionMember.xml
index 23622ad9d7e..088e2a881e7 100644
--- a/xml/System.Xml.Serialization/XmlReflectionMember.xml
+++ b/xml/System.Xml.Serialization/XmlReflectionMember.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides mappings between code entities in .NET Web service methods and the content of Web Services Description Language (WSDL) messages that are defined for SOAP Web services.</summary>
@@ -275,14 +271,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/XmlRootAttribute.xml b/xml/System.Xml.Serialization/XmlRootAttribute.xml
index 470c768840b..1eaa41a547d 100644
--- a/xml/System.Xml.Serialization/XmlRootAttribute.xml
+++ b/xml/System.Xml.Serialization/XmlRootAttribute.xml
@@ -66,10 +66,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Controls XML serialization of the attribute target as an XML root element.</summary>
@@ -553,14 +549,6 @@ xmlns:xsd="http://www.w3.org/2001/XMLSchema" />
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/XmlSchemaEnumerator.xml b/xml/System.Xml.Serialization/XmlSchemaEnumerator.xml
index d30a345a543..a78259d748c 100644
--- a/xml/System.Xml.Serialization/XmlSchemaEnumerator.xml
+++ b/xml/System.Xml.Serialization/XmlSchemaEnumerator.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Enables iteration over a collection of <see cref="T:System.Xml.Schema.XmlSchema" /> objects.</summary>
diff --git a/xml/System.Xml.Serialization/XmlSchemaExporter.xml b/xml/System.Xml.Serialization/XmlSchemaExporter.xml
index 9215eb03a83..3359ce050d0 100644
--- a/xml/System.Xml.Serialization/XmlSchemaExporter.xml
+++ b/xml/System.Xml.Serialization/XmlSchemaExporter.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Populates <see cref="T:System.Xml.Schema.XmlSchema" /> objects with XML schema element declarations that are found in type mapping objects.</summary>
diff --git a/xml/System.Xml.Serialization/XmlSchemaImporter.xml b/xml/System.Xml.Serialization/XmlSchemaImporter.xml
index 3f7bb347d66..c05eecbc1bb 100644
--- a/xml/System.Xml.Serialization/XmlSchemaImporter.xml
+++ b/xml/System.Xml.Serialization/XmlSchemaImporter.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Generates internal mappings to .NET types for XML schema element declarations, including literal XSD message parts in a WSDL document.</summary>
diff --git a/xml/System.Xml.Serialization/XmlSchemaProviderAttribute.xml b/xml/System.Xml.Serialization/XmlSchemaProviderAttribute.xml
index b5dd52d15dc..d8f6b76f835 100644
--- a/xml/System.Xml.Serialization/XmlSchemaProviderAttribute.xml
+++ b/xml/System.Xml.Serialization/XmlSchemaProviderAttribute.xml
@@ -67,10 +67,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>When applied to a type, stores the name of a static method of the type that returns an XML schema and a <see cref="T:System.Xml.XmlQualifiedName" /> (or <see cref="T:System.Xml.Schema.XmlSchemaType" /> for anonymous types) that controls the serialization of the type.</summary>
diff --git a/xml/System.Xml.Serialization/XmlSchemas.xml b/xml/System.Xml.Serialization/XmlSchemas.xml
index 47bb28fa279..556cf8f3a2a 100644
--- a/xml/System.Xml.Serialization/XmlSchemas.xml
+++ b/xml/System.Xml.Serialization/XmlSchemas.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the collection of XML schemas.</summary>
@@ -336,10 +332,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -413,12 +405,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -931,10 +917,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchema</ReturnType>
@@ -1023,12 +1005,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1076,12 +1052,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1129,12 +1099,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Serialization/XmlSerializationReader+CollectionFixup.xml b/xml/System.Xml.Serialization/XmlSerializationReader+CollectionFixup.xml
index 30ab69e5c51..b7a35eb0860 100644
--- a/xml/System.Xml.Serialization/XmlSerializationReader+CollectionFixup.xml
+++ b/xml/System.Xml.Serialization/XmlSerializationReader+CollectionFixup.xml
@@ -210,10 +210,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/XmlSerializationReader+Fixup.xml b/xml/System.Xml.Serialization/XmlSerializationReader+Fixup.xml
index e1ba2a29b37..02ecadfb3db 100644
--- a/xml/System.Xml.Serialization/XmlSerializationReader+Fixup.xml
+++ b/xml/System.Xml.Serialization/XmlSerializationReader+Fixup.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Holds an <see cref="T:System.Xml.Serialization.XmlSerializationFixupCallback" /> delegate instance, plus the method's inputs; also serves as the parameter for the method.</summary>
@@ -111,12 +107,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="o" Type="System.Object">
           <Attributes>
@@ -241,10 +231,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/XmlSerializationReader.xml b/xml/System.Xml.Serialization/XmlSerializationReader.xml
index c40fec3ee70..a7abdc2b650 100644
--- a/xml/System.Xml.Serialization/XmlSerializationReader.xml
+++ b/xml/System.Xml.Serialization/XmlSerializationReader.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Controls deserialization by the <see cref="T:System.Xml.Serialization.XmlSerializer" /> class.</summary>
@@ -160,12 +156,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -222,12 +212,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -347,12 +331,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -465,12 +443,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
         <Attributes>
@@ -591,12 +563,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Exception</ReturnType>
       </ReturnValue>
@@ -919,12 +885,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Exception</ReturnType>
       </ReturnValue>
@@ -1584,12 +1544,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlQualifiedName</ReturnType>
       </ReturnValue>
@@ -2167,12 +2121,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlQualifiedName</ReturnType>
       </ReturnValue>
@@ -2223,12 +2171,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -2279,12 +2221,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2375,10 +2311,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -2445,10 +2377,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -2592,10 +2520,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -2663,10 +2587,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -2738,10 +2658,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -2932,10 +2848,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -2999,12 +2911,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
         <Attributes>
@@ -3164,12 +3070,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlDocument</ReturnType>
       </ReturnValue>
@@ -3224,12 +3124,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
       </ReturnValue>
@@ -3284,12 +3178,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3400,12 +3288,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Array</ReturnType>
       </ReturnValue>
@@ -3491,12 +3373,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -3551,12 +3427,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
         <Attributes>
@@ -3628,12 +3498,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -3688,12 +3552,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
         <Attributes>
@@ -4029,12 +3887,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
         <Attributes>
@@ -4098,12 +3950,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
         <Attributes>
@@ -4167,12 +4013,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
         <Attributes>
@@ -4236,12 +4076,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
         <Attributes>
@@ -4445,12 +4279,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4576,12 +4404,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4649,10 +4471,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -4702,12 +4520,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
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@@ -4755,12 +4567,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Serialization/XmlSerializationWriter.xml b/xml/System.Xml.Serialization/XmlSerializationWriter.xml
index e34f17b6e1c..254f37d001b 100644
--- a/xml/System.Xml.Serialization/XmlSerializationWriter.xml
+++ b/xml/System.Xml.Serialization/XmlSerializationWriter.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an abstract class used for controlling serialization by the <see cref="T:System.Xml.Serialization.XmlSerializer" /> class.</summary>
@@ -141,12 +137,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
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@@ -217,12 +207,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Exception</ReturnType>
       </ReturnValue>
@@ -290,12 +274,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Exception</ReturnType>
       </ReturnValue>
@@ -340,12 +318,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
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@@ -391,12 +363,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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-      </Attributes>
       <ReturnValue>
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@@ -450,12 +416,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
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@@ -503,12 +463,6 @@
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-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
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@@ -565,12 +519,6 @@
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-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
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       <ReturnValue>
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@@ -640,10 +588,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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@@ -702,10 +646,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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@@ -817,12 +757,6 @@
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@@ -938,12 +872,6 @@
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@@ -998,12 +926,6 @@
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@@ -1058,12 +980,6 @@
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.String</ReturnType>
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@@ -1136,12 +1052,6 @@
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-      <Attributes>
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
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@@ -1199,12 +1109,6 @@
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-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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@@ -1263,12 +1167,6 @@
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
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@@ -1795,12 +1693,6 @@
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Assembly</ReturnType>
       </ReturnValue>
@@ -1918,12 +1810,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1985,12 +1871,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2052,12 +1932,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2402,10 +2276,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -2686,10 +2556,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -2970,10 +2836,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -3041,10 +2903,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -3749,10 +3607,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -5002,14 +4856,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -5279,12 +5125,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5359,10 +5199,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -5553,10 +5389,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -5615,10 +5447,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -5686,10 +5514,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -6158,10 +5982,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -6219,12 +6039,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -6286,12 +6100,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Serialization/XmlSerializer.xml b/xml/System.Xml.Serialization/XmlSerializer.xml
index a155bce4936..de12355f02f 100644
--- a/xml/System.Xml.Serialization/XmlSerializer.xml
+++ b/xml/System.Xml.Serialization/XmlSerializer.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Serializes and deserializes objects into and from XML documents. The <see cref="T:System.Xml.Serialization.XmlSerializer" /> enables you to control how objects are encoded into XML.</summary>
@@ -653,10 +649,6 @@ The following example contains two main classes: `PurchaseOrder` and `Test`. The
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -759,10 +751,6 @@ The following example contains two main classes: `PurchaseOrder` and `Test`. The
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1382,10 +1370,6 @@ The following example contains two main classes: `PurchaseOrder` and `Test`. The
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from deserialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from deserialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -1537,10 +1521,6 @@ The following example contains two main classes: `PurchaseOrder` and `Test`. The
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from deserialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from deserialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">System.Object</ReturnType>
@@ -1732,10 +1712,6 @@ The following example contains two main classes: `PurchaseOrder` and `Test`. The
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Serialization.XmlSerializer[]</ReturnType>
@@ -2492,10 +2468,6 @@ The following example contains two main classes: `PurchaseOrder` and `Test`. The
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -2600,10 +2572,6 @@ The following example contains two main classes: `PurchaseOrder` and `Test`. The
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -2700,10 +2668,6 @@ The following example contains two main classes: `PurchaseOrder` and `Test`. The
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -2799,10 +2763,6 @@ The following example contains two main classes: `PurchaseOrder` and `Test`. The
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -2894,10 +2854,6 @@ The following example contains two main classes: `PurchaseOrder` and `Test`. The
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System.Xml.Serialization/XmlSerializerAssemblyAttribute.xml b/xml/System.Xml.Serialization/XmlSerializerAssemblyAttribute.xml
index f53c082364a..108c1aae8be 100644
--- a/xml/System.Xml.Serialization/XmlSerializerAssemblyAttribute.xml
+++ b/xml/System.Xml.Serialization/XmlSerializerAssemblyAttribute.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Applied to a Web service client proxy, enables you to specify an assembly that contains custom-made serializers.</summary>
diff --git a/xml/System.Xml.Serialization/XmlSerializerFactory.xml b/xml/System.Xml.Serialization/XmlSerializerFactory.xml
index f9b5fe43439..ccbd7370730 100644
--- a/xml/System.Xml.Serialization/XmlSerializerFactory.xml
+++ b/xml/System.Xml.Serialization/XmlSerializerFactory.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Creates typed versions of the <see cref="T:System.Xml.Serialization.XmlSerializer" /> for more efficient serialization.</summary>
@@ -511,10 +507,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -598,10 +590,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/XmlSerializerImplementation.xml b/xml/System.Xml.Serialization/XmlSerializerImplementation.xml
index d738fe161ed..1768e5a86a8 100644
--- a/xml/System.Xml.Serialization/XmlSerializerImplementation.xml
+++ b/xml/System.Xml.Serialization/XmlSerializerImplementation.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the reader, writer, and methods for pre-generated, typed serializers.</summary>
diff --git a/xml/System.Xml.Serialization/XmlSerializerNamespaces.xml b/xml/System.Xml.Serialization/XmlSerializerNamespaces.xml
index 7537c0b19c0..4d72ca52f39 100644
--- a/xml/System.Xml.Serialization/XmlSerializerNamespaces.xml
+++ b/xml/System.Xml.Serialization/XmlSerializerNamespaces.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains the XML namespaces and prefixes that the <see cref="T:System.Xml.Serialization.XmlSerializer" /> uses to generate qualified names in an XML-document instance.</summary>
diff --git a/xml/System.Xml.Serialization/XmlSerializerVersionAttribute.xml b/xml/System.Xml.Serialization/XmlSerializerVersionAttribute.xml
index 33e519f53c9..d20c762f03d 100644
--- a/xml/System.Xml.Serialization/XmlSerializerVersionAttribute.xml
+++ b/xml/System.Xml.Serialization/XmlSerializerVersionAttribute.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Signifies that the code was generated by the serialization infrastructure and can be reused for increased performance, when this attribute is applied to an assembly.</summary>
diff --git a/xml/System.Xml.Serialization/XmlTextAttribute.xml b/xml/System.Xml.Serialization/XmlTextAttribute.xml
index 7a651e72c6f..71b579b4985 100644
--- a/xml/System.Xml.Serialization/XmlTextAttribute.xml
+++ b/xml/System.Xml.Serialization/XmlTextAttribute.xml
@@ -66,10 +66,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Indicates to the <see cref="T:System.Xml.Serialization.XmlSerializer" /> that the member must be treated as XML text when the class that contains it is serialized or deserialized.</summary>
@@ -320,14 +316,6 @@ xmlns:xs="http://www.w3.org/2001/XMLSchema">
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/XmlTypeAttribute.xml b/xml/System.Xml.Serialization/XmlTypeAttribute.xml
index e0fcc70f381..d9aa37468d8 100644
--- a/xml/System.Xml.Serialization/XmlTypeAttribute.xml
+++ b/xml/System.Xml.Serialization/XmlTypeAttribute.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Controls the XML schema that is generated when the attribute target is serialized by the <see cref="T:System.Xml.Serialization.XmlSerializer" />.</summary>
@@ -454,14 +450,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Serialization/XmlTypeMapping.xml b/xml/System.Xml.Serialization/XmlTypeMapping.xml
index 8969bb1fc03..fd8e2b2fd5e 100644
--- a/xml/System.Xml.Serialization/XmlTypeMapping.xml
+++ b/xml/System.Xml.Serialization/XmlTypeMapping.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains a mapping of one type to another.</summary>
@@ -297,10 +293,6 @@ To set a namespace name of an object, apply a <xref:System.Xml.Serialization.Soa
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -364,10 +356,6 @@ To set a namespace name of an object, apply a <xref:System.Xml.Serialization.Soa
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Xml.XPath/Extensions.xml b/xml/System.Xml.XPath/Extensions.xml
index 7ed968c4d91..f1aeaddd47e 100644
--- a/xml/System.Xml.XPath/Extensions.xml
+++ b/xml/System.Xml.XPath/Extensions.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>This class contains the LINQ to XML extension methods that enable you to evaluate XPath expressions.</summary>
diff --git a/xml/System.Xml.XPath/IXPathNavigable.xml b/xml/System.Xml.XPath/IXPathNavigable.xml
index c97097f9d79..6f6856b08b3 100644
--- a/xml/System.Xml.XPath/IXPathNavigable.xml
+++ b/xml/System.Xml.XPath/IXPathNavigable.xml
@@ -49,12 +49,6 @@
     <TypeForwarding From="System.Xml.XPath" FromVersion="4.1.2.0" To="System.Xml.ReaderWriter" ToVersion="4.2.2.0" FrameworkAlternate="netcore-3.1" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an accessor to the <see cref="T:System.Xml.XPath.XPathNavigator" /> class.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Xml.XPath/XDocumentExtensions.xml b/xml/System.Xml.XPath/XDocumentExtensions.xml
index 80a3f9a8aec..62cc9b04d29 100644
--- a/xml/System.Xml.XPath/XDocumentExtensions.xml
+++ b/xml/System.Xml.XPath/XDocumentExtensions.xml
@@ -78,10 +78,6 @@
         <AssemblyVersion>4.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
diff --git a/xml/System.Xml.XPath/XPathDocument.xml b/xml/System.Xml.XPath/XPathDocument.xml
index bf304fc6754..4fe713b9517 100644
--- a/xml/System.Xml.XPath/XPathDocument.xml
+++ b/xml/System.Xml.XPath/XPathDocument.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a fast, read-only, in-memory representation of an XML document by using the XPath data model.</summary>
diff --git a/xml/System.Xml.XPath/XPathException.xml b/xml/System.Xml.XPath/XPathException.xml
index 5aa16e915d9..74883e06936 100644
--- a/xml/System.Xml.XPath/XPathException.xml
+++ b/xml/System.Xml.XPath/XPathException.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -145,10 +141,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -248,12 +240,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
         <Parameter Name="innerException" Type="System.Exception" />
diff --git a/xml/System.Xml.XPath/XPathExpression.xml b/xml/System.Xml.XPath/XPathExpression.xml
index 106fa6ced9b..a0d7c74a910 100644
--- a/xml/System.Xml.XPath/XPathExpression.xml
+++ b/xml/System.Xml.XPath/XPathExpression.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a typed class that represents a compiled XPath expression.</summary>
@@ -776,12 +772,6 @@ expression.AddSort("@ISBN", (IComparer)isbn);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.XPath/XPathItem.xml b/xml/System.Xml.XPath/XPathItem.xml
index 5c87d85cbd3..d2f11da1aab 100644
--- a/xml/System.Xml.XPath/XPathItem.xml
+++ b/xml/System.Xml.XPath/XPathItem.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an item in the XQuery 1.0 and XPath 2.0 Data Model.</summary>
@@ -809,10 +805,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchemaType</ReturnType>
diff --git a/xml/System.Xml.XPath/XPathNavigator.xml b/xml/System.Xml.XPath/XPathNavigator.xml
index c45cb067f04..11184729d17 100644
--- a/xml/System.Xml.XPath/XPathNavigator.xml
+++ b/xml/System.Xml.XPath/XPathNavigator.xml
@@ -78,10 +78,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("{debuggerDisplayProxy}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("{debuggerDisplayProxy}")&gt;]</AttributeName>
@@ -679,12 +675,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1130,12 +1120,6 @@ navigator.AppendChildElement(navigator.Prefix, "pages", LookupNamespaceURI(navig
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNodeOrder</ReturnType>
       </ReturnValue>
@@ -1282,12 +1266,6 @@ navigator.AppendChildElement(navigator.Prefix, "pages", LookupNamespaceURI(navig
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3516,12 +3494,6 @@ nav.Evaluate(expr);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3647,12 +3619,6 @@ navigator.InsertElementAfter(navigator.Prefix, "pages", LookupNamespaceURI(navig
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3779,12 +3745,6 @@ navigator.InsertElementBefore(navigator.Prefix, "pages", LookupNamespaceURI(navi
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5283,12 +5243,6 @@ navigator.InsertElementBefore(navigator.Prefix, "pages", LookupNamespaceURI(navi
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7356,12 +7310,6 @@ navigator.InsertElementBefore(navigator.Prefix, "pages", LookupNamespaceURI(navi
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -8032,10 +7980,6 @@ navigator.PrependChildElement(navigator.Prefix, "pages", LookupNamespaceURI(navi
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.IXmlSchemaInfo</ReturnType>
@@ -9171,12 +9115,6 @@ XPathNodeIterator ni = nav.Select(expr);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XPath.XPathNavigator</ReturnType>
       </ReturnValue>
@@ -9685,10 +9623,6 @@ XPathNodeIterator ni = nav.Select(expr);
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -10462,10 +10396,6 @@ XPathNodeIterator ni = nav.Select(expr);
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.XmlSchemaType</ReturnType>
diff --git a/xml/System.Xml.XPath/XPathNodeIterator.xml b/xml/System.Xml.XPath/XPathNodeIterator.xml
index 0bf23f28de7..910b2fc2f67 100644
--- a/xml/System.Xml.XPath/XPathNodeIterator.xml
+++ b/xml/System.Xml.XPath/XPathNodeIterator.xml
@@ -240,12 +240,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XPath.XPathNodeIterator</ReturnType>
       </ReturnValue>
@@ -356,10 +350,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XPath.XPathNavigator</ReturnType>
@@ -519,12 +509,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IEnumerator</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml.Xsl/IXsltContextFunction.xml b/xml/System.Xml.Xsl/IXsltContextFunction.xml
index 66527c1d58e..add22fa8184 100644
--- a/xml/System.Xml.Xsl/IXsltContextFunction.xml
+++ b/xml/System.Xml.Xsl/IXsltContextFunction.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Xml.ReaderWriter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an interface to a given function defined in the Extensible Stylesheet Language for Transformations (XSLT) style sheet during runtime execution.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Xml.Xsl/IXsltContextVariable.xml b/xml/System.Xml.Xsl/IXsltContextVariable.xml
index 26cd0349efa..2cb5aa67e13 100644
--- a/xml/System.Xml.Xsl/IXsltContextVariable.xml
+++ b/xml/System.Xml.Xsl/IXsltContextVariable.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Xml.ReaderWriter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an interface to a given variable that is defined in the style sheet during runtime execution.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Xml.Xsl/XslCompiledTransform.xml b/xml/System.Xml.Xsl/XslCompiledTransform.xml
index 0582c574797..c36597ce305 100644
--- a/xml/System.Xml.Xsl/XslCompiledTransform.xml
+++ b/xml/System.Xml.Xsl/XslCompiledTransform.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Transforms XML data using an XSLT style sheet.</summary>
@@ -691,12 +687,6 @@ xslt.Load(typeof(bookOrders));
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -781,12 +771,6 @@ xslt.Load(typeof(bookOrders));
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -861,12 +845,6 @@ xslt.Load(typeof(bookOrders));
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -944,10 +922,6 @@ xslt.Load(typeof(bookOrders));
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Xsl/XslTransform.xml b/xml/System.Xml.Xsl/XslTransform.xml
index 63d734a2369..973b576da49 100644
--- a/xml/System.Xml.Xsl/XslTransform.xml
+++ b/xml/System.Xml.Xsl/XslTransform.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-2.0;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
       <AttributeName Language="C#">[System.Obsolete("This class has been deprecated. Please use System.Xml.Xsl.XslCompiledTransform instead. http://go.microsoft.com/fwlink/?linkid=14202")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("This class has been deprecated. Please use System.Xml.Xsl.XslCompiledTransform instead. http://go.microsoft.com/fwlink/?linkid=14202")&gt;]</AttributeName>
@@ -3188,10 +3184,6 @@ Root node is book.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1">
           <AttributeName Language="C#">[System.Obsolete("You should pass XmlResolver to Transform() method")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("You should pass XmlResolver to Transform() method")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Xsl/XsltArgumentList.xml b/xml/System.Xml.Xsl/XsltArgumentList.xml
index d36dc24f98f..0abe24870e4 100644
--- a/xml/System.Xml.Xsl/XsltArgumentList.xml
+++ b/xml/System.Xml.Xsl/XsltArgumentList.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains a variable number of arguments which are either XSLT parameters or extension objects.</summary>
diff --git a/xml/System.Xml.Xsl/XsltCompileException.xml b/xml/System.Xml.Xsl/XsltCompileException.xml
index 457e7edf9b9..86754064642 100644
--- a/xml/System.Xml.Xsl/XsltCompileException.xml
+++ b/xml/System.Xml.Xsl/XsltCompileException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System.Xml.Xsl/XsltContext.xml b/xml/System.Xml.Xsl/XsltContext.xml
index 9398743ac35..48ca5bfc85a 100644
--- a/xml/System.Xml.Xsl/XsltContext.xml
+++ b/xml/System.Xml.Xsl/XsltContext.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encapsulates the current execution context of the Extensible Stylesheet Language for Transformations (XSLT) processor allowing XML Path Language (XPath) to resolve functions, parameters, and namespaces within XPath expressions.</summary>
diff --git a/xml/System.Xml.Xsl/XsltException.xml b/xml/System.Xml.Xsl/XsltException.xml
index 5126835f4f6..0e705325d48 100644
--- a/xml/System.Xml.Xsl/XsltException.xml
+++ b/xml/System.Xml.Xsl/XsltException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -498,10 +494,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml.Xsl/XsltMessageEncounteredEventArgs.xml b/xml/System.Xml.Xsl/XsltMessageEncounteredEventArgs.xml
index 985dc764f16..9dea153a186 100644
--- a/xml/System.Xml.Xsl/XsltMessageEncounteredEventArgs.xml
+++ b/xml/System.Xml.Xsl/XsltMessageEncounteredEventArgs.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Xml.Xsl.XsltArgumentList.XsltMessageEncountered" /> event.</summary>
diff --git a/xml/System.Xml.Xsl/XsltSettings.xml b/xml/System.Xml.Xsl/XsltSettings.xml
index d7b425f83f9..ccff5553e0d 100644
--- a/xml/System.Xml.Xsl/XsltSettings.xml
+++ b/xml/System.Xml.Xsl/XsltSettings.xml
@@ -43,10 +43,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies the XSLT features to support during execution of the XSLT style sheet.</summary>
diff --git a/xml/System.Xml/IApplicationResourceStreamResolver.xml b/xml/System.Xml/IApplicationResourceStreamResolver.xml
index a992b76e523..c2f4ea5b574 100644
--- a/xml/System.Xml/IApplicationResourceStreamResolver.xml
+++ b/xml/System.Xml/IApplicationResourceStreamResolver.xml
@@ -32,10 +32,6 @@
       <AttributeName Language="C#">[System.Obsolete("This API supports the .NET Framework infrastructure and is not intended to be used directly from your code.", true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("This API supports the .NET Framework infrastructure and is not intended to be used directly from your code.", true)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an application resource stream resolver.</summary>
diff --git a/xml/System.Xml/IFragmentCapableXmlDictionaryWriter.xml b/xml/System.Xml/IFragmentCapableXmlDictionaryWriter.xml
index 43503043310..e0810610fad 100644
--- a/xml/System.Xml/IFragmentCapableXmlDictionaryWriter.xml
+++ b/xml/System.Xml/IFragmentCapableXmlDictionaryWriter.xml
@@ -36,12 +36,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Runtime.Serialization.Xml" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Contains properties and methods that when implemented by a <see cref="T:System.Xml.XmlDictionaryWriter" />, allows processing of XML fragments.</summary>
     <remarks>
diff --git a/xml/System.Xml/IHasXmlNode.xml b/xml/System.Xml/IHasXmlNode.xml
index 9d9e043aff4..1f1a048956b 100644
--- a/xml/System.Xml/IHasXmlNode.xml
+++ b/xml/System.Xml/IHasXmlNode.xml
@@ -37,12 +37,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Xml.ReaderWriter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Enables a class to return an <see cref="T:System.Xml.XmlNode" /> from the current context or position.</summary>
     <remarks>
diff --git a/xml/System.Xml/IStreamProvider.xml b/xml/System.Xml/IStreamProvider.xml
index 76ef52d4dc7..69fa99b2882 100644
--- a/xml/System.Xml/IStreamProvider.xml
+++ b/xml/System.Xml/IStreamProvider.xml
@@ -36,12 +36,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Runtime.Serialization.Xml" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Represents an interface that can be implemented by classes providing streams.</summary>
     <remarks>
diff --git a/xml/System.Xml/IXmlBinaryReaderInitializer.xml b/xml/System.Xml/IXmlBinaryReaderInitializer.xml
index 614d321a49c..acd129326e0 100644
--- a/xml/System.Xml/IXmlBinaryReaderInitializer.xml
+++ b/xml/System.Xml/IXmlBinaryReaderInitializer.xml
@@ -36,12 +36,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Runtime.Serialization.Xml" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides methods for reinitializing a binary reader to read a new document.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Xml/IXmlBinaryWriterInitializer.xml b/xml/System.Xml/IXmlBinaryWriterInitializer.xml
index ce4955d5c7e..d3b7804bef3 100644
--- a/xml/System.Xml/IXmlBinaryWriterInitializer.xml
+++ b/xml/System.Xml/IXmlBinaryWriterInitializer.xml
@@ -36,12 +36,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Runtime.Serialization.Xml" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Specifies implementation requirements for XML binary writers that derive from this interface.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Xml/IXmlDictionary.xml b/xml/System.Xml/IXmlDictionary.xml
index 10f53a70f62..785d3c20f86 100644
--- a/xml/System.Xml/IXmlDictionary.xml
+++ b/xml/System.Xml/IXmlDictionary.xml
@@ -39,12 +39,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Runtime.Serialization.Xml" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>An <see langword="interface" /> that defines the contract that an Xml dictionary must implement to be used by <see cref="T:System.Xml.XmlDictionaryReader" /> and <see cref="T:System.Xml.XmlDictionaryWriter" /> implementations.</summary>
     <remarks>
@@ -107,12 +101,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml/IXmlNamespaceResolver.xml b/xml/System.Xml/IXmlNamespaceResolver.xml
index aaf166d119c..2ea3965187f 100644
--- a/xml/System.Xml/IXmlNamespaceResolver.xml
+++ b/xml/System.Xml/IXmlNamespaceResolver.xml
@@ -40,12 +40,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Xml.ReaderWriter" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides read-only access to a set of prefix and namespace mappings.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Xml/IXmlTextReaderInitializer.xml b/xml/System.Xml/IXmlTextReaderInitializer.xml
index 1a54056a4cb..be30afa4d8f 100644
--- a/xml/System.Xml/IXmlTextReaderInitializer.xml
+++ b/xml/System.Xml/IXmlTextReaderInitializer.xml
@@ -36,12 +36,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Runtime.Serialization.Xml" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Specifies implementation requirements for XML text readers that derive from this interface.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Xml/IXmlTextWriterInitializer.xml b/xml/System.Xml/IXmlTextWriterInitializer.xml
index 7fe0196f600..960c0e1f223 100644
--- a/xml/System.Xml/IXmlTextWriterInitializer.xml
+++ b/xml/System.Xml/IXmlTextWriterInitializer.xml
@@ -36,12 +36,6 @@
     <TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Runtime.Serialization.Xml" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
   </TypeForwardingChain>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Specifies implementation requirements for XML text writers that derive from this interface.</summary>
     <remarks>To be added.</remarks>
diff --git a/xml/System.Xml/NameTable.xml b/xml/System.Xml/NameTable.xml
index f4988d6b719..4ab152dd5ff 100644
--- a/xml/System.Xml/NameTable.xml
+++ b/xml/System.Xml/NameTable.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Implements a single-threaded <see cref="T:System.Xml.XmlNameTable" />.</summary>
diff --git a/xml/System.Xml/UniqueId.xml b/xml/System.Xml/UniqueId.xml
index 3972cf01f07..42f2dd29f7f 100644
--- a/xml/System.Xml/UniqueId.xml
+++ b/xml/System.Xml/UniqueId.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A unique identifier optimized for Guids.</summary>
@@ -497,12 +493,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -641,12 +631,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -698,12 +682,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml/XmlAttribute.xml b/xml/System.Xml/XmlAttribute.xml
index f1e157259b3..7767318b1e6 100644
--- a/xml/System.Xml/XmlAttribute.xml
+++ b/xml/System.Xml/XmlAttribute.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an attribute. Valid and default values for the attribute are defined in a document type definition (DTD) or schema.</summary>
@@ -517,12 +513,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
       </ReturnValue>
@@ -605,12 +595,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
       </ReturnValue>
@@ -978,10 +962,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlElement</ReturnType>
@@ -1045,10 +1025,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
diff --git a/xml/System.Xml/XmlAttributeCollection.xml b/xml/System.Xml/XmlAttributeCollection.xml
index db1e59cb1b0..40a5ac79395 100644
--- a/xml/System.Xml/XmlAttributeCollection.xml
+++ b/xml/System.Xml/XmlAttributeCollection.xml
@@ -68,10 +68,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of attributes that can be accessed by name or index.</summary>
@@ -595,10 +591,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlAttribute</ReturnType>
@@ -743,12 +735,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlAttribute</ReturnType>
       </ReturnValue>
@@ -886,12 +872,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlAttribute</ReturnType>
       </ReturnValue>
@@ -958,12 +938,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml/XmlBinaryReaderSession.xml b/xml/System.Xml/XmlBinaryReaderSession.xml
index df4e40a1921..d124e5aee85 100644
--- a/xml/System.Xml/XmlBinaryReaderSession.xml
+++ b/xml/System.Xml/XmlBinaryReaderSession.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Enables optimized strings to be managed in a dynamic way.</summary>
@@ -249,12 +245,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml/XmlBinaryWriterSession.xml b/xml/System.Xml/XmlBinaryWriterSession.xml
index e03088a9cff..c749f1c0744 100644
--- a/xml/System.Xml/XmlBinaryWriterSession.xml
+++ b/xml/System.Xml/XmlBinaryWriterSession.xml
@@ -171,12 +171,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml/XmlCDataSection.xml b/xml/System.Xml/XmlCDataSection.xml
index f2f1e8337d3..a8ea9d4c327 100644
--- a/xml/System.Xml/XmlCDataSection.xml
+++ b/xml/System.Xml/XmlCDataSection.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a CDATA section.</summary>
@@ -375,10 +371,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
@@ -429,10 +421,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
diff --git a/xml/System.Xml/XmlCharacterData.xml b/xml/System.Xml/XmlCharacterData.xml
index 05cbefd18ca..c29789b308d 100644
--- a/xml/System.Xml/XmlCharacterData.xml
+++ b/xml/System.Xml/XmlCharacterData.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides text manipulation methods that are used by several classes.</summary>
@@ -166,12 +162,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -399,12 +389,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -511,12 +495,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -636,14 +614,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml/XmlComment.xml b/xml/System.Xml/XmlComment.xml
index 4ffc78dfaff..860fda379f4 100644
--- a/xml/System.Xml/XmlComment.xml
+++ b/xml/System.Xml/XmlComment.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the content of an XML comment.</summary>
diff --git a/xml/System.Xml/XmlConvert.xml b/xml/System.Xml/XmlConvert.xml
index 271446b477b..48c2d2862c3 100644
--- a/xml/System.Xml/XmlConvert.xml
+++ b/xml/System.Xml/XmlConvert.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Encodes and decodes XML names, and provides methods for converting between common language runtime types and XML Schema definition language (XSD) types. When converting data types, the values returned are locale-independent.</summary>
@@ -138,12 +134,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -218,10 +208,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -298,10 +284,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -380,10 +362,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -3445,12 +3423,6 @@ catch(Exception e) {
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">System.String</ReturnType>
         <Attributes>
diff --git a/xml/System.Xml/XmlDataDocument.xml b/xml/System.Xml/XmlDataDocument.xml
index f77a13b23dd..dff6c96e865 100644
--- a/xml/System.Xml/XmlDataDocument.xml
+++ b/xml/System.Xml/XmlDataDocument.xml
@@ -39,10 +39,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Allows structured data to be stored, retrieved, and manipulated through a relational <see cref="T:System.Data.DataSet" />.</summary>
@@ -645,12 +641,6 @@ class MyXmlDataDocument : XmlDataDocument {
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Data.DataRow</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml/XmlDeclaration.xml b/xml/System.Xml/XmlDeclaration.xml
index 35c3aabf351..54b0a665761 100644
--- a/xml/System.Xml/XmlDeclaration.xml
+++ b/xml/System.Xml/XmlDeclaration.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the XML declaration node &lt;?xml version='1.0'...?&gt;.</summary>
@@ -586,14 +582,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Xml/XmlDictionary.xml b/xml/System.Xml/XmlDictionary.xml
index a10393196b6..73c6d73a028 100644
--- a/xml/System.Xml/XmlDictionary.xml
+++ b/xml/System.Xml/XmlDictionary.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Implements a dictionary used to optimize Windows Communication Foundation (WCF)'s XML reader/writer implementations.</summary>
@@ -323,12 +319,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml/XmlDictionaryReader.xml b/xml/System.Xml/XmlDictionaryReader.xml
index 6638c3d17d0..3f41504f6a8 100644
--- a/xml/System.Xml/XmlDictionaryReader.xml
+++ b/xml/System.Xml/XmlDictionaryReader.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>An <see langword="abstract" /> class that the Windows Communication Foundation (WCF) derives from <see cref="T:System.Xml.XmlReader" /> to do serialization and deserialization.</summary>
@@ -2257,12 +2253,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6891,12 +6881,6 @@ An entry in <paramref name="strings" /> is <see langword="null" />.</exception>
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6951,12 +6935,6 @@ An entry in <paramref name="strings" /> is <see langword="null" />.</exception>
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7011,12 +6989,6 @@ An entry in <paramref name="strings" /> is <see langword="null" />.</exception>
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml/XmlDictionaryReaderQuotas.xml b/xml/System.Xml/XmlDictionaryReaderQuotas.xml
index b241d4cca1f..1d8fe815cf2 100644
--- a/xml/System.Xml/XmlDictionaryReaderQuotas.xml
+++ b/xml/System.Xml/XmlDictionaryReaderQuotas.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Contains configurable quota values for XmlDictionaryReaders.</summary>
diff --git a/xml/System.Xml/XmlDictionaryString.xml b/xml/System.Xml/XmlDictionaryString.xml
index 799790a853b..2ed16a962d0 100644
--- a/xml/System.Xml/XmlDictionaryString.xml
+++ b/xml/System.Xml/XmlDictionaryString.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an entry stored in a <see cref="T:System.Xml.XmlDictionary" />.</summary>
diff --git a/xml/System.Xml/XmlDictionaryWriter.xml b/xml/System.Xml/XmlDictionaryWriter.xml
index 2941bb1f5b3..d0ebe058cb5 100644
--- a/xml/System.Xml/XmlDictionaryWriter.xml
+++ b/xml/System.Xml/XmlDictionaryWriter.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an abstract class that Windows Communication Foundation (WCF) derives from <see cref="T:System.Xml.XmlWriter" /> to do serialization and deserialization.</summary>
@@ -2481,12 +2477,6 @@ binarywriter.WriteEndAttribute();
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2543,12 +2533,6 @@ binarywriter.WriteEndAttribute();
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2677,12 +2661,6 @@ An <see cref="T:System.Xml.XmlDictionaryWriter" /> asynchronous method was calle
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2739,12 +2717,6 @@ An <see cref="T:System.Xml.XmlDictionaryWriter" /> asynchronous method was calle
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3040,12 +3012,6 @@ An <see cref="T:System.Xml.XmlDictionaryWriter" /> asynchronous method was calle
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3167,12 +3133,6 @@ An <see cref="T:System.Xml.XmlDictionaryWriter" /> asynchronous method was calle
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3230,12 +3190,6 @@ An <see cref="T:System.Xml.XmlDictionaryWriter" /> asynchronous method was calle
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3535,12 +3489,6 @@ An <see cref="T:System.Xml.XmlDictionaryWriter" /> asynchronous method was calle
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml/XmlDocument.xml b/xml/System.Xml/XmlDocument.xml
index 89757ddd165..0ff2f28cde9 100644
--- a/xml/System.Xml/XmlDocument.xml
+++ b/xml/System.Xml/XmlDocument.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an XML document. You can use this class to load, validate, edit, add, and position XML in a document.</summary>
@@ -898,12 +894,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Xml.XmlDocument</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlDocumentType</ReturnType>
       </ReturnValue>
@@ -1348,10 +1338,6 @@ elem=doc.CreateElement("xy", "item", "urn:abc");
         <AssemblyName>System.Xml.XmlDocument</AssemblyName>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -2224,10 +2210,6 @@ elem=doc.CreateElement("xy", "item", "urn:abc");
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlElement</ReturnType>
@@ -2295,10 +2277,6 @@ elem=doc.CreateElement("xy", "item", "urn:abc");
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlDocumentType</ReturnType>
@@ -3977,10 +3955,6 @@ elem=doc.CreateElement("xy", "item", "urn:abc");
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlDocument</ReturnType>
@@ -4032,10 +4006,6 @@ elem=doc.CreateElement("xy", "item", "urn:abc");
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
@@ -4684,10 +4654,6 @@ doc.Save(Console.Out);
         <AssemblyName>System.Xml.XmlDocument</AssemblyName>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -4990,10 +4956,6 @@ doc.Save(Console.Out);
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlResolver</ReturnType>
diff --git a/xml/System.Xml/XmlDocumentFragment.xml b/xml/System.Xml/XmlDocumentFragment.xml
index dfda8baa7de..aaf1132e863 100644
--- a/xml/System.Xml/XmlDocumentFragment.xml
+++ b/xml/System.Xml/XmlDocumentFragment.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a lightweight object that is useful for tree insert operations.</summary>
@@ -492,10 +488,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
diff --git a/xml/System.Xml/XmlDocumentType.xml b/xml/System.Xml/XmlDocumentType.xml
index 9a12fdfad5e..357f57e6915 100644
--- a/xml/System.Xml/XmlDocumentType.xml
+++ b/xml/System.Xml/XmlDocumentType.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the document type declaration.</summary>
@@ -95,12 +91,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String">
           <Attributes>
@@ -290,10 +280,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -625,10 +611,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -680,10 +662,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml/XmlElement.xml b/xml/System.Xml/XmlElement.xml
index 01c907ad384..234ca26126f 100644
--- a/xml/System.Xml/XmlElement.xml
+++ b/xml/System.Xml/XmlElement.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an element.</summary>
@@ -511,12 +507,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlAttribute</ReturnType>
       </ReturnValue>
@@ -1287,10 +1277,6 @@ This property is a Microsoft extension to the Document Object Model (DOM).
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
@@ -1449,10 +1435,6 @@ This property is a Microsoft extension to the Document Object Model (DOM).
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1839,12 +1821,6 @@ This property is a Microsoft extension to the Document Object Model (DOM).
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
       </ReturnValue>
@@ -1971,12 +1947,6 @@ This property is a Microsoft extension to the Document Object Model (DOM).
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlAttribute</ReturnType>
       </ReturnValue>
@@ -2179,12 +2149,6 @@ This property is a Microsoft extension to the Document Object Model (DOM).
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml/XmlEntity.xml b/xml/System.Xml/XmlEntity.xml
index 4bd3c6e66a1..a9cc9732e55 100644
--- a/xml/System.Xml/XmlEntity.xml
+++ b/xml/System.Xml/XmlEntity.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an entity declaration, such as &lt;!ENTITY... &gt;.</summary>
@@ -569,10 +565,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -693,10 +685,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -764,10 +752,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml/XmlEntityReference.xml b/xml/System.Xml/XmlEntityReference.xml
index 3604b1d7f62..0e3aabe5867 100644
--- a/xml/System.Xml/XmlEntityReference.xml
+++ b/xml/System.Xml/XmlEntityReference.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents an entity reference node.</summary>
@@ -468,14 +464,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Xml/XmlException.xml b/xml/System.Xml/XmlException.xml
index 9efc7b4bba6..5a93e5665a4 100644
--- a/xml/System.Xml/XmlException.xml
+++ b/xml/System.Xml/XmlException.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -227,10 +223,6 @@ The `XmlException` is a generic XML-related error that is thrown if problems occ
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
@@ -391,10 +383,6 @@ The `XmlException` is a generic XML-related error that is thrown if problems occ
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -572,10 +560,6 @@ Showing that line position is 1-based (the error is found in the second characte
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Xml/XmlImplementation.xml b/xml/System.Xml/XmlImplementation.xml
index 0709a2f5d2b..38160302513 100644
--- a/xml/System.Xml/XmlImplementation.xml
+++ b/xml/System.Xml/XmlImplementation.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Defines the context for a set of <see cref="T:System.Xml.XmlDocument" /> objects.</summary>
diff --git a/xml/System.Xml/XmlLinkedNode.xml b/xml/System.Xml/XmlLinkedNode.xml
index ea3fd409c50..a4e8d6f4d6d 100644
--- a/xml/System.Xml/XmlLinkedNode.xml
+++ b/xml/System.Xml/XmlLinkedNode.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Gets the node immediately preceding or following this node.</summary>
diff --git a/xml/System.Xml/XmlNameTable.xml b/xml/System.Xml/XmlNameTable.xml
index 2d92c4e0458..e9955be556c 100644
--- a/xml/System.Xml/XmlNameTable.xml
+++ b/xml/System.Xml/XmlNameTable.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Table of atomized string objects.</summary>
diff --git a/xml/System.Xml/XmlNamedNodeMap.xml b/xml/System.Xml/XmlNamedNodeMap.xml
index 92fbfaf4cae..60649a4a94d 100644
--- a/xml/System.Xml/XmlNamedNodeMap.xml
+++ b/xml/System.Xml/XmlNamedNodeMap.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a collection of nodes that can be accessed by name or index.</summary>
@@ -190,12 +186,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IEnumerator</ReturnType>
       </ReturnValue>
@@ -263,12 +253,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
       </ReturnValue>
@@ -459,12 +443,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml/XmlNamespaceManager.xml b/xml/System.Xml/XmlNamespaceManager.xml
index a70964ceb3f..ef1298cd164 100644
--- a/xml/System.Xml/XmlNamespaceManager.xml
+++ b/xml/System.Xml/XmlNamespaceManager.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Resolves, adds, and removes namespaces to a collection and provides scope management for these namespaces.</summary>
@@ -796,10 +792,6 @@ writer.WriteEndElement()
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml/XmlNode.xml b/xml/System.Xml/XmlNode.xml
index e87fbffd98c..1085bbb1c2e 100644
--- a/xml/System.Xml/XmlNode.xml
+++ b/xml/System.Xml/XmlNode.xml
@@ -77,10 +77,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a single node in the XML document.</summary>
@@ -230,10 +226,6 @@ Display the modified XML...
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlAttributeCollection</ReturnType>
@@ -649,12 +641,6 @@ Display the modified XML...
       <AssemblyInfo>
         <AssemblyName>System.Xml.XmlDocument</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XPath.XPathNavigator</ReturnType>
       </ReturnValue>
@@ -726,10 +712,6 @@ Display the modified XML...
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -1200,12 +1182,6 @@ d.</elem>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
       </ReturnValue>
@@ -1298,12 +1274,6 @@ d.</elem>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
       </ReturnValue>
@@ -1606,10 +1576,6 @@ d.</elem>
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1970,10 +1936,6 @@ d.</elem>
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
@@ -2200,10 +2162,6 @@ d.</elem>
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlDocument</ReturnType>
@@ -2270,10 +2228,6 @@ d.</elem>
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
@@ -2523,10 +2477,6 @@ d.</elem>
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
@@ -2588,10 +2538,6 @@ d.</elem>
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
@@ -3596,14 +3542,6 @@ book = root.SelectSingleNode("descendant::ab:book[ab:title=""'Emma'""]", nsmgr)
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Xml/XmlNodeChangedEventArgs.xml b/xml/System.Xml/XmlNodeChangedEventArgs.xml
index 8e2fb31fb79..d0c32a696d2 100644
--- a/xml/System.Xml/XmlNodeChangedEventArgs.xml
+++ b/xml/System.Xml/XmlNodeChangedEventArgs.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides data for the <see cref="E:System.Xml.XmlDocument.NodeChanged" />, <see cref="E:System.Xml.XmlDocument.NodeChanging" />, <see cref="E:System.Xml.XmlDocument.NodeInserted" />, <see cref="E:System.Xml.XmlDocument.NodeInserting" />, <see cref="E:System.Xml.XmlDocument.NodeRemoved" /> and <see cref="E:System.Xml.XmlDocument.NodeRemoving" /> events.</summary>
diff --git a/xml/System.Xml/XmlNodeList.xml b/xml/System.Xml/XmlNodeList.xml
index 7e95fd9c9fb..55e9be4c430 100644
--- a/xml/System.Xml/XmlNodeList.xml
+++ b/xml/System.Xml/XmlNodeList.xml
@@ -232,12 +232,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Collections.IEnumerator</ReturnType>
       </ReturnValue>
@@ -305,12 +299,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
       </ReturnValue>
@@ -377,10 +365,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml/XmlNodeReader.xml b/xml/System.Xml/XmlNodeReader.xml
index 8a5879ff70a..60d5c67757e 100644
--- a/xml/System.Xml/XmlNodeReader.xml
+++ b/xml/System.Xml/XmlNodeReader.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a reader that provides fast, non-cached forward only access to XML data in an <see cref="T:System.Xml.XmlNode" />.</summary>
@@ -700,12 +696,6 @@ Output:
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -2646,10 +2636,6 @@ This property does not move the reader.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.IXmlSchemaInfo</ReturnType>
diff --git a/xml/System.Xml/XmlNotation.xml b/xml/System.Xml/XmlNotation.xml
index 3b8c0cf2a2f..817d457e7ec 100644
--- a/xml/System.Xml/XmlNotation.xml
+++ b/xml/System.Xml/XmlNotation.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a notation declaration, such as &lt;!NOTATION... &gt;.</summary>
@@ -464,10 +460,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -535,10 +527,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml/XmlParserContext.xml b/xml/System.Xml/XmlParserContext.xml
index efad816c65d..de12c4b5252 100644
--- a/xml/System.Xml/XmlParserContext.xml
+++ b/xml/System.Xml/XmlParserContext.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides all the context information required by the <see cref="T:System.Xml.XmlReader" /> to parse an XML fragment.</summary>
@@ -115,12 +111,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="nt" Type="System.Xml.XmlNameTable" />
         <Parameter Name="nsMgr" Type="System.Xml.XmlNamespaceManager" />
@@ -183,12 +173,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="nt" Type="System.Xml.XmlNameTable" />
         <Parameter Name="nsMgr" Type="System.Xml.XmlNamespaceManager" />
@@ -244,10 +228,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -332,12 +312,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="nt" Type="System.Xml.XmlNameTable" />
         <Parameter Name="nsMgr" Type="System.Xml.XmlNamespaceManager" />
@@ -519,14 +493,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -643,14 +609,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -716,14 +674,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml/XmlProcessingInstruction.xml b/xml/System.Xml/XmlProcessingInstruction.xml
index c7678669013..a97aed82474 100644
--- a/xml/System.Xml/XmlProcessingInstruction.xml
+++ b/xml/System.Xml/XmlProcessingInstruction.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a processing instruction, which XML defines to keep processor-specific information in the text of the document.</summary>
diff --git a/xml/System.Xml/XmlQualifiedName.xml b/xml/System.Xml/XmlQualifiedName.xml
index 9e3bd1a236c..f65e247c130 100644
--- a/xml/System.Xml/XmlQualifiedName.xml
+++ b/xml/System.Xml/XmlQualifiedName.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -170,12 +166,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" />
       </Parameters>
@@ -227,12 +217,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="name" Type="System.String" />
         <Parameter Name="ns" Type="System.String" />
@@ -321,12 +305,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -569,12 +547,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -628,12 +600,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml/XmlReader.xml b/xml/System.Xml/XmlReader.xml
index a57a53b01b8..3b7d111039b 100644
--- a/xml/System.Xml/XmlReader.xml
+++ b/xml/System.Xml/XmlReader.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a reader that provides fast, noncached, forward-only access to XML data.</summary>
@@ -1880,12 +1876,6 @@ Note: In <see href="https://go.microsoft.com/fwlink/?LinkID=247912">.NET for Win
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -2831,10 +2821,6 @@ public class Sample
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -9084,10 +9070,6 @@ An <see cref="T:System.Xml.XmlReader" /> method was called before a previous asy
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.Schema.IXmlSchemaInfo</ReturnType>
@@ -9153,10 +9135,6 @@ If you have to get the post-schema-validation information set (PSVI) for an elem
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlReaderSettings</ReturnType>
diff --git a/xml/System.Xml/XmlReaderSettings.xml b/xml/System.Xml/XmlReaderSettings.xml
index 26ef68cc02a..c6c95790594 100644
--- a/xml/System.Xml/XmlReaderSettings.xml
+++ b/xml/System.Xml/XmlReaderSettings.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies a set of features to support on the <see cref="T:System.Xml.XmlReader" /> object created by the <see cref="Overload:System.Xml.XmlReader.Create" /> method.</summary>
@@ -1154,14 +1150,6 @@ There is an error in XML document (MaxCharactersInDocument, ).
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -1647,10 +1635,6 @@ The output is as follows:
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlResolver</ReturnType>
diff --git a/xml/System.Xml/XmlResolver.xml b/xml/System.Xml/XmlResolver.xml
index 6b88957198e..de3fc64a289 100644
--- a/xml/System.Xml/XmlResolver.xml
+++ b/xml/System.Xml/XmlResolver.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Resolves external XML resources named by a Uniform Resource Identifier (URI).</summary>
@@ -245,12 +241,6 @@ resolver.Credentials = myCache;
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -402,12 +392,6 @@ resolver.Credentials = myCache;
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Uri</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml/XmlSecureResolver.xml b/xml/System.Xml/XmlSecureResolver.xml
index 75d4da8a59d..c0142e50839 100644
--- a/xml/System.Xml/XmlSecureResolver.xml
+++ b/xml/System.Xml/XmlSecureResolver.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Helps to secure another implementation of <see cref="T:System.Xml.XmlResolver" /> by wrapping the <see cref="T:System.Xml.XmlResolver" /> object and restricting the resources that the underlying <see cref="T:System.Xml.XmlResolver" /> has access to.</summary>
@@ -391,12 +387,6 @@ See the constructor reference topics for examples of these types of restrictions
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -533,12 +523,6 @@ See the constructor reference topics for examples of these types of restrictions
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Uri</ReturnType>
       </ReturnValue>
diff --git a/xml/System.Xml/XmlSignificantWhitespace.xml b/xml/System.Xml/XmlSignificantWhitespace.xml
index c677a0acce1..3ba42d00557 100644
--- a/xml/System.Xml/XmlSignificantWhitespace.xml
+++ b/xml/System.Xml/XmlSignificantWhitespace.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents white space between markup in a mixed content node or white space within an xml:space= 'preserve' scope. This is also referred to as significant white space.</summary>
@@ -384,10 +380,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
@@ -438,10 +430,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
@@ -494,14 +482,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Xml/XmlText.xml b/xml/System.Xml/XmlText.xml
index fde5005d326..07f4bed137b 100644
--- a/xml/System.Xml/XmlText.xml
+++ b/xml/System.Xml/XmlText.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the text content of an element or attribute.</summary>
@@ -373,10 +369,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
@@ -427,10 +419,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
@@ -539,14 +527,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Xml/XmlTextReader.xml b/xml/System.Xml/XmlTextReader.xml
index 36162e0ad83..2aab7eb45d6 100644
--- a/xml/System.Xml/XmlTextReader.xml
+++ b/xml/System.Xml/XmlTextReader.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a reader that provides fast, non-cached, forward-only access to XML data.
@@ -1486,10 +1482,6 @@ XmlTextReader reader = new XmlTextReader(s);
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Encoding</ReturnType>
@@ -1817,12 +1809,6 @@ XmlTextReader reader = new XmlTextReader(s);
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -5158,10 +5144,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlResolver</ReturnType>
diff --git a/xml/System.Xml/XmlTextWriter.xml b/xml/System.Xml/XmlTextWriter.xml
index 113e2e11332..ebd040b07ef 100644
--- a/xml/System.Xml/XmlTextWriter.xml
+++ b/xml/System.Xml/XmlTextWriter.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a writer that provides a fast, non-cached, forward-only way of generating streams or files containing XML data that conforms to the W3C Extensible Markup Language (XML) 1.0 and the Namespaces in XML recommendations.
@@ -294,10 +290,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.IO.Stream</ReturnType>
@@ -1026,12 +1018,6 @@ The `XmlTextWriter` allows you to set this property to any character. To ensure
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1239,12 +1225,6 @@ The `XmlTextWriter` allows you to set this property to any character. To ensure
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1311,12 +1291,6 @@ The `XmlTextWriter` allows you to set this property to any character. To ensure
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2167,12 +2141,6 @@ writer.WriteStartElement("root");
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2404,12 +2372,6 @@ writer.WriteStartElement("root");
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2535,12 +2497,6 @@ writer.WriteStartElement("root");
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2677,12 +2633,6 @@ writer.WriteStartElement("root");
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2754,10 +2704,6 @@ writer.WriteStartElement("root");
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Xml/XmlUrlResolver.xml b/xml/System.Xml/XmlUrlResolver.xml
index 8bca38abd3b..20f3ba4b1f7 100644
--- a/xml/System.Xml/XmlUrlResolver.xml
+++ b/xml/System.Xml/XmlUrlResolver.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Resolves external XML resources named by a Uniform Resource Identifier (URI).</summary>
@@ -175,10 +171,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;set: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -388,10 +380,6 @@ resolver.Credentials = myCache;
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Diagnostics.DebuggerStepThrough]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerStepThrough&gt;]</AttributeName>
diff --git a/xml/System.Xml/XmlValidatingReader.xml b/xml/System.Xml/XmlValidatingReader.xml
index f10f41344f9..fb557be618c 100644
--- a/xml/System.Xml/XmlValidatingReader.xml
+++ b/xml/System.Xml/XmlValidatingReader.xml
@@ -64,10 +64,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
       <AttributeName Language="C#">[System.Obsolete("Use XmlReader created by XmlReader.Create() method using appropriate XmlReaderSettings instead. http://go.microsoft.com/fwlink/?linkid=14202")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Obsolete("Use XmlReader created by XmlReader.Create() method using appropriate XmlReaderSettings instead. http://go.microsoft.com/fwlink/?linkid=14202")&gt;]</AttributeName>
@@ -737,10 +733,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Text.Encoding</ReturnType>
@@ -1075,12 +1067,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -3247,12 +3233,6 @@ The text node can be either an element or an attribute text node.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -3499,10 +3479,6 @@ The text node can be either an element or an attribute text node.
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System.Xml/XmlWhitespace.xml b/xml/System.Xml/XmlWhitespace.xml
index 18b0978580a..86968db4b8f 100644
--- a/xml/System.Xml/XmlWhitespace.xml
+++ b/xml/System.Xml/XmlWhitespace.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents white space in element content.</summary>
@@ -384,10 +380,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
@@ -438,10 +430,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlNode</ReturnType>
@@ -494,14 +482,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[set: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;set: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System.Xml/XmlWriter.xml b/xml/System.Xml/XmlWriter.xml
index 60979ad6efa..d38df76e120 100644
--- a/xml/System.Xml/XmlWriter.xml
+++ b/xml/System.Xml/XmlWriter.xml
@@ -65,10 +65,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a writer that provides a fast, non-cached, forward-only way to generate streams or files that contain XML data.</summary>
@@ -1402,10 +1398,6 @@ An <see cref="T:System.Xml.XmlWriter" /> asynchronous method was called without
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Xml.XmlWriterSettings</ReturnType>
@@ -1760,10 +1752,6 @@ An <see cref="T:System.Xml.XmlWriter" /> method was called before a previous asy
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -1859,12 +1847,6 @@ An <see cref="T:System.Xml.XmlWriter" /> method was called before a previous asy
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1957,10 +1939,6 @@ An <see cref="T:System.Xml.XmlWriter" /> method was called before a previous asy
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -2330,12 +2308,6 @@ An <see cref="T:System.Xml.XmlWriter" /> asynchronous method was called without
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2735,12 +2707,6 @@ An <see cref="T:System.Xml.XmlWriter" /> asynchronous method was called without
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2878,12 +2844,6 @@ An <see cref="T:System.Xml.XmlWriter" /> asynchronous method was called without
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -2968,12 +2928,6 @@ An <see cref="T:System.Xml.XmlWriter" /> method was called before a previous asy
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Threading.Tasks.Task</ReturnType>
       </ReturnValue>
@@ -3156,12 +3110,6 @@ An <see cref="T:System.Xml.XmlWriter" /> asynchronous method was called without
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3242,12 +3190,6 @@ An <see cref="T:System.Xml.XmlWriter" /> asynchronous method was called without
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5435,12 +5377,6 @@ An <see cref="T:System.Xml.XmlWriter" /> method was called before a previous asy
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -6059,12 +5995,6 @@ An <see cref="T:System.Xml.XmlWriter" /> method was called before a previous asy
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -6269,12 +6199,6 @@ An <see cref="T:System.Xml.XmlWriter" /> asynchronous method was called without
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -7168,12 +7092,6 @@ An <see cref="T:System.Xml.XmlWriter" /> method was called before a previous asy
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -7236,12 +7154,6 @@ An <see cref="T:System.Xml.XmlWriter" /> method was called before a previous asy
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -7377,10 +7289,6 @@ An <see cref="T:System.Xml.XmlWriter" /> asynchronous method was called without
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System.Xml/XmlWriterSettings.xml b/xml/System.Xml/XmlWriterSettings.xml
index cbf4430f72e..9671a0bf21b 100644
--- a/xml/System.Xml/XmlWriterSettings.xml
+++ b/xml/System.Xml/XmlWriterSettings.xml
@@ -47,10 +47,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Specifies a set of features to support on the <see cref="T:System.Xml.XmlWriter" /> object created by the <see cref="Overload:System.Xml.XmlWriter.Create" /> method.</summary>
diff --git a/xml/System/AccessViolationException.xml b/xml/System/AccessViolationException.xml
index dcba73f610d..e78ba4a8273 100644
--- a/xml/System/AccessViolationException.xml
+++ b/xml/System/AccessViolationException.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -215,10 +211,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/Action`10.xml b/xml/System/Action`10.xml
index 107197a9192..ced7567346a 100644
--- a/xml/System/Action`10.xml
+++ b/xml/System/Action`10.xml
@@ -99,10 +99,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Action`11.xml b/xml/System/Action`11.xml
index 2a720472c08..3079a727b20 100644
--- a/xml/System/Action`11.xml
+++ b/xml/System/Action`11.xml
@@ -104,10 +104,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Action`12.xml b/xml/System/Action`12.xml
index 44dfa178653..6974639630e 100644
--- a/xml/System/Action`12.xml
+++ b/xml/System/Action`12.xml
@@ -109,10 +109,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Action`13.xml b/xml/System/Action`13.xml
index 5b1063d8d80..b2840635103 100644
--- a/xml/System/Action`13.xml
+++ b/xml/System/Action`13.xml
@@ -114,10 +114,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Action`14.xml b/xml/System/Action`14.xml
index 5bb29ba1f2f..ff5a2a48a69 100644
--- a/xml/System/Action`14.xml
+++ b/xml/System/Action`14.xml
@@ -119,10 +119,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Action`15.xml b/xml/System/Action`15.xml
index 5d1bd3c23cc..f29e576a445 100644
--- a/xml/System/Action`15.xml
+++ b/xml/System/Action`15.xml
@@ -124,10 +124,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Action`16.xml b/xml/System/Action`16.xml
index db4b6e0d873..9235ec753cb 100644
--- a/xml/System/Action`16.xml
+++ b/xml/System/Action`16.xml
@@ -129,10 +129,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Action`4.xml b/xml/System/Action`4.xml
index e0224338d1a..774697a11c4 100644
--- a/xml/System/Action`4.xml
+++ b/xml/System/Action`4.xml
@@ -78,10 +78,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.CompilerServices.TypeForwardedFrom("System.Core, Version=3.5.0.0, Culture=Neutral, PublicKeyToken=b77a5c561934e089")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.TypeForwardedFrom("System.Core, Version=3.5.0.0, Culture=Neutral, PublicKeyToken=b77a5c561934e089")&gt;]</AttributeName>
diff --git a/xml/System/Action`5.xml b/xml/System/Action`5.xml
index 55f8eb6406b..54818354f6a 100644
--- a/xml/System/Action`5.xml
+++ b/xml/System/Action`5.xml
@@ -74,10 +74,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Action`6.xml b/xml/System/Action`6.xml
index 9e743b05e04..eac4c05cd04 100644
--- a/xml/System/Action`6.xml
+++ b/xml/System/Action`6.xml
@@ -79,10 +79,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Action`7.xml b/xml/System/Action`7.xml
index 2d711d05466..b46902d8807 100644
--- a/xml/System/Action`7.xml
+++ b/xml/System/Action`7.xml
@@ -84,10 +84,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Action`8.xml b/xml/System/Action`8.xml
index c1209f72737..9ffe630703f 100644
--- a/xml/System/Action`8.xml
+++ b/xml/System/Action`8.xml
@@ -89,10 +89,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Action`9.xml b/xml/System/Action`9.xml
index a9965120219..6d4926090f7 100644
--- a/xml/System/Action`9.xml
+++ b/xml/System/Action`9.xml
@@ -94,10 +94,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Activator.xml b/xml/System/Activator.xml
index 68c335a63a1..2622da49082 100644
--- a/xml/System/Activator.xml
+++ b/xml/System/Activator.xml
@@ -59,10 +59,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -757,10 +753,6 @@ Note: In <see href="https://go.microsoft.com/fwlink/?LinkID=247912">.NET for Win
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1084,10 +1076,6 @@ An error occurred when attempting remote activation in a target specified in <pa
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1201,10 +1189,6 @@ An error occurred when attempting remote activation in a target specified in <pa
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1316,10 +1300,6 @@ An error occurred when attempting remote activation in a target specified in <pa
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1438,10 +1418,6 @@ An error occurred when attempting remote activation in a target specified in <pa
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Type and its constructor could be removed")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Type and its constructor could be removed")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2212,10 +2188,6 @@ Note: In <see href="https://go.microsoft.com/fwlink/?LinkID=247912">.NET for Win
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Type and its constructor could be removed")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Type and its constructor could be removed")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.Remoting.ObjectHandle</ReturnType>
diff --git a/xml/System/AggregateException.xml b/xml/System/AggregateException.xml
index 44f25ae00fe..a785e73704b 100644
--- a/xml/System/AggregateException.xml
+++ b/xml/System/AggregateException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("Count = {InnerExceptions.Count}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("Count = {InnerExceptions.Count}")&gt;]</AttributeName>
@@ -292,12 +288,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
       </Parameters>
diff --git a/xml/System/AppContext.xml b/xml/System/AppContext.xml
index e69ec9befe7..251a1d9b34b 100644
--- a/xml/System/AppContext.xml
+++ b/xml/System/AppContext.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides members for setting and retrieving data about an application's context.</summary>
@@ -350,10 +346,6 @@ In .NET 5 and later versions, for bundled assemblies, the value returned is the
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netstandard-2.0">
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
diff --git a/xml/System/AppDomain.xml b/xml/System/AppDomain.xml
index d159ec07035..ed06b0d16f1 100644
--- a/xml/System/AppDomain.xml
+++ b/xml/System/AppDomain.xml
@@ -68,10 +68,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -219,10 +215,6 @@ Application domains, which are represented by <xref:System.AppDomain> objects, h
           <AttributeName Language="C#">[System.Obsolete("AppDomain.AppendPrivatePath has been deprecated and is not supported.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("AppDomain.AppendPrivatePath has been deprecated and is not supported.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
           <AttributeName Language="C#">[System.Obsolete("AppDomain.AppendPrivatePath has been deprecated. Please investigate the use of AppDomainSetup.PrivateBinPath instead. http://go.microsoft.com/fwlink/?linkid=14202")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("AppDomain.AppendPrivatePath has been deprecated. Please investigate the use of AppDomainSetup.PrivateBinPath instead. http://go.microsoft.com/fwlink/?linkid=14202")&gt;]</AttributeName>
@@ -432,14 +424,6 @@ Application domains, which are represented by <xref:System.AppDomain> objects, h
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[add: System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;add: System.Security.SecurityCritical&gt;]</AttributeName>
@@ -524,14 +508,6 @@ Application domains, which are represented by <xref:System.AppDomain> objects, h
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[add: System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;add: System.Security.SecurityCritical&gt;]</AttributeName>
@@ -1681,10 +1657,6 @@ This method overload uses the <xref:System.AppDomainSetup> information from the
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Type and its constructor could be removed")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Type and its constructor could be removed")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2098,10 +2070,6 @@ This method overload uses the <xref:System.AppDomainSetup> information from the
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Type and its constructor could be removed")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Type and its constructor could be removed")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2560,10 +2528,6 @@ This method overload uses the <xref:System.AppDomainSetup> information from the
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Type and its constructor could be removed")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Type and its constructor could be removed")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2986,10 +2950,6 @@ This method overload uses the <xref:System.AppDomainSetup> information from the
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Type and its constructor could be removed")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Type and its constructor could be removed")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -4494,14 +4454,6 @@ This method overload uses the <xref:System.AppDomainSetup> information from the
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[add: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;add: System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -4578,10 +4530,6 @@ This method overload uses the <xref:System.AppDomainSetup> information from the
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[get: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -5082,10 +5030,6 @@ This method overload uses the <xref:System.AppDomainSetup> information from the
           <AttributeName Language="C#">[System.Obsolete("Code Access Security is not supported or honored by the runtime.", DiagnosticId="SYSLIB0003", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Code Access Security is not supported or honored by the runtime.", DiagnosticId="SYSLIB0003", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -7559,14 +7503,6 @@ This method overload uses the <xref:System.AppDomainSetup> information from the
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[add: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;add: System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -7642,14 +7578,6 @@ This method overload uses the <xref:System.AppDomainSetup> information from the
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[add: System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;add: System.Security.SecurityCritical&gt;]</AttributeName>
@@ -7789,10 +7717,6 @@ This method overload uses the <xref:System.AppDomainSetup> information from the
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -7862,14 +7786,6 @@ This method overload uses the <xref:System.AppDomainSetup> information from the
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[add: System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;add: System.Security.SecurityCritical&gt;]</AttributeName>
@@ -8023,10 +7939,6 @@ This method overload uses the <xref:System.AppDomainSetup> information from the
           <AttributeName Language="C#">[System.Obsolete("AppDomain.SetCachePath has been deprecated and is not supported.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("AppDomain.SetCachePath has been deprecated and is not supported.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
           <AttributeName Language="C#">[System.Obsolete("AppDomain.SetCachePath has been deprecated. Please investigate the use of AppDomainSetup.CachePath instead. http://go.microsoft.com/fwlink/?linkid=14202")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("AppDomain.SetCachePath has been deprecated. Please investigate the use of AppDomainSetup.CachePath instead. http://go.microsoft.com/fwlink/?linkid=14202")&gt;]</AttributeName>
@@ -8264,10 +8176,6 @@ This method overload uses the <xref:System.AppDomainSetup> information from the
           <AttributeName Language="C#">[System.Obsolete("AppDomain.SetDynamicBase has been deprecated and is not supported.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("AppDomain.SetDynamicBase has been deprecated and is not supported.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
           <AttributeName Language="C#">[System.Obsolete("AppDomain.SetDynamicBase has been deprecated. Please investigate the use of AppDomainSetup.DynamicBase instead. http://go.microsoft.com/fwlink/?linkid=14202")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("AppDomain.SetDynamicBase has been deprecated. Please investigate the use of AppDomainSetup.DynamicBase instead. http://go.microsoft.com/fwlink/?linkid=14202")&gt;]</AttributeName>
@@ -8514,10 +8422,6 @@ This method overload uses the <xref:System.AppDomainSetup> information from the
           <AttributeName Language="C#">[System.Obsolete("AppDomain.SetShadowCopyPath has been deprecated and is not supported.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("AppDomain.SetShadowCopyPath has been deprecated and is not supported.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0">
           <AttributeName Language="C#">[System.Obsolete("AppDomain.SetShadowCopyPath has been deprecated. Please investigate the use of AppDomainSetup.ShadowCopyDirectories instead. http://go.microsoft.com/fwlink/?linkid=14202")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("AppDomain.SetShadowCopyPath has been deprecated. Please investigate the use of AppDomainSetup.ShadowCopyDirectories instead. http://go.microsoft.com/fwlink/?linkid=14202")&gt;]</AttributeName>
@@ -9056,14 +8960,6 @@ This method overload uses the <xref:System.AppDomainSetup> information from the
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[add: System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;add: System.Security.SecurityCritical&gt;]</AttributeName>
@@ -9155,14 +9051,6 @@ This method overload uses the <xref:System.AppDomainSetup> information from the
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[add: System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;add: System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System/AppDomainSetup.xml b/xml/System/AppDomainSetup.xml
index 3cece475cb0..99f784abda6 100644
--- a/xml/System/AppDomainSetup.xml
+++ b/xml/System/AppDomainSetup.xml
@@ -50,10 +50,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
diff --git a/xml/System/AppDomainUnloadedException.xml b/xml/System/AppDomainUnloadedException.xml
index ffdf1a7b0e3..db865ba5993 100644
--- a/xml/System/AppDomainUnloadedException.xml
+++ b/xml/System/AppDomainUnloadedException.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -279,10 +275,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/ApplicationException.xml b/xml/System/ApplicationException.xml
index 190f39b09db..f006c3de913 100644
--- a/xml/System/ApplicationException.xml
+++ b/xml/System/ApplicationException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -232,10 +228,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/ApplicationId.xml b/xml/System/ApplicationId.xml
index 3ebc0ec7ed4..494ceb30f7f 100644
--- a/xml/System/ApplicationId.xml
+++ b/xml/System/ApplicationId.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -261,10 +257,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -327,12 +319,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -508,10 +494,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System/ArgIterator.xml b/xml/System/ArgIterator.xml
index 42ded2f4a1e..a5725249be6 100644
--- a/xml/System/ArgIterator.xml
+++ b/xml/System/ArgIterator.xml
@@ -246,12 +246,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/ArgumentException.xml b/xml/System/ArgumentException.xml
index 0b2fe960088..b96b6941d5a 100644
--- a/xml/System/ArgumentException.xml
+++ b/xml/System/ArgumentException.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -281,10 +277,6 @@ The following example demonstrates how to throw and catch an <xref:System.Argume
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -559,10 +551,6 @@ The following example demonstrates how to throw and catch an <xref:System.Argume
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -634,10 +622,6 @@ The following example demonstrates how to throw and catch an <xref:System.Argume
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System/ArgumentNullException.xml b/xml/System/ArgumentNullException.xml
index d3b3e827ebd..50b94d20d8c 100644
--- a/xml/System/ArgumentNullException.xml
+++ b/xml/System/ArgumentNullException.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -259,10 +255,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -470,10 +462,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System/ArgumentOutOfRangeException.xml b/xml/System/ArgumentOutOfRangeException.xml
index aa6cbe6e925..6415c8e876b 100644
--- a/xml/System/ArgumentOutOfRangeException.xml
+++ b/xml/System/ArgumentOutOfRangeException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -365,12 +361,6 @@ The following example defines a class to contain information about an invited gu
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="paramName" Type="System.String" />
       </Parameters>
@@ -496,12 +486,6 @@ The following example defines a class to contain information about an invited gu
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" Index="0" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.5;netstandard-1.6;netstandard-2.0;netstandard-2.1" />
         <Parameter Name="innerException" Type="System.Exception" Index="1" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.5;netstandard-1.6;netstandard-2.0;netstandard-2.1" />
@@ -549,12 +533,6 @@ The following example defines a class to contain information about an invited gu
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="paramName" Type="System.String" />
         <Parameter Name="message" Type="System.String" />
@@ -619,12 +597,6 @@ The following example defines a class to contain information about an invited gu
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="paramName" Type="System.String" />
         <Parameter Name="actualValue" Type="System.Object" />
@@ -699,10 +671,6 @@ The following example defines a class to contain information about an invited gu
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System/ArithmeticException.xml b/xml/System/ArithmeticException.xml
index e6e74f8a507..49b3205245f 100644
--- a/xml/System/ArithmeticException.xml
+++ b/xml/System/ArithmeticException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -262,10 +258,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/Array.xml b/xml/System/Array.xml
index 9b20b843014..03b78f94d58 100644
--- a/xml/System/Array.xml
+++ b/xml/System/Array.xml
@@ -82,10 +82,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -396,10 +392,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -621,10 +613,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -4888,10 +4876,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -5038,10 +5022,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -5184,10 +5164,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -5255,10 +5231,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -5326,10 +5298,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -5400,10 +5368,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -7198,10 +7162,6 @@ int[,,] TDArray = new int[1,1,1];
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -7634,10 +7594,6 @@ int[,,] TDArray = new int[1,1,1];
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -7811,10 +7767,6 @@ int[,,] TDArray = new int[1,1,1];
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -7984,10 +7936,6 @@ int[,,] TDArray = new int[1,1,1];
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -8065,10 +8013,6 @@ int[,,] TDArray = new int[1,1,1];
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -8146,10 +8090,6 @@ int[,,] TDArray = new int[1,1,1];
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -8229,10 +8169,6 @@ int[,,] TDArray = new int[1,1,1];
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -8657,10 +8593,6 @@ This method is an O(`n` log `n`) operation, where `n` is the <xref:System.Array.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.MayCorruptInstance, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.MayCorruptInstance, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -9173,10 +9105,6 @@ This method is an O(`n` log `n`) operation, where `n` is the <xref:System.Array.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.MayCorruptInstance, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.MayCorruptInstance, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -9939,10 +9867,6 @@ This method is an O(`n` log `n`) operation, where `n` is the <xref:System.Array.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.MayCorruptInstance, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.MayCorruptInstance, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -10079,10 +10003,6 @@ This method is an O(`n` log `n`) operation, where `n` is the <xref:System.Array.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.MayCorruptInstance, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.MayCorruptInstance, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -10234,10 +10154,6 @@ This method is an O(`n` log `n`) operation, where `n` is the <xref:System.Array.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.MayCorruptInstance, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.MayCorruptInstance, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -10389,10 +10305,6 @@ This method is an O(`n` log `n`) operation, where `n` is the <xref:System.Array.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.MayCorruptInstance, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.MayCorruptInstance, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
diff --git a/xml/System/ArraySegment`1+Enumerator.xml b/xml/System/ArraySegment`1+Enumerator.xml
index d04aa18ee87..cc104f88806 100644
--- a/xml/System/ArraySegment`1+Enumerator.xml
+++ b/xml/System/ArraySegment`1+Enumerator.xml
@@ -51,12 +51,6 @@
       <InterfaceName>System.IDisposable</InterfaceName>
     </Interface>
   </Interfaces>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Provides an enumerator for the elements of an <see cref="T:System.ArraySegment`1" />.</summary>
     <remarks>
@@ -107,10 +101,6 @@ If <xref:System.ArraySegment%601.Enumerator.MoveNext%2A> passes the end of the <
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
diff --git a/xml/System/ArraySegment`1.xml b/xml/System/ArraySegment`1.xml
index 13e53cbc147..ef837881132 100644
--- a/xml/System/ArraySegment`1.xml
+++ b/xml/System/ArraySegment`1.xml
@@ -91,10 +91,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -725,12 +721,6 @@ The underlying array of <paramref name="destination" /> is <see langword="null"
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/ArrayTypeMismatchException.xml b/xml/System/ArrayTypeMismatchException.xml
index d5a6a86b312..cc566fe7602 100644
--- a/xml/System/ArrayTypeMismatchException.xml
+++ b/xml/System/ArrayTypeMismatchException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -292,10 +288,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/AssemblyLoadEventArgs.xml b/xml/System/AssemblyLoadEventArgs.xml
index 5b897ea007c..57f8c0829c8 100644
--- a/xml/System/AssemblyLoadEventArgs.xml
+++ b/xml/System/AssemblyLoadEventArgs.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System/Attribute.xml b/xml/System/Attribute.xml
index 96681b0da42..e42ecc01253 100644
--- a/xml/System/Attribute.xml
+++ b/xml/System/Attribute.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -207,10 +203,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2678,12 +2670,6 @@ When implementing your own class derived from <xref:System.Attribute>, you can o
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/BadImageFormatException.xml b/xml/System/BadImageFormatException.xml
index 777bb3dadde..0facaa286de 100644
--- a/xml/System/BadImageFormatException.xml
+++ b/xml/System/BadImageFormatException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -297,10 +293,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -651,10 +643,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -715,10 +703,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -774,10 +758,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/BinaryData.xml b/xml/System/BinaryData.xml
index f743388761f..dd48f95f05d 100644
--- a/xml/System/BinaryData.xml
+++ b/xml/System/BinaryData.xml
@@ -27,10 +27,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>A lightweight abstraction for a payload of bytes that supports converting between string, stream, JSON, and bytes.</summary>
@@ -72,12 +68,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="data" Type="System.ReadOnlyMemory&lt;System.Byte&gt;" />
       </Parameters>
@@ -153,12 +143,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="data" Type="System.ReadOnlyMemory&lt;System.Byte&gt;" />
         <Parameter Name="mediaType" Type="System.String">
@@ -229,10 +213,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="jsonSerializable" Type="System.Object" />
@@ -259,12 +239,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="jsonSerializable" Type="System.Object" />
         <Parameter Name="context" Type="System.Text.Json.Serialization.JsonSerializerContext">
@@ -325,10 +299,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -390,12 +360,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.BinaryData</ReturnType>
       </ReturnValue>
@@ -457,12 +421,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.BinaryData</ReturnType>
       </ReturnValue>
@@ -859,10 +817,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -886,12 +840,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlyMemory&lt;System.Byte&gt;</ReturnType>
       </ReturnValue>
@@ -925,12 +873,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlySpan&lt;System.Byte&gt;</ReturnType>
       </ReturnValue>
@@ -987,12 +929,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlyMemory&lt;System.Byte&gt;</ReturnType>
       </ReturnValue>
@@ -1024,10 +960,6 @@
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.RequiresDynamicCode("JSON serialization and deserialization might require types that cannot be statically analyzed and might need runtime code generation.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
@@ -1059,12 +991,6 @@
         <AssemblyVersion>8.0.0.1</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>T</ReturnType>
       </ReturnValue>
diff --git a/xml/System/BitConverter.xml b/xml/System/BitConverter.xml
index fc75288a142..e575417bdab 100644
--- a/xml/System/BitConverter.xml
+++ b/xml/System/BitConverter.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Converts base data types to an array of bytes, and an array of bytes to base data types.</summary>
@@ -1479,12 +1475,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1600,12 +1590,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Char</ReturnType>
       </ReturnValue>
@@ -1722,12 +1706,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Double</ReturnType>
       </ReturnValue>
@@ -1846,12 +1824,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Half</ReturnType>
       </ReturnValue>
@@ -1932,12 +1904,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int128</ReturnType>
       </ReturnValue>
@@ -2023,12 +1989,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int16</ReturnType>
       </ReturnValue>
@@ -2151,12 +2111,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2278,12 +2232,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
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@@ -2406,12 +2354,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Single</ReturnType>
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@@ -2760,10 +2702,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt128</ReturnType>
@@ -2861,10 +2799,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt16</ReturnType>
@@ -2993,10 +2927,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt32</ReturnType>
@@ -3125,10 +3055,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.UInt64</ReturnType>
@@ -3252,12 +3178,6 @@
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       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3302,12 +3222,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3352,12 +3266,6 @@
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       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3398,12 +3306,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3441,12 +3343,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3491,12 +3387,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3541,12 +3431,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3591,12 +3475,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3641,12 +3519,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3689,10 +3561,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -3743,10 +3611,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -3797,10 +3661,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -3851,10 +3711,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
diff --git a/xml/System/Boolean.xml b/xml/System/Boolean.xml
index 6f5e54a40ef..fa6a71ea6f8 100644
--- a/xml/System/Boolean.xml
+++ b/xml/System/Boolean.xml
@@ -244,12 +244,6 @@ The following code example demonstrates generic and nongeneric versions of the <
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -409,12 +403,6 @@ This method implements the <xref:System.IEquatable%601?displayProperty=nameWithT
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -679,12 +667,6 @@ The <xref:System.Boolean> class implements `true` as the integer, one, and `fals
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1939,12 +1921,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -2009,12 +1985,6 @@ The following example illustrates the <xref:System.Boolean.ToString%2A> method.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -2224,12 +2194,6 @@ The <xref:System.Boolean.TrueString> property defines the string representation
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Buffer.xml b/xml/System/Buffer.xml
index 6d8e7f42770..5e48519063d 100644
--- a/xml/System/Buffer.xml
+++ b/xml/System/Buffer.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -400,10 +396,6 @@
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -473,10 +465,6 @@
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
diff --git a/xml/System/Byte.xml b/xml/System/Byte.xml
index e223eccd6fb..d2f184923a3 100644
--- a/xml/System/Byte.xml
+++ b/xml/System/Byte.xml
@@ -446,12 +446,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -530,12 +524,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte</ReturnType>
       </ReturnValue>
@@ -587,12 +575,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte</ReturnType>
       </ReturnValue>
@@ -644,12 +626,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte</ReturnType>
       </ReturnValue>
@@ -844,12 +820,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1443,12 +1413,6 @@ For <xref:System.Numerics.IFloatingPoint%601>, this method matches the IEEE 754:
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte</ReturnType>
       </ReturnValue>
@@ -1632,12 +1596,6 @@ For <xref:System.Numerics.IFloatingPoint%601>, this method matches the IEEE 754:
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte</ReturnType>
       </ReturnValue>
@@ -1775,12 +1733,6 @@ For <xref:System.Numerics.IFloatingPoint%601>, this method matches the IEEE 754:
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte</ReturnType>
       </ReturnValue>
@@ -1986,12 +1938,6 @@ For <xref:System.Numerics.IFloatingPoint%601>, this method matches the IEEE 754:
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte</ReturnType>
       </ReturnValue>
@@ -5987,10 +5933,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6073,10 +6015,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6176,10 +6114,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6277,10 +6211,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6639,12 +6569,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6820,12 +6744,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6989,12 +6907,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/CannotUnloadAppDomainException.xml b/xml/System/CannotUnloadAppDomainException.xml
index 7b6668aee19..0d2bf501c4f 100644
--- a/xml/System/CannotUnloadAppDomainException.xml
+++ b/xml/System/CannotUnloadAppDomainException.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -257,10 +253,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/Char.xml b/xml/System/Char.xml
index bf56a05bfe3..7d81427691a 100644
--- a/xml/System/Char.xml
+++ b/xml/System/Char.xml
@@ -413,12 +413,6 @@ The following code example demonstrates some of the methods in <xref:System.Char
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -513,12 +507,6 @@ The following code example demonstrates some of the methods in <xref:System.Char
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -679,12 +667,6 @@ The following code example demonstrates some of the methods in <xref:System.Char
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -823,12 +805,6 @@ The following code example demonstrates some of the methods in <xref:System.Char
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1036,10 +1012,6 @@ The following code example demonstrates some of the methods in <xref:System.Char
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1256,10 +1228,6 @@ The following code example demonstrates some of the methods in <xref:System.Char
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1846,10 +1814,6 @@ The method does not validate that `maxInclusive` is greater than or equal
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2013,10 +1977,6 @@ The method does not validate that `maxInclusive` is greater than or equal
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2171,12 +2131,6 @@ The method does not validate that `maxInclusive` is greater than or equal
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2350,10 +2304,6 @@ The following code example demonstrates <xref:System.Char.IsLetter%2A>.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2527,10 +2477,6 @@ The following code example demonstrates <xref:System.Char.IsLetter%2A>.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2688,10 +2634,6 @@ The following code example demonstrates <xref:System.Char.IsLetter%2A>.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2845,12 +2787,6 @@ The following code example demonstrates <xref:System.Char.IsLetter%2A>.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3010,10 +2946,6 @@ The following code example demonstrates <xref:System.Char.IsLetter%2A>.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -3248,10 +3180,6 @@ The following code example demonstrates <xref:System.Char.IsLetter%2A>.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -3457,10 +3385,6 @@ The following code example demonstrates <xref:System.Char.IsLetter%2A>.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -3637,12 +3561,6 @@ The following code example demonstrates <xref:System.Char.IsLetter%2A>.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3796,12 +3714,6 @@ The following code example demonstrates <xref:System.Char.IsLetter%2A>.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3990,10 +3902,6 @@ The following code example demonstrates <xref:System.Char.IsLetter%2A>.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -4157,10 +4065,6 @@ The following code example demonstrates <xref:System.Char.IsLetter%2A>.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -4342,10 +4246,6 @@ The following code example demonstrates <xref:System.Char.IsLetter%2A>.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -4526,12 +4426,6 @@ The following code example demonstrates <xref:System.Char.IsLetter%2A>.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Char</ReturnType>
       </ReturnValue>
@@ -9049,10 +8943,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -9215,10 +9105,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -9275,12 +9161,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -9335,12 +9215,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -9488,10 +9362,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -9636,12 +9506,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/CharEnumerator.xml b/xml/System/CharEnumerator.xml
index 3c34ca0d919..e936d17ac17 100644
--- a/xml/System/CharEnumerator.xml
+++ b/xml/System/CharEnumerator.xml
@@ -151,10 +151,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/Console.xml b/xml/System/Console.xml
index d6fed8e311d..24a747eba6e 100644
--- a/xml/System/Console.xml
+++ b/xml/System/Console.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the standard input, output, and error streams for console applications. This class cannot be inherited.</summary>
@@ -570,14 +566,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[add: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;add: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[remove: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;remove: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[add: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;add: System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1322,10 +1310,6 @@
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("tvos")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("tvos")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.ValueTuple&lt;System.Int32,System.Int32&gt;</ReturnType>
@@ -3011,10 +2995,6 @@ This method can be used to reacquire the standard output stream after it has bee
           <AttributeName Language="C#">[System.Runtime.Versioning.UnsupportedOSPlatform("android")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.UnsupportedOSPlatform("android")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -4524,12 +4504,6 @@ This method can be used to reacquire the standard output stream after it has bee
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4839,12 +4813,6 @@ This method can be used to reacquire the standard output stream after it has bee
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4976,12 +4944,6 @@ This method can be used to reacquire the standard output stream after it has bee
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5535,12 +5497,6 @@ This method can be used to reacquire the standard output stream after it has bee
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5650,12 +5606,6 @@ This method can be used to reacquire the standard output stream after it has bee
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -6076,12 +6026,6 @@ This method can be used to reacquire the standard output stream after it has bee
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -6402,12 +6346,6 @@ This method can be used to reacquire the standard output stream after it has bee
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -6542,12 +6480,6 @@ This method can be used to reacquire the standard output stream after it has bee
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -7106,12 +7038,6 @@ This method can be used to reacquire the standard output stream after it has bee
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -7222,12 +7148,6 @@ This method can be used to reacquire the standard output stream after it has bee
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System/ConsoleKeyInfo.xml b/xml/System/ConsoleKeyInfo.xml
index db5f023dfdb..1c496e478eb 100644
--- a/xml/System/ConsoleKeyInfo.xml
+++ b/xml/System/ConsoleKeyInfo.xml
@@ -247,12 +247,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/ContextMarshalException.xml b/xml/System/ContextMarshalException.xml
index 4678b4d2ed6..41aa5046af7 100644
--- a/xml/System/ContextMarshalException.xml
+++ b/xml/System/ContextMarshalException.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -250,10 +246,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/Convert.xml b/xml/System/Convert.xml
index 050da24eb84..10671804c1f 100644
--- a/xml/System/Convert.xml
+++ b/xml/System/Convert.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Converts a base data type to another base data type.</summary>
@@ -630,10 +626,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -742,10 +734,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -827,12 +815,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -873,12 +855,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -917,12 +893,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Buffers.OperationStatus</ReturnType>
       </ReturnValue>
@@ -963,12 +933,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Buffers.OperationStatus</ReturnType>
       </ReturnValue>
@@ -1177,12 +1141,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1276,10 +1234,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -1408,12 +1362,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1494,10 +1442,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -1577,12 +1521,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1638,12 +1576,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1719,10 +1651,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
@@ -5063,12 +4991,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Char</ReturnType>
       </ReturnValue>
@@ -5428,12 +5350,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Char</ReturnType>
       </ReturnValue>
@@ -8915,12 +8831,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -8963,12 +8873,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -9009,12 +8913,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -9062,12 +8960,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -9106,12 +8998,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
         <Attributes>
@@ -9154,12 +9040,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -14333,10 +14213,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.SByte</ReturnType>
@@ -15713,12 +15589,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
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@@ -15786,12 +15656,6 @@
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@@ -15859,12 +15723,6 @@
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@@ -15932,12 +15790,6 @@
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@@ -16004,12 +15856,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.String</ReturnType>
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@@ -16077,12 +15923,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
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@@ -16150,12 +15990,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
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-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
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@@ -16222,12 +16056,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
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@@ -16292,12 +16120,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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-      </Attributes>
       <ReturnValue>
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@@ -16436,10 +16258,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
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       <ReturnValue>
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@@ -16507,12 +16325,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -16650,10 +16462,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -16726,10 +16534,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -16802,10 +16606,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -16874,12 +16674,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
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       <ReturnValue>
         <ReturnType>System.String</ReturnType>
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@@ -16957,12 +16751,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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-      <Attributes>
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-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -17039,10 +16827,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
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       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -17120,12 +16904,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -17203,12 +16981,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -17285,12 +17057,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
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@@ -17367,12 +17133,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
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       <ReturnValue>
         <ReturnType>System.String</ReturnType>
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@@ -17449,12 +17209,6 @@
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         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -17531,10 +17285,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -17612,12 +17362,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -17694,10 +17438,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -17775,12 +17515,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -17857,10 +17591,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -18020,10 +17750,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -18101,12 +17827,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -18257,10 +17977,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -18343,10 +18059,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -18429,10 +18141,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -22686,12 +22394,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -22738,12 +22440,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -22798,12 +22494,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -22847,12 +22537,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -22892,12 +22576,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/DBNull.xml b/xml/System/DBNull.xml
index d86fcbff77b..7171a315c52 100644
--- a/xml/System/DBNull.xml
+++ b/xml/System/DBNull.xml
@@ -71,10 +71,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System/DataMisalignedException.xml b/xml/System/DataMisalignedException.xml
index 065b0b3a77e..9e50714c3a0 100644
--- a/xml/System/DataMisalignedException.xml
+++ b/xml/System/DataMisalignedException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System/DateOnly.xml b/xml/System/DateOnly.xml
index 5b1ccdab80a..5593343b44d 100644
--- a/xml/System/DateOnly.xml
+++ b/xml/System/DateOnly.xml
@@ -108,12 +108,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="year" Type="System.Int32" />
         <Parameter Name="month" Type="System.Int32" />
@@ -265,12 +259,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -462,12 +450,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -843,12 +825,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DateOnly</ReturnType>
       </ReturnValue>
@@ -923,12 +899,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DateOnly</ReturnType>
       </ReturnValue>
@@ -1006,12 +976,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DateOnly</ReturnType>
       </ReturnValue>
@@ -1099,12 +1063,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DateOnly</ReturnType>
       </ReturnValue>
@@ -1155,12 +1113,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DateOnly</ReturnType>
       </ReturnValue>
@@ -1304,12 +1256,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DateOnly</ReturnType>
       </ReturnValue>
@@ -1362,12 +1308,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DateOnly</ReturnType>
       </ReturnValue>
@@ -1487,12 +1427,6 @@ The <xref:System.DateTime.Kind> property of the resulting <xref:System.DateTime>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1518,12 +1452,6 @@ The <xref:System.DateTime.Kind> property of the resulting <xref:System.DateTime>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1549,12 +1477,6 @@ The <xref:System.DateTime.Kind> property of the resulting <xref:System.DateTime>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1581,12 +1503,6 @@ The <xref:System.DateTime.Kind> property of the resulting <xref:System.DateTime>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1622,12 +1538,6 @@ The <xref:System.DateTime.Kind> property of the resulting <xref:System.DateTime>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1670,12 +1580,6 @@ The <xref:System.DateTime.Kind> property of the resulting <xref:System.DateTime>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1845,12 +1749,6 @@ The <xref:System.DateTime.Kind> property of the resulting <xref:System.DateTime>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1928,12 +1826,6 @@ The <xref:System.DateTime.Kind> property of the resulting <xref:System.DateTime>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2017,12 +1909,6 @@ The <xref:System.DateTime.Kind> property of the resulting <xref:System.DateTime>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2154,12 +2040,6 @@ The <xref:System.DateTime.Kind> property of the resulting <xref:System.DateTime>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2212,12 +2092,6 @@ The <xref:System.DateTime.Kind> property of the resulting <xref:System.DateTime>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2321,12 +2195,6 @@ The <xref:System.DateTime.Kind> property of the resulting <xref:System.DateTime>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2382,12 +2250,6 @@ The <xref:System.DateTime.Kind> property of the resulting <xref:System.DateTime>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2444,12 +2306,6 @@ The <xref:System.DateTime.Kind> property of the resulting <xref:System.DateTime>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/DateTime.xml b/xml/System/DateTime.xml
index 862ea1b696e..42c92175be8 100644
--- a/xml/System/DateTime.xml
+++ b/xml/System/DateTime.xml
@@ -122,10 +122,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -2491,12 +2487,6 @@ The value parameter is rounded to the nearest integer.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -3099,12 +3089,6 @@ The value parameter is rounded to the nearest integer.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5794,12 +5778,6 @@ It handles the <xref:System.FormatException> exception that is thrown when the m
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DateTime</ReturnType>
       </ReturnValue>
@@ -5944,12 +5922,6 @@ The following example parses an array of date strings by using the conventions o
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DateTime</ReturnType>
       </ReturnValue>
@@ -6247,12 +6219,6 @@ The following example demonstrates the <xref:System.DateTime.Parse%28System.Stri
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DateTime</ReturnType>
       </ReturnValue>
@@ -6311,12 +6277,6 @@ The following example demonstrates the <xref:System.DateTime.Parse%28System.Stri
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DateTime</ReturnType>
       </ReturnValue>
@@ -9104,10 +9064,6 @@ The following example illustrates how the string representation of a <xref:Syste
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -9307,12 +9263,6 @@ The following example illustrates how the string representation of a <xref:Syste
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -9378,12 +9328,6 @@ The following example illustrates how the string representation of a <xref:Syste
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -9464,12 +9408,6 @@ The following example illustrates how the string representation of a <xref:Syste
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -9522,10 +9460,6 @@ The following example illustrates how the string representation of a <xref:Syste
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -9610,12 +9544,6 @@ The following example illustrates how the string representation of a <xref:Syste
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -9662,12 +9590,6 @@ The following example illustrates how the string representation of a <xref:Syste
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -9720,12 +9642,6 @@ The following example illustrates how the string representation of a <xref:Syste
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -9789,10 +9705,6 @@ The following example illustrates how the string representation of a <xref:Syste
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -9898,12 +9810,6 @@ The following example illustrates the <xref:System.DateTime.TryParse%28System.St
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -9966,12 +9872,6 @@ The following example illustrates the <xref:System.DateTime.TryParse%28System.St
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -10047,12 +9947,6 @@ The following example illustrates the <xref:System.DateTime.TryParse%28System.St
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -10195,12 +10089,6 @@ The following example illustrates the <xref:System.DateTime.TryParse%28System.St
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/DateTimeOffset.xml b/xml/System/DateTimeOffset.xml
index 21d4d1811ac..202ebfd5b7a 100644
--- a/xml/System/DateTimeOffset.xml
+++ b/xml/System/DateTimeOffset.xml
@@ -686,12 +686,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="year" Type="System.Int32" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
         <Parameter Name="month" Type="System.Int32" Index="1" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
@@ -883,12 +877,6 @@ This constructor interprets `year`, `month` and `day` as a year, month and day
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="year" Type="System.Int32" Index="0" FrameworkAlternate="net-7.0;net-8.0;net-9.0" />
         <Parameter Name="month" Type="System.Int32" Index="1" FrameworkAlternate="net-7.0;net-8.0;net-9.0" />
@@ -2335,12 +2323,6 @@ In .NET 6 and earlier versions, the `seconds` parameter is rounded to the neares
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4184,10 +4166,6 @@ If you rely on properties such as <xref:System.DateTimeOffset.Now> or <xref:Syst
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -4328,12 +4306,6 @@ If you rely on properties such as <xref:System.DateTimeOffset.Now> or <xref:Syst
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DateTimeOffset</ReturnType>
       </ReturnValue>
@@ -4486,10 +4458,6 @@ If you rely on properties such as <xref:System.DateTimeOffset.Now> or <xref:Syst
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -4647,12 +4615,6 @@ If you rely on properties such as <xref:System.DateTimeOffset.Now> or <xref:Syst
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DateTimeOffset</ReturnType>
       </ReturnValue>
@@ -4984,12 +4946,6 @@ The hour component and the AM/PM designator in <paramref name="input" /> do not
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DateTimeOffset</ReturnType>
       </ReturnValue>
@@ -5148,12 +5104,6 @@ Strings that do not specify a UTC offset are assumed to have the offset of the l
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.DateTimeOffset</ReturnType>
       </ReturnValue>
@@ -6033,10 +5983,6 @@ Me.ToUtcDateTime().ToFileTime()
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6114,10 +6060,6 @@ Me.ToUtcDateTime().ToFileTime()
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6211,10 +6153,6 @@ Me.ToUtcDateTime().ToFileTime()
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6327,10 +6265,6 @@ Me.ToUtcDateTime().ToFileTime()
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6830,10 +6764,6 @@ Me.ToUtcDateTime().ToFileTime()
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6957,12 +6887,6 @@ Me.ToUtcDateTime().ToFileTime()
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7078,10 +7002,6 @@ Me.ToUtcDateTime().ToFileTime()
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -7323,12 +7243,6 @@ The particular date and time symbols and strings used in `input` are defined by
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7447,12 +7361,6 @@ This method parses the string representation of a date that matches any one of t
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7595,12 +7503,6 @@ Strings that do not specify a UTC offset are assumed to have the offset of the l
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Decimal.xml b/xml/System/Decimal.xml
index f6aad1dd3b2..8e2d0dcb6f5 100644
--- a/xml/System/Decimal.xml
+++ b/xml/System/Decimal.xml
@@ -456,12 +456,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="bits" Type="System.Int32[]" />
       </Parameters>
@@ -1332,10 +1326,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1416,12 +1406,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TInteger</ReturnType>
       </ReturnValue>
@@ -1471,12 +1455,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TInteger</ReturnType>
       </ReturnValue>
@@ -1567,12 +1545,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Decimal</ReturnType>
       </ReturnValue>
@@ -1624,12 +1596,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Decimal</ReturnType>
       </ReturnValue>
@@ -1681,12 +1647,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Decimal</ReturnType>
       </ReturnValue>
@@ -1918,10 +1878,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2214,12 +2170,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32[]</ReturnType>
       </ReturnValue>
@@ -5985,12 +5935,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601>, this method matches the IE
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Decimal</ReturnType>
       </ReturnValue>
@@ -6178,12 +6122,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601>, this method matches the IE
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Decimal</ReturnType>
       </ReturnValue>
@@ -6319,12 +6257,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601>, this method matches the IE
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Decimal</ReturnType>
       </ReturnValue>
@@ -6532,12 +6464,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601>, this method matches the IE
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Decimal</ReturnType>
       </ReturnValue>
@@ -10383,10 +10309,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -10482,10 +10404,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -10583,10 +10501,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -10695,10 +10609,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -11366,10 +11276,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -11553,12 +11459,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -11723,10 +11623,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/Delegate.xml b/xml/System/Delegate.xml
index 71e657eb245..0821d66c7cc 100644
--- a/xml/System/Delegate.xml
+++ b/xml/System/Delegate.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDual)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDual)&gt;]</AttributeName>
@@ -413,10 +409,6 @@ For examples, see [Supplemental API remarks for System.Delegate.CreateDelegate](
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -477,12 +469,6 @@ For examples, see [Supplemental API remarks for System.Delegate.CreateDelegate](
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Delegate</ReturnType>
       </ReturnValue>
@@ -549,10 +535,6 @@ For examples, see [Supplemental API remarks for System.Delegate.CreateDelegate](
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -1693,10 +1675,6 @@ For more information and examples, see [Supplemental API remarks for System.Dele
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1780,10 +1758,6 @@ The number, order, or type of parameters listed in <paramref name="args" /> is i
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1845,12 +1819,6 @@ The number, order, or type of parameters listed in <paramref name="args" /> is i
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Delegate+InvocationListEnumerator&lt;TDelegate&gt;</ReturnType>
         <Attributes>
@@ -1922,10 +1890,6 @@ The number, order, or type of parameters listed in <paramref name="args" /> is i
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2324,10 +2288,6 @@ The number, order, or type of parameters listed in <paramref name="args" /> is i
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -2405,12 +2365,6 @@ The number, order, or type of parameters listed in <paramref name="args" /> is i
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2484,10 +2438,6 @@ The number, order, or type of parameters listed in <paramref name="args" /> is i
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2556,12 +2506,6 @@ The number, order, or type of parameters listed in <paramref name="args" /> is i
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Delegate</ReturnType>
       </ReturnValue>
@@ -2685,10 +2629,6 @@ The number, order, or type of parameters listed in <paramref name="args" /> is i
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System/DivideByZeroException.xml b/xml/System/DivideByZeroException.xml
index 4ce54335fe7..f92490b7e01 100644
--- a/xml/System/DivideByZeroException.xml
+++ b/xml/System/DivideByZeroException.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -275,10 +271,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/DllNotFoundException.xml b/xml/System/DllNotFoundException.xml
index 2f569fe4a5b..4ee76ee02a8 100644
--- a/xml/System/DllNotFoundException.xml
+++ b/xml/System/DllNotFoundException.xml
@@ -52,10 +52,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -250,10 +246,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/Double.xml b/xml/System/Double.xml
index 4648e9456c0..f6fa9a0892a 100644
--- a/xml/System/Double.xml
+++ b/xml/System/Double.xml
@@ -1141,12 +1141,6 @@ The following code example demonstrates generic and nongeneric versions of the <
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1207,12 +1201,6 @@ The following code example illustrates the use of `CompareTo` in the context of
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TInteger</ReturnType>
       </ReturnValue>
@@ -1262,12 +1250,6 @@ The following code example illustrates the use of `CompareTo` in the context of
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TInteger</ReturnType>
       </ReturnValue>
@@ -1487,12 +1469,6 @@ This computes `cos(x * π)`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Double</ReturnType>
       </ReturnValue>
@@ -1544,12 +1520,6 @@ This computes `cos(x * π)`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Double</ReturnType>
       </ReturnValue>
@@ -1601,12 +1571,6 @@ This computes `cos(x * π)`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Double</ReturnType>
       </ReturnValue>
@@ -1861,12 +1825,6 @@ Euler's number is approximately 2.7182818284590452354.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4654,12 +4612,6 @@ The following code example illustrates the use of <xref:System.Double.NegativeIn
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Double</ReturnType>
       </ReturnValue>
@@ -4856,12 +4808,6 @@ If a separator is encountered in the `s` parameter during a parse operation, and
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Double</ReturnType>
       </ReturnValue>
@@ -5006,12 +4952,6 @@ If a separator is encountered in the `s` parameter during a parse operation, and
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Double</ReturnType>
       </ReturnValue>
@@ -5244,12 +5184,6 @@ If `s` is out of range of the <xref:System.Double> data type, the method returns
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Double</ReturnType>
       </ReturnValue>
@@ -9084,10 +9018,6 @@ Tau is approximately 6.2831853071795864769.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -9200,10 +9130,6 @@ Tau is approximately 6.2831853071795864769.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -9325,10 +9251,6 @@ Tau is approximately 6.2831853071795864769.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -9453,10 +9375,6 @@ Tau is approximately 6.2831853071795864769.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -9829,10 +9747,6 @@ Tau is approximately 6.2831853071795864769.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -10028,12 +9942,6 @@ If a separator is encountered in the `s` parameter during a parse operation, and
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -10199,10 +10107,6 @@ If a separator is encountered in the `s` parameter during a parse operation, and
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/DuplicateWaitObjectException.xml b/xml/System/DuplicateWaitObjectException.xml
index 617dd8e9995..9aea3c3ace0 100644
--- a/xml/System/DuplicateWaitObjectException.xml
+++ b/xml/System/DuplicateWaitObjectException.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -243,10 +239,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/EntryPointNotFoundException.xml b/xml/System/EntryPointNotFoundException.xml
index 0e6e2344d86..388df0dfec1 100644
--- a/xml/System/EntryPointNotFoundException.xml
+++ b/xml/System/EntryPointNotFoundException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -281,10 +277,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/Enum.xml b/xml/System/Enum.xml
index adf161f0db8..918758454a5 100644
--- a/xml/System/Enum.xml
+++ b/xml/System/Enum.xml
@@ -76,10 +76,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -177,10 +173,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -270,10 +262,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -587,12 +575,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -999,12 +981,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TEnum[]</ReturnType>
       </ReturnValue>
@@ -1334,12 +1310,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1699,12 +1669,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TEnum</ReturnType>
       </ReturnValue>
@@ -1760,12 +1724,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TEnum</ReturnType>
       </ReturnValue>
@@ -1824,12 +1782,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TEnum</ReturnType>
       </ReturnValue>
@@ -1888,12 +1840,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TEnum</ReturnType>
       </ReturnValue>
@@ -3946,10 +3892,6 @@
           <AttributeName Language="C#">[System.Obsolete("The provider argument is not used. Use ToString(String) instead.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("The provider argument is not used. Use ToString(String) instead.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -4007,12 +3949,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4082,12 +4018,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4152,12 +4082,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4212,12 +4136,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4285,12 +4203,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4348,12 +4260,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4418,10 +4324,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -4510,12 +4412,6 @@ If the parse operation fails, the `result` parameter contains the default value
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4583,10 +4479,6 @@ If the parse operation fails, the `result` parameter contains the default value
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/Environment+ProcessCpuUsage.xml b/xml/System/Environment+ProcessCpuUsage.xml
index 209a8fc87dc..1dd56f5d86f 100644
--- a/xml/System/Environment+ProcessCpuUsage.xml
+++ b/xml/System/Environment+ProcessCpuUsage.xml
@@ -22,10 +22,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
     </Attribute>
-    <Attribute>
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents the CPU usage statistics of a process.</summary>
diff --git a/xml/System/Environment+SpecialFolder.xml b/xml/System/Environment+SpecialFolder.xml
index 77c9c448817..2860ec26358 100644
--- a/xml/System/Environment+SpecialFolder.xml
+++ b/xml/System/Environment+SpecialFolder.xml
@@ -48,10 +48,6 @@
     <BaseTypeName>System.Enum</BaseTypeName>
   </Base>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System/Environment+SpecialFolderOption.xml b/xml/System/Environment+SpecialFolderOption.xml
index b27b84c340b..5c49cb619a4 100644
--- a/xml/System/Environment+SpecialFolderOption.xml
+++ b/xml/System/Environment+SpecialFolderOption.xml
@@ -45,12 +45,6 @@
   <Base>
     <BaseTypeName>System.Enum</BaseTypeName>
   </Base>
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <summary>Specifies options to use for getting the path to a special folder.</summary>
     <remarks>
diff --git a/xml/System/Environment.xml b/xml/System/Environment.xml
index 18bd3bda93f..180ce9c48b1 100644
--- a/xml/System/Environment.xml
+++ b/xml/System/Environment.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -656,10 +652,6 @@ Invalid argument
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DoesNotReturn]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DoesNotReturn&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -740,10 +732,6 @@ Calling the `Environment.FailFast` method to terminate execution of an applicati
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DoesNotReturn]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DoesNotReturn&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1965,10 +1953,6 @@ For more information about processor groups and logical processors, see [Process
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
diff --git a/xml/System/Exception.xml b/xml/System/Exception.xml
index bedb1059b5b..5e429a3f5ee 100644
--- a/xml/System/Exception.xml
+++ b/xml/System/Exception.xml
@@ -68,10 +68,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDual)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDual)&gt;]</AttributeName>
@@ -287,10 +283,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -440,10 +432,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[get: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -507,12 +495,6 @@ The following example demonstrates how to add and retrieve information using the
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Exception</ReturnType>
       </ReturnValue>
@@ -591,10 +573,6 @@ The following example demonstrates how to add and retrieve information using the
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -669,12 +647,6 @@ The following example demonstrates how to add and retrieve information using the
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
       </ReturnValue>
@@ -947,10 +919,6 @@ The following example demonstrates how to add and retrieve information using the
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[get: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1325,10 +1293,6 @@ The following code example throws and then catches an <xref:System.Exception> ex
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/ExecutionEngineException.xml b/xml/System/ExecutionEngineException.xml
index d8eb111728e..b3420056b1b 100644
--- a/xml/System/ExecutionEngineException.xml
+++ b/xml/System/ExecutionEngineException.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System/FakeLoggerServiceProviderExtensions.xml b/xml/System/FakeLoggerServiceProviderExtensions.xml
index 182b7f3a75c..1f0d3eec9c8 100644
--- a/xml/System/FakeLoggerServiceProviderExtensions.xml
+++ b/xml/System/FakeLoggerServiceProviderExtensions.xml
@@ -41,12 +41,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Logging.Testing.FakeLogCollector</ReturnType>
       </ReturnValue>
diff --git a/xml/System/FakeRedactionServiceProviderExtensions.xml b/xml/System/FakeRedactionServiceProviderExtensions.xml
index 70232dc3729..c42b08b5b29 100644
--- a/xml/System/FakeRedactionServiceProviderExtensions.xml
+++ b/xml/System/FakeRedactionServiceProviderExtensions.xml
@@ -41,12 +41,6 @@
         <AssemblyVersion>8.10.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>Microsoft.Extensions.Compliance.Testing.FakeRedactionCollector</ReturnType>
       </ReturnValue>
diff --git a/xml/System/FieldAccessException.xml b/xml/System/FieldAccessException.xml
index 560d060d4c4..d20620489fe 100644
--- a/xml/System/FieldAccessException.xml
+++ b/xml/System/FieldAccessException.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -243,10 +239,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/FormatException.xml b/xml/System/FormatException.xml
index b1df5acf394..8187077855e 100644
--- a/xml/System/FormatException.xml
+++ b/xml/System/FormatException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -350,10 +346,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/FormattableString.xml b/xml/System/FormattableString.xml
index 0203f3bb575..c4607247c16 100644
--- a/xml/System/FormattableString.xml
+++ b/xml/System/FormattableString.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a composite format string, along with the arguments to be formatted.</summary>
@@ -308,12 +304,6 @@ Within the scope of that import directive, an interpolated string may be formatt
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Func`10.xml b/xml/System/Func`10.xml
index 8a3da53f03a..8eec3070e40 100644
--- a/xml/System/Func`10.xml
+++ b/xml/System/Func`10.xml
@@ -99,10 +99,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Func`11.xml b/xml/System/Func`11.xml
index 794b8f8e829..81305bc1587 100644
--- a/xml/System/Func`11.xml
+++ b/xml/System/Func`11.xml
@@ -104,10 +104,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Func`12.xml b/xml/System/Func`12.xml
index c554bb49b11..5a75e351989 100644
--- a/xml/System/Func`12.xml
+++ b/xml/System/Func`12.xml
@@ -109,10 +109,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Func`13.xml b/xml/System/Func`13.xml
index d7d13d2e691..cb9aea3e306 100644
--- a/xml/System/Func`13.xml
+++ b/xml/System/Func`13.xml
@@ -114,10 +114,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Func`14.xml b/xml/System/Func`14.xml
index 020328db607..178ebae08f2 100644
--- a/xml/System/Func`14.xml
+++ b/xml/System/Func`14.xml
@@ -119,10 +119,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Func`15.xml b/xml/System/Func`15.xml
index 9fc79bc4123..724e23c3681 100644
--- a/xml/System/Func`15.xml
+++ b/xml/System/Func`15.xml
@@ -124,10 +124,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Func`16.xml b/xml/System/Func`16.xml
index a034d8f7538..bfa568c52ef 100644
--- a/xml/System/Func`16.xml
+++ b/xml/System/Func`16.xml
@@ -129,10 +129,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Func`17.xml b/xml/System/Func`17.xml
index b4dddc1e32b..57400a0675e 100644
--- a/xml/System/Func`17.xml
+++ b/xml/System/Func`17.xml
@@ -134,10 +134,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Func`5.xml b/xml/System/Func`5.xml
index b4171d10294..8fad3df4fd2 100644
--- a/xml/System/Func`5.xml
+++ b/xml/System/Func`5.xml
@@ -83,10 +83,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.CompilerServices.TypeForwardedFrom("System.Core, Version=3.5.0.0, Culture=Neutral, PublicKeyToken=b77a5c561934e089")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.TypeForwardedFrom("System.Core, Version=3.5.0.0, Culture=Neutral, PublicKeyToken=b77a5c561934e089")&gt;]</AttributeName>
diff --git a/xml/System/Func`6.xml b/xml/System/Func`6.xml
index 398780b46fd..27ef978b05d 100644
--- a/xml/System/Func`6.xml
+++ b/xml/System/Func`6.xml
@@ -79,10 +79,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Func`7.xml b/xml/System/Func`7.xml
index 8e9550ecf17..860caf77727 100644
--- a/xml/System/Func`7.xml
+++ b/xml/System/Func`7.xml
@@ -84,10 +84,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Func`8.xml b/xml/System/Func`8.xml
index 1d23b1c1a08..5f4caa728b8 100644
--- a/xml/System/Func`8.xml
+++ b/xml/System/Func`8.xml
@@ -89,10 +89,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/Func`9.xml b/xml/System/Func`9.xml
index 6448da6ce0e..cdcb14901e8 100644
--- a/xml/System/Func`9.xml
+++ b/xml/System/Func`9.xml
@@ -94,10 +94,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Parameters>
     <Parameter Name="arg1" Type="T1" />
diff --git a/xml/System/GC.xml b/xml/System/GC.xml
index d859dfcfff6..f7c0f134f65 100644
--- a/xml/System/GC.xml
+++ b/xml/System/GC.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Controls the system garbage collector, a service that automatically reclaims unused memory.</summary>
@@ -1347,10 +1343,6 @@ The following example demonstrates the use of the <xref:System.GC.GetGeneration%
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.Success)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.Success)&gt;]</AttributeName>
diff --git a/xml/System/Guid.xml b/xml/System/Guid.xml
index 3a7cfb97b63..b99991f0119 100644
--- a/xml/System/Guid.xml
+++ b/xml/System/Guid.xml
@@ -167,12 +167,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="b" Type="System.Byte[]" />
       </Parameters>
@@ -256,12 +250,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="g" Type="System.String" />
       </Parameters>
@@ -394,12 +382,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="a" Type="System.Int32" />
         <Parameter Name="b" Type="System.Int16" />
@@ -754,12 +736,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1054,12 +1030,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1572,12 +1542,6 @@ After trimming, the length of the read-only character span is 0.</exception>
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Guid</ReturnType>
       </ReturnValue>
@@ -1698,12 +1662,6 @@ After trimming, the length of the read-only character span is 0.</exception>
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Guid</ReturnType>
       </ReturnValue>
@@ -1823,12 +1781,6 @@ The <xref:System.Guid.ParseExact%2A> method requires the read-only character spa
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Guid</ReturnType>
       </ReturnValue>
@@ -2134,12 +2086,6 @@ Because the `provider` parameter is ignored, you cannot use it to provide a cust
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -2187,12 +2133,6 @@ Because the `provider` parameter is ignored, you cannot use it to provide a cust
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Byte[]</ReturnType>
       </ReturnValue>
@@ -2254,12 +2194,6 @@ Because the `provider` parameter is ignored, you cannot use it to provide a cust
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -2317,12 +2251,6 @@ Because the `provider` parameter is ignored, you cannot use it to provide a cust
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -2401,10 +2329,6 @@ Because the `provider` parameter is ignored, you cannot use it to provide a cust
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2620,12 +2544,6 @@ Because the `provider` parameter is ignored, you cannot use it to provide a cust
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2738,12 +2656,6 @@ Because the `provider` parameter is ignored, you cannot use it to provide a cust
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2854,12 +2766,6 @@ Because the `provider` parameter is ignored, you cannot use it to provide a cust
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Half.xml b/xml/System/Half.xml
index 85e27961d12..39b31d39520 100644
--- a/xml/System/Half.xml
+++ b/xml/System/Half.xml
@@ -919,12 +919,6 @@ This computes `arctan(x) / π` in the interval `[-0.5, +0.5]`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -965,12 +959,6 @@ This computes `arctan(x) / π` in the interval `[-0.5, +0.5]`.
         <AssemblyName>System.Runtime</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TInteger</ReturnType>
       </ReturnValue>
@@ -1014,12 +1002,6 @@ This computes `arctan(x) / π` in the interval `[-0.5, +0.5]`.
         <AssemblyName>System.Runtime</AssemblyName>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TInteger</ReturnType>
       </ReturnValue>
@@ -1207,12 +1189,6 @@ This computes `cos(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Half</ReturnType>
       </ReturnValue>
@@ -1258,12 +1234,6 @@ This computes `cos(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Half</ReturnType>
       </ReturnValue>
@@ -1309,12 +1279,6 @@ This computes `cos(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Half</ReturnType>
       </ReturnValue>
@@ -1478,12 +1442,6 @@ This computes `cos(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4717,12 +4675,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Half</ReturnType>
       </ReturnValue>
@@ -4837,12 +4789,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Half</ReturnType>
       </ReturnValue>
@@ -4891,12 +4837,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Half</ReturnType>
       </ReturnValue>
@@ -5034,12 +4974,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Half</ReturnType>
       </ReturnValue>
@@ -6709,12 +6643,6 @@ This computes `tan(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -6741,12 +6669,6 @@ This computes `tan(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -6783,12 +6705,6 @@ This computes `tan(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -6836,12 +6752,6 @@ This computes `tan(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -7082,12 +6992,6 @@ This computes `tan(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7204,12 +7108,6 @@ This computes `tan(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7345,12 +7243,6 @@ This computes `tan(x * π)`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/HashCode.xml b/xml/System/HashCode.xml
index 27ec08d48d2..b1ca7110fd2 100644
--- a/xml/System/HashCode.xml
+++ b/xml/System/HashCode.xml
@@ -40,10 +40,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Combines the hash code for multiple values into a single hash code.</summary>
@@ -221,12 +217,6 @@ This value can be a null reference (Nothing in Visual Basic), which will use the
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -994,10 +984,6 @@ This method does not guarantee that the result of adding a span of bytes will ma
           <AttributeName Language="C#">[System.Obsolete("HashCode is a mutable struct and should not be compared with other HashCodes.", true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("HashCode is a mutable struct and should not be compared with other HashCodes.", true)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
diff --git a/xml/System/IAsyncResult.xml b/xml/System/IAsyncResult.xml
index 42539a02208..9cddc446f9d 100644
--- a/xml/System/IAsyncResult.xml
+++ b/xml/System/IAsyncResult.xml
@@ -44,10 +44,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -129,10 +125,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
diff --git a/xml/System/ICloneable.xml b/xml/System/ICloneable.xml
index 257ebcca41a..a783ea57c55 100644
--- a/xml/System/ICloneable.xml
+++ b/xml/System/ICloneable.xml
@@ -38,10 +38,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System/IComparable.xml b/xml/System/IComparable.xml
index e542ad981ce..0d0c396b08b 100644
--- a/xml/System/IComparable.xml
+++ b/xml/System/IComparable.xml
@@ -44,10 +44,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System/IComparable`1.xml b/xml/System/IComparable`1.xml
index a2aeeae79e6..4c08e319a70 100644
--- a/xml/System/IComparable`1.xml
+++ b/xml/System/IComparable`1.xml
@@ -52,12 +52,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="T">The type of object to compare.</typeparam>
     <summary>Defines a generalized comparison method that a value type or class implements to create a type-specific comparison method for ordering or sorting its instances.</summary>
diff --git a/xml/System/IConvertible.xml b/xml/System/IConvertible.xml
index 3d9b74ff9ff..639d22cddbb 100644
--- a/xml/System/IConvertible.xml
+++ b/xml/System/IConvertible.xml
@@ -46,10 +46,6 @@
       <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -683,12 +679,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -743,12 +733,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
diff --git a/xml/System/ICustomFormatter.xml b/xml/System/ICustomFormatter.xml
index 0793c67e98d..e10e0b24ea7 100644
--- a/xml/System/ICustomFormatter.xml
+++ b/xml/System/ICustomFormatter.xml
@@ -44,10 +44,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System/IEquatable`1.xml b/xml/System/IEquatable`1.xml
index cba579e85a4..52167755abb 100644
--- a/xml/System/IEquatable`1.xml
+++ b/xml/System/IEquatable`1.xml
@@ -45,12 +45,6 @@
     <TypeParameter Name="T" />
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="T">The type of objects to compare.</typeparam>
     <summary>Defines a generalized method that a value type or class implements to create a type-specific method for determining equality of instances.</summary>
diff --git a/xml/System/IFormatProvider.xml b/xml/System/IFormatProvider.xml
index ce30acf80b9..34024552021 100644
--- a/xml/System/IFormatProvider.xml
+++ b/xml/System/IFormatProvider.xml
@@ -44,10 +44,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System/IFormattable.xml b/xml/System/IFormattable.xml
index c189c2825e3..697fb27f818 100644
--- a/xml/System/IFormattable.xml
+++ b/xml/System/IFormattable.xml
@@ -44,10 +44,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System/IObservable`1.xml b/xml/System/IObservable`1.xml
index d1c6eccf8fc..fe4cc595400 100644
--- a/xml/System/IObservable`1.xml
+++ b/xml/System/IObservable`1.xml
@@ -54,12 +54,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="T">The object that provides notification information.</typeparam>
     <summary>Defines a provider for push-based notification.</summary>
diff --git a/xml/System/IObserver`1.xml b/xml/System/IObserver`1.xml
index 13fcf09dee8..d4d1f4cc7e6 100644
--- a/xml/System/IObserver`1.xml
+++ b/xml/System/IObserver`1.xml
@@ -54,12 +54,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="T">The object that provides notification information.</typeparam>
     <summary>Provides a mechanism for receiving push-based notifications.</summary>
diff --git a/xml/System/IParsable`1.xml b/xml/System/IParsable`1.xml
index b87dd76d6f0..94a6bcb2a47 100644
--- a/xml/System/IParsable`1.xml
+++ b/xml/System/IParsable`1.xml
@@ -40,12 +40,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TSelf</ReturnType>
       </ReturnValue>
@@ -88,12 +82,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/IProgress`1.xml b/xml/System/IProgress`1.xml
index bb5d19bd09b..5a18ff6117a 100644
--- a/xml/System/IProgress`1.xml
+++ b/xml/System/IProgress`1.xml
@@ -54,12 +54,6 @@
     </TypeParameter>
   </TypeParameters>
   <Interfaces />
-  <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
-  </Attributes>
   <Docs>
     <typeparam name="T">The type of progress update value.</typeparam>
     <summary>Defines a provider for progress updates.</summary>
diff --git a/xml/System/IServiceProvider.xml b/xml/System/IServiceProvider.xml
index 757e13d9779..c9a07db08ef 100644
--- a/xml/System/IServiceProvider.xml
+++ b/xml/System/IServiceProvider.xml
@@ -39,10 +39,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(false)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(false)&gt;]</AttributeName>
diff --git a/xml/System/Index.xml b/xml/System/Index.xml
index 6e528fb24e4..0614bee14f4 100644
--- a/xml/System/Index.xml
+++ b/xml/System/Index.xml
@@ -192,12 +192,6 @@ If the <xref:System.Index> is constructed from the end, an index value of 1 poin
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -486,12 +480,6 @@ Collections are not expected to have a negative length/count. If this method's r
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System/IndexOutOfRangeException.xml b/xml/System/IndexOutOfRangeException.xml
index 2eaab6ecb47..f1daebd72c5 100644
--- a/xml/System/IndexOutOfRangeException.xml
+++ b/xml/System/IndexOutOfRangeException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System/InsufficientExecutionStackException.xml b/xml/System/InsufficientExecutionStackException.xml
index 9e51d78b362..e314726f6d9 100644
--- a/xml/System/InsufficientExecutionStackException.xml
+++ b/xml/System/InsufficientExecutionStackException.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System/InsufficientMemoryException.xml b/xml/System/InsufficientMemoryException.xml
index df901012472..18a208457ee 100644
--- a/xml/System/InsufficientMemoryException.xml
+++ b/xml/System/InsufficientMemoryException.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System/Int128.xml b/xml/System/Int128.xml
index 537f586ab75..0dc20586f7a 100644
--- a/xml/System/Int128.xml
+++ b/xml/System/Int128.xml
@@ -360,12 +360,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -450,12 +444,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int128</ReturnType>
       </ReturnValue>
@@ -501,12 +489,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int128</ReturnType>
       </ReturnValue>
@@ -552,12 +534,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int128</ReturnType>
       </ReturnValue>
@@ -671,12 +647,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3222,12 +3192,6 @@ This operation is meant to perform n unsigned (otherwise known as a logical) rig
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int128</ReturnType>
       </ReturnValue>
@@ -3334,12 +3298,6 @@ This operation is meant to perform n unsigned (otherwise known as a logical) rig
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int128</ReturnType>
       </ReturnValue>
@@ -3372,12 +3330,6 @@ This operation is meant to perform n unsigned (otherwise known as a logical) rig
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int128</ReturnType>
       </ReturnValue>
@@ -3497,12 +3449,6 @@ This operation is meant to perform n unsigned (otherwise known as a logical) rig
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int128</ReturnType>
       </ReturnValue>
@@ -4789,12 +4735,6 @@ It is recommended that a function return `1`, `0`, and `-1`, respectively.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -4820,12 +4760,6 @@ It is recommended that a function return `1`, `0`, and `-1`, respectively.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -4860,12 +4794,6 @@ It is recommended that a function return `1`, `0`, and `-1`, respectively.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -4907,12 +4835,6 @@ It is recommended that a function return `1`, `0`, and `-1`, respectively.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -5140,12 +5062,6 @@ It is recommended that a function return `1`, `0`, and `-1`, respectively.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5262,12 +5178,6 @@ It is recommended that a function return `1`, `0`, and `-1`, respectively.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5390,12 +5300,6 @@ It is recommended that a function return `1`, `0`, and `-1`, respectively.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Int16.xml b/xml/System/Int16.xml
index 920bb5bbf88..9cf1f78727c 100644
--- a/xml/System/Int16.xml
+++ b/xml/System/Int16.xml
@@ -493,12 +493,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -604,12 +598,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int16</ReturnType>
       </ReturnValue>
@@ -661,12 +649,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int16</ReturnType>
       </ReturnValue>
@@ -718,12 +700,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int16</ReturnType>
       </ReturnValue>
@@ -913,12 +889,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1718,12 +1688,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int16</ReturnType>
       </ReturnValue>
@@ -1902,12 +1866,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int16</ReturnType>
       </ReturnValue>
@@ -2042,12 +2000,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int16</ReturnType>
       </ReturnValue>
@@ -2248,12 +2200,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int16</ReturnType>
       </ReturnValue>
@@ -6046,10 +5992,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6138,10 +6080,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6236,12 +6174,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -6343,12 +6275,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -6703,12 +6629,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6892,12 +6812,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7061,12 +6975,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Int32.xml b/xml/System/Int32.xml
index b4ec5e573e5..b1918c12ab7 100644
--- a/xml/System/Int32.xml
+++ b/xml/System/Int32.xml
@@ -519,12 +519,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -631,12 +625,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -688,12 +676,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -745,12 +727,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -947,10 +923,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -1766,12 +1738,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1950,12 +1916,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2093,10 +2053,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -2303,10 +2259,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -6114,10 +6066,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -6211,10 +6159,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -6323,10 +6267,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -6441,10 +6381,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6807,12 +6743,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6997,12 +6927,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7167,10 +7091,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System/Int64.xml b/xml/System/Int64.xml
index e4e170afd41..c5c5fecfd09 100644
--- a/xml/System/Int64.xml
+++ b/xml/System/Int64.xml
@@ -513,12 +513,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -625,12 +619,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
@@ -682,12 +670,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
@@ -739,12 +721,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
@@ -932,12 +908,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1714,12 +1684,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
@@ -1897,12 +1861,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
@@ -2038,12 +1996,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
@@ -2247,12 +2199,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int64</ReturnType>
       </ReturnValue>
@@ -6043,10 +5989,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6135,10 +6077,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6242,10 +6180,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6355,10 +6289,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6721,10 +6651,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6913,12 +6839,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7083,10 +7003,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/IntPtr.xml b/xml/System/IntPtr.xml
index 2797692af74..f4b327ec6a0 100644
--- a/xml/System/IntPtr.xml
+++ b/xml/System/IntPtr.xml
@@ -736,12 +736,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -826,12 +820,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IntPtr</ReturnType>
       </ReturnValue>
@@ -883,12 +871,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IntPtr</ReturnType>
       </ReturnValue>
@@ -940,12 +922,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IntPtr</ReturnType>
       </ReturnValue>
@@ -1095,10 +1071,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2455,12 +2427,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IntPtr</ReturnType>
       </ReturnValue>
@@ -2592,12 +2558,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IntPtr</ReturnType>
       </ReturnValue>
@@ -2647,12 +2607,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IntPtr</ReturnType>
       </ReturnValue>
@@ -2806,12 +2760,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.IntPtr</ReturnType>
       </ReturnValue>
@@ -5951,10 +5899,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -5999,12 +5943,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -6061,10 +5999,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6134,12 +6068,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -6409,12 +6337,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6548,12 +6470,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6699,12 +6615,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/InvalidCastException.xml b/xml/System/InvalidCastException.xml
index 142ae5b6d8f..6b77027add2 100644
--- a/xml/System/InvalidCastException.xml
+++ b/xml/System/InvalidCastException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -244,10 +240,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/InvalidOperationException.xml b/xml/System/InvalidOperationException.xml
index 4688ad2005a..a29a8f243fd 100644
--- a/xml/System/InvalidOperationException.xml
+++ b/xml/System/InvalidOperationException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -245,10 +241,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/InvalidProgramException.xml b/xml/System/InvalidProgramException.xml
index b96df4fb566..f4c8c98a7c6 100644
--- a/xml/System/InvalidProgramException.xml
+++ b/xml/System/InvalidProgramException.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System/InvalidTimeZoneException.xml b/xml/System/InvalidTimeZoneException.xml
index bbdf7ffa84e..0bb0e063029 100644
--- a/xml/System/InvalidTimeZoneException.xml
+++ b/xml/System/InvalidTimeZoneException.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -248,10 +244,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/Lazy`1.xml b/xml/System/Lazy`1.xml
index a4bb19e52cd..e28ff0f09b6 100644
--- a/xml/System/Lazy`1.xml
+++ b/xml/System/Lazy`1.xml
@@ -68,10 +68,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("ThreadSafetyMode={Mode}, IsValueCreated={IsValueCreated}, IsValueFaulted={IsValueFaulted}, Value={ValueForDebugDisplay}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("ThreadSafetyMode={Mode}, IsValueCreated={IsValueCreated}, IsValueFaulted={IsValueFaulted}, Value={ValueForDebugDisplay}")&gt;]</AttributeName>
@@ -890,12 +886,6 @@ An instance created with this constructor is usable by multiple threads concurre
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Lazy`2.xml b/xml/System/Lazy`2.xml
index 5f4ced522e8..bb7e8fb130d 100644
--- a/xml/System/Lazy`2.xml
+++ b/xml/System/Lazy`2.xml
@@ -78,10 +78,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(new System.Byte[] { 0, 1 })&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System/MarshalByRefObject.xml b/xml/System/MarshalByRefObject.xml
index 05761ade537..8f5eed49329 100644
--- a/xml/System/MarshalByRefObject.xml
+++ b/xml/System/MarshalByRefObject.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System/MemberAccessException.xml b/xml/System/MemberAccessException.xml
index 9d78582fe44..e0a9f5203fa 100644
--- a/xml/System/MemberAccessException.xml
+++ b/xml/System/MemberAccessException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -260,10 +256,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/MemoryExtensions+TryWriteInterpolatedStringHandler.xml b/xml/System/MemoryExtensions+TryWriteInterpolatedStringHandler.xml
index 29778dc23d4..c9864e10820 100644
--- a/xml/System/MemoryExtensions+TryWriteInterpolatedStringHandler.xml
+++ b/xml/System/MemoryExtensions+TryWriteInterpolatedStringHandler.xml
@@ -166,12 +166,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -200,12 +194,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -285,12 +273,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -324,12 +306,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -370,12 +346,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -418,12 +388,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -466,12 +430,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -516,12 +474,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/MemoryExtensions.xml b/xml/System/MemoryExtensions.xml
index 2919232973f..a6c13dc9fb0 100644
--- a/xml/System/MemoryExtensions.xml
+++ b/xml/System/MemoryExtensions.xml
@@ -296,12 +296,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Memory&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -351,12 +345,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Memory&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -405,12 +393,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Memory&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -472,12 +454,6 @@ Returns `default` when `segment` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Memory&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -529,12 +505,6 @@ Returns `default` when `segment` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Memory&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -596,12 +566,6 @@ Returns `default` when `array` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Memory&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -652,12 +616,6 @@ Returns `default` when `array` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Memory&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -723,12 +681,6 @@ Returns `default` when `segment` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Memory&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1039,12 +991,6 @@ Returns `default` when `text` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Span&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1094,12 +1040,6 @@ Returns `default` when `text` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Span&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1146,12 +1086,6 @@ Returns `default` when `text` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Span&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1202,12 +1136,6 @@ Returns `default` when `text` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Span&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1268,12 +1196,6 @@ Returns `default` when `segment` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Span&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1323,12 +1245,6 @@ Returns `default` when `segment` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Span&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1380,12 +1296,6 @@ Returns `default` when `segment` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Span&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1435,12 +1345,6 @@ Returns `default` when `segment` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Span&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1491,12 +1395,6 @@ Returns `default` when `segment` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Span&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1562,12 +1460,6 @@ Returns `default` when `segment` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Span&lt;T&gt;</ReturnType>
       </ReturnValue>
@@ -1632,12 +1524,6 @@ Returns `default` when `array` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1697,12 +1583,6 @@ Returns `default` when `array` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1762,12 +1642,6 @@ Returns `default` when `array` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1839,12 +1713,6 @@ Returns `default` when `array` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1916,12 +1784,6 @@ Returns `default` when `array` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1995,12 +1857,6 @@ Returns `default` when `array` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2067,12 +1923,6 @@ Returns `default` when `array` is `null`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2123,12 +1973,6 @@ Returns `default` when `array` is `null`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2179,12 +2023,6 @@ Returns `default` when `array` is `null`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2244,12 +2082,6 @@ Returns `default` when `array` is `null`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2802,12 +2634,6 @@ Returns `default` when `array` is `null`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2863,12 +2689,6 @@ Returns `default` when `array` is `null`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2924,12 +2744,6 @@ Returns `default` when `array` is `null`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2987,12 +2801,6 @@ Returns `default` when `array` is `null`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3383,12 +3191,6 @@ Returns `default` when `array` is `null`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3445,12 +3247,6 @@ Returns `default` when `array` is `null`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3508,12 +3304,6 @@ Returns `default` when `array` is `null`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3572,12 +3362,6 @@ Returns `default` when `array` is `null`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3637,12 +3421,6 @@ Returns `default` when `array` is `null`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3699,12 +3477,6 @@ Returns `default` when `array` is `null`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3762,12 +3534,6 @@ Returns `default` when `array` is `null`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3823,12 +3589,6 @@ Returns `default` when `array` is `null`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3893,12 +3653,6 @@ Returns `default` when `array` is `null`.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -3963,12 +3717,6 @@ If `source` and `destination` overlap, this method behaves as if the original va
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -5258,12 +5006,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -5326,12 +5068,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -5394,12 +5130,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -5464,12 +5194,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -5855,12 +5579,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -5917,12 +5635,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -5979,12 +5691,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -6043,12 +5749,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -6106,12 +5806,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -6167,12 +5861,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -6229,12 +5917,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -6290,12 +5972,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -6908,12 +6584,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -6976,12 +6646,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -7044,12 +6708,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -7114,12 +6772,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -7505,12 +7157,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -7567,12 +7213,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -7629,12 +7269,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -7693,12 +7327,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -7756,12 +7384,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -7817,12 +7439,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -7879,12 +7495,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -7940,12 +7550,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -8010,12 +7614,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -8074,12 +7672,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -8138,12 +7730,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -8204,12 +7790,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -8262,12 +7842,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -8321,12 +7895,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -8401,12 +7969,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -8693,12 +8255,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -8759,12 +8315,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -8827,12 +8377,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -8876,12 +8420,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -9002,12 +8540,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -9063,12 +8595,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -9134,12 +8660,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -9359,12 +8879,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.MemoryExtensions+SpanSplitEnumerator&lt;T&gt;</ReturnType>
         <Attributes>
@@ -9517,12 +9031,6 @@ Invalid sequences will be represented in the enumeration by <xref:System.Text.Ru
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.MemoryExtensions+SpanSplitEnumerator&lt;T&gt;</ReturnType>
         <Attributes>
@@ -12466,12 +11974,6 @@ If `trimElements` is empty, the span is returned unaltered.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -12538,12 +12040,6 @@ If `trimElements` is empty, the span is returned unaltered.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -12621,12 +12117,6 @@ If `trimElements` is empty, the span is returned unaltered.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Memory`1.xml b/xml/System/Memory`1.xml
index 62b61594bdb..5cb01fab2f9 100644
--- a/xml/System/Memory`1.xml
+++ b/xml/System/Memory`1.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netstandard-2.0">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("{ToString(),raw}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("{ToString(),raw}")&gt;]</AttributeName>
@@ -415,10 +411,6 @@ The `Equals(Memory<T>)` method performs a test for reference equality; it does n
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
diff --git a/xml/System/MethodAccessException.xml b/xml/System/MethodAccessException.xml
index b2a8b7b59e9..72bf821cf00 100644
--- a/xml/System/MethodAccessException.xml
+++ b/xml/System/MethodAccessException.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -251,10 +247,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/MissingFieldException.xml b/xml/System/MissingFieldException.xml
index dcb8aae66c0..95aca74ee4b 100644
--- a/xml/System/MissingFieldException.xml
+++ b/xml/System/MissingFieldException.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -193,12 +189,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
       </Parameters>
@@ -320,12 +310,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
         <Parameter Name="inner" Type="System.Exception" />
@@ -384,12 +368,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="className" Type="System.String" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
         <Parameter Name="fieldName" Type="System.String" Index="1" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
diff --git a/xml/System/MissingMemberException.xml b/xml/System/MissingMemberException.xml
index 5631be37fd9..de3466075cf 100644
--- a/xml/System/MissingMemberException.xml
+++ b/xml/System/MissingMemberException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -268,10 +264,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -485,10 +477,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -600,10 +588,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[get: System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;get: System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/MissingMethodException.xml b/xml/System/MissingMethodException.xml
index 73c0ba48fef..9b47e7251de 100644
--- a/xml/System/MissingMethodException.xml
+++ b/xml/System/MissingMethodException.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -198,12 +194,6 @@ The exact timing of when statically referenced methods are loaded is unspecified
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
       </Parameters>
@@ -326,12 +316,6 @@ The exact timing of when statically referenced methods are loaded is unspecified
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
         <Parameter Name="inner" Type="System.Exception" />
@@ -391,12 +375,6 @@ The exact timing of when statically referenced methods are loaded is unspecified
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="className" Type="System.String" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
         <Parameter Name="methodName" Type="System.String" Index="1" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
diff --git a/xml/System/ModuleHandle.xml b/xml/System/ModuleHandle.xml
index 1b1ef395e84..5bd89be23dc 100644
--- a/xml/System/ModuleHandle.xml
+++ b/xml/System/ModuleHandle.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System/MulticastDelegate.xml b/xml/System/MulticastDelegate.xml
index c208577d982..5b00cb2366d 100644
--- a/xml/System/MulticastDelegate.xml
+++ b/xml/System/MulticastDelegate.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -361,10 +357,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -675,12 +667,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -743,12 +729,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/MulticastNotSupportedException.xml b/xml/System/MulticastNotSupportedException.xml
index 54655be28fb..d013ddfc949 100644
--- a/xml/System/MulticastNotSupportedException.xml
+++ b/xml/System/MulticastNotSupportedException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System/NotFiniteNumberException.xml b/xml/System/NotFiniteNumberException.xml
index dae81b9de5a..cd2032d2d1a 100644
--- a/xml/System/NotFiniteNumberException.xml
+++ b/xml/System/NotFiniteNumberException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -287,10 +283,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -530,10 +522,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System/NotImplementedException.xml b/xml/System/NotImplementedException.xml
index a8278531afa..d777ce626cc 100644
--- a/xml/System/NotImplementedException.xml
+++ b/xml/System/NotImplementedException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -248,10 +244,6 @@ The following example throws this exception for a method that has not been devel
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/NotSupportedException.xml b/xml/System/NotSupportedException.xml
index 4aa08181535..6267372e414 100644
--- a/xml/System/NotSupportedException.xml
+++ b/xml/System/NotSupportedException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -240,10 +236,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/NullReferenceException.xml b/xml/System/NullReferenceException.xml
index 40162f14032..8cbfc99d611 100644
--- a/xml/System/NullReferenceException.xml
+++ b/xml/System/NullReferenceException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -342,10 +338,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/Nullable.xml b/xml/System/Nullable.xml
index 438a0682cde..d45db753876 100644
--- a/xml/System/Nullable.xml
+++ b/xml/System/Nullable.xml
@@ -254,12 +254,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Nullable`1.xml b/xml/System/Nullable`1.xml
index 5e035845e63..99cf91c138a 100644
--- a/xml/System/Nullable`1.xml
+++ b/xml/System/Nullable`1.xml
@@ -170,12 +170,6 @@ The following code example defines three rows of a table in the Microsoft Pubs s
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -636,12 +630,6 @@ The following code example defines three rows of a table in the Microsoft Pubs s
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Object.xml b/xml/System/Object.xml
index 28adbcaed81..e938a82793e 100644
--- a/xml/System/Object.xml
+++ b/xml/System/Object.xml
@@ -44,10 +44,6 @@
   </TypeForwardingChain>
   <Interfaces />
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDual)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDual)&gt;]</AttributeName>
@@ -483,10 +479,6 @@ For an additional example that overrides the <xref:System.Object.Finalize%2A> me
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -584,10 +576,6 @@ For an additional example that overrides the <xref:System.Object.Finalize%2A> me
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/ObjectDisposedException.xml b/xml/System/ObjectDisposedException.xml
index 4fbb1297ff2..b3763b002a9 100644
--- a/xml/System/ObjectDisposedException.xml
+++ b/xml/System/ObjectDisposedException.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -155,12 +151,6 @@ Caught:
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="objectName" Type="System.String" />
       </Parameters>
@@ -272,12 +262,6 @@ Caught:
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" Index="0" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.5;netstandard-1.6;netstandard-2.0;netstandard-2.1" />
         <Parameter Name="innerException" Type="System.Exception" Index="1" FrameworkAlternate="dotnet-uwp-10.0;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.5;netstandard-1.6;netstandard-2.0;netstandard-2.1" />
@@ -332,12 +316,6 @@ Caught:
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="objectName" Type="System.String" />
         <Parameter Name="message" Type="System.String" />
diff --git a/xml/System/ObsoleteAttribute.xml b/xml/System/ObsoleteAttribute.xml
index 95e8337678c..08b59b2655d 100644
--- a/xml/System/ObsoleteAttribute.xml
+++ b/xml/System/ObsoleteAttribute.xml
@@ -55,10 +55,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System/OperatingSystem.xml b/xml/System/OperatingSystem.xml
index fb4d7051db9..31d0bb30a57 100644
--- a/xml/System/OperatingSystem.xml
+++ b/xml/System/OperatingSystem.xml
@@ -65,10 +65,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System/OperationCanceledException.xml b/xml/System/OperationCanceledException.xml
index d2c6bb36bb4..73e96fb600a 100644
--- a/xml/System/OperationCanceledException.xml
+++ b/xml/System/OperationCanceledException.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -320,10 +316,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
diff --git a/xml/System/OutOfMemoryException.xml b/xml/System/OutOfMemoryException.xml
index a733af41944..76d303e6f05 100644
--- a/xml/System/OutOfMemoryException.xml
+++ b/xml/System/OutOfMemoryException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -347,10 +343,6 @@ The following Microsoft intermediate (MSIL) instructions throw an <xref:System.O
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/OverflowException.xml b/xml/System/OverflowException.xml
index 30e9c59d656..6facdbd419c 100644
--- a/xml/System/OverflowException.xml
+++ b/xml/System/OverflowException.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -279,10 +275,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/PlatformNotSupportedException.xml b/xml/System/PlatformNotSupportedException.xml
index 8b8d7a4cc61..9aefe7e8b2a 100644
--- a/xml/System/PlatformNotSupportedException.xml
+++ b/xml/System/PlatformNotSupportedException.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -240,10 +236,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/Progress`1.xml b/xml/System/Progress`1.xml
index 226320bf7ba..5b0573005ca 100644
--- a/xml/System/Progress`1.xml
+++ b/xml/System/Progress`1.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <typeparam name="T">Specifies the type of the progress report value.</typeparam>
diff --git a/xml/System/Random.xml b/xml/System/Random.xml
index 6243125e55b..6e043e69070 100644
--- a/xml/System/Random.xml
+++ b/xml/System/Random.xml
@@ -58,10 +58,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -328,12 +324,6 @@ The following example uses the parameterless constructor to instantiate three <x
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -778,12 +768,6 @@ The following example uses the parameterless constructor to instantiate three <x
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -1173,12 +1157,6 @@ Each element of the span of bytes is set to a random number greater than or equa
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Range.xml b/xml/System/Range.xml
index 9b40dcbe5e2..3a5732d752b 100644
--- a/xml/System/Range.xml
+++ b/xml/System/Range.xml
@@ -212,12 +212,6 @@ int[] subArray2 = someArray[1..^0];              // { 2, 3, 4, 5 }
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -449,12 +443,6 @@ For performance reasons, this method doesn't validate `length` to ensure that it
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System/RankException.xml b/xml/System/RankException.xml
index fe54e7f4e5d..dc90158d53c 100644
--- a/xml/System/RankException.xml
+++ b/xml/System/RankException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -252,10 +248,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/ReadOnlyMemory`1.xml b/xml/System/ReadOnlyMemory`1.xml
index 6336cb29497..2a12d43a77e 100644
--- a/xml/System/ReadOnlyMemory`1.xml
+++ b/xml/System/ReadOnlyMemory`1.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netstandard-2.0">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("{ToString(),raw}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("{ToString(),raw}")&gt;]</AttributeName>
@@ -331,10 +327,6 @@ Returns `default` when `array` is `null`.
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
diff --git a/xml/System/ReadOnlySpan`1.xml b/xml/System/ReadOnlySpan`1.xml
index f2b1a50af9d..1986ce6bdfa 100644
--- a/xml/System/ReadOnlySpan`1.xml
+++ b/xml/System/ReadOnlySpan`1.xml
@@ -73,10 +73,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netstandard-2.0">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("{ToString(),raw}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("{ToString(),raw}")&gt;]</AttributeName>
@@ -214,10 +210,6 @@ A `ReadOnlySpan<T>` instance is often used to reference the elements of an array
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="pointer" Type="System.Void*" />
@@ -493,10 +485,6 @@ This method returns `default` when `array` is `null`.
           <AttributeName Language="C#">[System.Obsolete("Equals() on ReadOnlySpan will always throw an exception. Use the equality operator instead.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Equals() on ReadOnlySpan will always throw an exception. Use the equality operator instead.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
diff --git a/xml/System/ResolveEventArgs.xml b/xml/System/ResolveEventArgs.xml
index c48dd0de054..53bac69b7ff 100644
--- a/xml/System/ResolveEventArgs.xml
+++ b/xml/System/ResolveEventArgs.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -263,10 +259,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.Assembly</ReturnType>
diff --git a/xml/System/RuntimeFieldHandle.xml b/xml/System/RuntimeFieldHandle.xml
index a5e68cf6572..19d8475075c 100644
--- a/xml/System/RuntimeFieldHandle.xml
+++ b/xml/System/RuntimeFieldHandle.xml
@@ -133,10 +133,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.Success)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.Success)&gt;]</AttributeName>
@@ -350,10 +346,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System/RuntimeMethodHandle.xml b/xml/System/RuntimeMethodHandle.xml
index fa111e61b1d..af581072add 100644
--- a/xml/System/RuntimeMethodHandle.xml
+++ b/xml/System/RuntimeMethodHandle.xml
@@ -127,10 +127,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.Success)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.Success)&gt;]</AttributeName>
@@ -401,10 +397,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System/RuntimeTypeHandle.xml b/xml/System/RuntimeTypeHandle.xml
index d059446e929..f3c2f27c4de 100644
--- a/xml/System/RuntimeTypeHandle.xml
+++ b/xml/System/RuntimeTypeHandle.xml
@@ -67,10 +67,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -394,10 +390,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System/SByte.xml b/xml/System/SByte.xml
index 5e7528eb2e8..54ce5cc1487 100644
--- a/xml/System/SByte.xml
+++ b/xml/System/SByte.xml
@@ -404,12 +404,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -609,12 +603,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.SByte</ReturnType>
       </ReturnValue>
@@ -666,12 +654,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.SByte</ReturnType>
       </ReturnValue>
@@ -723,12 +705,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.SByte</ReturnType>
       </ReturnValue>
@@ -851,12 +827,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1695,10 +1665,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.SByte</ReturnType>
@@ -1883,10 +1849,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.SByte</ReturnType>
@@ -2034,10 +1996,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.SByte</ReturnType>
@@ -2258,10 +2216,6 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.SByte</ReturnType>
@@ -6046,10 +6000,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6136,10 +6086,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6236,12 +6182,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -6343,12 +6283,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -6715,10 +6649,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
@@ -6893,12 +6823,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7073,10 +6997,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
diff --git a/xml/System/SequencePosition.xml b/xml/System/SequencePosition.xml
index 37fe2c2dcc1..c4d73124590 100644
--- a/xml/System/SequencePosition.xml
+++ b/xml/System/SequencePosition.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Represents a position in a non-contiguous set of memory. Properties of this type should not be interpreted by anything but the type that created it.</summary>
diff --git a/xml/System/Single.xml b/xml/System/Single.xml
index a724fd54153..a9f07dff7ed 100644
--- a/xml/System/Single.xml
+++ b/xml/System/Single.xml
@@ -1058,12 +1058,6 @@ This computes `arctan(x) / π` in the interval `[-0.5, +0.5]`.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1206,12 +1200,6 @@ The following code example demonstrates generic and nongeneric versions of the <
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TInteger</ReturnType>
       </ReturnValue>
@@ -1261,12 +1249,6 @@ The following code example demonstrates generic and nongeneric versions of the <
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>TInteger</ReturnType>
       </ReturnValue>
@@ -1486,12 +1468,6 @@ This computes `cos(x * π)`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Single</ReturnType>
       </ReturnValue>
@@ -1543,12 +1519,6 @@ This computes `cos(x * π)`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Single</ReturnType>
       </ReturnValue>
@@ -1600,12 +1570,6 @@ This computes `cos(x * π)`.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Single</ReturnType>
       </ReturnValue>
@@ -1800,12 +1764,6 @@ This is known as Euler's number and is approximately 2.7182818284590452354.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4676,12 +4634,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Single</ReturnType>
       </ReturnValue>
@@ -4870,12 +4822,6 @@ If a separator is encountered in the `s` parameter during a parse operation, and
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Single</ReturnType>
       </ReturnValue>
@@ -5031,12 +4977,6 @@ If a separator is encountered in the `s` parameter during a parse operation, and
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Single</ReturnType>
       </ReturnValue>
@@ -5271,12 +5211,6 @@ If `s` is out of range of the <xref:System.Single> data type, the method returns
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Single</ReturnType>
       </ReturnValue>
@@ -9113,10 +9047,6 @@ Tau is approximately 6.2831853071795864769.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -9229,10 +9159,6 @@ Tau is approximately 6.2831853071795864769.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -9347,10 +9273,6 @@ Tau is approximately 6.2831853071795864769.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -9466,10 +9388,6 @@ Tau is approximately 6.2831853071795864769.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -9824,10 +9742,6 @@ Tau is approximately 6.2831853071795864769.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -10015,12 +9929,6 @@ If a separator is encountered in the `s` parameter during a parse operation, and
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -10185,10 +10093,6 @@ If a separator is encountered in the `s` parameter during a parse operation, and
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/Span`1.xml b/xml/System/Span`1.xml
index 6e40fbfa073..5889a57b6a3 100644
--- a/xml/System/Span`1.xml
+++ b/xml/System/Span`1.xml
@@ -73,10 +73,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netstandard-2.0">
       <AttributeName Language="C#">[System.Diagnostics.DebuggerDisplay("{ToString(),raw}")]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerDisplay("{ToString(),raw}")&gt;]</AttributeName>
@@ -204,10 +200,6 @@ If `array` is `null`, this constructor returns a `null` `Span<T>`.
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="pointer" Type="System.Void*" />
@@ -471,10 +463,6 @@ This method copies all of `source` to `destination` even if `source` and `destin
           <AttributeName Language="C#">[System.Obsolete("Equals() on Span will always throw an exception. Use the equality operator instead.")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("Equals() on Span will always throw an exception. Use the equality operator instead.")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
diff --git a/xml/System/StackOverflowException.xml b/xml/System/StackOverflowException.xml
index 0bad703b5f3..04d4a8c11e1 100644
--- a/xml/System/StackOverflowException.xml
+++ b/xml/System/StackOverflowException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System/String.xml b/xml/System/String.xml
index 90a84fda696..1b789b79215 100644
--- a/xml/System/String.xml
+++ b/xml/System/String.xml
@@ -110,10 +110,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -195,10 +191,6 @@
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="value" Type="System.Char*" />
@@ -258,10 +250,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -310,12 +298,6 @@
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="value" Type="System.ReadOnlySpan&lt;System.Char&gt;" Index="0" FrameworkAlternate="netcore-2.1;netcore-2.2;netcore-3.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;net-8.0;net-9.0" />
       </Parameters>
@@ -360,10 +342,6 @@
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -499,10 +477,6 @@
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="value" Type="System.Char*" />
@@ -636,10 +610,6 @@ The sum of <paramref name="startIndex" /> and <paramref name="length" /> is grea
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -721,10 +691,6 @@ A new instance of <see cref="T:System.String" /> could not be initialized using
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -984,10 +950,6 @@ All overloads of the <xref:System.String.Compare%2A> method return a 32-bit sign
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -1118,10 +1080,6 @@ To recognize ignorable characters in a string comparison, call the <see cref="M:
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -1250,10 +1208,6 @@ To recognize ignorable characters in a string comparison, call the <see cref="M:
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -1371,10 +1325,6 @@ The following example compares three versions of the letter "I". The results are
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -1499,10 +1449,6 @@ To recognize ignorable characters in a string comparison, call the <see cref="M:
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -1613,12 +1559,6 @@ The following example compares two strings in three different ways: Use linguist
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1752,12 +1692,6 @@ Either <paramref name="indexA" /> or <paramref name="indexB" /> is <see langword
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1898,10 +1832,6 @@ Either <paramref name="indexA" /> or <paramref name="indexB" /> is <see langword
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2039,12 +1969,6 @@ Either <paramref name="indexA" /> or <paramref name="indexB" /> is <see langword
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2179,12 +2103,6 @@ Either <paramref name="strA" /> or <paramref name="strB" /> is <see langword="nu
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -2325,10 +2243,6 @@ Either <paramref name="strA" /> or <paramref name="strB" /> is <see langword="nu
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -2424,10 +2338,6 @@ The following example performs and ordinal comparison of two strings that only d
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -2564,10 +2474,6 @@ Both overloads of the <xref:System.String.CompareTo%2A> method perform culture-s
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -2686,10 +2592,6 @@ To recognize ignorable characters in a string comparison, call the <see cref="M:
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -3249,12 +3151,6 @@ The following example demonstrates the use of the <xref:System.String.Concat%2A>
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -3315,12 +3211,6 @@ The following example demonstrates the <xref:System.String.Concat%2A> method.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -3373,10 +3263,6 @@ The following example demonstrates the <xref:System.String.Concat%2A> method.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -3451,12 +3337,6 @@ The following example concatenates a person's first, middle, and last name.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -3517,12 +3397,6 @@ The following example demonstrates the <xref:System.String.Concat%2A> method.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -3577,10 +3451,6 @@ The following example demonstrates the <xref:System.String.Concat%2A> method.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -3719,12 +3589,6 @@ The following example illustrates the use of the <xref:System.String.Concat(Syst
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -3781,10 +3645,6 @@ The following example illustrates the use of the <xref:System.String.Concat(Syst
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -4235,12 +4095,6 @@ Depending on Why you want to call the `Copy` method, there are a number of alter
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
       </ReturnValue>
@@ -4425,12 +4279,6 @@ The following example demonstrates the <xref:System.String.CopyTo%2A> method.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -4958,10 +4806,6 @@ Invalid sequences are represented in the enumeration by <xref:System.Text.Rune.R
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -5047,10 +4891,6 @@ The following example demonstrates the <xref:System.String.Equals%2A> method.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.ConstrainedExecution.ReliabilityContract(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, System.Runtime.ConstrainedExecution.Cer.MayFail)&gt;]</AttributeName>
@@ -5133,10 +4973,6 @@ The following example demonstrates the <xref:System.String.Equals%2A> method. It
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -5210,10 +5046,6 @@ The following example demonstrates the <xref:System.String.Equals%2A> method.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -5295,10 +5127,6 @@ The following example creates a string array that consists of an uppercase "I",
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6173,12 +6001,6 @@ The index of a format item is not zero or one.</exception>
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -6263,12 +6085,6 @@ The index of a format item is not zero or one.</exception>
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -6362,12 +6178,6 @@ The index of a format item is less than zero, or greater than two.</exception>
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -6833,12 +6643,6 @@ The following example demonstrates the <xref:System.String.GetHashCode%2A> metho
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -6915,12 +6719,6 @@ The following example demonstrates the <xref:System.String.GetHashCode%2A> metho
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -8616,10 +8414,6 @@ For a description of supported Unicode normalization forms, see <xref:System.Tex
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -8691,12 +8485,6 @@ The following example examines three strings and determines whether each string
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -11089,10 +10877,6 @@ For a description of supported Unicode normalization forms, see <xref:System.Tex
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -11157,12 +10941,6 @@ The following example demonstrates the equality operator.
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ReadOnlySpan&lt;System.Char&gt;</ReturnType>
       </ReturnValue>
@@ -11220,10 +10998,6 @@ The following example demonstrates the equality operator.
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -12424,12 +12198,6 @@ The following example demonstrates how to extract individual words from a block
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String[]</ReturnType>
         <Attributes>
@@ -16278,12 +16046,6 @@ The following example uses the `Trim(System.Char[])` method to remove space, ast
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
         <Attributes>
@@ -16523,12 +16285,6 @@ The following example demonstrates how you can use the `TrimEnd(System.Char[])`
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
         <Attributes>
@@ -16780,12 +16536,6 @@ The following example then illustrates a call to the `StripComments` method.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
         <Attributes>
@@ -16839,12 +16589,6 @@ The following example then illustrates a call to the `StripComments` method.
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/StringComparer.xml b/xml/System/StringComparer.xml
index eb92b0a167f..8f2c6785e50 100644
--- a/xml/System/StringComparer.xml
+++ b/xml/System/StringComparer.xml
@@ -71,10 +71,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -189,12 +185,6 @@ The following example demonstrates the properties and the <xref:System.StringCom
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -276,12 +266,6 @@ The following example demonstrates the properties and the <xref:System.StringCom
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -624,12 +608,6 @@ The following example demonstrates the properties and the <xref:System.StringCom
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -693,12 +671,6 @@ The following example demonstrates the properties and the <xref:System.StringCom
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1044,12 +1016,6 @@ The following example demonstrates the properties and the <xref:System.StringCom
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1110,12 +1076,6 @@ A "well-known culture-aware comparer" describes a comparer that's tied to a spec
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/StringNormalizationExtensions.xml b/xml/System/StringNormalizationExtensions.xml
index 6cf2bbb7b9b..76d9056f812 100644
--- a/xml/System/StringNormalizationExtensions.xml
+++ b/xml/System/StringNormalizationExtensions.xml
@@ -62,10 +62,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">
       <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
diff --git a/xml/System/SystemException.xml b/xml/System/SystemException.xml
index 13516066a5f..3d8c0be26af 100644
--- a/xml/System/SystemException.xml
+++ b/xml/System/SystemException.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -234,10 +230,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/TimeOnly.xml b/xml/System/TimeOnly.xml
index f3c5cf1ca86..15dc3419c51 100644
--- a/xml/System/TimeOnly.xml
+++ b/xml/System/TimeOnly.xml
@@ -399,12 +399,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -617,12 +611,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1201,12 +1189,6 @@ If `start` and `end` are equal, this method returns `false`, meaning there is ze
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.TimeOnly</ReturnType>
       </ReturnValue>
@@ -1281,12 +1263,6 @@ If `start` and `end` are equal, this method returns `false`, meaning there is ze
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.TimeOnly</ReturnType>
       </ReturnValue>
@@ -1365,12 +1341,6 @@ If `start` and `end` are equal, this method returns `false`, meaning there is ze
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.TimeOnly</ReturnType>
       </ReturnValue>
@@ -1458,12 +1428,6 @@ If `start` and `end` are equal, this method returns `false`, meaning there is ze
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.TimeOnly</ReturnType>
       </ReturnValue>
@@ -1506,12 +1470,6 @@ If `start` and `end` are equal, this method returns `false`, meaning there is ze
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.TimeOnly</ReturnType>
       </ReturnValue>
@@ -1657,12 +1615,6 @@ If `start` and `end` are equal, this method returns `false`, meaning there is ze
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.TimeOnly</ReturnType>
       </ReturnValue>
@@ -1715,12 +1667,6 @@ If `start` and `end` are equal, this method returns `false`, meaning there is ze
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.TimeOnly</ReturnType>
       </ReturnValue>
@@ -1822,12 +1768,6 @@ If `start` and `end` are equal, this method returns `false`, meaning there is ze
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1853,12 +1793,6 @@ If `start` and `end` are equal, this method returns `false`, meaning there is ze
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1884,12 +1818,6 @@ If `start` and `end` are equal, this method returns `false`, meaning there is ze
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1915,12 +1843,6 @@ If `start` and `end` are equal, this method returns `false`, meaning there is ze
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -1956,12 +1878,6 @@ If `start` and `end` are equal, this method returns `false`, meaning there is ze
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -2012,12 +1928,6 @@ The accepted standard formats are 'r', 'R', 'o', 'O', 't' and 'T'.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -2228,12 +2138,6 @@ The accepted standard formats are 'r', 'R', 'o', 'O', 't', and 'T'.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2311,12 +2215,6 @@ The accepted standard formats are 'r', 'R', 'o', 'O', 't', and 'T'.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2401,12 +2299,6 @@ The accepted standard formats are 'r', 'R', 'o', 'O', 't', and 'T'.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2538,12 +2430,6 @@ The accepted standard formats are 'r', 'R', 'o', 'O', 't', and 'T'.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2596,12 +2482,6 @@ The accepted standard formats are 'r', 'R', 'o', 'O', 't', and 'T'.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2705,12 +2585,6 @@ The accepted standard formats are 'r', 'R', 'o', 'O', 't', and 'T'.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2766,12 +2640,6 @@ The accepted standard formats are 'r', 'R', 'o', 'O', 't', and 'T'.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -2828,12 +2696,6 @@ The accepted standard formats are 'r', 'R', 'o', 'O', 't', and 'T'.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/TimeProvider.xml b/xml/System/TimeProvider.xml
index 573cc526d75..7bc927722bc 100644
--- a/xml/System/TimeProvider.xml
+++ b/xml/System/TimeProvider.xml
@@ -26,10 +26,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides an abstraction for time.</summary>
diff --git a/xml/System/TimeSpan.xml b/xml/System/TimeSpan.xml
index 2854e312353..c0d35717436 100644
--- a/xml/System/TimeSpan.xml
+++ b/xml/System/TimeSpan.xml
@@ -675,12 +675,6 @@ The specified `days`, `hours`, `minutes`, `seconds`, `milliseconds`, and `micros
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1076,12 +1070,6 @@ The specified `days`, `hours`, `minutes`, `seconds`, `milliseconds`, and `micros
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3988,12 +3976,6 @@ The value of this constant is 100.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.TimeSpan</ReturnType>
       </ReturnValue>
@@ -4114,12 +4096,6 @@ The following example uses the <xref:System.TimeSpan.Parse%2A> method to convert
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.TimeSpan</ReturnType>
       </ReturnValue>
@@ -4223,12 +4199,6 @@ The following example defines an array of <xref:System.Globalization.CultureInfo
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.TimeSpan</ReturnType>
       </ReturnValue>
@@ -4337,12 +4307,6 @@ The following example defines an array of <xref:System.Globalization.CultureInfo
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.TimeSpan</ReturnType>
       </ReturnValue>
@@ -4574,12 +4538,6 @@ The following example defines an array of <xref:System.Globalization.CultureInfo
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.TimeSpan</ReturnType>
       </ReturnValue>
@@ -4694,12 +4652,6 @@ The following example defines an array of <xref:System.Globalization.CultureInfo
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.TimeSpan</ReturnType>
       </ReturnValue>
@@ -5529,12 +5481,6 @@ The value of this constant is 10.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -5612,12 +5558,6 @@ The value of this constant is 10.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -5709,12 +5649,6 @@ The value of this constant is 10.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -6409,12 +6343,6 @@ The <xref:System.TimeSpan.TotalNanoseconds> property represents whole and fracti
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6534,12 +6462,6 @@ The following example uses the <xref:System.TimeSpan.TryParse%2A> method to crea
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6675,12 +6597,6 @@ The following example defines an array of <xref:System.Globalization.CultureInfo
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6754,12 +6670,6 @@ The following example defines an array of <xref:System.Globalization.CultureInfo
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6866,12 +6776,6 @@ The following example defines an array of <xref:System.Globalization.CultureInfo
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7034,12 +6938,6 @@ The following example defines an array of <xref:System.Globalization.CultureInfo
         <AssemblyName>netstandard</AssemblyName>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7115,12 +7013,6 @@ The following example defines an array of <xref:System.Globalization.CultureInfo
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7228,12 +7120,6 @@ The following example defines an array of <xref:System.Globalization.CultureInfo
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/TimeZone.xml b/xml/System/TimeZone.xml
index 2a9a2cbe50c..2eeba446a33 100644
--- a/xml/System/TimeZone.xml
+++ b/xml/System/TimeZone.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System/TimeZoneInfo+AdjustmentRule.xml b/xml/System/TimeZoneInfo+AdjustmentRule.xml
index 54107c36681..08218093f4e 100644
--- a/xml/System/TimeZoneInfo+AdjustmentRule.xml
+++ b/xml/System/TimeZoneInfo+AdjustmentRule.xml
@@ -57,10 +57,6 @@
     </Interface>
   </Interfaces>
   <Attributes>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -213,12 +209,6 @@ W. Central Africa Standard Time has no adjustment rules
         <AssemblyName>System.Core</AssemblyName>
         <AssemblyVersion>3.5.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.TimeZoneInfo+AdjustmentRule</ReturnType>
       </ReturnValue>
@@ -313,12 +303,6 @@ dateVariable.Date
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType FrameworkAlternate="net-6.0;net-7.0;net-8.0;net-9.0">System.TimeZoneInfo+AdjustmentRule</ReturnType>
       </ReturnValue>
@@ -656,12 +640,6 @@ TimeZoneTime = BaseUtcOffset + DaylightDelta + UtcTime
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -720,12 +698,6 @@ TimeZoneTime = BaseUtcOffset + DaylightDelta + UtcTime
         <AssemblyName>System.Core</AssemblyName>
         <AssemblyVersion>3.5.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/TimeZoneInfo+TransitionTime.xml b/xml/System/TimeZoneInfo+TransitionTime.xml
index 81da01977c6..5623e2fb67c 100644
--- a/xml/System/TimeZoneInfo+TransitionTime.xml
+++ b/xml/System/TimeZoneInfo+TransitionTime.xml
@@ -61,10 +61,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.IsReadOnly]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.IsReadOnly&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -439,12 +435,6 @@
         <AssemblyName>System.Core</AssemblyName>
         <AssemblyVersion>3.5.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/TimeZoneInfo.xml b/xml/System/TimeZoneInfo.xml
index e1a30c5c090..b7a49b9a094 100644
--- a/xml/System/TimeZoneInfo.xml
+++ b/xml/System/TimeZoneInfo.xml
@@ -72,10 +72,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -1223,12 +1219,6 @@
         <AssemblyName>System.Core</AssemblyName>
         <AssemblyVersion>3.5.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.TimeZoneInfo</ReturnType>
       </ReturnValue>
@@ -1370,12 +1360,6 @@
         <AssemblyName>System.Core</AssemblyName>
         <AssemblyVersion>3.5.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.TimeZoneInfo</ReturnType>
       </ReturnValue>
@@ -1670,12 +1654,6 @@
       <AssemblyInfo>
         <AssemblyName>System.Core</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1762,12 +1740,6 @@
         <AssemblyName>System.Core</AssemblyName>
         <AssemblyVersion>3.5.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3674,12 +3646,6 @@ If the application is running on a Windows OS version that lacks the ICU library
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/TimeZoneNotFoundException.xml b/xml/System/TimeZoneNotFoundException.xml
index c7f5e4a8f2b..a7c1a555d05 100644
--- a/xml/System/TimeZoneNotFoundException.xml
+++ b/xml/System/TimeZoneNotFoundException.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -230,10 +226,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/TimeoutException.xml b/xml/System/TimeoutException.xml
index d64249f829b..e99d6c9c4f3 100644
--- a/xml/System/TimeoutException.xml
+++ b/xml/System/TimeoutException.xml
@@ -56,10 +56,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -260,10 +256,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/Tuple.xml b/xml/System/Tuple.xml
index 8f594960a1a..55cc594b827 100644
--- a/xml/System/Tuple.xml
+++ b/xml/System/Tuple.xml
@@ -48,10 +48,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides static methods for creating tuple objects.</summary>
diff --git a/xml/System/TupleExtensions.xml b/xml/System/TupleExtensions.xml
index ee431e36faa..6f0a1629db9 100644
--- a/xml/System/TupleExtensions.xml
+++ b/xml/System/TupleExtensions.xml
@@ -54,10 +54,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides extension methods for tuples to interoperate with language support for tuples in C#.</summary>
@@ -117,10 +113,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -193,10 +185,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -280,10 +268,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -378,10 +362,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -487,10 +467,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -607,10 +583,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -738,10 +710,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -880,10 +848,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1035,10 +999,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1201,10 +1161,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1378,10 +1334,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1566,10 +1518,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1765,10 +1713,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -1975,10 +1919,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -2187,10 +2127,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -2419,10 +2355,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -2662,10 +2594,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -2916,10 +2844,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -3181,10 +3105,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -3457,10 +3377,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -3735,10 +3651,6 @@
           <AttributeName Language="C#">[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Void</ReturnType>
@@ -4037,12 +3949,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Tuple&lt;T1&gt;</ReturnType>
       </ReturnValue>
@@ -5676,12 +5582,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.ValueTuple&lt;T1&gt;</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Tuple`1.xml b/xml/System/Tuple`1.xml
index a50120dee17..a4c6a2be3d3 100644
--- a/xml/System/Tuple`1.xml
+++ b/xml/System/Tuple`1.xml
@@ -137,12 +137,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="item1" Type="T1" />
       </Parameters>
@@ -203,12 +197,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -339,10 +327,6 @@
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(1)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(1)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>T1</ReturnType>
@@ -835,12 +819,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Tuple`2.xml b/xml/System/Tuple`2.xml
index 2089f74f7a5..f3a8e1905ef 100644
--- a/xml/System/Tuple`2.xml
+++ b/xml/System/Tuple`2.xml
@@ -88,10 +88,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -234,12 +230,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Tuple`3.xml b/xml/System/Tuple`3.xml
index 7e1b466db3b..bb5e8dd1a0c 100644
--- a/xml/System/Tuple`3.xml
+++ b/xml/System/Tuple`3.xml
@@ -96,10 +96,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -241,12 +237,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Tuple`4.xml b/xml/System/Tuple`4.xml
index 128d0529f00..e8f9e84480d 100644
--- a/xml/System/Tuple`4.xml
+++ b/xml/System/Tuple`4.xml
@@ -104,10 +104,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -252,12 +248,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Tuple`5.xml b/xml/System/Tuple`5.xml
index c2b710fab0f..01321bb7684 100644
--- a/xml/System/Tuple`5.xml
+++ b/xml/System/Tuple`5.xml
@@ -112,10 +112,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -263,12 +259,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Tuple`6.xml b/xml/System/Tuple`6.xml
index da965fc16d5..4d5dbdd9d5b 100644
--- a/xml/System/Tuple`6.xml
+++ b/xml/System/Tuple`6.xml
@@ -120,10 +120,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -274,12 +270,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Tuple`7.xml b/xml/System/Tuple`7.xml
index cdab0c09134..3d622d610f3 100644
--- a/xml/System/Tuple`7.xml
+++ b/xml/System/Tuple`7.xml
@@ -128,10 +128,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -285,12 +281,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Tuple`8.xml b/xml/System/Tuple`8.xml
index cb7e11a67c7..b8cfcbb2314 100644
--- a/xml/System/Tuple`8.xml
+++ b/xml/System/Tuple`8.xml
@@ -129,10 +129,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -332,12 +328,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/Type.xml b/xml/System/Type.xml
index d85bb216b16..abb964d5810 100644
--- a/xml/System/Type.xml
+++ b/xml/System/Type.xml
@@ -69,10 +69,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)&gt;]</AttributeName>
@@ -307,10 +303,6 @@ The code example uses the <xref:System.Reflection.MethodInfo> to invoke the <xre
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -492,10 +484,6 @@ TopNamespace.Sub\+Namespace.ContainingClass+NestedClass, MyAssembly, Version=1.3
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -654,10 +642,6 @@ TopNamespace.Sub\+Namespace.ContainingClass+NestedClass, MyAssembly, Version=1.3
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodBase</ReturnType>
@@ -750,10 +734,6 @@ TopNamespace.Sub\+Namespace.ContainingClass+NestedClass, MyAssembly, Version=1.3
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -1029,12 +1009,6 @@ TopNamespace.Sub\+Namespace.ContainingClass+NestedClass, MyAssembly, Version=1.3
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1120,10 +1094,6 @@ TopNamespace.Sub\+Namespace.ContainingClass+NestedClass, MyAssembly, Version=1.3
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -1473,10 +1443,6 @@ TopNamespace.Sub\+Namespace.ContainingClass+NestedClass, MyAssembly, Version=1.3
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MemberInfo[]</ReturnType>
@@ -1607,10 +1573,6 @@ The `filter` argument can be a custom delegate of type <xref:System.Reflection.M
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -2199,10 +2161,6 @@ The `filter` argument can be a custom delegate of type <xref:System.Reflection.M
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -2348,10 +2306,6 @@ The `filter` argument can be a custom delegate of type <xref:System.Reflection.M
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -2509,10 +2463,6 @@ The `filter` argument can be a custom delegate of type <xref:System.Reflection.M
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicConstructors | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicConstructors)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.ConstructorInfo</ReturnType>
@@ -2970,12 +2920,6 @@ If the current <xref:System.Type> represents a generic type parameter, the <xref
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
       </ReturnValue>
@@ -6268,10 +6212,6 @@ One of the elements in the <paramref name="types" /> array is <see langword="nul
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
@@ -6424,10 +6364,6 @@ One of the elements in the <paramref name="types" /> array is <see langword="nul
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
@@ -6534,10 +6470,6 @@ One of the elements in the <paramref name="types" /> array is <see langword="nul
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
@@ -6710,10 +6642,6 @@ One of the elements in the <paramref name="types" /> array is <see langword="nul
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
@@ -6816,10 +6744,6 @@ One of the elements in the <paramref name="types" /> array is <see langword="nul
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
@@ -6955,10 +6879,6 @@ One of the elements in the <paramref name="types" /> array is <see langword="nul
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicMethods | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.MethodInfo</ReturnType>
@@ -8125,10 +8045,6 @@ The following example retrieves the `Type` object of a user-defined class, retri
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.PropertyInfo</ReturnType>
@@ -8423,10 +8339,6 @@ The following example retrieves the `Type` object of a user-defined class, retri
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.PropertyInfo</ReturnType>
@@ -8553,10 +8465,6 @@ The following example retrieves the `Type` object of a user-defined class, retri
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.PropertyInfo</ReturnType>
@@ -8670,10 +8578,6 @@ The following example retrieves the `Type` object of a user-defined class, retri
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.NonPublicProperties | System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicProperties)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Reflection.PropertyInfo</ReturnType>
@@ -10014,12 +9918,6 @@ Calling this method overload is the same as calling the <xref:System.Type.GetTyp
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.TypeCode</ReturnType>
       </ReturnValue>
@@ -10147,10 +10045,6 @@ Calling this method overload is the same as calling the <xref:System.Type.GetTyp
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -10245,10 +10139,6 @@ Calling this method overload is the same as calling the <xref:System.Type.GetTyp
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -10350,10 +10240,6 @@ Calling this method overload is the same as calling the <xref:System.Type.GetTyp
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -10446,10 +10332,6 @@ Calling this method overload is the same as calling the <xref:System.Type.GetTyp
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -10551,10 +10433,6 @@ Calling this method overload is the same as calling the <xref:System.Type.GetTyp
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -10789,10 +10667,6 @@ Calling this method overload is the same as calling the <xref:System.Type.GetTyp
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -10877,10 +10751,6 @@ Calling this method overload is the same as calling the <xref:System.Type.GetTyp
           <AttributeName Language="C#">[System.Runtime.Versioning.SupportedOSPlatform("windows")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.Versioning.SupportedOSPlatform("windows")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
@@ -11255,10 +11125,6 @@ Calling this method overload is the same as calling the <xref:System.Type.GetTyp
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Diagnostics.DebuggerStepThrough]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerStepThrough&gt;]</AttributeName>
@@ -11484,10 +11350,6 @@ Calling this method overload is the same as calling the <xref:System.Type.GetTyp
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Diagnostics.DebuggerStepThrough]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.DebuggerStepThrough&gt;]</AttributeName>
@@ -11707,10 +11569,6 @@ Calling this method overload is the same as calling the <xref:System.Type.GetTyp
           <AttributeName Language="C#">[System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
@@ -12251,10 +12109,6 @@ GetType(Array).IsAssignableFrom(type)
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -12360,12 +12214,6 @@ GetType(Array).IsAssignableFrom(type)
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -13203,12 +13051,6 @@ Byref-like structures are declared using `ref struct` keyword in C#. An instance
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -13740,10 +13582,6 @@ Byref-like structures are declared using `ref struct` keyword in C#. An instance
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -16634,10 +16472,6 @@ The following example uses the <xref:System.Type.MakeGenericType%2A> method to c
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
@@ -16704,10 +16538,6 @@ The following example uses the <xref:System.Type.MakeGenericType%2A> method to c
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -16760,10 +16590,6 @@ The following example uses the <xref:System.Type.MakeGenericType%2A> method to c
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -16825,10 +16651,6 @@ The following example uses the <xref:System.Type.MakeGenericType%2A> method to c
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Type</ReturnType>
@@ -17015,10 +16837,6 @@ The following example uses the <xref:System.Type.MakeGenericType%2A> method to c
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.Runtime.InteropServices.StructLayoutAttribute</ReturnType>
@@ -17435,10 +17253,6 @@ The following example uses the <xref:System.Type.MakeGenericType%2A> method to c
           <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(2)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(2)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[get: System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;get: System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
diff --git a/xml/System/TypeAccessException.xml b/xml/System/TypeAccessException.xml
index 31cfce97b7e..ed45e3dbcbf 100644
--- a/xml/System/TypeAccessException.xml
+++ b/xml/System/TypeAccessException.xml
@@ -49,10 +49,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -234,10 +230,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <Parameters>
         <Parameter Name="info" Type="System.Runtime.Serialization.SerializationInfo" Index="0" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
diff --git a/xml/System/TypeInitializationException.xml b/xml/System/TypeInitializationException.xml
index 143ecc8d787..1088ffb0800 100644
--- a/xml/System/TypeInitializationException.xml
+++ b/xml/System/TypeInitializationException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -113,12 +109,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="fullTypeName" Type="System.String" />
         <Parameter Name="innerException" Type="System.Exception" />
diff --git a/xml/System/TypeLoadException.xml b/xml/System/TypeLoadException.xml
index d20a124675c..90b5bdf8d92 100644
--- a/xml/System/TypeLoadException.xml
+++ b/xml/System/TypeLoadException.xml
@@ -63,10 +63,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -199,12 +195,6 @@ The exact timing of when statically referenced types are loaded is unspecified.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
       </Parameters>
@@ -347,12 +337,6 @@ The exact timing of when statically referenced types are loaded is unspecified.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="message" Type="System.String" />
         <Parameter Name="inner" Type="System.Exception" />
diff --git a/xml/System/TypeUnloadedException.xml b/xml/System/TypeUnloadedException.xml
index 2b2247af97f..e5221f8a40d 100644
--- a/xml/System/TypeUnloadedException.xml
+++ b/xml/System/TypeUnloadedException.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -235,10 +231,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/TypedReference.xml b/xml/System/TypedReference.xml
index ca217790680..1cdaa360d76 100644
--- a/xml/System/TypedReference.xml
+++ b/xml/System/TypedReference.xml
@@ -53,10 +53,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.InteropServices.ComVisible(true)&gt;]</AttributeName>
@@ -113,12 +109,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -340,10 +330,6 @@
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
diff --git a/xml/System/UInt128.xml b/xml/System/UInt128.xml
index 2d307c2ebcd..b507258783b 100644
--- a/xml/System/UInt128.xml
+++ b/xml/System/UInt128.xml
@@ -282,12 +282,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -390,12 +384,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt128</ReturnType>
       </ReturnValue>
@@ -441,12 +429,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt128</ReturnType>
       </ReturnValue>
@@ -492,12 +474,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt128</ReturnType>
       </ReturnValue>
@@ -579,12 +555,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3112,12 +3082,6 @@ This operation is meant to perform n unsigned (otherwise known as a logical) rig
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt128</ReturnType>
       </ReturnValue>
@@ -3224,12 +3188,6 @@ This operation is meant to perform n unsigned (otherwise known as a logical) rig
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt128</ReturnType>
       </ReturnValue>
@@ -3262,12 +3220,6 @@ This operation is meant to perform n unsigned (otherwise known as a logical) rig
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt128</ReturnType>
       </ReturnValue>
@@ -3387,12 +3339,6 @@ This operation is meant to perform n unsigned (otherwise known as a logical) rig
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt128</ReturnType>
       </ReturnValue>
@@ -4869,12 +4815,6 @@ It is recommended that a function return `1`, `0`, and `-1`, respectively.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -4900,12 +4840,6 @@ It is recommended that a function return `1`, `0`, and `-1`, respectively.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -4940,12 +4874,6 @@ It is recommended that a function return `1`, `0`, and `-1`, respectively.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -4987,12 +4915,6 @@ It is recommended that a function return `1`, `0`, and `-1`, respectively.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -5220,12 +5142,6 @@ It is recommended that a function return `1`, `0`, and `-1`, respectively.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5342,12 +5258,6 @@ It is recommended that a function return `1`, `0`, and `-1`, respectively.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5470,12 +5380,6 @@ It is recommended that a function return `1`, `0`, and `-1`, respectively.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/UInt16.xml b/xml/System/UInt16.xml
index 6895ee070c3..73fd639b967 100644
--- a/xml/System/UInt16.xml
+++ b/xml/System/UInt16.xml
@@ -366,12 +366,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -540,12 +534,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt16</ReturnType>
       </ReturnValue>
@@ -597,12 +585,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt16</ReturnType>
       </ReturnValue>
@@ -654,12 +636,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt16</ReturnType>
       </ReturnValue>
@@ -782,12 +758,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1463,10 +1433,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt16</ReturnType>
@@ -1653,10 +1619,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt16</ReturnType>
@@ -1805,10 +1767,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt16</ReturnType>
@@ -2029,10 +1987,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt16</ReturnType>
@@ -6027,10 +5981,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6112,10 +6062,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6204,10 +6150,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6313,10 +6255,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6687,10 +6625,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6873,12 +6807,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7053,10 +6981,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/UInt32.xml b/xml/System/UInt32.xml
index ac6c4f27e5d..b9ed07085e1 100644
--- a/xml/System/UInt32.xml
+++ b/xml/System/UInt32.xml
@@ -399,12 +399,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -573,12 +567,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt32</ReturnType>
       </ReturnValue>
@@ -630,12 +618,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt32</ReturnType>
       </ReturnValue>
@@ -687,12 +669,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt32</ReturnType>
       </ReturnValue>
@@ -816,10 +792,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -1514,10 +1486,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt32</ReturnType>
@@ -1700,10 +1668,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt32</ReturnType>
@@ -1853,10 +1817,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt32</ReturnType>
@@ -2076,10 +2036,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt32</ReturnType>
@@ -6077,10 +6033,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -6166,10 +6118,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6258,10 +6206,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6367,10 +6311,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")&gt;]</AttributeName>
@@ -6745,10 +6685,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6931,12 +6867,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7111,10 +7041,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/UInt64.xml b/xml/System/UInt64.xml
index 839ee21003f..c34c616b0f1 100644
--- a/xml/System/UInt64.xml
+++ b/xml/System/UInt64.xml
@@ -397,12 +397,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -571,12 +565,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt64</ReturnType>
       </ReturnValue>
@@ -628,12 +616,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt64</ReturnType>
       </ReturnValue>
@@ -685,12 +667,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt64</ReturnType>
       </ReturnValue>
@@ -813,12 +789,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1504,10 +1474,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt64</ReturnType>
@@ -1690,10 +1656,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt64</ReturnType>
@@ -1838,10 +1800,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt64</ReturnType>
@@ -2060,10 +2018,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
       </Attributes>
       <ReturnValue>
         <ReturnType>System.UInt64</ReturnType>
@@ -6054,10 +6008,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6139,10 +6089,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6231,10 +6177,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6340,10 +6282,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6713,10 +6651,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -6899,12 +6833,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -7079,10 +7007,6 @@ This member is an explicit interface member implementation. It can be used only
           <AttributeName Language="C#">[System.CLSCompliant(false)]</AttributeName>
           <AttributeName Language="F#">[&lt;System.CLSCompliant(false)&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/UIntPtr.xml b/xml/System/UIntPtr.xml
index c8a4459135a..61c8d52277b 100644
--- a/xml/System/UIntPtr.xml
+++ b/xml/System/UIntPtr.xml
@@ -599,12 +599,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -697,12 +691,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UIntPtr</ReturnType>
       </ReturnValue>
@@ -754,12 +742,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UIntPtr</ReturnType>
       </ReturnValue>
@@ -811,12 +793,6 @@
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UIntPtr</ReturnType>
       </ReturnValue>
@@ -927,10 +903,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -2049,12 +2021,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UIntPtr</ReturnType>
       </ReturnValue>
@@ -2186,12 +2152,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UIntPtr</ReturnType>
       </ReturnValue>
@@ -2241,12 +2201,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UIntPtr</ReturnType>
       </ReturnValue>
@@ -2400,12 +2354,6 @@ For <xref:System.Numerics.IFloatingPoint%601> this method matches the IEEE 754:2
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UIntPtr</ReturnType>
       </ReturnValue>
@@ -5558,10 +5506,6 @@ This member is an explicit interface member implementation. It can be used only
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-1.0;netstandard-1.1;netstandard-1.2">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -5606,12 +5550,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -5654,12 +5592,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -5711,12 +5643,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -6098,12 +6024,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6237,12 +6157,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -6388,12 +6302,6 @@ This member is an explicit interface member implementation. It can be used only
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/UnauthorizedAccessException.xml b/xml/System/UnauthorizedAccessException.xml
index f838131a8fb..f7f7ca3320d 100644
--- a/xml/System/UnauthorizedAccessException.xml
+++ b/xml/System/UnauthorizedAccessException.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -261,10 +257,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
diff --git a/xml/System/UnhandledExceptionEventArgs.xml b/xml/System/UnhandledExceptionEventArgs.xml
index d05156e4b82..34aad4e6f88 100644
--- a/xml/System/UnhandledExceptionEventArgs.xml
+++ b/xml/System/UnhandledExceptionEventArgs.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System/Uri.xml b/xml/System/Uri.xml
index fd910874086..0eec917e377 100644
--- a/xml/System/Uri.xml
+++ b/xml/System/Uri.xml
@@ -85,10 +85,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -1356,12 +1352,6 @@ The URI formed by combining <paramref name="baseUri" /> and <paramref name="rela
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.UriHostNameType</ReturnType>
       </ReturnValue>
@@ -1426,12 +1416,6 @@ The URI formed by combining <paramref name="baseUri" /> and <paramref name="rela
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1559,12 +1543,6 @@ The URI formed by combining <paramref name="baseUri" /> and <paramref name="rela
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -1753,12 +1731,6 @@ If you used an escaped string to construct this instance (for example, `"http://
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1826,12 +1798,6 @@ If you used an escaped string to construct this instance (for example, `"http://
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1926,12 +1892,6 @@ If you used an escaped string to construct this instance (for example, `"http://
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
         <Attributes>
@@ -3616,12 +3576,6 @@ The following examples show a URI and the results of calling <xref:System.Uri.Ge
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -3937,12 +3891,6 @@ The following examples show a URI and the results of calling <xref:System.Uri.Ge
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4009,12 +3957,6 @@ The following examples show a URI and the results of calling <xref:System.Uri.Ge
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4810,12 +4752,6 @@ The following examples show a URI and the results of calling <xref:System.Uri.Ge
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4894,12 +4830,6 @@ The following examples show a URI and the results of calling <xref:System.Uri.Ge
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -4978,12 +4908,6 @@ The following examples show a URI and the results of calling <xref:System.Uri.Ge
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5051,12 +4975,6 @@ The following examples show a URI and the results of calling <xref:System.Uri.Ge
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5111,12 +5029,6 @@ The following examples show a URI and the results of calling <xref:System.Uri.Ge
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5154,12 +5066,6 @@ The following examples show a URI and the results of calling <xref:System.Uri.Ge
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5194,12 +5100,6 @@ The following examples show a URI and the results of calling <xref:System.Uri.Ge
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -5294,12 +5194,6 @@ The following examples show a URI and the results of calling <xref:System.Uri.Ge
       <AssemblyInfo>
         <AssemblyName>netstandard</AssemblyName>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(0)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(0)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
         <Attributes>
diff --git a/xml/System/UriBuilder.xml b/xml/System/UriBuilder.xml
index dbcb668fbfa..29ad4d3c66e 100644
--- a/xml/System/UriBuilder.xml
+++ b/xml/System/UriBuilder.xml
@@ -57,10 +57,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Provides a custom constructor for uniform resource identifiers (URIs) and modifies URIs for the <see cref="T:System.Uri" /> class.</summary>
@@ -323,12 +319,6 @@ Note: In <see href="https://learn.microsoft.com/previous-versions/br230232(v=vs.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="schemeName" Type="System.String" />
         <Parameter Name="hostName" Type="System.String" />
@@ -393,12 +383,6 @@ Note: In <see href="https://learn.microsoft.com/previous-versions/br230232(v=vs.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="scheme" Type="System.String" />
         <Parameter Name="host" Type="System.String" />
@@ -469,12 +453,6 @@ Note: In <see href="https://learn.microsoft.com/previous-versions/br230232(v=vs.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="scheme" Type="System.String" />
         <Parameter Name="host" Type="System.String" />
@@ -547,12 +525,6 @@ Note: In <see href="https://learn.microsoft.com/previous-versions/br230232(v=vs.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="scheme" Type="System.String" />
         <Parameter Name="host" Type="System.String" />
@@ -629,12 +601,6 @@ Note: In <see href="https://learn.microsoft.com/previous-versions/br230232(v=vs.
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/UriFormatException.xml b/xml/System/UriFormatException.xml
index f996e61b4b9..07729f93ad5 100644
--- a/xml/System/UriFormatException.xml
+++ b/xml/System/UriFormatException.xml
@@ -170,10 +170,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -235,10 +231,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
@@ -296,10 +288,6 @@
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
       <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Runtime.TargetedPatchingOptOut("Performance critical to inline this type of method across NGen image boundaries")&gt;]</AttributeName>
diff --git a/xml/System/UriParser.xml b/xml/System/UriParser.xml
index f0b1158da10..269922fd560 100644
--- a/xml/System/UriParser.xml
+++ b/xml/System/UriParser.xml
@@ -44,10 +44,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Parses a new URI scheme. This is an abstract class.</summary>
@@ -575,12 +571,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System/UriTypeConverter.xml b/xml/System/UriTypeConverter.xml
index 247b702bbbf..59cdb315028 100644
--- a/xml/System/UriTypeConverter.xml
+++ b/xml/System/UriTypeConverter.xml
@@ -45,10 +45,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
   </Attributes>
   <Docs>
     <summary>Converts a <see cref="T:System.String" /> type to a <see cref="T:System.Uri" /> type, and vice versa.</summary>
@@ -129,12 +125,6 @@
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/ValueTuple.xml b/xml/System/ValueTuple.xml
index d8828e04bcb..e06a2fbbeda 100644
--- a/xml/System/ValueTuple.xml
+++ b/xml/System/ValueTuple.xml
@@ -80,10 +80,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -1069,12 +1065,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/ValueTuple`1.xml b/xml/System/ValueTuple`1.xml
index a8b6983aca9..8ff9bff5917 100644
--- a/xml/System/ValueTuple`1.xml
+++ b/xml/System/ValueTuple`1.xml
@@ -130,12 +130,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="item1" Type="T1" />
       </Parameters>
@@ -263,12 +257,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -842,12 +830,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System/ValueTuple`2.xml b/xml/System/ValueTuple`2.xml
index 22e4cec3dfa..5460e5c6ef0 100644
--- a/xml/System/ValueTuple`2.xml
+++ b/xml/System/ValueTuple`2.xml
@@ -141,12 +141,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="item1" Type="T1" />
         <Parameter Name="item2" Type="T2" />
@@ -276,12 +270,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -912,12 +900,6 @@ The <xref:System.Collections.IEqualityComparer.Equals(System.Object,System.Objec
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System/ValueTuple`3.xml b/xml/System/ValueTuple`3.xml
index 1fff9edd679..5a0ad8f55ef 100644
--- a/xml/System/ValueTuple`3.xml
+++ b/xml/System/ValueTuple`3.xml
@@ -150,12 +150,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="item1" Type="T1" />
         <Parameter Name="item2" Type="T2" />
@@ -287,12 +281,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -960,12 +948,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
diff --git a/xml/System/ValueTuple`4.xml b/xml/System/ValueTuple`4.xml
index c32aa0c9fb3..4b95fffbc5b 100644
--- a/xml/System/ValueTuple`4.xml
+++ b/xml/System/ValueTuple`4.xml
@@ -116,10 +116,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -300,12 +296,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/ValueTuple`5.xml b/xml/System/ValueTuple`5.xml
index 4e182f26a1d..173bc00736a 100644
--- a/xml/System/ValueTuple`5.xml
+++ b/xml/System/ValueTuple`5.xml
@@ -124,10 +124,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -311,12 +307,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/ValueTuple`6.xml b/xml/System/ValueTuple`6.xml
index 62371122cc8..975ec0c83a7 100644
--- a/xml/System/ValueTuple`6.xml
+++ b/xml/System/ValueTuple`6.xml
@@ -132,10 +132,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -322,12 +318,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/ValueTuple`7.xml b/xml/System/ValueTuple`7.xml
index 750eb33e8a2..b16440cf71f 100644
--- a/xml/System/ValueTuple`7.xml
+++ b/xml/System/ValueTuple`7.xml
@@ -140,10 +140,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -333,12 +329,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/ValueTuple`8.xml b/xml/System/ValueTuple`8.xml
index 534b9bbd5cb..4b5a6006003 100644
--- a/xml/System/ValueTuple`8.xml
+++ b/xml/System/ValueTuple`8.xml
@@ -153,10 +153,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -367,12 +363,6 @@
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/ValueType.xml b/xml/System/ValueType.xml
index 3e3df37fd1a..c344fcfd4f2 100644
--- a/xml/System/ValueType.xml
+++ b/xml/System/ValueType.xml
@@ -51,10 +51,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
diff --git a/xml/System/Version.xml b/xml/System/Version.xml
index 7eb75e07e68..3f562508ce2 100644
--- a/xml/System/Version.xml
+++ b/xml/System/Version.xml
@@ -209,12 +209,6 @@ The following example uses the <xref:System.Reflection.AssemblyVersionAttribute>
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <Parameters>
         <Parameter Name="version" Type="System.String" />
       </Parameters>
@@ -541,12 +535,6 @@ The following example uses the <xref:System.Reflection.AssemblyVersionAttribute>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Object</ReturnType>
       </ReturnValue>
@@ -609,12 +597,6 @@ The following example uses the <xref:System.Reflection.AssemblyVersionAttribute>
         <AssemblyVersion>8.0.0.0</AssemblyVersion>
         <AssemblyVersion>9.0.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -707,12 +689,6 @@ The following example uses the <xref:System.Reflection.AssemblyVersionAttribute>
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
@@ -822,12 +798,6 @@ The following example uses the <xref:System.Reflection.AssemblyVersionAttribute>
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -888,12 +858,6 @@ The following example uses the <xref:System.Reflection.AssemblyVersionAttribute>
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1253,12 +1217,6 @@ The following example uses the <xref:System.Reflection.AssemblyVersionAttribute>
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1315,12 +1273,6 @@ The following example uses the <xref:System.Reflection.AssemblyVersionAttribute>
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1377,12 +1329,6 @@ The following example uses the <xref:System.Reflection.AssemblyVersionAttribute>
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1439,12 +1385,6 @@ The following example uses the <xref:System.Reflection.AssemblyVersionAttribute>
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1501,12 +1441,6 @@ The following example uses the <xref:System.Reflection.AssemblyVersionAttribute>
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1564,12 +1498,6 @@ The following example uses the <xref:System.Reflection.AssemblyVersionAttribute>
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
@@ -1679,12 +1607,6 @@ where `major`, `minor`, `build`, and `revision` are the string representations o
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Version</ReturnType>
       </ReturnValue>
@@ -2017,12 +1939,6 @@ This member is an explicit interface member implementation.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -2072,12 +1988,6 @@ This member is an explicit interface member implementation.
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
@@ -2382,12 +2292,6 @@ where `major`, `minor`, `build`, and `revision` are the string representations o
         <AssemblyVersion>2.0.0.0</AssemblyVersion>
         <AssemblyVersion>2.1.0.0</AssemblyVersion>
       </AssemblyInfo>
-      <Attributes>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-        </Attribute>
-      </Attributes>
       <ReturnValue>
         <ReturnType>System.Boolean</ReturnType>
       </ReturnValue>
diff --git a/xml/System/WeakReference.xml b/xml/System/WeakReference.xml
index f4376b64cb9..c76f4ce2357 100644
--- a/xml/System/WeakReference.xml
+++ b/xml/System/WeakReference.xml
@@ -60,10 +60,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(2)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>
@@ -273,10 +269,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0">
           <AttributeName Language="C#">[System.Security.SecuritySafeCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecuritySafeCritical&gt;]</AttributeName>
@@ -397,10 +389,6 @@
           <AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")&gt;]</AttributeName>
         </Attribute>
-        <Attribute FrameworkAlternate="net-8.0;net-9.0">
-          <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-          <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-        </Attribute>
         <Attribute FrameworkAlternate="netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
           <AttributeName Language="C#">[System.Security.SecurityCritical]</AttributeName>
           <AttributeName Language="F#">[&lt;System.Security.SecurityCritical&gt;]</AttributeName>
diff --git a/xml/System/WeakReference`1.xml b/xml/System/WeakReference`1.xml
index 05290f4387c..ee4c6bfbf8f 100644
--- a/xml/System/WeakReference`1.xml
+++ b/xml/System/WeakReference`1.xml
@@ -71,10 +71,6 @@
       <AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.Nullable(0)&gt;]</AttributeName>
     </Attribute>
-    <Attribute FrameworkAlternate="net-8.0;net-9.0">
-      <AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(1)]</AttributeName>
-      <AttributeName Language="F#">[&lt;System.Runtime.CompilerServices.NullableContext(1)&gt;]</AttributeName>
-    </Attribute>
     <Attribute FrameworkAlternate="netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
       <AttributeName Language="C#">[System.Serializable]</AttributeName>
       <AttributeName Language="F#">[&lt;System.Serializable&gt;]</AttributeName>